@CONFERENCE{Zelenko2024, author={Zelenko, Darcy and Maxwell, Duncan }, editor={ }, title={Lean Construction for Innovation: A Systematic Review of IGLC Proceedings}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1-12}, url={http://www.iglc.net/papers/details/2195}, doi={10.24928/2024/0111}, affiliation={ PhD Candidate, Future Building Initiative, Monash University, Melbourne, Australia, darcy.zelennko@monash.edu, https://orcid.org/0009-0008-4700-3467 ; Director, Future Building Initiative, Monash University, Melbourne, Australia, duncan.maxwell@monash.edu, https://orcid.org/0000-0002-9039-1441 }, abstract={The implementation of Lean Construction (LC) is hindered by a lack of comprehensive understanding of innovation in the built environment, making it hard for firms to implement potential improvements. This paper contests that a consideration of LC as innovation can stimulate greater uptake, because it encourages firms to think more broadly about its implementation. The study aims to understand contributions to innovation scholarship from the perspective of LC, and to build an argument for considering LC as innovation to increase uptake. Papers published in IGLC conferences across the last 25 years form the basis for a systematised literature review (SLR), that utilises thematic analysis to synthesise understandings about innovation from the LC community. From the findings, six major themes emerge relating to innovation that are prominent in the reviewed literature: Relationship of LC to Innovation, Innovation Models, Barriers, Drivers, Innovation Strategy Essentials, and Collaborative Efforts. The paper argues that LC be considered an innovation for construction in and of itself, and a theoretical model is presented to aid understanding of LC as innovation. Future research pathways are identified, for example workshops with LC experts and practitioners to verify and expand the findings of this paper. }, author_keywords={Innovation, Lean construction, Built Environment }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Merino Chocano2024, author={Merino Chocano, Alvaro Enrique and Fernández Bustamante, Diego Alfredo and Del Savio, Alexandre Almeida }, editor={ }, title={Optimization of Design Coordination Processes for a 7-Story Multifamily Building Using Virtual Design and Construction (VDC)}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={36-47}, url={http://www.iglc.net/papers/details/2196}, doi={10.24928/2024/0125}, affiliation={ Student, Civil Engineering Department, Universidad de Lima, Lima, Peru, 20182907@aloe.ulima.edu.pe, https://orcid.org/0009-0001-2496-8900 ; Student, Civil Engineering Department, Universidad de Lima, Lima, Peru, 20180688@aloe.ulima.edu.pe, https://orcid.org/0009-0001-4392-8111 ; Full Professor, Civil Engineering Department, Universidad de Lima, Lima, Peru, delsavio@gmail.com, https://orcid.org/0000-0002-6067-6606 }, abstract={Traditional construction and property companies often find themselves bound by conventional project management and design techniques, which can lead to delays during the design phase. This situation needs to be avoided. This study presents a process optimization for the design stage of multifamily buildings using Virtual Design Construction (VDC) - a collaborative project management approach. Focused on a case study involving two residential buildings developed by the same property company in Lima, Peru, this research commences with a comprehensive analysis of the existing design processes from the projects. By pinpointing key sources of variability and streamlining the design flow, the proposed VDC implementation aims to enhance compliance with project timelines and the approval of design drawings. The optimized process yielded tangible results, significantly reducing design time, completing tasks ahead of the scheduled deadline, and improving the delivery of technical files by 25%. These outcomes underscore the benefits of this optimized process, including enhanced project efficiency and improved design quality, thereby making a compelling case for applying VDC in similar construction projects by property companies. }, author_keywords={VDC, BIM, collaboration, concurrent engineering, process optimization. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Särkilahti2024, author={Särkilahti, Joonas and Seppänen, Olli and Lappalainen, Eelon }, editor={ }, title={Expectations and Perceptions – Daily Management Meetings in Design}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={48-59}, url={http://www.iglc.net/papers/details/2197}, doi={10.24928/2024/0140}, affiliation={Master of Science, Department of Civil Engineering, Aalto University, Finland, joonas.sarkilahti@gmail.com, orcid.org/0009-0000-1363-7957 ; Associate Professor, Department of Civil Engineering, Aalto University, Finland, olli.seppanen@aalto.fi, orcid.org/0000-0002-2008-5924 ; Doctoral Candidate, Department of Civil Engineering, Aalto University, Finland, eelon.lappalainen@aalto.fi, orcid.org/0000-0002-7573-344X }, abstract={Daily Management (DAM) has generated many benefits in construction, but it has been less used and studied in design management. This case study of a Finnish structural design firm provides insights into the expectations of designers regarding DAM and Daily Management Meetings (DMM), as well as their perceptions during a short experiment on implementing DAM and DMM in daily structural design work. The research data for the case study were collected through interviews, observation, and a survey conducted with the company’s larger structural design group. The main expectations of survey respondents and interviewees included improving the identification of design constraints, ensuring and enhancing the flow of information and increasing trust and team spirit. Interviewees who participated in the experiment highlighted the importance of being able to estimate their own workload and task duration, as well as gain improved knowledge of the concurrent work of other team members. Interestingly, in a larger group with many design managers, the benefit of improving the evaluation of each designer’s workload was not anticipated as a significant benefit. This study contributes to highlighting DAM’s implications for designers’ self-management of their work. }, author_keywords={Lean construction, construction design process management, daily management, daily management meetings, design management }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Merrill2024, author={Merrill, Samuel F. and Smith, James P. and Farnsworth, Clifton B. and Bingham, Evan D. }, editor={ }, title={Takt Time Planning in Construction and Its Impact on the Work-Life Balance for Individuals and Families}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={13-23}, url={http://www.iglc.net/papers/details/2198}, doi={10.24928/2024/0154}, affiliation={ Graduate Student, Department of Civil and Construction Engineering, Ira A. Fulton College of Engineering, Brigham Young University, Provo, USA, sfm98@byu.edu, https://orcid.org/0009-0000-1256-7942 ; Associate Professor, Department of Civil and Construction Engineering, Ira A. Fulton College of Engineering, Brigham Young University, Provo, USA, james_smith@byu.edu, https://orcid.org/0000-0001-8925-5680 ; Associate Professor, Department of Civil and Construction Engineering, Ira A. Fulton College of Engineering, Brigham Young University, Provo, USA, clifton_farnsworth@byu.edu, https://orcid.org/0000-0001-8587-1443 ; Associate Professor, Department of Civil and Construction Engineering, Ira A. Fulton College of Engineering, Brigham Young University, Provo, USA, evan.bingham@byu.edu, https://orcid.org/0000-0001-6636-5609 }, abstract={This paper explores the time management challenges in construction management, emphasizing the prevalence of crisis-oriented work, stress, and burnout. Integrating Takt Time Planning (TTP), a method that establishes production cadence, proves to be transformative in effective construction scheduling. TTP yields benefits like the establishment of flow, enhanced problem detection, and waste reduction. Despite a growing body of research on TTP, there is a notable gap regarding its impact on the ability of individuals to achieve and maintain a healthy work life balance in the construction industry. The focus of this paper is to explore current research and literature to investigate the connection between TTP and its impact on work-life balance and emotional health. Through a literature review and synthesis of information, the authors identified a likely connection between TTP implementation and an improved well-being for construction professionals and their families. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Ransolin2024, author={Ransolin, Natália and Saurin, Tarcísio Abreu and Formoso, Carlos Torres and ClayWilliams, Robyn and Rapport, Frances }, editor={ }, title={Built Environment Design Knowledge Framework Supportive of Resilient Healthcare}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={60-71}, url={http://www.iglc.net/papers/details/2199}, doi={10.24928/2024/0186}, affiliation={ Postdoctoral Research Fellow, Australian Institute of Health Innovation, Macquarie University, Sydney, Australia, natalia.ransolin@mq.edu.au, orcid.org/0000-0002-7128-8000 ; Professor, Industrial Engineering Post-Graduation Program, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil, saurin@ufrgs.br, orcid.org/0000-0003-2929-5888 ; Professor, Civil Engineering Post-Graduation Program: Construction and Infrastructure, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil, formoso@ufrgs.br, orcid.org/0000-0002-4772-3746 ; Professor, Australian Institute of Health Innovation, Macquarie University, Sydney, Australia, robyn.clay williams@mq.edu.au, orcid.org/0000-0002-6107-7445 ; Honorary Professor, Australian Institute of Health Innovation, Macquarie University, Sydney, Australia, frances.rapport@mq.edu.au orcid.org/0000-0002-4428-2826 }, abstract={Although the evidence-based design (EBD) literature investigating the influence of the built environment (BE) on health services performance and outcomes is extensive, its contribution to resilient healthcare is scarce. This work presents a framework of BE design knowledge supportive of resilient healthcare. Firstly, a systematic literature review based on EBD, complexity, and resilience resulted in generic BE design knowledge that represented the role of BE in supporting resilient healthcare at different levels of abstraction. Next, the knowledge was used for thematic analysis in case studies in two teaching hospitals, tailored to workflows that occurred in the connecting areas to and from an intensive care and other hospital units of a large public hospital in Brazil and the surgical service of a private hospital in Australia. Joint findings allowed the development of a framework hierarchically composed of four meta-principles, seven principles, seven prescriptions, and 181 practical examples emphasizing a systems perspective that considers intra and inter-hospital workflows and areas. The resulting knowledge guides designers of both BE and operations phases during decision-making to support resilient health services. As a limitation, the framework was not applied during those phases, representing one of the main suggestions for future work. }, author_keywords={Evidence-based Design, Built environment, Complexity, Resilient Healthcare. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Vieira2024, author={Vieira, João P. P and Pimentel, Fernanda M. and Etges, Bernardo M. B. S. and Silva, Jayane N. F. and Bonkowsky, Pedro H. and Bronholo, Cassiano and Fireman, Marcus C. T. and Bungardi, Bogdan }, editor={ }, title={Last Planner System: Pull Planning as a Documentation Management Tool in Photovoltaic Projects}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={72-83}, url={http://www.iglc.net/papers/details/2200}, doi={10.24928/2024/0197}, affiliation={ M.Sc. Eng., Lean Consultant at Climb Consulting Group, Porto Alegre, Brazil, joao@climbgroup.com.br, orcid.org/0000-0003-0292-2570 ; Lean Consultant at Climb Consulting Group, Graduate in Civil Eng. at Pucrs, Porto Alegre, Brazil. fernanda@climbgroup.com.br, orcid.org/0000-0003-0230-4326 ; PhD Candidate, M.Sc. Eng., Founding-Partner at Climb Consulting Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil, bernardo@climbgroup.com.br, orcid.org/0000-0002-3037-5597 ; Eng., Planning and Cost at Motrice Energy Solutions | BN Engineering, São Paulo, Brazil, jayane.silva@consorciopanati.com.br ; Lean Consultant at Climb Consulting Group, Graduate in Civil Eng. at University of Taubaté, Taubaté pedro@climbgroup.com.br ; Project Coordinator at Climb Consulting Group, Post Graduated in Engineering Commissioning at Federal University of Paraná, Curitiba, Brazil. cassiano@climbgroup.com.br ; PhD Candidate, M.Sc. Eng., Founding-Partner at Climb Consulting Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil, marcus@climbgroup.com.br, orcid.org/0000-0001-5843-4715 ; PhD Candidate Politehnica University Timisoara, Project Manager at Goldbeck Sollar, bogdan.bungardi@goldbecksolar.com }, abstract={The article discusses the application of the Last Planner System (LPS) in the context of infrastructure projects, focusing specifically on the renewable energy sector. A Brazilian company specialized in the design and construction of photovoltaic plants was chosen as the research scenario. LPS was introduced to the company as a tool for production control and management, providing stability to the production system. This article explores the application of LPS in design management, highlighting the complexity of the construction design process and proposing the integration of LPS principles into design management. Pull planning was incorporated into design management to establish a reliable flow in the iterative work performed by designers. The pull planning process is described in detail, including the creation of process flows, document analysis, board assembly, milestone definition, task segmentation of process flows, and weekly schedule structuring. Challenges were identified during the practical application of the tool, leading to the conclusion that there is room for improvement. In summary, this study demonstrates the potential of LPS and pull planning in improving the management of infrastructure projects, with a specific emphasis on documentation and design management in photovoltaic projects. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Drevland2024, author={Drevland, Frode and Svalestuen, Fredrik }, editor={ }, title={The Design-Construction Communication Loop: A Conceptual Model for Communication Error Analysis}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={24-35}, url={http://www.iglc.net/papers/details/2201}, doi={10.24928/2024/0204}, affiliation={Associate Professor, Norwegian University of Science and Technology (NTNU), Trondheim, Norway, frode.drevland@ntnu.no, orcid.org/0000-0002-4596-1564 ; Director of Process and Production, Veidekke Norge, Trondheim, Norway, fredrik.svalestuen@veidekke.no, orcid.org/0009-0004-4662-4617 }, abstract={The paper introduces a novel conceptual model designed to analyse and mitigate communication errors within the design-construction interface of construction projects. Recognising the complexity of communication in construction projects, the model integrates three foundational theories: Koskela’s Transformation-Flow-Value (TFV) theory, Gero’s Function-Behaviour-Structure (FBS) model, and Shannon and Weaver’s communication theory. This interdisciplinary approach allows for a comprehensive examination of the information flow between the design and construction processes, highlighting potential transformation and flow errors at each stage. The model categorises errors into transformation errors, intrinsic to specific processes, and flow errors, which result from upstream issues, providing a framework for targeted quality control measures and root cause analysis. However, the model acknowledges its limitation in addressing the temporal aspects of communication, a critical factor in construction project management. The paper argues that, despite this limitation, the model offers significant insights for academics and practitioners by providing a structured method to identify, analyse, and address communication errors, thereby enhancing the efficiency and effectiveness of information exchange in construction projects. }, author_keywords={Lean construction, theory, construction communication, information flow }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Pitman2024, author={Pitman, Oliver and Wijayaratna, Kasun and da Rocha, Cecilia G. }, editor={ }, title={A New Automated System for RFI Processing: Lead Time Reductions and Staff Perception}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={84-94}, url={http://www.iglc.net/papers/details/2202}, doi={10.24928/2024/0110}, affiliation={Alumnus, Faculty of Engineering & IT, University of Technology Sydney (UTS), Australia, Oliver.T.Pitman@student.uts.edu.au ; 2Senior Lecturer, Faculty of Engineering & IT, University of Technology Sydney (UTS), Australia, Kasun.Wijayaratna@uts.edu.au ORCID 0000-0002-4604-7256 ; Senior Lecturer, Faculty of Engineering & IT, University of Technology Sydney (UTS), Australia, Cecilia.Rocha@uts.edu.au ORCID 0000-0001-6764-1724 }, abstract={This paper presents the results of a New Automated System for managing the Request for Information (RFI) process for a Tier 1 Contractor in Australia. A before and after case study entailing two projects was carried out: one using a traditional system based on manual email exchanges (Project S) and one using the new proposed system (Project P). The results show considerable reduction in the standard deviation and average time for completing the requests for information, suggesting a streamlined and more reliable RFI process. Survey results also presented favorable outcomes, with staff noting that Project P encounters fewer delays or instances of unanswered requests. Staff also expressed greater confidence in the accuracy and reliability of responses, along with increased satisfaction regarding collaboration, communication, and the overall performance of the new system. This paper illustrates how lean principles such as “simplify” and “reduce lead time” in combination with a relatively simple innovation can create objective and subjective benefits. Furthermore, it provides practical example showcasing that such innovations do not need to be top-to-bottom driven but can be created and implemented by junior/entering level staff. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Sepúlveda2024, author={Sepúlveda, Italo and Alarcón, Luis F. and Mesa, Harrison A. }, editor={ }, title={Perceptions of Collaborative Contracts From the Perspective of Lean Construction in Chile}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={95-107}, url={http://www.iglc.net/papers/details/2203}, doi={10.24928/2024/0126}, affiliation={PhD Student, Department Construction Engineering and Management, Pontificia Universidad Católica de Chile, Santiago, Chile. Professor, Faculty of Architecture, Construction and Environment, Universidad Autónoma de Chile, Santiago, Chile ilsepulveda@uc.cl, orcid.org/0000-0002-6019-9344 ; Professor, Department of Construction Engineering and Management, Pontificia Universidad Católica de Chile, Santiago, Chile, lalarcon@uc.cl, orcid.org/0000-0002-9277-2272 ; School of Civil Construction, Faculty of Engineering, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Santiago, Chile, orcid.org/0000-0002-7050-3610 / Centro Nacional de Excelencia para la Industria de la Madera (CENAMAD), Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Santiago, Chile }, abstract={Pursuing more efficient and collaborative methods in the construction industry has increased interest in collaborative contracts and Lean Construction. Despite their potential benefits, there is a lack of clarity in understanding and applying collaborative contracts in Chile. This study aims to assess the level of knowledge and perceptions about collaborative contracts among construction professionals in Chile and to explore how lean tools and principles support the implementation of these contracts. It employs a two-fold research methodology: a survey to gather empirical data, followed by a comprehensive literature. The survey focused on collecting data on the experience and perceptions of collaborative contracts, while the literature review sought to identify the intersection of these contracts with Lean Construction. The findings revealed a limited and varied understanding of collaborative contracts. Perceived benefits, such as improved efficiency and collaboration, aligned with the principles of Lean Construction. However, challenges were also identified, including the need for greater initial investment, cultural barriers, and complexity in managing multiple projects. The study emphasizes the need for a well-defined concept of collaborative contracts in Chile and posits Lean Construction as a vital tool to address challenges and bolster their implementation. }, author_keywords={Lean Construction, Collaboration, Contracts, Management, Construction. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Saunders2024, author={Saunders, Lachlan and Wijayaratna, Kasun and da Rocha, Cecilia G. }, editor={ }, title={Traditional Tender Versus Early Contractor Involvement (ECI): A Comparative Analysis of Work Hours}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={108-118}, url={http://www.iglc.net/papers/details/2204}, doi={10.24928/2024/0131}, affiliation={Alumnus, Faculty of Engineering & IT, University of Technology Sydney (UTS), Australia, Lachlan.Saunders@student.uts.edu.au ; 2Senior Lecturer, Faculty of Engineering & IT, University of Technology Sydney (UTS), Australia, Kasun.Wijayaratna@uts.edu.au ORCID 0000-0002-4604-7256 ; Senior Lecturer, Faculty of Engineering & IT, University of Technology Sydney (UTS), Australia, Cecilia.Rocha@uts.edu.au ORCID 0000-0001-6764-1724 }, abstract={The strategy of Early Contractor Involvement (ECI), wherein contractors participate in a project’s design and planning stages, is seen as an effective approach to address inefficiencies and complex interpersonal dynamics of construction projects. These challenges arise from contracting and procurement systems that do not promote collaboration, leading to delays and increased costs. Tendering, marked by competition and unpredictability, mirrors the industry’s fragmentation and waste. Contractors face issues such as scope ambiguity, flawed documentation, market volatility, strict deadlines, and probity. This paper conducts a comparative analysis of two infrastructure projects in Australia, involving a tier 1 Contractor. Each project underwent both a traditional tender and ECI, facilitating comparisons. The results indicate that ECI tends to extend the time and resources utilized by contractors, with Project 1 and Project 2 experiencing increases of 12 weeks and 10 weeks, respectively, along with additional work hours and personnel. Despite ECI increasing time and resources, it improves the tendering process by enhancing certainty, focus, and communication. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Machozi2024, author={Machozi, Faustin M and Lædre, Ola and Wondimu, Paulos }, editor={ }, title={Competitive Negotiated Procedure: Experiences From Rv. 555 the Sotra Connection}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={119-130}, url={http://www.iglc.net/papers/details/2205}, doi={10.24928/2024/0144}, affiliation={MSc, Norwegian University of Science and Technology (NTNU)/ Project Engineer HENT AS, Trondheim, Norway, +47 941 16 094, faustin.machozi@hent.no, orcid.org/0009-0000-8440-9652 ; Professor, dr. ing., Norwegian University of Science and Technology (NTNU), Trondheim, Norway, ola.ladre@ntnu.no, orcid.org/0000-0003-4604-8299 ; PhD, Norwegian Public Roads Administration (NPRA), Trondheim, Norway, paulos.wondimu@vegvesen.no, orcid.org/0000-0001-9421-594X }, abstract={To reduce the number of conflicts in their projects, the Norwegian Public Roads Administration has implemented procurement procedures which allow dialogue and negotiation before the signing of contracts. One of these procedures is the Competitive Negotiated Procedure (CNP). The literature that addresses the implementation and experiences of CNP is limited, despite it has existed for several years. The purpose of this paper is to explore how the CNP can be improved for future use. The study has been carried out as a literature review and a case study. The case study investigated the infrastructure project Rv. 555 Sotra Connection and consisted of a document study and fourteen semi-structured interviews with representatives from the client and the qualified suppliers. The implementation of the procedure was divided into five phases. There were challenges with the procedure. Both the client and the suppliers encountered challenges with the zoning plan, which limited the supplier’s ability to implement cost-saving alternatives. The suppliers experienced challenges regarding the client’s evaluation of the most economically advantageous tender (MEAT). Both the client and the suppliers highlight that the CNP is demanding, but it allows clarification of ambiguities and risks before contract signing. This reduces the risk of future conflicts. }, author_keywords={Lean Construction, Competitive Negotiated Procedure (CNP), Procurement, Collaboration, Most Economically Advantageous Tender (MEAT) }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Ørke2024, author={Ørke, Johan Christie and Engebø, Atle and Lædre, Ola }, editor={ }, title={Strategic Partnerships Between Project Client and Client’s Agent}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={131-142}, url={http://www.iglc.net/papers/details/2206}, doi={10.24928/2024/0168}, affiliation={M.Sc. student, Department of Civil and Environmental Engineering, Norwegian University of Science and Technology, Trondheim, Norway, johan.c.orke@ntnu.no, orcid.org/0000-0002-9040-6762 ; Researcher, Department of Civil and Environmental Engineering, Norwegian University of Science and Technology, Trondheim, Norway, atle.engebo@ntnu.no, orcid.org/0000-0002-5293-0176 ; Professor, Department of Civil and Environmental Engineering, Norwegian University of Science and Technology, Trondheim, Norway, ola.ladre@ntnu.no, orcid.org/0000-0003-4604-8299 }, abstract={Strategic partnership is an emerging project delivery method characterized by long-term collaboration in multiple projects. In this paper, we seek to increase the knowledge about strategic partnerships. From a lean perspective, strategic partnerships could be a potential measure towards mitigating inefficiency caused by lacking continuity and previous relationships. Our purpose is to reveal aspects that can help clients and client’s agents organize better strategic partnerships. The client’s agent is the contracted adviser who takes care of all the functions which the client’s project management cannot handle. A literature review and a case study were conducted, where the case study included eight semi-structured interviews. The findings identify several benefits regarding soft factors in a strategic partnership. However, some challenges are also identified, especially by the client. Based on the findings, four measures are suggested to improve strategic partnerships between client and client’s agent: Mutually helping the other part get new projects, ensuring competence development, ensuring availability of demanded qualifications, and more focus on the long-term and future perspective of the strategic partnership. }, author_keywords={Lean construction, contract and cost management, strategic partnerships, client’s agent. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Weinmann2024, author={Weinmann, Marc and Baier, Carolin and Miguel, Ana Schilling and Haghsheno, Shervin }, editor={ }, title={Structuring Approach and Current Status of Integrated Project Delivery (IPD) in Germany}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={143-154}, url={http://www.iglc.net/papers/details/2207}, doi={10.24928/2024/0171}, affiliation={Research Associate, Department of Civil Engineering, Geo and Environmental Sciences, Karlsruhe Institute of Technology, Karlsruhe, Germany, marc.weinmann@kit.edu, orcid.org/0000-0003-3871-0553 ; Research Associate, Department of Civil Engineering, Geo and Environmental Sciences, Karlsruhe Institute of Technology, Karlsruhe, Germany, carolin.baier@kit.edu, orcid.org/0000-0002-2790-9586 ; Research Associate, Department of Civil Engineering, Geo and Environmental Sciences, Karlsruhe Institute of Technology, Karlsruhe, Germany, ana.miguel@kit.edu, orcid.org/0009-0002-7983-3840 ; Professor, Department of Civil Engineering, Geo and Environmental Sciences, Director, Karlsruhe Institute of Technology, Karlsruhe, Germany, shervin.haghsheno@kit.edu, orcid.org/0000-0002-0602-6370 }, abstract={The construction industry has been striving for some time to find efficient ways to ensure the successful delivery of project goals for all project participants and stakeholders, while at the same time improving the quality of collaboration and overall productivity. In addition to the use of collaborative methods and tools, Integrated Project Delivery (IPD), developed in the early 2000s, represents an innovative approach to deliver construction projects. Due to the positive results of initial pilot projects, IPD is increasingly attracting international interest. Since 2018, IPD approaches have also been used in pilot projects in Germany. This article presents the current state of research on the development of IPD in Germany and highlights the status of its practical application. Twenty IPD projects in Germany are identified, documented, and analyzed based on various criteria. For the first time, this paper creates transparency on an international level about the five-year development of IPD in Germany. It also provides a basis for more in-depth analysis, particularly regarding the qualitative aspects of the IPD pilot projects carried out in Germany. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{P2024, author={P, Prabhu and M, Nalin and U, Ashwetha and V, Aravind and H, Jayarama }, editor={ }, title={Lean Contract, Collaborative Power: Accelerating Delivery in Underground Metro Project}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={155-166}, url={http://www.iglc.net/papers/details/2208}, doi={10.24928/2024/0207}, affiliation={Assistant Manager, Planning, CMRL TU02 Project, Larsen & Toubro Construction, Chennai, India, 7305097121, prabhu.p1@lntecc.com ; Manager, Planning, CMRL Projects, Larsen & Toubro Construction, Chennai, India, 9840684003, nalinm@lntecc.com ; Construction Manager, TFL, CMRL Projects, Larsen & Toubro Construction, Chennai, India, 9500812844, ashwethakumar@lntecc.com ; Senior Planning Engineer, TU02 Project, CMRL Projects, Larsen & Toubro Construction, Chennai, India, 9487450657, aravind.v@lntecc.com ; Vice President, Project Director, CMRL Projects, Larsen & Toubro Construction, Chennai, India, 9819436227, h-jayarama@lntecc.com }, abstract={This paper examines the practical implementation of lean principles in the contract management and operations of the TU 02 underground metro project in Chennai City, India. The project, a crucial component of Chennai Metro Rail Limited's Phase 2 development spanning 116 km, stands out for its intricate collaboration with multiple contractors. Despite its scale and complexity, CMRL TU 02 project team has embraced lean management principles since its inception. The project encountered about 24-months of delay due to the unavailability of shafts for lowering and retrieving TBMs. This paper provides a detailed analysis of the lean principles applied in Contracts Management to reduce this delay from 24 months to 18 months. The collaborative approach to lean management with clients and General consultants not only mitigated the schedule delay but also minimized TBM idle time, a critical aspect with high risks. Additionally, process optimization techniques, such as Value Stream Mapping (VSM) in the precast yard and TBM lowering cycle time reduction at the project site, are explored, showcasing the effectiveness of lean concepts in complex construction projects. }, author_keywords={Lean construction, Lean Contract Management, Enhancing project efficiency, Value Stream Mapping (VSM), Big Room Planning and Collaborative Planning }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Keorapetse2024, author={Keorapetse, Margaret P. and Utzig, Helena and Formoso, Carlos T. }, editor={ }, title={Cost Control in Modular Construction: A Taxonomy for Effective Cost Management}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={167-178}, url={http://www.iglc.net/papers/details/2209}, doi={10.24928/2024/0215}, affiliation={Ph.D. Student, Building Innovation Research Unit (NORIE), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil, margaret.keorapetse@ufrgs.br, http://orcid.org/0000-0003-1037-5968 ; MSc Student, Building Innovation Research Unit (NORIE), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil, helenautzig@gmail.com, http://orcid.org/0000-0002-8213-4808 ; Professor, Building Innovation Research Unit (NORIE), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil, formoso@ufrgs.br, http://orcid.org/0000-0002-4772-3746 }, abstract={The cost effects of modular construction, which shares the same principles with lean construction, have been a subject of debate among researchers, with contrasting perspectives on how to control costs, compared to traditional construction cost management methods. Proponents of modular construction indicate that it can potentially be cost effective compared to traditional construction. As modular construction is gaining momentum in the construction industry, slowly replacing traditional on-site construction methods, there is a need for new cost control methods. The unique characteristics of modular construction create distinctive cost control difficulties. In this article, an attempt is made to showcase challenges and factors influencing costs in modular construction. The aim of the study is to propose a taxonomy of costs for modular construction processes. The study is ongoing and preliminary results presented in this article seek to understand the production process of modular construction, its associated costs and highlight potential cost control methods that align with the unique features of modular construction. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Gabai2024, author={Gabai, Doron S. and Haronian, Eran and Kennard, Nikita S. and Sacks, Rafael and Miera, Mark K. and Cloyd, Tabitha D. }, editor={ }, title={Doubling Throughput With Optimized Cycle-Time Flow (OCF) Strategy}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={179-189}, url={http://www.iglc.net/papers/details/2210}, doi={10.24928/2024/0132}, affiliation={PMP, PgMP, LCI Israel Chairman, Strategic Planner, Intel Corporation, AZ Construction, USA. doron.gabai@intel.com, https://www.lci-israel.org/, ; Lecturer, Department of Civil Engineering, Ariel University, Ariel, 40700, Israel, eranha@ariel.ac.il ; OCF Research Specialist, Intel Corporation, AZ Construction, USA. nikita.kennard@intel.com ; Professor, Virtual Construction Laboratory, Faculty of Civil and Env. Eng. Technion – Israel Institute of Technology, cvsacks@technion.ac.il, orcid.org/0000-0001-9427-5053 ; PMP, Senior Director of Construction, Intel Corporation, AZ Construction, USA. mark.k.miera@intel.com ; Director of Construction, Intel Corporation, AZ Construction, USA. tabitha.d.cloyd@intel.com }, abstract={Despite the availability of advanced managerial tools and technologies for project planning and control, projects failing to meet schedules and budget targets remains a common phenomenon. We argue that a root cause for these failures is the absence of strategic planning. Optimized Cycle-time Flow (OCF) is a strategy developed by Intel Inc., that enables teams to plan portfolios of projects subject to resource constraints and the principles of flow, while avoiding the pitfalls of the planning fallacy and unnecessary time-extensions. This paper presents a thorough exploration of OCF through a case study in a typical installation project, one of the first OCF implementations. Practical applications of the principles of OCF are explored through analysis of construction plans and interviews with key personnel. The paper provides supplementary observations and validation of empirical findings regarding the effectiveness of OCF. The multi-project environment and the sense of urgency to reduce time-to-market are recognized as a catalyzer for OCF. The case study highlights the importance of critical production thinking as manifested in the first two OCF principles: “Plan and Integrate Strategically” and “Plan Tactical Targets”. }, author_keywords={Constraint Management, Design Science Research, Last Planner® System, Optimized Cycle-Time Flow (OCF), Production Control, Strategic Integration & Planning, Target Pull-Plan }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Cossio2024, author={Cossio, Bernardo de and Murguia, Danny and Cossio, Jorge Gonzalez de and Cossio, Jorge Antonio Gonzalez de }, editor={ }, title={Reduction of Floor Cycle Time Variability in High-Rise Building Construction}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={190-201}, url={http://www.iglc.net/papers/details/2211}, doi={10.24928/2024/0139}, affiliation={Senior Project Manager, ITN de Mexico, Mexico, bcossio@itnmexico.com, orcid.org/0009-0005-3556-8629 ; Senior Research Associate, Department of Engineering, University of Cambridge, United Kingdom, dem52@cam.ac.uk, orcid.org/0000-0003-1009-4058 ; Director, ITN de Mexico, Mexico, jcossio@itnmexico.com, orcid.org/0009-0001-4949-827 ; Senior Project Manager, ITN de Mexico, Mexico, acossio@itnmexico.com, orcid.org/0009-0005-0963-5621 }, abstract={High-rise building construction projects, characterized by their inherent complexity and susceptibility to unpredictable variations such as complex logistics, weather, and resource availability, often face challenges in maintaining schedule reliability. Despite the potential for optimization due to the repetitive nature of high-rise structures, traditional planning methods struggle to address the cascading effects of variability, resulting in long cycle times for completed floors and frequent shifts in estimated completion dates. This paper presents the outcomes of implementing a Last Planner System (LPS)-based strategy for the structural frame of two high-rise buildings. Key performance metrics such as cycle time, production rates, and labor productivity were chosen to evaluate the impact. The findings demonstrate that detailed operational planning and interventions to support continuous improvement reduce the floor cycle time and its variability. Furthermore, the results offer tangible evidence of actual performance, providing practitioners with the necessary data to create more realistic master plans. This approach enhances the operational efficiency of high-rise construction projects and contributes to the broader understanding of effective strategies for managing schedule variability. }, author_keywords={Phase scheduling, flow, variability, continuous improvement, standardization. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Tommelein2024, author={Tommelein, Iris D. and Coelho, Rafael V. and Formoso, Carlos T. and Barth, Karina B. and Vargas, Fabrício Berger de }, editor={ }, title={No Single Takt Planning Method Fits All Projects}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={202-213}, url={http://www.iglc.net/papers/details/2212}, doi={10.24928/2024/0151}, affiliation={Distinguished Professor, Civil and Envir. Eng. Dept., Director, Project Production Systems Laboratory (P2SL), University of California, Berkeley, CA, USA, tommelein@berkeley.edu, orcid.org/0000-0002-9941-6596 ; PhD Candidate, Civil and Envir. Eng. Dept. and Project Production Systems Laboratory (P2SL), University of California, Berkeley, CA, USA, rvcoelho@berkeley.edu, orcid.org/0000-0003-3298-3622 ; Professor, Building Innovation Research Unit (NORIE), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil, formoso@ufrgs.br, orcid.org/0000-0002-4772-3746 ; Researcher, Building Innovation Research Unit (NORIE), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil, kbertotto@gmail.com, orcid.org/0000-0001-9612-6246 ; PhD Student, Building Innovation Research Unit (NORIE), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil, engfabriciovargas@gmail.com, orcid.org/0000-0001-6622-0020 }, abstract={Takt planning methods have been used to plan and control production of a variety of construction projects that have been delivered in various contexts. Recognizing that projects vary by type based on different product- and process designs as well as contextual characteristics of relevance to project production, not one but several takt planning methods have therefore emerged. This paper presents the objectives pursued in takt planning and describes projects by type and context, based on their complexity, in relation to these objectives. It outlines several takt planning methods and then matches those methods to project types and contexts. It is clear that no single takt planning method fits all projects and also that takt planning may not be a suitable method to plan some projects. This paper aims to shed light on available takt planning methods and on choosing which one to use when considering the complexity of a given project and its context. }, author_keywords={Takt planning, takt production, work structuring, complexity, uncertainty, variability, slack. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Melgar-Morales2024, author={Melgar-Morales, Mauricio A. and Erazo-Rondinel, Andrews A. and Abregu-Gonzales, Josep J. and Nuñez-Quispe, Ronald R. and Cruz-Huamani, Carlos I. and Ccoyllar-Escobar, Isaac M. }, editor={ }, title={A Review of Poka Yoke in Construction Projects: Classification, Benefits and Barriers}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={214-225}, url={http://www.iglc.net/papers/details/2213}, doi={10.24928/2024/0152}, affiliation={Student Researcher, Faculty of Civil Engineering, Universidad Nacional de Ingeniería, Lima, Peru, mauricio.melgar.m@uni.pe, orcid.org/0009-0007-6491-4134 ; Teaching Assistant, Professional School of Civil Engineering, Universidad Continental, Huancayo, Peru, aerazo@continental.edu.pe, orcid.org/0000-0002-5639-573X ; Student Researcher, Faculty of Civil Engineering, Universidad Nacional de Ingeniería, Lima, Peru, josep.abregu.g@uni.pe, orcid.org/0009-0003-5663-0474 ; Student Researcher, Faculty of Civil Engineering, Universidad Nacional de Ingeniería, Lima, Peru, ronald.nunez.q@uni.pe, orcid.org/0009-0006-0993-4442 ; Researcher, Faculty of Civil Engineering, Universidad Nacional de Ingeniería, Lima, Peru, carlos.cruz.h@uni.pe, orcid.org/0009-0002-4604-1935 ; Student Researcher, Faculty of Civil Engineering, Universidad Nacional de Ingeniería, Lima, Peru, isaac.ccoyllar.e@uni.pe, orcid.org/0000-0003-3736-0993 }, abstract={The construction industry is a critical sector in the economy of countries; however, it has low productivity and is associated with errors and rework. In response, poka yoke or mistake-proofing devices have been developed to avoid errors or reduce the possibility of committing them. Their application has been documented in manufacturing and, to a lesser extent, in the construction sector, where the literature on this subject is scarce. Therefore, the following article aims to develop a literature review of poka yoke in the construction sector. To this end, a literature review was conducted using PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analysis). Twenty-five articles related to poka yoke were analyzed. From the literature review, it was obtained that the main poka yoke found corresponds to the principle of facilitation; the main benefits reported were improvement of quality and performance and reduction of errors, and the main barrier is the lack of training on the subject. The following article will contribute to professionals and researchers in the construction sector to have a better understanding of the applications of poka yoke. }, author_keywords={Poka yoke, mistake-proofing, Lean Construction, PRISMA }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Tommelein2024, author={Tommelein, Iris D. }, editor={ }, title={About Time-Cost Trade-Offs in Takt Planning}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={226-237}, url={http://www.iglc.net/papers/details/2214}, doi={10.24928/2024/0157}, affiliation={Distinguished Professor, Civil and Environmental Engineering Department, and Director, Project Production Systems Laboratory, University of California, Berkeley, USA, tommelein@berkeley.edu, orcid.org/0000-0002-9941-6596 }, abstract={Time-cost trade-off problems in construction scheduling are well known and described in the literature, but time-cost trade-off problems pertaining specifically to takt planning have received little attention to date. Previous papers have introduced concepts and applications of takt planning (aka. takt production) in construction. They addressed production systems design questions and presented various takt planning methods. Quite a few of those papers also mentioned how takt planning helps cope with variability that is known at the time of planning and with the manifestation of variability when it is encountered during plan execution. Coping methods include the use of capacity- (people and their means of production), materials- (inventory), space-, and time buffers. These buffers—and of course money too (financial buffers or contingencies)—come at a cost. This paper explores various costs to be considered in the takt planning process and it presents trade-offs that can be made to meet selected objectives. The goal is to initiate discussion on this topic and help spur further quantification of the advantages of using takt when designing project production systems. }, author_keywords={Takt planning, buffers, slack, direct cost, indirect cost, fixed cost, variable cost, cost management, buffer management. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Alhava2024, author={Alhava, Otto and O’Loughlin, Matthew and Haapasalo, Harri and Viitanen, Jaakko and Pitkäranta, Tomi }, editor={ }, title={Rigorous 2-Hour Takt Reveals Upstream Underperformance}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={238-249}, url={http://www.iglc.net/papers/details/2215}, doi={10.24928/2024/0219}, affiliation={CTO, Flow Technologies Oy, Helsinki, Finland, otto.alhava@fira.fi, orcid.org/0000-0001-8820-0522 ; Site manager, Fira Rakennus Oy, Vantaa, Finland, matthew.oloughlin@fira.fi, orcid.org/0009-0005-1317-8355 ; Professor, Department of Industrial Engineering and Management, University of Oulu, Finland, harri.haapasalo@oulu.fi, orcid.org/0000-0001-5413-5638 ; Project director, Fira Rakennus Oy, Vantaa, Finland, jaakko.viitanen@fira.fi, orcid.org/0009-0006-7343-2797 ; Head of Product, Sitedrive Oy, Helsinki, Finland, tomi.pitkaranta@sitedrive.com, orcid/ 0000-0003-1100-0578 }, abstract={The primary purpose of this study is to demonstrate that rigorous production control requires high quality and flawlessness in the upstream production process. The research approach is a quantitative case study. One-piece flow forms the theoretical framework combined with the “sea of inventories” logic. The empirical material is collected from the case company’s renovation projects’ data, documentation, meeting minutes, and training material. The definition, modelling, and analysis of the production system are fundamental to continuous improvement in construction. Systematic analysis, documentation, quality control, and quality assurance enable fact-based improvement and control of the production system. Our study, following the logic of continuously tightening requirements for control variables in the production flow, reveals upstream underperformance and drives the elimination of the problems, thus improving efficiency. In our case, company evidence shortening the takt from 4 hours to 2 hours reveals hidden problems in upstream flow, resulting in continuous improvement in production quality. Overall, our study provides evidence of the applicability of one-piece flow in construction. }, author_keywords={One-piece flow, Toyota Production System, JIT, Takt }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Munkvold2024, author={Munkvold, Malin Furuli and Drevland, Frode }, editor={ }, title={Short Takt in Construction: A Systematic Literature Review}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={250-260}, url={http://www.iglc.net/papers/details/2216}, doi={10.24928/2024/0226}, affiliation={M.Sc. Graduate, Norwegian University of Science and Technology (NTNU), Trondheim, Norway. ; Associate Professor, Norwegian University of Science and Technology (NTNU), Trondheim, Norway, frode.drevland@ntnu.no, orcid.org/0000-0002-4596-1564 }, abstract={Over the past decade, Takt planning has steadily gained ground as a production system design scheme in construction projects. The approach entails organising trades as wagons in a train and running that train through a set of designated work areas in a building, with the train making regular stops and the wagons spending a fixed amount of time – the takt – in each area. The most common takt in construction projects is weekly takt. While using a shorter takt in combination with smaller work areas yields a shorter overall execution time, there is limited research on the actual consequences and feasibility of reducing takt time in practice. This paper conducts a systematic literature review on using short takt in construction projects, seeking to consolidate existing knowledge and suggest avenues for future research. From searches in the Scopus and IGLC.net databases, the paper identifies 13 articles related to using short takt in construction projects. The articles are analysed using thematic coding, revealing seven themes: maturity, planning and preparation, production monitoring, visual management,mock-ups, logistics, and collaboration. Key insights include the importance of rigorous follow-up during production and the advantage of experience in managing short takt times. The paper concludes that the sum of existing knowledge on short takt times in construction is limited, offering minimal practical guidance for implementation. This identifies an urgent need for further research to fill this significant gap. }, author_keywords={Lean construction, production system design, takt, short takt }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Wang2024, author={Wang, Zhong and Sabek, Mohamed and Wu, Yulun and Mei, Qipei and Lee, Gaang and González, Vicente A. }, editor={ }, title={Digital Twin Based Integrated Decision Support System for Enhanced Decision-Making in the Last Planner System}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={609-621}, url={http://www.iglc.net/papers/details/2217}, doi={10.24928/2024/0117}, affiliation={PhD Student, Department of Civil and Environmental Engineering, Faculty of Engineering, University of Alberta, Canada, zhong15@ualberta.ca, 0000-0002-7113-3439 ; PhD Student, Department of Civil and Environmental Engineering, Faculty of Engineering, University of Alberta, Canada, sabek@ualberta.ca, 0009-0005-2906-9874 ; PhD Student, Department of Civil and Environmental Engineering, Faculty of Engineering, University of Alberta, Canada, yulun6@ualberta.ca, 0000-0003-4281-4961 ; Assistant Professor, Department of Civil and Environmental Engineering, Faculty of Engineering, University of Alberta, Canada, qipei@ualberta.ca, 0000-0003-1409-3562 ; Assistant Professor, Department of Civil and Environmental Engineering, Faculty of Engineering, University of Alberta, Canada, gaang@ualberta.ca, 0000-0002-6341-2585 ; Professor, Department of Civil and Environmental Engineering, Faculty of Engineering, University of Alberta, Canada, vagonzal@ualberta.ca, 0000-0003-3408-3863 }, abstract={This paper discusses the enhancement of decision-making within the Last Planner System (LPS) through digitalization, emphasizing the role of a Digital Twin-based Integrated Decision Support System (DT-IDSS) aligned with Lean Construction 4.0 principles. The proposed conceptual framework DT-IDSS aims to address the challenges in LPS decision-making in terms of autonomation, data integrity, user-centricity, and decision-making rapidness, by integrating user-centric design with advanced technologies such as Digital Twins, Internet of Things, Blockchain, and Artificial Intelligence. It features a decentralized reality capture flow for data processing and storage, and an information loop fostering collaborative stakeholder engagement. The system's user-centric development loop adopts an agile, iterative approach, meeting the dynamic needs of construction projects. The integrations of workflows and technologies in the proposed framework has a huge potential in addressing challenges in the deficiency in system integration, which are essential to effectively support information, computation, visualization, and services, thereby enabling stakeholders to make informed decisions. Future research will focus on assessing decision-making effectiveness, enhancing system scalability, improving data management security, and achieving interoperability with existing management systems. This research contributes to the digital transformation of decision-making process, aiming to provide guidance for future developments in this rapidly evolving field. }, author_keywords={Last Planner® System (LPS), Lean Construction 4.0, Integrated Decision Support System (IDSS), Digital Twin, Smart Digital Technologies (SDTs) }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Mounla2024, author={Mounla, Karim El and Beladjine, Djaoued and Beddiar, Karim }, editor={ }, title={Lean-BIM Synergy in the Construction Design Phase: Auto-Generation and Evaluation of Thermal Alternatives}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={622-631}, url={http://www.iglc.net/papers/details/2218}, doi={10.24928/2024/0121}, affiliation={CESI LINEACT, 230 Rue Roland Garros, 29490 Guipavas, Brest 29200, France, kelmounla@cesi.fr / 2 Brest Métropole, 24 Rue Coat ar Gueven, 29200 Brest, France. ; CESI LINEACT, 8 Rue Isabelle Autissier, 17140 Lagord, France. ; CESI LINEACT, 1 Av. Augustin-Louis Cauchy, 44307 Nantes, France. }, abstract={This study explores the integration of Lean principles with Building Information Modeling (BIM) to enhance decision-making in the relatively unexplored field of thermal design for construction projects. Recognizing the limitations of current design processes, characterized by insufficient alternatives and a lack of team collaboration, we introduce a new decision-making tool. This tool centers on a breakthrough framework and algorithm that bridge BIM with Lean techniques. It facilitates the automatic generation and evaluation of insulation material alternatives for residential buildings by integrating the Pleiades software database and Industry Foundation Classes (IFC) BIM data. Our study details an automated process for selecting insulation materials through an iterative, criteria-based approach that systematically identifies the three most viable solutions using Set-Based Design methods. It then selects the optimal one by examining and evaluating their criteria according to the project's needs based on energy efficiency, profitability, and sustainability through the Choosing By Advantages method. Additionally, by incorporating Big Room and BIM, our tool promotes enhanced communication and collaboration from the outset of the design phase, underscoring the significance of this integration in automating and optimizing thermal engineering projects. }, author_keywords={Lean Construction, Set-based Design, Choosing By Advantages, Building Information Modeling, Big Room }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Fatemifar2024, author={Fatemifar, Kamyar and Zeng, Qinghao and Pishdad, Pardis }, editor={ }, title={BIM and IoT Integration for Construction and Logistics Management: A State-of-the-Art Review}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={633-647}, url={http://www.iglc.net/papers/details/2219}, doi={10.24928/2024/0123}, affiliation={Ph.D. Student, School of Building Construction, Georgia Institute of Technology, USA, kfatemifar3@gatech.edu, orcid.org/0000-0003-4654-7960 ; Ph.D. Student, School of Building Construction, Georgia Institute of Technology, USA, qzeng41@gatech.edu, orcid.org/0000-0002-4313-6800 ; Associate Professor, School of Building Construction, Georgia Institute of Technology, USA, pardis.pishdad@design.gatech.edu, orcid.org/0000-0003-4208-9755 }, abstract={Considered a promising avenue for achieving improvements in construction and logistics management, the integration of Building Information Modelling (BIM) and the Internet of Things (IoT) has proposed the ability to revolutionize the Architectural, Engineering, Construction, and Facility Management (AECFM) industry. Many studies have been examining different applications of BIM and IOT integration, specifically within the context of industry 4.0 through recent years. However, the existing literature appears to be fragmented due to the absence of review and categorization, leading to difficulties for practitioners and researchers in identifying trends and gaps. This paper delves into the convergence of BIM and IoT within the field of construction and logistics management by reviewing and categorizing the current cited literature derived from various journals using OpenAlex. On the one hand, the results suggest the utilization of RFID and LoRa for logistics, tracking, and inventory management with BIM and IoT as the most frequent topic. On the other hand, the implementation of BIM and IoT for simulating emergency evacuation scenarios is the least mentioned topic. The main foci within each topic-subcategory are also highlighted and described respectively. }, author_keywords={Building Information Modeling, Internet of Things, Construction Management, Logistics Management }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Agrawal2024, author={Agrawal, Ajay Kumar and Zou, Yang and Chen, Long and Jin, Hongyu and Abdelmegid, Mohammed Adel }, editor={ }, title={An Ontology for Representing Crawler Crane Operational Space Requirement on Semantic Web}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={648-659}, url={http://www.iglc.net/papers/details/2220}, doi={10.24928/2024/0134}, affiliation={PhD Candidate, Department of Civil and Environmental Engineering, University of Auckland, Auckland, New Zealand, aagr657@aucklanduni.ac.nz, orcid.org/0000-0001-8669-3255 ; Senior Lecturer, Department of Civil and Environmental Engineering, University of Auckland, Auckland, New Zealand, yang.zou@auckland.ac.nz, orcid.org/0000-0001-6150-6126 ; Lecturer, School of Architecture, Building and Civil Engineering, Loughborough University, Leicestershire, UK, L.Chen3@lboro.ac.uk, orcid.org/0000-0002-6771-752X ; Lecturer, Department of Civil and Environmental Engineering, University of Auckland, Auckland, New Zealand, hongyu.jin@auckland.ac.nz, orcid.org/0000-0001-9316-6971 ; Lecturer, School of Civil Engineering, University of Leeds, Leeds, UK, M.Abdelmegid@leeds.ac.uk, orcid.org/0000-0001-6205-570X }, abstract={Lookahead planning incorporates checking and removing operational constraints to develop achievable plans. The manual constraint-checking process is arduous because (1) Construction constraints are dynamic due to constantly changing project conditions, and (2) The information concerning constraints, e.g., attributes and status, are dispersed across heterogeneous databases. While semantic web technology has been used to automate constraint-checking and address these issues, space constraints, e.g., space needed for resource operation, have often been ignored. Cranes are crucial construction resources, necessitating checking of associated space constraints for developing constraint-free lookahead plans. Representing crane operational space requirements on the semantic web should be the first step for such checking. However, existing ontologies cannot do so. This study aims to develop a Crane Space Representation Ontology (CSRO) to represent different components of the operational space of a crawler crane with a lattice boom. Built using Ontology Development 101 methodology, CSRO includes four classes, 19 subclasses, nine object properties, and seven datatype properties, representing crane operational space with diverse geometries like bounding box, cylinder, and cone. Automated consistency checking and task-based evaluation confirm the CSRO's consistency and effectiveness in addressing the competency questions regarding various aspects of space requirements for crane operation. }, author_keywords={Last Planner® System, Lookahead Planning, Constraint Analysis, Semantic Web, Crawler Crane. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Asmone2024, author={Asmone, Ashan Senel and Murguia, Danny and Rathnayake, Asitha and Middleton, Campbell }, editor={ }, title={Automated Data Capture and Analysis to Detect Process Waste in Interior Finishing Work}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={660-671}, url={http://www.iglc.net/papers/details/2221}, doi={10.24928/2024/0135}, affiliation={Research Associate, Department of Engineering, University of Cambridge, UK, asa79@cam.ac.uk, orcid.org/0000-0002-2173-3890 ; Senior Research Associate, Department of Engineering, University of Cambridge, UK, dem52@cam.ac.uk, orcid.org/0000-0003-1009-4058 ; PhD Candidate, Department of Engineering, University of Cambridge, UK, agbrr2@cam.ac.uk, orcid.org/0000-0002-1389-7801 ; Professor, Department of Engineering, University of Cambridge, UK, prof@construction.cam.ac.uk, orcid.org/0000-0002-9672-0680 }, abstract={Detecting process waste in complex production systems is still a challenge in construction projects. The integration of lean construction with automated data capturing technologies presents an opportunity to timely detect process waste and steer projects towards targets. By using vision-based technology for automated progress monitoring in a residential building, this study examines interior finishing work activities through the lenses of process/location flow and operations/trade flow. Location-based management tools (flowlines and line-of-balance) were used to visualise the data. Results showed that planned production deviated from actuals in all activities. Significant variability was observed within the completion of each activity at each location. The ratio between average production rate and exemplar performance indicated a missed opportunity to improve project performance. Resultantly, several waste types were identified including inefficient work, space not being worked in, unnecessary movement of people and unnecessary transportation of materials. The ability to actively pinpoint process waste provides managers with a granular understanding of inefficiencies, enabling targeted interventions to enhance productivity and reduce waste. The findings support that automated data capturing and analytics through the lenses of lean construction is a useful strategy to inform construction programmes to be more realistic, improving upon efficiency and waste reduction. }, author_keywords={Flow, process, waste, location-based management (LBM), work in progress/process (WIP). }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Musa2024, author={Musa, Muktari M. and Daniel, Emmanuel I. and Ahmed, Namadi S. and Enedah, Ifeatu C. and Job, Momoh and Haa, Samuel I. }, editor={ }, title={Exploring User Experience and Effectiveness of an Innovative Leanbuild UK Project Management Software: Usability Study Post Development Stage}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={672-683}, url={http://www.iglc.net/papers/details/2222}, doi={10.24928/2024/0138}, affiliation={MD/CEO, LeanBuild Limited, UK muktari@leanbuild.co.uk, macclimited@yahoo.com, orcid.org/0000-0002-9650-3125 ; Senior Lecturer in Construction Management, School of Architecture and Built Environment, Faculty of Science and Engineering., University of Wolverhampton, Wolverhampton, UK, e.daniel2@wlv.ac.uk, orcid.org/0000-0002-5675-1845 ; Lecturer, School of Engineering and the Environment, Department of Civil Engineering, Surveying and Construction Management, Kingston University: London, Greater London, GB. s.ahmed@kingston.ac.uk, orcid.org/0000-0002-3815-0683 ; Lead Program Manager, LeanBuild Limited, UK ifeatu@leanbuild.co.uk, orcid.org/0000-0002-3101-9658 ; Lecturer, School of Engineering and Architecture, Department of Construction, Property, and Surveying,, London South Bank University, UK momohj@lsbu.ac.uk, orcid.org/0000-0001-9103-8933 ; Program Manager, LeanBuild Limited, UK haasamuel@leanbuild.co.uk, samhaa19@gmail.com, orcid.org/0000-0001-7910-0714 }, abstract={This paper explores the usability and efficiency of the LeanBuild project management software; an innovative solution rooted in Lean Construction 4.0 principles. Through collaboration with the University of Wolverhampton UK, Kingston University UK, and London South Bank University UK, the LeanBuild Limited project presents a promising innovation in the construction industry. The integration of usability evaluations and user recommendations in software development is limited, despite the importance of usability testing. Even with limited adoption of construction project management software, Target Value Delivery principles are often overlooked. The study employs a mixed-methods approach, incorporating focus groups, questionnaires, and interviews to assess the software's usability. Recommendations gathered from industry practitioners, academics, and IT professionals emphasize the need for improvements such as financial reporting, critical path display, resource assignment features, simultaneous file uploads, BIM integration, enhanced security, and E-Tendering and Marketplace integration. The paper concludes that despite requiring further enhancements from its minimum viable product, LeanBuild is an effective solution, endorsed by users as a viable and scalable innovation with global applicability for efficient project delivery. This study highlights the importance of post-development usability checks and positions LeanBuild as a significant breakthrough in the construction software landscape. }, author_keywords={Lean construction, Digital Innovation, Project management, Software Usability test, Target Value Delivery }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Assaf2024, author={Assaf, Mohamed and Hedges, Otto and Mao, Zeyu and Golabchi, Hamidreza and Li, Xinming and Gonzalez, Vicente A. and Hamzeh, Farook }, editor={ }, title={A BIM-Lean Approach to Implement Lean Principles in Offsite Construction Projects: A Cable-Stayed Bridge Case Study}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={684-696}, url={http://www.iglc.net/papers/details/2223}, doi={10.24928/2024/0146}, affiliation={P.h.D Student, Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Canada, massaf2@alberta.ca ; P.h.D Student, Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Canada, ohedges@ualberta.ca ; P.h.D Student, Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Canada, zmao5@ualberta.ca ; P.h.D Student, Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Canada, hm7@ualberta.ca ; Assistant Professor, Department of Mechanical Engineering, University of Alberta, Edmonton, Canada, xinming.li@ualberta.ca ; Professor and Tier 1 Canada Research Chair in Digital Lean Construction, Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Canada, vagonzal@ualberta.ca ; Professor, Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Canada, hamzeh@ualberta.ca }, abstract={Recently, the attention to offsite construction (OSC) has grown due to its potential for waste minimization, higher quality, and speedy construction. However, OSC projects are sometimes adopted at a slow pace due to inefficient workflow. Further, OSC adoption requires a high level of information sharing to integrate the manufacturing of components, onsite assembly, and logistics processes. Previous research on the integration of Lean principles with advanced technologies, i.e., BIM and blockchain, in OSC was limited to improving the onsite operations only. To this end, this research aims to bridge this gap by providing a BIM-blockchain system to apply lean principles in enhancing the workflow of the OSC projects considering offsite, onsite, and logistics operations. Lean principles, namely Kaizen, Heijunka, Just-in-Time, One-piece flow, and Poke a yoke, form the focus of this study. Further, the study presents a secure information-sharing system based on blockchain technology to update the status of the process, i.e., pulling material from the inventory. A case study is introduced to validate the developed system. The proposed system is expected to improve the efficiency of the OSC operations and enhance the integration of stakeholders. }, author_keywords={Lean Construction, Offsite Construction, BIM, Smart Contract, Blockchain. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Bazán Montalto2024, author={Bazán Montalto, Alvaro Daniel and Vidal Quincot, Jose Francisco and Del Savio, Alexandre Almeida }, editor={ }, title={An Integrated Facility Management System Supported in Vdc and Lean}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={697-706}, url={http://www.iglc.net/papers/details/2224}, doi={10.24928/2024/0158}, affiliation={BSc in Civil Engineering, Civil Engineering Department, Universidad de Lima, Lima, Peru, alvbazanm@gmail.com, https://orcid.org/0000-0003-2520-8767 ; BSc in Civil Engineering, Civil Engineering Department, Universidad de Lima, Lima, Peru, josevidalquincot@gmail.com, https://orcid.org/0000-0001-8036-7643 ; Full Professor, Civil Engineering Department, Universidad de Lima, Lima 15023, Peru, delsavio@gmail.com, https://orcid.org/0000-0002-6067-6606 }, abstract={The operational costs during the maintenance phase can account for 15% to 70% of a facility's total life cycle expenses, depending upon the type and size of the project. This paper explores the integration of Virtual Design and Construction (VDC) and Lean methodologies, offering practical solutions to optimize the maintenance operations of an engineering laboratory. A comprehensive literature review was conducted to identify common challenges in facility management and assess existing methods and technologies to address these issues. This research introduces the concepts of VDC and Lean within maintenance management, proposing an Integrated Facility Management System (IFMS) that applies these frameworks to the operations and maintenance (O&M) processes. The IFMS aims to harmonize the facility's physical structure, organizational dynamics, and procedural workflows, providing a practical roadmap for facility managers and maintenance professionals. Implemented in an engineering laboratory in Lima, Peru, the IFMS has significantly improved maintenance efficiency. The results include a fivefold reduction in the average time required for corrective maintenance and a 50% decrease in the incidence of such maintenance tasks. Finally, applying VDC and Lean principles to the maintenance phase can yield substantial operational benefits, as evidenced by the data from the implemented IFMS. }, author_keywords={Facility Management, VDC, Lean, Value stream, Integrated Project Delivery (IPD), BIM. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Erazo-Rondinel2024, author={Erazo-Rondinel, Andrews A. and Melgar-Morales, Mauricio A. and Abregu-Gonzales, Josep J. and Napa-Almeyda, Juan A. and Lipa-Mamani, Diego S. }, editor={ }, title={Can ChatGPT Help With the Last Planner® System Implementation? An Expert Overview}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={707-718}, url={http://www.iglc.net/papers/details/2225}, doi={10.24928/2024/0160}, affiliation={Teaching Assistant, Professional School of Civil Engineering, Universidad Continental, Huancayo, Peru, aerazo@continental.edu.pe, orcid.org/0000-0002-5639-573X ; Student Researcher, Faculty of Civil Engineering, Universidad Nacional de Ingeniería, Lima, Peru, mauricio.melgar.m@uni.pe , orcid.org/0009-0007-6491-4134 ; Student Researcher, Faculty of Civil Engineering, Universidad Nacional de Ingeniería, Lima, Peru, josep.abregu.g@uni.pe , orcid.org/0009-0003-5663-0474 ; Student Researcher, Faculty of Civil Engineering, Universidad Nacional de Ingeniería, Lima, Peru, juan.napa.a@uni.pe , orcid.org/0009-0008-5475-957X ; Student Researcher, Faculty of Civil Engineering, Universidad Nacional de Ingeniería, Lima, Peru, diego.lipa.m@uni.pe , orcid.org/0009-0009-8695-2654 }, abstract={In recent years, the construction sector has been influenced by different technologies, which has given way to construction 4.0. One of the elements of Construction 4.0 is the use of artificial intelligence, and in recent years, chatbots have become popular in different industries, including construction. However, the literature on how chatbots can help in construction projects is limited. In this sense, the following article aims to study the degree of reliability presented by a chatbot (ChatGPT) to improve the implementation of the Last Planner® System (LPS). This article begins with a literary review of LPS barriers. From this, 13 main barriers are validated with the help of 10 expert judgments. After that, ChatGPT 3.5 is interacted with to provide possible solutions to the barriers found, which are validated again with eight expert judgments. The results show that 68.27% of ChatGPT responses are “Totally agree” and “Somewhat agree.” The following article will contribute to professionals in the construction sector so that they can evaluate the reliability of chatbots and explore their applications to solve LPS implementation problems and other problems in construction projects. }, author_keywords={Last Planner, Artificial Intelligence, ChatGPT, construction 4.0, lean construction. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Mardiansyah2024, author={Mardiansyah, and F., Agung and Saputra, Rizky A. and Sentosa, Gregorius A. and Widyastuti, Amy R. and Wresniwira, Sastria and Naufal, Achmad Luthfi and Kusuma, Juniar R. }, editor={ }, title={Digital Monitoring for Lean Construction: Efficiency in Major Indonesian Toll Road Project}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={719-730}, url={http://www.iglc.net/papers/details/2226}, doi={10.24928/2024/0164}, affiliation={Executive Vice President Human Capital, PT. Hutama Karya (Persero), Jakarta, Indonesia, mardiansyah@hutamakarya.com, orcid.org/0009-0005-4050-5542 ; Operational Director 1, PT. Hutama Karya (Persero), Jakarta, Indonesia, agung.fajarwanto@hutamakarya.com ; Senior Vice President General Civil, PT. Hutama Karya (Persero), Jakarta, Indonesia, rizky.agung@hutamakarya.com, orcid.org/0009-0000-4174-8945 ; Executive Vice President System, IT, and Research Technology, PT. Hutama Karya (Persero), Jakarta, Indonesia, aji.sentosa@hutamakarya.com, orcid.org/0009-0001-5801-6262 ; Vice President System, IT, and Research Technology, PT. Hutama Karya (Persero), Jakarta, Indonesia, amy.rachmadhani@hutamakarya.com, orcid.org/0009-0006-7600-6064 ; Analyst, System, IT, and Research Technology, PT. Hutama Karya (Persero), Jakarta, Indonesia, sastria.wresniwira@hutamakarya.com, orcid.org/0009-0007-5137-7253 ; Officer, System, IT, and Research Technology, PT. Hutama Karya (Persero), Jakarta, Indonesia, achmad.luthfi@hutamakarya.com, orcid.org/0009-0002-3464-7673 ; Bachelor of Civil Engineering Student, Department of Civil Engineering, Faculty of Engineering, Brawijaya University, Malang, Indonesia, juniarrevanska@gmail.com, orcid.org/0009-0009-1810-0214 }, abstract={The Karangjoang-Kariangau Section 3A Toll Road Project in East Kalimantan, Indonesia, aims to connect Balikpapan City with Nusantara, the New Capital City. This 13.4 km project, primarily involving intensive earthwork, utilizes heavy equipment whose efficiency is crucial for enhancing productivity and reducing costs. Our study examines inefficiencies such as unnecessary equipment motion, transportation delays, and extended waiting times—common challenges in lean construction. We implemented a digital monitoring system to compare its effectiveness against traditional manual methods in improving resource utilization and minimizing waste. Findings indicate that digital monitoring, despite the higher initial costs, significantly helps to boost operational efficiency by providing detailed data, then the data can be used to analyze the core of the problem so that a solution is found that successfully reduces idle time by 37% and increasing equipment utilization by 39%. These results demonstrate the substantial benefits of integrating digital technologies into construction management, suggesting a crucial shift towards digital methods to meet the demands of modern infrastructure development effectively. This study underlines the alignment of digital monitoring with lean construction principles, advocating for its adoption to optimize productivity and cost-efficiency in large-scale projects. }, author_keywords={Lean construction, waste, digital monitoring, continuous improvement }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Qureshi2024, author={Qureshi, Mehwish and Feng, Zhenan and Kumar, Vishal and Lovreglio, Ruggiero and Abdelmegid, Mohammed }, editor={ }, title={A Review of the Role of Digital Twin Applications for Water Sustainability}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={731-742}, url={http://www.iglc.net/papers/details/2227}, doi={10.24928/2024/0185}, affiliation={School of Built Environment, Massey University, Auckland, New Zealand, m.qureshi@massey.ac.nz, orcid.org/0009-0005-4769-0218 ; School of Built Environment, Massey University, Auckland, New Zealand, z.feng1@massey.ac.nz, orcid.org/0000-0001-7513-8942 ; School of Built Environment, Massey University, Auckland, New Zealand, v.kumar1@massey.ac.nz orcid.org/0000-0001-7348-7057 ; School of Built Environment, Massey University, Auckland, New Zealand, r.lovreglio@massey.ac.nz), orcid.org/0000-0003-4596-7656 ; School of Civil Engineering, Engineering Management, University of Leeds, West Yorkshire LS29JT, United Kingdom, m.abdelmegid@leeds.ac.uk, orcid.org/0000-0001-6205-570X }, abstract={This paper investigates the convergence of Digital Twin (DT) applications, Lean Construction (LC) principles, and water sustainability. The DT concept, which originated in the 2000s, has gained momentum across various industries. Yet, integrating DT into the construction industry, particularly in water systems, is at an early stage. A comprehensive literature review is conducted to explore the potential benefits of DT in water management, aligning with the principles of LC. The exploration reveals the integration of DT into diverse water systems, encompassing distribution networks, sewage systems, river and lake management, dam systems, and wastewater treatment plants. The identified benefits extend beyond operational efficiency to water sustainability, addressing climate change adaptation, disaster risk reduction, and resource optimization. The study also explores the tools and technologies employed in DT applications, emphasizing their alignment with LC principles of reducing waste and fostering collaboration. Nevertheless, limitations exist in the identified tools and technologies, such as data interoperability, computational complexities, and data reliability, underscoring areas for future research to enhance DT application effectiveness. Despite these limitations, the synthesis of DT, LC, and water sustainability holds promise for transforming water resource management. This study offers guidance on achieving efficient, sustainable, and collaborative water management across various contexts. It provides essential insights for scholars, practitioners, and policymakers, emphasizing the importance of policy support and technological innovation to overcome current challenges. Furthermore, it suggests avenues for future research to evaluate the long-term effects and enhance the effectiveness of DT systems. }, author_keywords={Digital Twin, Water Management, Water Sustainability, Lean Construction }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Bidhendi2024, author={Bidhendi, Ali and Poshdar, Mani and Nahri, Zahra and Won, Ji Won and Owais, Omar A and Koohestani, Kayvan }, editor={ }, title={Enhancing Lean Construction Through Innovative Technology: A Focus on Virtual Reality in Construction}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={743-754}, url={http://www.iglc.net/papers/details/2228}, doi={10.24928/2024/0187}, affiliation={Department of Built Environment Engineering, School of Future Environments, Auckland University of Technology (AUT), New Zealand. ali.bidhendi@autuni.ac.nz, orcid.org/0000-0002-8285-5859 ; Department of Built Environment Engineering, School of Future Environments, Auckland University of Technology (AUT), New Zealand. mani.poshdar@aut.ac.nz, orcid.org/0000-0001-9132-2985 ; Department of Architecture, Faculty of Art, Tarbiat Modares University (TMU), Iran. zahra.nahri@modares.ac.ir, orcid.org/0009-0005-3413-5354 ; Department of Built Environment Engineering, School of Future Environments, Auckland University of Technology (AUT), New Zealand. yulianajiwonwon@gmail.com, orcid.org/0009-0007-2093-2357 ; Department of Built Environment Engineering, School of Future Environments, Auckland University of Technology (AUT), New Zealand. omar.owais@aut.ac.nz, orcid.org/0000-0002-0788-3008 ; Department of Built Environment Engineering, School of Future Environments, Auckland University of Technology (AUT), New Zealand. kayvan.koohestani@autuni.ac.nz, orcid.org/ 0000- 0002-9988-3688 }, abstract={This study delineates the integration of Virtual Reality (VR) within Lean Construction, emphasising its application across the philosophy, principles, methods, and tools of Lean Construction. By conducting a systematic literature review, this research considers the utilisation of VR to enhance construction processes, specifically focusing on its role in mitigating waste, maximising value, continuous improvement, and respect for people. The investigation reveals VR's capacity to bridge the theoretical and practical aspects of Lean Construction, offering a novel perspective on its implementation. The results demonstrate VR's potential in advancing Lean Construction practices through its philosophy, principles, methods, and tools. Also, the utilisation of VR, particularly in SCRUM, Set Based Design and Visual Management, underlines a transformative potential for enhancing construction project efficiency and value. The paper concludes by highlighting the contributions of VR to Lean Construction, proposing actionable insights for practitioners and suggesting avenues for future research. This approach provides a comprehensive review for integrating VR in construction projects, aligning with Lean Construction for enhanced project outcomes }, author_keywords={Lean Construction, Set Based Design (SBD), VDC, Virtual Reality (VR), Smart Construction. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Prado Lujan2024, author={Prado Lujan, Guillermo and Murguia, Danny }, editor={ }, title={BIM as an Enabler of Lean Construction in the Public Sector}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={755-766}, url={http://www.iglc.net/papers/details/2229}, doi={10.24928/2024/0205}, affiliation={University Lecturer, Construction Management & Technology Research Group (GETEC), Pontifical Catholic University of Peru, guillermo.prado@pucp.edu.pe, orcid.org/0000-0002-5325-1132 ; Assistant Professor, Construction Management & Technology Research Group (GETEC), Pontifical Catholic University of Peru, dmurguia@pucp.pe, orcid.org/0000-0003-1009-4058 }, abstract={Several governments are mandating Building Information Modeling (BIM) for public construction worldwide. While this top-down approach can be effective in some contexts, the lack of a lean construction perspective within BIM project delivery might hinder the expected outcomes. This paper aims to unpack the interplay between lean principles and BIM adoption that support formal and informal lean construction implementation in the design phase of public construction projects. The study focuses on a Latin American country subject to a current BIM mandate. Qualitative data was collected through semi-structured interviews with senior public sector practitioners. The findings reveal that the BIM practices informally align with lean principles, as there is no explicit emphasis on lean implementation within the BIM mandate framework. Drawing on these insights, the discussion compares these results with previous studies and suggests the inclusion of BIM as a facilitator of lean practices in the Lean in Public Sector (LIPS) agenda. The conclusion highlights the current opportunities for leveraging the BIM public policy trend towards lean implementation in public construction projects. }, author_keywords={Lean construction, BIM, lean-BIM synergy, lean in the public sector (LIPS), public policy. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Owais2024, author={Owais, Omar A. and Poshdar, Mani and Bidhendi, Ali and Jaafar, Kamal and Sarhan, Saad }, editor={ }, title={From Concept to Concrete: Digital Twins Enabling Different Levels of Lean Construction}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={767-779}, url={http://www.iglc.net/papers/details/2230}, doi={10.24928/2024/0206}, affiliation={Department of Built Environment Engineering, School of Future Environments, Auckland University of Technology, Auckland, New Zealand, omar.owais@aut.ac.nz, orcid.org/0000-0002-0788-3008 ; Department of Built Environment Engineering, School of Future Environments, Auckland University of Technology, Auckland, New Zealand, mani.poshdar@aut.ac.nz, orcid.org/0000-0001-9132-2985 ; Department of Built Environment Engineering, School of Future Environments, Auckland University of Technology, Auckland, New Zealand, ali.bidhendi@autuni.ac.nz, orcid.org/0000-0002-8285-5859 ; Faculty of Engineering and Information Sciences, University of Wollongong, Dubai, United Arab Emirates, KamalJaafar@uowdubai.ac.ae, orcid.org/0000-0001-9134-6215 ; School of Engineering, University of Birmingham Dubai, United Arab Emirates, s.sarhan@bham.ac.uk, orcid.org/0000-0002-0105-2350 }, abstract={The integration of Digital Twins (DTs) in Lean Construction (LC) represents a transformative approach to enhance collaboration, efficiency, waste reduction, and decision-making in construction projects. This paper explores the potential of DTs across different levels of LC through a comparative analysis method, aiming to establish a robust implementation foundation for lean organisations. Firstly, at the philosophy level, DTs foster collaboration, transparency, and respect for people by providing real-time data and virtual representations. They enable value maximisation, waste minimisation, and continuous improvement through visualisation, simulation, and data-driven decision-making. Besides, continuous improvement through monitoring and feedback loop. Secondly, at the principles level, DTs align closely with key LC principles such as value maximisation, continuous improvement, waste elimination, pull planning, continuous flow, and fast switch-over. By optimising processes, enhancing monitoring capabilities, and facilitating collaboration, DTs contribute to efficient project delivery. Thirdly, at the methods level, DTs complement LC methods such as Error Proofing, Value Stream Mapping, Target Value Design, and Last Planner System by facilitating real-time collaboration, visualising workflows, engaging stakeholders early, and providing error prevention capabilities. Overall, the strategic integration of DTs and LC thinking leads to improved project efficiency and value delivery, fostering ongoing innovation and improvement in the construction sector. }, author_keywords={Lean construction (LC), Digital Twin (DT), Philosophy, Principles, Methods. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Gao2024, author={Gao, Shang and Chan, Toong-Khuan and Hendy, Phil }, editor={ }, title={Digital Last Planner System Implementation: Critical Successful Factors}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={780-792}, url={http://www.iglc.net/papers/details/2231}, doi={10.24928/2024/0227}, affiliation={University of Melbourne, Australia, shang.gao@unimelb.edu.au, orcid.org/0000-0002-4161-5592 ; La Trobe University, toong-khuan.chan@latrobe.edu.au, orcid.org/0000-0002-1985-6592 ; McConnell Dowell, phil.hendy@wpalliance.com.au }, abstract={Last Planner System (LPS) is the most popular and most widely adopted lean construction (LC) practice in the LC community. The growing maturity of LPS software encourages the implementation of digital LPS in-lieu of traditional analogue methods. With the boom in infrastructure investment in Victoria, Australia, this study aims to explore the critical factors for implementing digital LPS on Australian infrastructure projects. The study undertaken on one of five program alliances established to carry out rail and road level crossing removal projects. Adopting a case study approach, qualitative data was collected from 19 participants from two projects (Projects A and B). The findings indicate that the critical factors that underscore the successful adoption of digital LPS falls under a combination of technology, people, and organisational aspects. This includes using a suitable digital LPS platform, having LPS champions, getting employees’ buy-in, putting organisational support in place, and many others. This study also confirmed the roles that people and organisations play in driving successful adoption of digital LPS. Given this, the implications for roles such as LPS champions at project level and supporting roles within organisations are discussed. Although these are unique contextual factors, it is anticipated that this success story of adopting digital LPS will }, author_keywords={Lean Construction, Digital Last Planer System, Australia, Infrastructure projects, Critical success factors }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Meléndez2024, author={Meléndez, Walter and Saavedra, Rodrigo and Garcés, Gonzalo }, editor={ }, title={Quantity Take-Off in Rough Construction of High-Rise Buildings Based on CAD and BIM Methodologies: A Case Study}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={793-806}, url={http://www.iglc.net/papers/details/2232}, doi={10.24928/2024/0236}, affiliation={Department of Civil Engineering, Universidad Andrés Bello, Chile, w.melndezbernardo@uandresbello.edu ; Department of Civil Engineering, Universidad Andrés Bello, Chile, r.saavedraortega@uandresbello.edu ; Faculty of Engineering, Universidad del Bío-Bío, Chile, gegarces@ubiobio.cl }, abstract={Building Information Modeling (BIM) prepares the quantity take-off (QTO) of the construction elements, helping in the management of the design and construction process and preparing the 3D visualization of the construction phases. BIM increases efficiency and gives users more control over construction-related tasks. This study identifies the New Cycle building as a Case Study, in which inconsistencies were detected in the QTO, compared to the real quantities of budgeted materials, so the interested parties decided to implement BIM in the use of QTO as a mechanism of control. The central question addressed was: If BIM had been implemented at the tender stage, could it have provided benefits to the project? To do this, various parameters were evaluated to conduct a comparative analysis between the results obtained through the use of the CAD and BIM methodology in the same project. Using the Analytical Hierarchy Process (AHP) method, it was possible to evaluate and compare the two alternatives, CAD and BIM, in order to determine which of them would have been more effective in satisfying the objectives set in the project. The results obtained offer a valuable and informed vision for making informed decisions for future construction projects, }, author_keywords={Building Information Modeling; quantity take-off; work flow; collaboration. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Chaudhari2024, author={Chaudhari, Himesh and Sarhan, Saad and Abdelmegid, Mohammed and Saad, Ali and Poshdar, Mani }, editor={ }, title={Promoting Health and Safety on UK Construction Sites Using Lean Construction Strategies}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={548-559}, url={http://www.iglc.net/papers/details/2233}, doi={10.24928/2024/0178}, affiliation={Site Engineer, Laing O’Rourke, Melbourne, Victoria, Australia, HChaudhari@laingorourke.com.au ; Programme Director and Assistant Professor in Advanced Engineering Management, Department of Civil Engineering, University of Birmingham Dubai, UAE, s.sarhan@bham.ac.uk, orcid.org/0000-0002-0105-2350 ; Lecturer in Engineering Management, School of Civil Engineering, University of Leeds, UK, M.Abdelmegid@leeds.ac.uk, orcid.org/0000-0001-6205-570X ; Lecturer in Construction Engineering and Project Management, School of Architecture Building & Civil Engineering, University of Loughborough, UK, a.saad@lboro.ac.uk, orcid.org/0000-0002-3413-4483 ; Programme Director and Senior lecturer, Auckland University of Technology, Built Environment Engineering, New Zealand, mani.poshdar@aut.ac.nz, orcid.org/0000-0001-9132-2985 }, abstract={Poor health and safety (H&S) conditions in the construction industry are linked to ill-defined social and economic factors. To mitigate poor construction H&S performance, it has been widely recommended that Lean Construction (LC) strategies be adopted. Existing literature shows a strong correlation between implementing LC and improving construction H&S performance. However, limited research utilises qualitative research based on primary data to understand the perspectives of experts with real-world experience on the LC/H&S relationship. To address this gap, we conducted a novel study interviewing eight highly experienced LC experts to gain insights into how LC can enhance H&S in construction projects. Going beyond theory, we conceptualised a model linking key LC methods to root causes of H&S accidents to enable tangible improvements. This model intends to guide construction professionals in adopting and implementing LC strategies to foster safer construction workplaces. Our findings affirm and extend prior research by emphasising the efficacy of LC methods in improving H&S performance in construction projects. }, author_keywords={Lean Construction, Health and Safety, Accidents, Waste, Flow }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Neyra2024, author={Neyra, Mauricio and Diaz, Michelle and Gomez, Sulyn }, editor={ }, title={An Exploratory Study on Visual Management and Process Transparency in Construction}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={560-571}, url={http://www.iglc.net/papers/details/2234}, doi={10.24928/2024/0200}, affiliation={Graduate Researcher, Faculty of Civil Engineering, National University of Engineering, Lima, Peru, mauricio.neyra.p@uni.pe, orcid.org/0009-0007-7379-5798 ; Student, Faculty of Environmental Engineering, National University of Engineering, Lima, Peru, mndiazv@uni.pe, orcid.org/0000-0002-7711-1695 ; Quality Leader, DPR Construction, Redwood City, USA, sulyng@dpr.com, orcid.org/0000-0003-2367-9880 }, abstract={Several managerial approaches have emerged to address current construction challenges. Among them, information management addresses construction hurdles through process transparency, a core function of Visual Management (VM). Research on VM in construction has focused on its theoretical development and practical implementation. Conversely, research on process transparency has focused on highlighting its significance for construction through transparency strategies. This study aims to extend the research on process transparency and VM by identifying their current applications, measuring their degree of implementation, and highlighting their impact on team performance in two case studies based on observational protocols in Peru. The main findings are: (1) Process transparency implementation was mainly driven by internal team efforts for job facilitation, while VM primarily served job facilitation, site signage and transparency functions, (2) One site had a higher degree of process transparency while the other had a slightly higher degree of VM, and (3) team performance improvement was associated with visual practices serving the functions of transparency and job facilitation. Some recommendations for the implementation of VM systems on construction sites and for future research were also presented. }, author_keywords={Lean Construction, information management, process transparency, Visual Management, team performance }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Gordon2024, author={Gordon, Elizabeth and Rawlinson, Keila and Dabhade, Neha and Reed, Dean }, editor={ }, title={Lean Reflection Practices and Organizational Knowledge Management: A General Contractor Case Study}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={572-582}, url={http://www.iglc.net/papers/details/2235}, doi={10.24928/2024/0201}, affiliation={Quality Leader, DPR Construction, San Francisco, CA 94111, USA, ElizabethG@dpr.com, orcid.org/0000-0001-8165-0459 ; Operations Business Analyst, DPR Construction, Denver, CO 80112, USA, KeilaR@dpr.com, orcid.org/0000-0001-9718-5483 ; Project Engineer, vConsruct Private Limited, Pune, MH 411028, India, nehad@vconstruct.in, orcid.org/0000-0002-6453-6096 ; Owner and Consultant, Capability-Building, Santa Cruz, CA USA, Dean@deansreed.com, orcid.org/0000-0002-2916-8558 }, abstract={This paper is the sixth in a series discussing the transition of a self-performing general contractor (GC) towards early systems of measurable collaboration to achieve more reliable outcomes. This approach, known as a Systems Approach to Quality (SAQ), enhanced project performance and team culture. This paper investigates the impact of the Monday Quality Calls (MQC) initiated by the Quality Leadership Team (QLT) in 2015 as a forum for reflection, learning, and collaborative tacit knowledge sharing to build SAQ competencies and support organizational change efforts. The research aims to understand the characteristics of the MQC portfolio, evaluate the influence of the QLT, and assess trends in content development over seven years. Findings reveal the MQC's representation of the GC's work and highlight opportunities to enhance geographic and role diversity in participation to support further organizational efforts. Moreover, the paper underscores the value of the MQC as a multi-modal knowledge-sharing platform, facilitating team coaching, onboarding, and refining organizational strategies and processes. The study proposes future research and advocates for similar metrics tracking and knowledge-sharing initiatives in the industry. Ultimately, this paper contributes to refining organizational approaches to quality management and fostering collaborative learning in the Architecture Engineering Construction industry. }, author_keywords={Systems Approach to Quality (SAQ), Knowledge Management, Capability-building, Organizational Change, Action Learning Research }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Lappalainen2024, author={Lappalainen, Eelon and Hänninen, Aku and Seppänen, Olli and Uusitalo, Petri and Heiskanen, Timo }, editor={ }, title={Whose Game Is It? Do Small and Medium Size Enterprises Win Alliance Contracts?}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={583-596}, url={http://www.iglc.net/papers/details/2236}, doi={10.24928/2024/0100}, affiliation={Doctoral Candidate, Department of Civil Engineering, Aalto University, Finland, eelon.lappalainen@aalto.fi, orcid.org/0000-0002-7573-344X ; Master of Science, Ideastructura Ltd., Finland, aku.hanninen@ideastructura.com, orcid.org/0000-0001-9451-2725 ; Associate Professor, Department of Civil Engineering, Aalto University, Finland, olli.seppanen@aalto.fi, orcid.org/0000-0002-2008-5924 ; Postdoctoral Researcher, Department of Civil Engineering, Aalto University, Finland, petri.uusitalo@aalto.fi, orcid.org/0000-0002-5725-906X ; Master of Science, Diamond Consulting Ltd., Finland, timo.heiskanen@diamondconsulting.fi }, abstract={This empirical archival study investigates the distribution of alliance contracts (ACs) between small and medium-sized enterprises (SMEs) and large enterprises (LEs). Previous research has identified concerns about ACs in relation to the participation of SMEs in public procurement markets in the construction sector. The aim of this study was to understand how these contracts are distributed in the construction sector and to provide additional information for industry players on ACs. The study analyzed 80 investment alliance projects from 2011 to 2023, demonstrating a decreasing trend in SME participation against an increase in LE involvement. The findings revealed a concentration of ACs among a few LEs, with a significant portion of SMEs not participating in these alliances. While 81 SMEs have engaged in Finnish ACs, this number is small compared to the total number of SMEs in the industry, pointing to an imbalanced contract distribution favoring LEs. The study also noted a steady rise in the relative share of alliances in the overall construction market. This research sheds light on the challenges of asymmetric AC distribution and offers valuable insights for public works procurement bodies, industry consultants, and AC participants and researchers, highlighting the need for balanced contract allocation. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Lello2024, author={Lello, Didas S. and Emuze, Fidelis A. }, editor={ }, title={Reconceptualizing a Model for Lean Construction Supply Chain}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={597-608}, url={http://www.iglc.net/papers/details/2237}, doi={10.24928/2024/0119}, affiliation={PhD Candidate, Department of Construction Management, Nelson Mandela University, Gqeberha, South Africa, Email: lellos2@yahoo.co.uk or didas.lello@aru.ac.tz, ORCID.org/ 0000-0001-6523-5466 ; Professor, Department of Built Environment, Central University of Technology, Free State, Private Bag X20539, Bloemfontein, 9301, South Africa, Tel: (051) 507 3089, Email: femuze@cut.ac.za. ORCID.org/0000-0001-7714-4457 }, abstract={The inefficiency of construction projects in Tanzania made popular cost overruns, extensive delays, reworks, defects and accidents, including resource waste within the construction supply chain. Although scholars have proposed diverse ways to combat supply chain problems, these efforts lack an integrated lean construction supply chain (LCSC) model. Given the persistent resource constraints characterizing the construction industry, this study reconceptualizes an LCSC model for deployment to drive out waste. A critical review of relevant literature was conducted to identify which lean supply chain model predominates in construction in order to develop an LCSC model that integrates lean construction tools and supply chain strategies that were found to proffer better solutions. The paper offers novel theoretical insights that lay a foundation for subsequent empirical and practical implications for LCSC efficiency. }, author_keywords={Construction, Lean, Supply Chain, Model, Project }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Kemmer2024, author={Kemmer, Sergio and Marin, Leonardo L. }, editor={ }, title={Implementing Lean Practices and a Modern Construction Method in a Social Housing Project}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={807-818}, url={http://www.iglc.net/papers/details/2238}, doi={10.24928/2024/0127}, affiliation={Managing Director, SK Lean Consultancy & Training Services, Manchester - UK, contato@sergiokemmer.com, orcid.org/0000-0002-0803-2096 ; Production Planning and Control Coordinator, leonardolelinski@gmail.com, orcid.org/0009-0003-2944-5062 }, abstract={The paper aims to explore the implementation challenges and advantages of utilising lean practices along with a modern construction method, i.e. timber frame prefabricated system, to accomplish a challenging goal in a social housing project in Brazil. It presents a case study on the construction of 518 housing units, which were built in a short period to help victims of a climate catastrophe relocate. Data was collected through semi-structured interviews, participant observation, site visits, and documental analysis. The findings suggest that relying on a single lean practice or a modern construction method may not be enough to achieve demanding project objectives, such as completing a construction project within a tight deadline. Instead, it is the appropriate combination of these initiatives that will result in a better outcome. Moreover, the study contributes to a particular issue that has not been adequately addressed by the lean community. Specifically, it sheds light on the connection between a project objective, lean concepts and managerial tools that can be used to accomplish it. }, author_keywords={Lean practices, Last Planner® System, off-site construction, prefabrication, prototype. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Mourmourakis2024, author={Mourmourakis, Jaeden and Shou, Wenchi and Wang, Jun and Bai, Yu }, editor={ }, title={Analysing the Alignment Between Lean Construction and Circular Economy in Prefabricated Construction}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={819-830}, url={http://www.iglc.net/papers/details/2239}, doi={10.24928/2024/0128}, affiliation={Undergraduate student, School of Engineering Design and Built Environment, Western Sydney University, Sydney, Australia, 20231545@student.westernsydney.edu.au ; Senior Lecturer, School of Engineering Design and Built Environment, Western Sydney University, Sydney, Australia, w.shou@westernsydney.edu.au , https://orcid.org/0000-0001-8724-8807 ; Senior Lecturer, School of Engineering Design and Built Environment, Western Sydney University, Sydney, Australia, jun.wang@westernsydney.edu.au , https://orcid.org/0000-0003-3384-4050 ; Professor, Department of Civil Engineering, Faculty of Engineering, Monash University, Melbourne, Australia, yu.bai@monash.edu , https://orcid.org/0000-0002-0742-0708 }, abstract={With the recurring challenge of resources scarcity in the world, the construction industry needs to shift its attention towards sustainable practices. Prefabricated construction (PC) or modular construction has become increasingly popular in recent with its potential solution for the challenges faced, through increase of efficiency and reduction of waste. Some researchers have explored the integration of lean construction (LE) and circular economy (CE) into PC projects and highlights the benefits. However, they conclude that the implementation is in its early days and require a need for research as it holds significant potential in transition into a sustainable industry. This paper aims to exploring the alignment between CE and LC in PC through relevant resources to understand the full extent on this topic. The paper presents the research findings of 25 relevant publications that met the inclusion criteria in a statistical manner. This is to identify and summarise the known body of knowledge relevant to the topic. It shows that there is a strong link between focusing on the whole process for design, construction, and end-of-life of a building. Content was examined to discover what type and application of PC and relevant benefits and/or limitations. }, author_keywords={Lean construction, circular economy, prefabricated construction, alignment, review. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Silva2024, author={Silva, Marcos Henrique Bueno da and Muianga, Elisa Atália Daniel and Oliveira, Kaio Pimentel Rego de and Granja, Ariovaldo Denis }, editor={ }, title={Insertion of Modular Construction Aligned With Lean Principles: A Conceptual Map Model}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={831-844}, url={http://www.iglc.net/papers/details/2240}, doi={10.24928/2024/0136}, affiliation={Researcher - Construction Management Research Laboratory - Lagercon - Universidade Estadual de Campinas - UNICAMP, Brazil, marcoshbs25@gmail.com, https://orcid.org/0000-0002-7134-1270 ; Researcher - Construction Management Research Laboratory - Lagercon - Universidade Estadual de Campinas - UNICAMP, Brazil, elisa.atalia@gmail.com, https://orcid.org/0000-0002-7070-3903 ; Researcher - Construction Management Research Laboratory - Lagercon - Universidade Estadual de Campinas - UNICAMP, Brazil, kaiopimentel1@gmail.com, https://orcid.org/0000-0002-7917-8033 ; Associate Professor - Construction Management Research Laboratory - Lagercon - Universidade Estadual de Campinas - UNICAMP, Brazil, adgranja@m.unicamp.br, https://orcid.org/0000-0002-2964-5609 }, abstract={The construction industry presents increasing levels of competitiveness among sectors, increasingly demanding products with higher value-added and sustainability. However, problems such as: production capacity, product quality, meeting deadlines, cost control and low productivity are always in evidence for this industry. Therefore, this work aims to present strategies for inserting modular construction in projects in the housing sector. This constructive method allows the application of innovations, increased productivity, control of costs and deadlines, products with greater added value, as well as the development of lean principles in the sector. Due to the complexity involved in the theme and the limited academic development and market for the application of this construction method, this work presents a conceptual map with strategies for inserting modular construction, offering a synthetic vision for companies in the sector that wish to follow the path of modular construction can better understand the main opportunities, barriers, risks and strategies. Market externalities and alignment with lean principles are also presented. For this purpose, the Design Science Research methodological approach was used. }, author_keywords={Conceptual Map Model, Modular Construction, Lean Construction, Real Estate. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Zieth2024, author={Zieth, Peter and Rocha, Cecilia Gravina da }, editor={ }, title={Defining Interfaces to Facilitate Building Module Change}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={845-856}, url={http://www.iglc.net/papers/details/2241}, doi={10.24928/2024/0137}, affiliation={PhD Student, School of Civil Engineering and Environmental Engineering, University of Technology Sydney (UTS), City Campus, Broadway, Bldg 11, Lv 11, NSW 2007, Australia, peter.zieth@student.uts.edu.au, orcid.org/0009-0008-9546-2895 ; Senior Lecturer, School of Civil Engineering and Environmental Engineering, University of Technology Sydney (UTS), City Campus, Broadway, Bldg 11, Lv 11, NSW 2007, Australia, cecilia.rocha@uts.edu.au, orcid.org/0000-0002-2649-2432 }, abstract={Modular construction in the building industry remains largely misunderstood, despite numerous studies on the subject. With confusion around what constitutes a module, how it is defined and differentiated from other modules, and how they interface. This study examines interface characteristics; types, standardization, and reversibility (three measurable categories based on Fixson (2005) function-component allocation (FCA) tool for product architecture assessments) and assesses product architecture interfaces to apply them to building product architecture. The intent of this examination is to understand the interface’s role in any transfer of module functions across modules. Defining interfaces to better differentiate building modules from each other should ultimately facilitate the identification of what specific functions of the building component modules that need to be designed, manufactured, assembled, changed, and disassembled. From the examination, the discussion arising seeks to advance on how a building spatial module function designation might transfer functions at an interface, to provide clarity on the functional requirements for component modules to meet. }, author_keywords={Modular construction, prefabrication, flexible manufacturing, interfaces. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Valkonen2024, author={Valkonen, Tuomas and Alhava, Otto and Viitanen, Jaakko and Seppänen, Olli }, editor={ }, title={Why Do Some Prefabricate MEP While Others Do Not?}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={857-868}, url={http://www.iglc.net/papers/details/2242}, doi={10.24928/2024/0145}, affiliation={Doctoral Candidate, Department of Civil Engineering, Aalto University, Espoo, Finland, tuomas.valkonen@aalto.fi, https://orcid.org/0000-0002-2710-5190 ; CTO, Fira Group Oy, Vantaa, Finland, otto.alhava@fira.fi, orcid.org/0000-0001-8820-0522 ; CTO, Fira Palvelut Oy, Vantaa, Finland, jaakko.viitanen@fira.fi, orcid.org/0009-0006-7343-2797 ; Associate Professor, Department of Civil Engineering, Aalto University, Espoo, Finland, olli.seppanen@aalto.fi, http://orcid.org/0000-0002-2008-5924 }, abstract={Prefabrication of mechanical, electrical, and plumbing (MEP) systems seems to be an obvious choice to some, while others are struggling to reach the same conclusions. Most of the literature is focused on benefits, implying prefabrication is an obvious choice. To understand reasons why different conclusions are reached, we studied two cases where one decided against, and one decided to use MEP prefabrication. While some reasons can be contributed to differences in project type, there are general conclusions to be drawn. Reluctancy to use prefabrication seems to correlate to first time experience of prefabrication, namely overestimation of direct costs, and underestimation of indirect benefits (obstacles). Moreover, in the second case, prefabrication was used as a tool to enable lean practices such as short takt time, low amount of waste, levelled production, and efficient flow of materials. The key difference between the two cases is, Case 2 uses prefabrication to reach a valued goal while Case 1 evaluated its utility without a real problem that could be solved by prefabricating. Based on the two studied cases prefabrication becomes a more attractive alternative when it is used as part of a systemic change to achieve a valued goal. }, author_keywords={Prefabrication, Choosing by Advantages (CBA), Lean construction. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Vásquez-Hernández2024, author={Vásquez-Hernández, Alejandro and Alarcón, Luis Fernando and Pellicer, Eugenio }, editor={ }, title={Business Models Emerging From Industrialized Construction Adoption}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={869-880}, url={http://www.iglc.net/papers/details/2243}, doi={10.24928/2024/0184}, affiliation={PhD Student, Department of Construction Engineering and Management, Pontificia Universidad Católica de Chile, Santiago, Chile, and School of Civil Engineering, Universitat Politècnica de València, Valencia, Spain. Assistant Professor, School of Applied Sciences and Engineering, Universidad EAFIT, Medellín, Colombia, avasquez5@uc.cl, orcid.org/0000-0002-1073-4038 ; Professor, Department of Construction Engineering and Management, Pontificia Universidad Católica de Chile, Santiago, Chile, lalarcon@ing.puc.cl, orcid.org/0000-0002-9277-2272 ; Professor, School of Civil Engineering, Universitat Politècnica de València, Valencia, Spain, pellicer@upv.es, https://orcid.org/0000-0001-9100-0644 }, abstract={Industrialized Construction (IC) has been recognized as a promising approach to improving project performance. However, its benefits are not evident in the building as an entity. The background of IC reveals approaches limited to production methods, overlooking issues related to process, collaboration, supply chain, and market. IC represents a novel strategic approach for the construction sector, introducing a business logic distinct from that of project-based companies, which is timely to understand within the context of managing IC adoption. Business models (BMs) are constructs that can be employed as tools to describe and analyze such business logic. This article aims to identify in the literature the constructs proposed for analyzing BMs associated with IC adoption, their approaches, and business-configuring elements, and to identify the business models associated with cases reported in the literature. A systematic literature review and content analysis were conducted. The results revealed fourteen proposed BMs frameworks and two approaches to IC BMs. Furthermore, following the analysis of reported cases, thirteen BMs were identified, associated with seven groupings based on the roles and value chain clustering strategies linked to IC adoption. }, author_keywords={Industrialized construction, modular construction, off-site construction, business model. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Conte2024, author={Conte, Manoela and Tommelein, Iris D. and Formoso, Carlos Torres and Miller, Randall }, editor={ }, title={Mass Customized Products for Industrialized Construction: Challenges and Opportunities}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={881-893}, url={http://www.iglc.net/papers/details/2244}, doi={10.24928/2024/0195}, affiliation={PhD Candidate, Postgraduate Program in Civil Engineering: Construction and Infrastructure, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil, manooelac@gmail.com, orcid.org/0000-0002-1684-1563 ; Distinguished Professor, Civil and Environ. Engineering Department, Director, Project Production Systems Laboratory, Univ. of California, Berkeley, USA, tommelein@berkeley.edu, orcid.org/0000-0002-9941-6596 ; Professor, Building Innovation Research Unit (NORIE), Universidade Federal do Rio Grande do Sul (UFRGS). Porto Alegre, RS, Brazil, formoso@ufrgs.br, orcid.org/0000-0002-4772-3746 ; PhD Student, Civil and Environmental Engineering Department, Project Production Systems Laboratory, University of California, Berkeley, USA, randymiller@berkeley.edu, orcid.org/0009-0005-5277-6059 }, abstract={Developing mass customized products for industrialized construction (IC), including single- and multi-family modular housing, requires multidisciplinary, collaborative, and iterative approaches from the first stages of product development. Despite this, decisionmaking based on data pertaining to companies’ capabilities and increasing diversity of customers’ needs in IC is still in its infancy. Catalogs of houses are often extensive yet fail to take advantage of IC strategies (such as mass customization (MC), product platform, modularity, and product families), thereby undermining the competitiveness of IC against traditional construction. An opportunity exists to enhance communication among stakeholders, fostering decisions about catalog offerings based on clear understanding of their requirements, robust data analysis, and continuous improvement. This paper discusses practices, challenges, and opportunities related to the development of products and integration among stakeholders in the IC context. The research method comprised three steps: developing theoretical understanding, conducting two ongoing studies in Brazil and the United States, and leading a workshop with experts to identify practices, challenges, and opportunities regarding the development of IC products. The preliminary results indicated the imperative need for stakeholders to work together on improving product development and production system, fostering a more competitive IC industry. }, author_keywords={Mass customization, industrialized construction, modular construction, product development, collaboration. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Islam2024, author={Islam, Mohaimeen and Bunster, Victor and Couper, Rachel and Yazdi, Alireza Jalali and Maxwell, Duncan }, editor={ }, title={Process Modularity – a Lean Approach to Develop Industrialised Building Platforms}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={894-905}, url={http://www.iglc.net/papers/details/2245}, doi={10.24928/2024/0208}, affiliation={PhD Candidate, Future Building Initiative-MADA, Monash University, Australia, mohaimeen.islam@monash.edu, orcid.org/0000-0001-6322-6697 ; Lecturer, Department of Architecture, Associate Director, Future Building Initiative-MADA, Monash University, Australia, victor.bunster@monash.edu, orcid.org/0000-0002-7665-4567 ; Lecturer, Department of Architecture, Future Building Initiative-MADA, Monash University, Australia, rachel.couper@monash.edu, orcid.org/0000-0002-3762-7996 ; Postdoctoral Research Fellow, Future Building Initiative-MADA, Monash University, Australia, mani.jalaliyazdi@monash.edu, orcid.org/0000-0002-4419-9504 ; Director, Future Building Initiative-MADA, Monash University, and Research Program Lead, Building 4.0 CRC, Australia, duncan.maxwell@monash.edu, orcid.org/0000-0002-9039-1441 }, abstract={The concept of modularity within product platforms and lean thinking has drawn attention in recent years, to achieve a balance between standardisation and customisation in industrialised building (IB). Modularity plays an important role in IB, where companies use standardised modules on common platforms for product development. Although the application of product modularity is widely discussed in the literature, the concept of modularity is not fully explored as a mechanism for process development, aiding to improve cost efficiency, quality and coordination across the IB value chain. Previous research within lean construction emphasises the importance of modularity in both product and process dimensions. However, a lack of clear understanding has impeded the full adoption of process modularity in IB platforms. This paper examines the work processes of a Japanese case company to identify modular patterns in the technical systems for varied house production. By analysing qualitative data, the findings present potential advantages of modularity in the case company’s lean approach to standardise the design, production, assembly and logistics processes. The study contributes in presenting a concept of process modularity to support developing process platforms in IB. }, author_keywords={Process modularity, industrialised building, lean construction, platforms, technical system }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Onyenokporo2024, author={Onyenokporo, Nwakaego and Tzortzopoulos, Patricia and Biscaya, Sara and Collington, Nick and O'Connor, Shellie }, editor={ }, title={Net-Zero & Digitalisation in Off-Site Construction}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={906-917}, url={http://www.iglc.net/papers/details/2246}, doi={10.24928/2024/0213}, affiliation={Researcher, Department of Design and Built Environment, School of Arts and Humanities, University of Huddersfield, United Kingdom, n.onyenokporo@hud.ac.uk, https://orcid.org/0000-0003-3462-8878 ; Professor, Department of Design and Built Environment, School of Arts and Humanities, University of Huddersfield, United Kingdom, p.tzortzopoulos@hud.ac.uk, https://orcid.org/0000-0002-8740-6753 ; Reader, Department of Design and Built Environment, School of Arts and Humanities, University of Huddersfield, United Kingdom, s.biscaya@hud.ac.uk, https://orcid.org/0000-0003-4086-8552 ; Chief Technical Officer at Company A, United Kingdom ; Chief Operating Officer at Company A, United Kingdom }, abstract={The UK Government set targets to achieve net-zero buildings by 2050. Consequently, there is a need for off-site construction companies to achieve net-zero over the coming years. However, small and medium-sized enterprises in off-site construction face challenges in implementing net-zero, as well as in implementing digitalisation, which can greatly support achieving net-zero targets. This paper reports on initial findings of a project focused on improving digitalisation and net-zero within an SME off-site construction company. Through process mapping and observations, implementation barriers to digitalisation and net-zero were identified, and a set of actions are suggested. The paper also discusses tools for optimising the lifecycle carbon impact of buildings. The recommendations include accurate carbon footprint measurement, creating a realistic reduction strategy, and adopting sustainable/low-carbon materials. Additionally, the paper recommends the use of smart technology to monitor as-built and compare it with the as-designed building. }, author_keywords={Off-site construction; Net-zero; Lean construction; BIM. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Amaro2024, author={Amaro, Louise C. and Formoso, Carlos T. and Bulhões, Iamara R. and Soares, Alexandre }, editor={ }, title={Role of Collaboration in Production Planning and Control in the Context of Modular Construction}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={918-929}, url={http://www.iglc.net/papers/details/2247}, doi={10.24928/2024/0218}, affiliation={Ph.D. Student, Building Innovation Research Unit (NORIE), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil, louisechiarello@hotmail.com, orcid.org/0000-0002-3412-4584. ; Professor, Building Innovation Research Unit (NORIE), Universidade Federal do Rio Grande do Sul (UFRGS). Porto Alegre, RS, Brazil, formoso@ufrgs.br, orcid.org/0000-0002-4772-3746 ; Assistant Professor, Building Innovation Research Unit (NORIE), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil, iamara.bulhoes@ufrgs.br, orcid.org/0000-0002-1519-0455 ; CEO, Visia Construção Industrializada, Brazil, alexandre@visia.eng.br. }, abstract={Modular construction projects have complexity attributes that differ from conventional projects. To address this complexity, collaboration within production units and between different units is essential, as it contributes to resilient performance. The aim of the investigation is to understand the role of collaboration in the implementation of production planning and control (PP&C) in modular construction projects, considering complexity attributes. A case study was conducted at a Brazilian modular construction company. The unit of analysis was the PP&C system developed in this company for managing construction site installations, strongly based on the Last Planner System. As a result, a list of collaborative processes for planning and controlling modular construction projects was presented. Each process was thoroughly evaluated across six categories of collaboration factors: behavior, communication, team, management, technology, and contractual aspects. Collaborative processes related to meetings addressed the highest number of collaboration categories, suggesting that these are the most collaborative processes. In a high-complexity project, as it is typical of this modular construction company, addressing the highest number of collaboration factors contributes to alignment between sectors and achieving project objectives. }, author_keywords={Lean construction, Production Planning and Control, Modular Construction, Collaboration. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Maponga2024, author={Maponga, Kurauwone and Emuze, Fidelis }, editor={ }, title={A Case for Lean-Based Guidelines for Construction and Demolition Waste Minimization in Zimbabwe}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={930-941}, url={http://www.iglc.net/papers/details/2248}, doi={10.24928/2024/0101}, affiliation={PhD Candidate, Department of Construction Management, Nelson Mandela University, Gqeberha, South Africa, kmaponga@gmail.com, orcid.org/0000-0002-5286-9635 ; Professor, Department of Built Environment, Central University of Technology, Free State, Private Bag X20539, Bloemfontein, 9301, South Africa, Tel: (051) 507 3089, Email: femuze@cut.ac.za. ORCID.org/0000-0001-7714-4457 }, abstract={Construction and Demolition Waste (CDW) significantly costs Zimbabwe, as most waste is directed to landfills, riverbanks, and open spaces. This has made construction practitioners call for efficient strategies such as lean construction (LC). LC could help minimize construction waste in on-site operations. It could reduce land and water pollution and the blockage of watercourses caused by CDW. Minimizing CDW creates cost savings and value for the construction project clients. Although LC has addressed CDW minimization in varying countries, this is not the case in Zimbabwe, where a pressing need for resource efficiency is urgent. Thus, this paper proposes a conceptual framework for evolving LC-based guidelines for minimizing CDW in Zimbabwe. A critical review of relevant literature was conducted to observe how LC tools are utilized to minimize CDW. Given that such a framework could limit the pollution of land and open spaces with CDW, which affects people and the built environment in general, the next phase of the doctoral study would be to test and modify it through mixed methods research empirically. }, author_keywords={Lean construction, Demolition, Lean, Waste, Pollution, Construction projects, Zimbabwe }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Minoretti2024, author={Minoretti, Arianna and Lædre, Ola and Wondimu, Paulos and Johansen, Agnar and Andersen, Bjørn }, editor={ }, title={Performance Measurement for Infrastructure Project Sustainability}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={942-953}, url={http://www.iglc.net/papers/details/2249}, doi={10.24928/2024/0109}, affiliation={PhD, Department of Civil and Environmental Engineering, Norwegian University of Science and Technology, Norway, arianna.minoretti@ntnu.no, orcid.org/0009-0008-2432-4946; Senior Principal Engineer, Technology and Development Department, Norwegian Public Roads Administration, Norway ; Professor, Department of Civil and Environmental Engineering, Norwegian University of Science and Technology, Norway, ola.ladre@ntnu.no, orcid.org/0000-0003-4604-8299 ; Adjunct Associate Professor, Department of Civil and Environmental Engineering, Norwegian University of Science and Technology, Norway, paulos.wondimu@vegvesen.no, orcid.org/0000-0001-9421-594X; Senior Engineer, Complex Constructions Department, Norwegian Public Roads Administration, Norway ; Professor, Department of Civil and Environmental Engineering, Norwegian University of Science and Technology, Norway, agnar.johansen@ntnu.no, orcid.org/0000-0003-0063-3679 ; Professor, Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, Norway, bjorn.andersen@ntnu.no, orcid.org/0000-0003-0533-2816 }, abstract={From a lean construction perspective, the role of a Public Roads Administration is to identify the value from the client’s point of view and define the processes able to develop the value stream. In the long-run strategy, the public role is to be sustainable and apply the sustainability principle in the management of the portfolio of projects under the administration's control. This implies the development of a performance measurement system for sustainability. The case of the Norwegian Public Roads Administration is presented and analysed in the paper, as an example of an actor working on performance measurement for sustainability. The purpose is to evaluate the state of the art and use document study and literature to propose improvements. The research questions addressed in the paper are how sustainability is measured today for the construction portfolio in the Norwegian Public Road Administration and what are the pros and cons of the actual method (for measuring sustainability today). The proposal for improvements is made by comparing the state of the art with performance measurement theory. }, author_keywords={Lean construction, sustainability, action research, performance measurement, and infrastructure projects. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Nguyen2024, author={Nguyen, Tran Duong and Pishdad, Pardis and Fanijo, Ebenezer O. }, editor={ }, title={A Comparative Analysis of Leed and Green Globes: A Case Study Approach to Environmental Performance Assessment of an Educational Campus Facility}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={954-968}, url={http://www.iglc.net/papers/details/2250}, doi={10.24928/2024/0129}, affiliation={PhD student, Georgia Institute of Technology, Atlanta, Georgia, United States, dnguyen458@gatech.edu, orcid.org/0000-0002-0024-4828 ; Associate Professor, Georgia Institute of Technology, Atlanta, Georgia, United States, pardis.pishdad@design.gatech.edu, orcid.org/0000-0003-4208-9755 ; Assistant Professor, Georgia Institute of Technology, Atlanta, Georgia, United States, ebenezer.fanijo@design.gatech.edu, orcid.org/0000-0001-8702-3974 }, abstract={The construction industry faces significant challenges in reducing energy consumption and achieving sustainability goals. Green building rating systems (GBRS) have been created to assess and confirm the effectiveness of sustainable construction practices. As buildings strive to reduce energy consumption, a holistic approach to building design, construction, and operation is necessary. The study aims to explore sustainable construction practices and their sustainability in high-performance green buildings (HPGB). The Georgia Tech Life Science Building (GTLSB), designed to serve the life science community in Metro Atlanta, is the chosen case study. Our research will involve (1) examining guidelines and standards for a sustainable building, (2) understanding the use of sustainable criteria, and (3) demonstrating technical expertise. Initially, we conducted a literature review of the current state of the GBRS and analyzed project information as a case study. Our analysis showcases an in-depth understanding of the technologies, methods, and resources required to produce and operate an HPGB. Our findings contribute to the knowledge of sustainable building and provide insights into the utilization of GBRS, focusing on two widely adopted systems, LEED and Green Globes (GG). The study’s findings will help promote sustainable construction practices for professionals, policymakers, educators, and researchers and help achieve a more sustainable built environment. }, author_keywords={Green building rating systems, LEED, Green Globes, Sustainable construction practices, High-Performance Green Building. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Vauk2024, author={Vauk, Björn Bernhard and Dalchau, Dennis }, editor={ }, title={Jet Grouting: Applying Lean Principles in Geotechnical Engineering to Reduce Waste}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={969-977}, url={http://www.iglc.net/papers/details/2251}, doi={10.24928/2024/0142}, affiliation={PhD Student, Institute for Production Technology and Systems (IPTS), Leuphana University Lüneburg, Germany, bjoern.vauk@leuphana.de, https://orcid.org/0009-0006-3464-3049 ; PhD Candidate, Leuphana Law School (LLS), Leuphana University Lüneburg, Germany, dennis.dalchau@leuphana.de, https://orcid.org/0009-0005-8918-9253 }, abstract={Jet grouting is a widely used method for ground improvement and for sealing measures in geotechnical engineering. Due to the nature of the process, the material consumption of water-binder suspension is high. The objective of this research is to enable a more efficient use of resources by evaluating and reducing the waste of the resources used in the jet grouting process, taking lean principles into account. The objective of this paper is to develop a production flow model for the jet grouting process. This is to enable a continuous improvement of the production processes and a reduction of the associated material consumption through recycling. A production flow model is proposed to determine the amount of binder suspension required for production as a function of production time. The model presented will be used to control and continuously improve the production process and associated use of resources in future research. This will be done in accordance with the lean principles of customer value, value stream identification, flow, pull and striving for perfection. }, author_keywords={Lean and Green, Sustainability, Waste, Production Pull }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Dhawan2024, author={Dhawan, Kamal and Tookey, John E. and Poshdar, Mani }, editor={ }, title={Lean Construction Supply Chain: A Transport Perspective}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={978-989}, url={http://www.iglc.net/papers/details/2252}, doi={10.24928/2024/0147}, affiliation={Lecturer, Built Environment Engineering Department, Auckland University of Technology, Auckland, New Zealand, kamal.dhawan@aut.ac.nz, orcid.org/0000-0002-1852-7236 ; Professor, School of Future Environments, Auckland University of Technology, Auckland, New Zealand, john.tookey@aut.ac.nz, orcid.org/0000-0002-9347-9078 ; Senior Lecturer, Built Environment Engineering Department, Auckland University of Technology, Auckland, New Zealand, mani.poshdar@aut.ac.nz, orcid.org/0000-0001-9132-2985 }, abstract={The extensive and interdisciplinary construction supply chain is susceptible to inefficiencies at the interfaces of organisations. These inefficiencies are exacerbated by intricate logistics systems that operate among numerous stakeholders and actors, involving concurrent activities, processes, and on- and off-site systems. Transportation stands out as the most significant element within construction logistics. The fragmentation of the transport function stems from its intrinsic nature to every business, typically involving externalised asset ownership and deployment. Inefficiencies infiltrate the system due to isolated planning across different segments, gradually accumulating into macro-level visibility. To optimise logistics, particularly the transport function, identified strategies involve reconfiguring activities, combining resources, and repositioning actors. This paper delves into the impact of vertically integrating distribution, implementing integrated planning for transport operations, and incorporating reverse logistics into operations on the transport function within a supply chain for manufactured construction products. The study evaluates sustainability impacts using transport efficiency metrics and domestically determined parameters to benchmark the 'leaning and greening' of the specific supply chain under consideration. }, author_keywords={Construction transport, Construction logistics, Optimised transport, Lean construction supply chain. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Awwal2024, author={Awwal, Samira and Tzortzopoulos, Patricia and Gulzar, Mohammad Ruhail and Mishra, Rakesh and Fleming, Leigh and Conor, Scott }, editor={ }, title={Smart Homes and Waste Reduction}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={990-1002}, url={http://www.iglc.net/papers/details/2253}, doi={10.24928/2024/0172}, affiliation={Research Assistant, Department of Engineering & Technology, School of Computing & Engineering, University of Huddersfield, Huddersfield, United Kingdom, s.awwal3@hud.ac.uk, https://orcid.org/0000-0001-7771-1511 ; Professor, Department of Design and Built Environment, School of Arts and Humanities, University of Huddersfield, United Kingdom, p.tzortzopoulos@hud.ac.uk , https://orcid.org/0000-0002-8740-6753 ; KTP Associate, Department of Engineering & Technology, School of Computing & Engineering, University of Huddersfield, Huddersfield, United Kingdom, m.r.gulzar@hud.ac.uk, https://orcid.org/0009-0004-1983-2250 ; Professor, Department of Engineering & Technology, School of Computing & Engineering, University of Huddersfield, Huddersfield, United Kingdom, r.mishra@hud.ac.uk, https://orcid.org/0000-0002-1620-3238 ; Reader, Department of Engineering & Technology, School of Computing & Engineering, University of Huddersfield, Huddersfield, United Kingdom, l.t.fleming2@hud.ac.uk, https://orcid.org/0000-0002-6962-8686 ; Technical Director, Trust Electric Heating Ltd., Leeds, United Kingdom, scott@trustelectricheating.co.uk }, abstract={The concept of smart homes includes smart technologies, systems, and devices to facilitate efficiency, security, comfort, and overall management of the home environment. This paper presents the concept of smart homes and discusses how it relates to waste reduction, especially energy waste. As waste reduction is one of the key lean principles, the notion of a "smart home" and " waste reduction" can be connected to optimising efficiency and increasing the functionality of the home. An experiment was carried out in the Huddersfield smart house research facility for the optimisation of energy usage through smart home technologies and efficient appliances, resulting in lifecycle waste reduction. The investigation highlights the connection between Smart Home’ and ‘Lean Waste Principles’ indicating how energy use in the building lifecycle is hidden in lean waste. This suggests a need for future empirical research to better understand how to reduce waste using smart home technology and provide solutions to resolve energy waste on a wider scale. }, author_keywords={Smart Home, energy efficiency, waste reduction, comfort, lean waste }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Alazmi2024, author={Alazmi, Saleh and Abdelmegid, Mohammed and Sarhan, Saad and Poshdar, Mani and Gonzalez, Vicente }, editor={ }, title={An Integrated Framework for Production and Environmental Waste Management in Construction}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1003-1014}, url={http://www.iglc.net/papers/details/2254}, doi={10.24928/2024/0183}, affiliation={PhD, Department of Civil and Environmental Engineering, The University of Auckland, New Zealand ; Lecturer in Engineering Management, School of Civil Engineering, University of Leeds, UK, M.Abdelmegid@leeds.ac.uk, orcid.org/0000-0001-6205-570X ; Assistant Professor in Advanced Engineering Management, Department of Civil Engineering, University of Birmingham Dubai, UAE, s.sarhan@bham.ac.uk, orcid.org/0000-0002-0105-2350 ; Senior lecturer, Auckland University of Technology, School of Future Environments, New Zealand, mani.poshdar@aut.ac.nz, orcid.org/0000-0001-9132-2985 ; Professor and Tier 1 Canada Research Chair in Digital Lean Construction, Department of Civil and Environmental Engineering, University of Alberta, Canada, https://orcid.org/0000-0003-3408-3863 }, abstract={Lean construction has successfully developed and utilised several tools to minimise production waste generation in construction projects. In addition, sustainability research has contributed to improving the environmental performance of the construction industry by managing the impact of construction waste on the environment. Research on construction sustainability has been utilising some of the capabilities of lean construction tools to address environmental-related issues that are difficult to tackle using conventional approaches. Even though research in the Lean-Sustainability area has progressed over the last two decades, knowledge of Lean-Sustainability applications is still limited amongst industrial practitioners. A potential reason is the lack of an integrated approach combining lean principles and sustainability for construction applications. To address this limitation, this paper proposes a management framework that deals with both production and environmental wastes concurrently. The framework is developed by combining a lean process improvement method with an environmental management system approach. The framework is validated through interviews with experts in lean construction and sustainability to establish its theoretical contribution and practical applicability. Through this integrated waste management framework, this study contributes to the efforts of managing production and environmental wastes to deliver more efficient and environmentally friendly projects in the construction industry. }, author_keywords={Sustainability, Lean Construction, Value Stream, Production waste, Environmental waste }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Assaf2024, author={Assaf, Sena and Ezzedine, Farah and Nahle, Amal and Zahr, Hala and Hamzeh, Farook }, editor={ }, title={Evaluating the Awareness of Designing Out Waste in Construction: A Lean–Green Synergy}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1015-1026}, url={http://www.iglc.net/papers/details/2255}, doi={10.24928/2024/0192}, affiliation={Ph.D. Student, Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada, sassaf1@ualberta.ca, https://orcid.org/0000-0003-3256-3310 ; Civil Engineer, Department of Civil and Environmental Engineering, American University of Beirut, Beirut, Lebanon, farah.h.ezzedine@gmail.com, https://orcid.org/0009-0001-6668-4631 ; Civil Engineer, Department of Civil and Environmental Engineering, American University of Beirut, Beirut, Lebanon, amal_nahle1@hotmail.com, https://orcid.org/0009-0006-2591-1873 ; Civil Engineer, Department of Civil and Environmental Engineering, American University of Beirut, Beirut, Lebanon, Halazahr96@gmail.com, https://orcid.org/0009-0009-9122-4205 ; Professor, Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada, hamzeh@ualberta.ca, https://orcid.org/0000-0002-3986-9534 }, abstract={The construction industry generates millions of tons of material waste annually throughout a project’s life cycle. In Lebanon, one million tons of Construction and Demolition Waste were generated during the years 2009 and 2010. To support organizations in enhancing their environmental efficiency, the Green paradigm has emerged. Such a paradigm can be complemented with the Lean management approach paving the way for a Lean-Green synergy. This synergy is based on the alignment of the two approaches on the need to minimize waste, in its different forms, as well as maximize stakeholder value; the client, and the environment. As such, this paper introduces the concept of the Design out Waste (DoW) approach. This approach aims to improve the sustainability aspect of a project, throughout its lifecycle and starting from the early design phase, supported by Lean tools and principles. Specifically, the aim of this paper is to investigate the current state and examine the level of awareness of implementing DoW principles in the Lebanese construction industry through conducting surveys. The survey results showed a low level of awareness of the DoW approach among practitioners in Lebanon with little attention given to waste minimization when making decisions. }, author_keywords={Lean construction, Green construction, sustainability, Lean-Green synergy, waste minimization }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Tetik2024, author={Tetik, Müge and Koskela, Lauri and Pikas, Ergo and Vendel, Kädi-Riin }, editor={ }, title={Evaluation of the Literature Syntheses on Lean Construction Contributions to Sustainability}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1027-1038}, url={http://www.iglc.net/papers/details/2256}, doi={10.24928/2024/0194}, affiliation={Post-Doctoral Researcher, Dept. of Industrial Engineering and Management, LUT University, Finland, muge.tetik@lut.fi, orcid.org/0000-0002-4013-0577 ; Adjunct Professor, Dept. of Civil Engineering and Architecture, Tallinn University of Technology, Estonia, lauri.koskela@taltech.ee, orcid.org/0000-0003-2769-0243 ; Assistant Professor, Dept. of Civil Engineering and Architecture, Tallinn University of Technology, Estonia, ergo.pikas@taltech.ee, orcid.org/0000-0001-5691-685X ; Project Expert, Dept. of Civil Engineering and Architecture, Tallinn University of Technology, Estonia, kadiriin.vendel@taltech.ee, orcid.org/0009-0004-1702-1817 }, abstract={In the last ten years, the interest in the question on how lean construction could contribute to sustainability has considerably increased. This is reflected in the rapidly growing number of publications addressing this question. Especially systematic literature reviews have been popular. In this explorative paper, such reviews are critically evaluated. A synthesis of findings about the conceptual framework of the relation between lean and sustainability is provided. Based on the findings, we determine the missing topics in the available literature reviews. For example, target value design and takt production have not been gaining attention on reviews focusing on lean and sustainability relationship compared to other lean methods. We present suggestions for future research as well as a conceptual framework for contributions of lean construction on sustainability. }, author_keywords={Lean construction, sustainability, critical evaluation, target value design. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Shaibh2024, author={Shaibh, Abdulmhseen and Parrish, Kristen }, editor={ }, title={Coupling Demand Response and PDCA to Lean Building Operations: A Proof-of-Concept}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1039-1050}, url={http://www.iglc.net/papers/details/2257}, doi={10.24928/2024/0199}, affiliation={Graduate Student, School of Sustainable Engineering and the Built Environment, Arizona State University, ashaibh@asu.edu ; Associate Professor, School of Sustainable Engineering and the Built Environment, Arizona State University, Kristen.Parrish@asu.edu }, abstract={The Plan-Do-Check-Act (PDCA) approach allows stakeholders to identify potential changes and measure their impacts on a small scale prior to making a larger investment in such a change. One change that could be evaluated through PDCA is the installation or implementation of energy efficiency measures (EEMs). Building owners may be reticent to implement energy efficiency measures (EEMs) without fully understanding their costs and benefits. A PDCA approach coupled with demand response (DR) – whereby building owners reduce electricity consumption during periods of peak electricity demand in exchange for incentive payments – allows owners to assess EEM performance in a pilot study prior to making a larger investment in the EEM. Various EEMs can help building owners and operators shift their energy consumption to off-peak hours to earn DR incentives, e.g., reducing lighting power via controls, precooling a building prior to the peak hours. This paper documents how one building owner, Arizona State University, leveraged PDCA to identify DR strategies for a campus building and then used results from the DR event to identify permanent EEMs for the building. This case study serves as a proof of concept that indicates that a PDCA approach that leverages DR implementation supports identification of EEMs for permanent installation. }, author_keywords={PDCA, energy management, lean operations. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Scagliotti2024, author={Scagliotti, Giulia and Lessing, Jerker and Fischer, Martin }, editor={ }, title={Insights on Sustainability in Industrialized Construction in Europe and the United States}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1051-1062}, url={http://www.iglc.net/papers/details/2258}, doi={10.24928/2024/0224}, affiliation={PhD Candidate, Civil and Environmental Engineering Department, Stanford University, Stanford, USA, gscaglio@stanford.edu, orcid.org/0009-0006-8318-3982. ; Adjunct Professor, Civil and Environmental Engineering Department, Stanford University, Stanford, USA, jlessing@stanford.edu. ; Professor, Civil and Environmental Engineering Department, Stanford University, Stanford, USA, fischer@stanford.edu. }, abstract={Embracing lean philosophy, which emphasizes waste reduction and resource efficiency, is a pre-condition to improving the environmental impact of a building but is not sufficient to produce a sustainable building. To increase the environmental sustainability of their products, industrialized construction (IC) companies need to understand the constraints of the location where they operate, and best practices applied by leading IC companies. To delve into constraints and best practices, we interviewed sustainability leaders of six IC companies at the forefront of sustainability practices in Europe and the United States. The purpose of each interview was to highlight the challenges and opportunities caused by external factors that companies are experiencing, and the advancements that other companies could replicate. Based on comparative analysis, our results show stricter sustainability regulations and a collaborative stakeholders’ network with similar sustainability goals in Europe compared to the US. These factors seem to favor 1) a careful evaluation of tradeoffs when considering technical solutions; 2) the adoption of disassembly, adaptability, and circularity principles; 3) the development of new business models; and 4) companies developing new rating systems to capture their advanced product sustainability. Our results can inform lagging IC companies to adopt the most advanced sustainability practices. }, author_keywords={Lean Construction, Lean and Green, Sustainability, Industrialized Construction, Off-site Construction }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Pikas2024, author={Pikas, Ergo and Lõhmus, Rauno and Koskela, Lauri and Tetik, Müge and Vendel, Kädi-Riin }, editor={ }, title={Carbon Emissions of Construction Operations in a Cold Climate}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1063-1073}, url={http://www.iglc.net/papers/details/2259}, doi={10.24928/2024/0228}, affiliation={Assistant Professor, Department of Civil Engineering and Architecture, Tallinn University of Technology, Estonia, ergo.pikas@taltech.ee, orcid.org/0000-0001-5691-685X. ; Project Manager, Maru Ehitus AS, Tallinn, Estonia. ; Adjunct Professor, Department of Civil Engineering and Architecture, Tallinn University of Technology, Estonia, lauri.koskela@taltech.ee, orcid.org/0000-0003-4449-2281. ; Post-Doctoral Researcher, LUT School of Engineering Sciences, muge.tetik@lut.fi, orcid.org/0000-0002-4013-0577. ; Project Expert, Department of Civil Engineering and Architecture, Tallinn University of Technology, Estonia, kadiriin.vendel@taltech.ee, orcid.org/0009-0004-1702-1817. }, abstract={This study focuses on the energy use of construction operations and explores the associated greenhouse gas (GHG) emissions. The case study methodology is used in this exploratory investigation to assess the energy consumption and GHG of eight construction projects in Estonia. The findings highlight the need to account for heating and illumination emissions, underlining the importance of including construction phase emissions in building lifecycle carbon assessments. No strong correlation between building size and energy consumption is found, but there seems to be a connection between project duration, use function, and emissions. It suggests that addressing the embodied carbon of construction operations, particularly when heating is required, is crucial for reducing the overall carbon footprint. This study develops and invites the lean community to establish a baseline for construction operations' energy use and related GHG emissions. A baseline is needed to facilitate the continuous improvement of construction processes from the sustainability viewpoint. }, author_keywords={Sustainable construction, energy consumption of construction operations, greenhouse gas emissions, winter heating and illumination. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Diaz2024, author={Diaz, Michelle and Neyra, Mauricio and Gomez, Sulyn }, editor={ }, title={Assessing Environmental Impacts: A Case Study of Circular Economy on Construction Materials}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1074-1085}, url={http://www.iglc.net/papers/details/2260}, doi={10.24928/2024/0230}, affiliation={Student, School of Environmental Engineering, National University of Engineering, Lima, Peru, mndiazv@uni.pe, orcid.org/0000-0002-7711-1695 ; Graduate Student, School of Civil Engineering, National University of Engineering, Lima, Peru, mauricio.neyra.p@uni.pe, orcid.org/0009-0007-7379-5798 ; Quality Leader, DPR Construction, Redwood City, USA, sulyng@dpr.com, orcid.org/0000-0003-2367-9880 }, abstract={The construction sector is a major contributor to environmental degradation, accounting for a significant portion of global energy-related carbon dioxide emissions. The traditional linear construction practices follow a “take-make-dispose” model, which entail the extraction of raw materials, manufacturing of construction products, their use in building projects, and ultimately the disposal of waste generated throughout construction projects. Both Lean and Circular Economy (CE) are philosophies that seek to minimize waste. While Lean promotes value through the reduction of production waste during design and construction, CE proposes the reduction of material waste by promoting closed-loop material flows throughout the construction lifecycle. Applying Lean and CE principles to construction waste management shows promise in reducing negative environmental impacts. Despite increasing interest, a comprehensive assessment of CE’s impact in this context has not been thoroughly presented yet. This study aims to close this gap by analyzing the environmental performance within a case adopting CE principles using Life Cycle Assessment information. Results indicate significant reductions in Global Warming and Ecotoxicity using CE. Meanwhile, Lean provides another approach to waste reduction by avoiding the generation of environmental waste through production control. This research underscores CE’s efficacy in mitigating negative environmental impacts while identifying areas for further optimization. }, author_keywords={Lean, Circular Economy, Life Cycle Assessment, Environmental Impact, Waste. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Malvik2024, author={Malvik, Tobias O. and Engebø, Atle }, editor={ }, title={Transition to a Lean Mindset Through the “Hero’s Journey”}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1086-1098}, url={http://www.iglc.net/papers/details/2261}, doi={10.24928/2024/0105}, affiliation={PhD Candidate, Civil and Environmental Engineering Department, Norwegian University of Science and Technology (NTNU), Trondheim, Norway, tobias.o.malvik@ntnu.no, https://orcid.org/0000-0002-7588-1899 ; Researcher, PhD, Norwegian University of Science and Technology (NTNU), Trondheim, Norway, +47 905 71 902, atle.engebo@ntnu.no, orcid.org/0000-0002-5293-0176 }, abstract={Transitioning from a conventional, established, and familiar project mindset to a Lean mindset has proved challenging and is a barrier to implementing Lean Construction. It has been argued that shifting from traditional management thinking to a Lean mindset can be considered a paradigm shift. Such substantial changes will require overcoming innate resistance and adjusting ingrained habits to become progressive and open-minded to the potential benefits of new ideas. This conceptual paper investigates how the potentially demanding change from a traditional mindset to a Lean mindset can be dealt with by employing Joseph Campbell’s “Hero’s Journey” framework. The Hero’s Journey describes a generic journey about overcoming challenges met when facing unfamiliar territory. It is found in antique stories but is also applicable in life. A way to tackle the challenging task of adjusting to the ongoing change in the construction industry using the Hero’s Journey is proposed in this paper. The research shows that applying the Hero’s Journey framework in a construction context can be valuable for making the transition to a Lean mindset less daunting for practitioners. }, author_keywords={Lean construction, Hero’s journey, Collaboration, Storytelling, Change }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Haronian2024, author={Haronian, Eran and Korb, Samuel }, editor={ }, title={Magical vs Methodical: Choosing by Advantages as Antidote to the Planning Fallacy}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1099-1110}, url={http://www.iglc.net/papers/details/2262}, doi={10.24928/2024/0115}, affiliation={Lecturer, Department of Civil Engineering, Ariel University, Ariel, 40700, Israel, eranha@ariel.ac.il ; PhD, Graduate of the Faculty of Civil and Environmental Engineering, Technion - Israel Institute of Technology, Haifa, Israel, m1uwv6junqzd@opayq.com }, abstract={Cost and schedule overruns are the bane of construction projects, in part due to overly optimistic predictions of project progression. This “optimism bias” is called the planning fallacy, a form of “magical thinking” where planners convince themselves that their project will be different (and better) than others. “Choosing by Advantages” (CBA) is a methodical approach for decision-making. By engaging “slow thinking” at the organizational level, CBA can help counteract the tendency to default to best-case scenarios when selecting among designs and production methods, even in the middle of a project. In this paper, a case study of a Pumped Hydroelectric Energy Storage facility that had to choose between a bottom-up raise boring and a top-down shaft sinking construction method for the vertical shaft connecting the reservoirs is presented. The paper then examines how CBA helped shift the thinking of the project team away from fallacious planning and overcome the sunk-cost fallacy. }, author_keywords={Choosing by Advantages, Optimism Bias, Planning Fallacy, Risk Management, Monte Carlo }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Villanueva2024, author={Villanueva, Sulyn Gomez and Ballard, Glenn and Terni, Stephen and Arroyo, Paz and Bello, Kevin }, editor={ }, title={An Exploration of Psychological Safety and Team Behaviors in a Construction Global Team}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1111-1122}, url={http://www.iglc.net/papers/details/2263}, doi={10.24928/2024/0130}, affiliation={Quality Leader, DPR Construction, Redwood City, USA, sulyng@dpr.com, orcid.org/0000-0003-2367-9880 ; Research Associate, Project Production Systems Laboratory (P2SL), University of California, Berkeley, USA, gballard@berkeley.edu, orcid.org/0000-0002-0948-8861 ; Quality National Leader, DPR Construction, Pasadena, USA, stephent@dpr.com, orcid.org/0009-0008-1217-2842 ; Quality Leader, DPR Construction, San Francisco, USA, paza@dpr.com, orcid.org/0000-0002-8098-8172 ; Principal Researcher, The University of Chicago, USA, bellok@uchicago.edu, orcid.org/0000-0002-3661-8158 }, abstract={Psychological safety is a construct that has garnered attention in academia and industries over the last two decades. Research has shown the connection between psychological safety and several team behaviors, from learning to active caring. Most research however has focused on exploring psychological safety within traditional teams. This paper extends the research on psychological safety by capturing the psychological safety and behavioral dynamics of a global virtual corporate team in the construction industry. We found that psychological safety positively relates to some behaviors such as making reliable promises and active listening, and these in turn positively relate to better team performance. This paper also describes actions the team in the study committed to follow to improve, based on the assessment conducted in this study. Future research should concentrate on using longitudinal assessments to explore variations within the team over time and understand what interventions can improve team dynamics. }, author_keywords={Psychological safety, behaviors, team dynamics, global teams, learning, reliable promising }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Häringer2024, author={Häringer, Selina and Gomez, Sulyn and Schöttle, Annett }, editor={ }, title={An Investigation of Psychological Safety in Construction Projects and Its Influence on Team Learning Behaviour: A Survey-Based Study}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1123-1134}, url={http://www.iglc.net/papers/details/2264}, doi={10.24928/2024/0150}, affiliation={MSc Business and Organizational Psychology, University of Westminster, London, DE, shaeringer@web.de, orcid.org/0009-0000-3276-4767 ; Quality Leader, DPR Construction, Redwood City, USA, sulyng@dpr.com, orcid.org/0000-0003-2367-9880 ; Dr.-Ing., CBA and Lean Expert, Founder and Co-Director at CollabDecisions, annett.schoettle@web.de, orcid.org/0000-0001-6001-7320 }, abstract={Due to a construction project's dynamic, interdependent, and complex environment, it is crucial that team members are able to talk openly about risks, mistakes, ideas and best practices without fearing interpersonal risks such as punishment or dismissal. Sharing knowledge is especially critical as team structures change over a project. Therefore, psychological safety is an essential key enabler in such project environments. This paper is built upon a cross-sectional survey-based study (N=163) used to assess the current level of psychological safety within teams of the Owner, Architect, Engineering, and Construction (OAEC) industry based on the views of individuals in different teams. Furthermore, the study aimed to identify factors that can enhance psychological safety in construction project teams. These include, for example, a good failure culture, communication, and a mindset toward collaboration. The results show a strong positive relationship between psychological safety and team learning behavior, with psychological safety as a predictor explaining 50% of the variance in team learning behavior. }, author_keywords={Construction project teams, psychological safety, team learning behaviour. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Arroyo2024, author={Arroyo, Paz and Villanueva, Sulyn Gomez }, editor={ }, title={The Right Kind of Wrong in Construction: Analysis From a General Contractor Perspective}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1135-1146}, url={http://www.iglc.net/papers/details/2265}, doi={10.24928/2024/0153}, affiliation={Quality Leader, DPR Construction, San Francisco, USA, paza@dpr.com, and co-founder CollabDecisions, orcid.org/0000-0002-8098-8172 ; Quality Leader, DPR Construction, Redwood City, USA, sulyng@dpr.com, orcid.org/0000-0003-2367-9880 }, abstract={The idea that not every mistake is preventable and that we can make mistakes and not be ashamed of them if we learn from them is not new in Lean Construction; however, new research from the field of psychology sheds light on human behavior and our willingness to explore and learn from failure. This paper explores how these new findings apply to construction. In this paper, we study different types of failure using Edmonson’s classifications of basic, complex, and intelligent failure. We illustrate with cases of failure collected in the Building Quality Builders Class, which is an internal training provided by a general contractor in the USA. Finally, we present strategies for preventing basic and complex failures and encouraging intelligent failures in the context of construction projects. More research is needed to develop a culture to foster learning from all types of failure. }, author_keywords={Failures, psychological safety, continuous improvement, quality, and learning. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Ead2024, author={Ead, Rana and Liu, Kexin and Saleh, Amira and Assaf, Sena and Gonzalez-Moret, Vicente and Hamzeh, Farook }, editor={ }, title={A Fuzzy Expert System for Measuring the Degree of Lean Implementation in Construction Projects}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1147-1158}, url={http://www.iglc.net/papers/details/2266}, doi={10.24928/2024/0159}, affiliation={Ph.D. Student, Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada, rsead@ualberta.ca, https://orcid.org/0000-0001-9377-2138 ; Ph.D. Student, Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada, kexin10@ualberta.ca, https://orcid.org/0000-0002-1262-1440 ; Ph.D. Student, Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada, asaleh2@ualberta.ca, https://orcid.org/0000-0002-3835-3931 ; Ph.D. Student, Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada, sassaf1@ualberta.ca, https://orcid.org/0000-0003-3256-3310 ; Professor and Tier 1 Canada Research Chair in Digital Lean Construction, Infrastructure Human Tech Lab, Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada, vagonzal@ualberta.ca, https://orcid.org/0000-0003-3408-3863 ; Professor, Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada, hamzeh@ualberta.ca, https://orcid.org/0000-0002-3986-9534 }, abstract={Lean construction has emerged as a production management philosophy that can achieve significant performance improvements within the construction industry. However, the industry has not yet achieved full potential in terms of the implementation of Lean principles as compared to other industries. Such achievement necessitates continuous improvements throughout the project lifecycle. However, it is first necessary to understand the current level of Lean implementation to identify opportunities for improvement. Previous researchers have developed frameworks for measuring the degree of Lean implementation of an organization as a means to assess continuous improvements. However, being on the organizational level, these frameworks might not provide the means for assessing the incremental improvements toward transforming into a “Lean” construction company. There is a need to gauge the level of lean implementation at the project level, serving as a crucial stepping stone for overall organizational achievement. Accordingly, this study aims to develop a framework for measuring the degree of Lean implementation in a construction project using fuzzy expert systems (FES). This system provides decision-makers with an evaluation of the current implementation of Lean in construction which, in turn, provides a direction on further opportunities for improvement. }, author_keywords={Lean construction, Lean implementation, fuzzy expert systems (FES). }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Aisyah2024, author={Aisyah, Rina Asri and Putra, Prama }, editor={ }, title={Towards Sustainable Lean Construction in Indonesian Contractor: Effort & Learning From Ptpp (a Government-Controlled Construction & Investment Company)}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1159-1169}, url={http://www.iglc.net/papers/details/2267}, doi={10.24928/2024/0169}, affiliation={Lean Construction and Innovation Management System, Division of Strategy, Planning, and Technology, PT PP (Persero) Tbk, Jakarta, Indonesia, aisyah_rina@ptpp.co.id ; Faculty Lecturer, Institut Teknologi Bandung, Bandung Indonesia, prama.putra@itb.ac.id, orcid.org/0000-0003-4045-9628 }, abstract={The construction industry must adapt to contemporary challenges; there is a need to change the paradigm of the industry, including in Indonesia. Lean thinking is an example of the evolving paradigm in the construction industry, called lean construction. It emphasises maximising efficiency, minimising waste, and delivering value to the customer through collaborations, optimised workflows, and project performance enhancement. For a construction company such as PT PP (Persero) Tbk (a government-controlled construction & investment company), which have adopted the lean concept in the last five years, there is a need to create an environment that supports lean as quickly as possible. For a company that is relatively new to lean involvement and methodology, education is crucial for raising awareness and understanding of lean construction among the company members. This paper presents an exposition of effort and learning for lean transformation by using Community of Practice as a method to disseminate lean knowledge and experience and share details of the activities about programs as an action learning. The authors will share their experience and learning of making the sustainable change in the company through the lessons learned. }, author_keywords={Lean Construction, Sustainable, Collaboration, Lean Education, Action Learning, Community of Practice }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Schwarzweller2024, author={Schwarzweller, Elisa and Haghsheno, Shervin }, editor={ }, title={Collaboration Strategies for Infrastructure Projects of Germany’S Federal Waterways and Shipping Administration}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1170-1181}, url={http://www.iglc.net/papers/details/2268}, doi={10.24928/2024/0170}, affiliation={Research Associate, Department of Civil Engineering, Geo- and Environmental Sciences, Institute of Technology and Management in Construction, Karlsruhe Institute of Technology, Karlsruhe, Germany, elisa.schwarzweller@kit.edu, orcid.org/0000-0003-3926-1884 ; Professor, Department of Civil Engineering, Geo- and Environmental Sciences, Director, Institute of Technology and Management in Construction, Karlsruhe Institute of Technology, Karlsruhe, Germany, shervin.haghsheno@kit.edu, orcid.org/0000-0002-0602-6370 }, abstract={The improvement of collaboration in construction projects can lead to a more stable and efficient project delivery. Nevertheless, Germany’s Federal Waterways and Shipping Administration (WSV) has limited experience with strategically implementing elements to promote collaboration in construction projects. Therefore, initial steps have been taken in the WSV by identifying major infrastructure projects along Germany’s waterways to initiate the implementation of collaborative elements, such as Lean Construction methods. The aim thereby is to make experiences to improve future projects. This article describes a research project which was set up to systematically record and document experiences with collaboration elements in selected pilot projects. Also, the outcomes of an initial survey which gives insights into the pilot projects are presented. Furthermore, the results of a survey regarding experiences during the procurement phase of one chosen pilot project are presented. The results show that there is no clear definition of collaboration within construction projects in the WSV and that there is a need for further research to develop solutions and recommendations for the improvement in future projects by utilizing collaboration elements. }, author_keywords={Collaboration strategies, infrastructure projects, waterway construction, system change. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Eltahan2024, author={Eltahan, Amira and Shehab, Lynn and Hamzeh, Farook }, editor={ }, title={Driving the Momentum Towards Adopting Wearable Cognitive Assistance in Lean Construction 4.0}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1182-1194}, url={http://www.iglc.net/papers/details/2269}, doi={10.24928/2024/0182}, affiliation={Ph.D. Student, Hole School of Construction Engineering, University of Alberta, AB, Canada ; Ph.D. Candidate, Hole School of Construction Engineering, University of Alberta, AB, Canada ; Professor, Hole School of Construction Engineering, University of Alberta, AB, Canada }, abstract={Despite the transformative potential of Wearable Cognitive Assistance Devices (WCADs), their integration into the construction industry remains limited, marked by challenges such as practicality and regulatory barriers. Additionally, the increasing interest in implementing Lean principles in construction for enhanced project performance creates a potential intersection. This study aims to bridge both concepts by developing a conceptual framework for the implementation of WCADs in construction tasks within the Lean Construction 4.0 paradigm. It first explores the current state of WCAD in various industries and proposes a WCAD implementation framework for construction. The framework employs a stepwise approach, and its theoretical implementation in masonry works illustrates its adaptability to specific construction contexts. This framework's contribution lies in its potential to offer dynamic, adaptive, and personalized support, optimizing cognitive functions, and promoting safer and more productive task execution. This framework utilizes wearable sensors as one it’s data collection methods; thereafter, the integration of the data collected will then provide users with near real-time feedback to mitigate risks and enhance workers performance. As a theoretical foundation, this research paves the way for practical validation and future enhancements, aiming to enhance the construction industry's approach to worker well-being and performance. }, author_keywords={Lean Construction, Design Science, Continuous Improvement, Wearable Cognitive Assistance. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Pérez2024, author={Pérez, Cristina T. and Madushanka, Malik and Loyola, Lorenzo and Ergul, Melisa and Salling, Stephanie T. and Wandahl, Søren }, editor={ }, title={The Impact of Lean Knowledge and Lean Operation on Construction Workers' Job Satisfaction}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1195-1206}, url={http://www.iglc.net/papers/details/2270}, doi={10.24928/2024/0188}, affiliation={Assistant Professor, Department of Civil & Architectural Engineering (DCAE), Aarhus University (AU), Denmark, cristina.toca.perez@cae.au.dk, https://orcid.org/0000-0002-4182-1492 ; Master student, DCAE, AU, Denmark, malikmadushanka52@gmail.com, https://orcid.org/0009-0006-2562-5121 ; Master student, DCAE, AU, Denmark, lorenzoloyola@gmail.com, https://orcid.org 0009-0005-2489-2677 ; Master student, DCAE, AU, Denmark, melisaergul2709@gmail.com, https://orcid.org/0009-0003-3525-3040 ; Research Assistant, DCA, AU, Denmark, stsa@cae.au.dk, https://orcid.org/0000-0001-7088-6458 ; Professor, DCAE, AU, Denmark, swa@cae.au.dk, https://orcid.org/0000-0001-8708-6035 }, abstract={This study is part of an ongoing research project that aims to understand workers' job satisfaction in the construction industry. For that, a survey was applied among construction workers in Denmark. This paper aims to identify the impact of Lean Construction on job satisfaction. Data from 2176 responses were analysed using framework analysis, shorting the answers into three categories: Lean knowledge; Lean application; and Lean operation, even though they declared not knowing Lean. The study investigated the impact of the different levels of Lean familiarity on job satisfaction within five aspects: Project progress; Management-employee relationship; Employee work monitoring; Workload; and Workflow. Findings indicate that only 15% of respondents have some knowledge of Lean concepts, with only 8% confirming its application. The strongest correlation (R2=0.557) was found between the Lean practice of “organization attempt to keep workers informed” and the job satisfaction factor of “manager-worker relationship”. Allowing the workers to evolve and improve presented, also, a strong correlation with job satisfaction. The study highlights that Lean practices that lead or require Respect for People are the aspects that impact the most on job satisfaction. The results emphasize that implementing Lean principles effectively matters more than merely being familiar with them. }, author_keywords={Job satisfaction, Survey, Respect for people, Communication. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Erazo-Rondinel2024, author={Erazo-Rondinel, Andrews A. and Rivera-Nalvarte, Coraima C. and Villar-Vasquez, Jesús A. and Melgar-Morales, Mauricio A. and Giménez, Zulay }, editor={ }, title={Respect for People and Lean Construction: Good Practices, Benefits and Barriers}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1207-1218}, url={http://www.iglc.net/papers/details/2271}, doi={10.24928/2024/0191}, affiliation={Teaching Assistant, Professional School of Civil Engineering, Universidad Continental, Huancayo, Peru, aerazo@continental.edu.pe , orcid.org/0000-0002-5639-573X ; Student Researcher, Faculty of Civil Engineering, Universidad Nacional de Ingeniería, Lima, Peru, coraima.rivera.n@uni.pe, orcid.org/0009-0008-3629-0288 ; Student Researcher, Faculty of Civil Engineering, Universidad Nacional de Ingeniería, Lima, Peru, jesus.villar.v@uni.pe, orcid.org/0009-0008-8461-9711 ; Student Researcher, Faculty of Civil Engineering, Universidad Nacional de Ingeniería, Lima, Peru, mauricio.melgar.m@uni.pe, orcid.org/0009-0007-6491-4134 ; Professor, School of Civil Construction, Pontificia Universidad Católica de Chile, Santiago, Chile, zmgimenez@ing.puc.cl, orcid.org/0000-0001-9051-1434 }, abstract={Respect for People (RFP) is a crucial element in Lean Construction philosophy, along with continuous improvement. However, despite its importance, research on RFP is still limited. Therefore, the following article aims to identify good practices, benefits, and barriers generated by its implementation on the construction site. The research begins with a literature review, following the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) criteria. Subsequently, with the list of good practices, benefits, and barriers, nine lean experts were interviewed, validating the information obtained from the literature review. This process identified eleven good practices, eleven benefits of implementing RFP in construction projects, and nine barriers. The upcoming research will serve as a valuable contribution for professionals seeking to implement good practices of RFP on the construction site and researchers aiming to delve deeper into this concept. }, author_keywords={Respect for People, Lean Construction, benefits, barriers, good practices }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Shigaki2024, author={Shigaki, Jeferson Shin-Iti and Koskela, Lauri and Tezel, Algan and Pedo, Barbara }, editor={ }, title={Exploration of Lean Construction in Japan and Its Paradoxical Stance}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1219-1231}, url={http://www.iglc.net/papers/details/2272}, doi={10.24928/2024/0193}, affiliation={Senior Researcher, Research & Development Institute, Takenaka Corporation, Inzai, Chiba, Japan, shigaki.jeferson@takenaka.co.jp, orcid.org/0000-0003-4513-6334 ; Adjunct Professor, Building Lifecycle Research Group, Tallinn University of Technology, Tallinn, Estonia, lauri.koskela@taltech.ee, orcid.org/0000-0003-4449-2281 ; Associate Professor, Department of Civil Engineering, University of Nottingham, Nottingham, UK, algan.tezel@nottingham.ac.uk, orcid.org/0000-0003-3903-6126 ; Ph.D. Researcher, Innovative Design Lab (IDL), University of Huddersfield, Huddersfield, UK (Lean Manager, Arcadis UK, Manchester, UK), barbara.pedo2@hud.ac.uk, orcid.org/0000-0002-6520-0981 }, abstract={Japanese construction, appraised for its high quality and production efficiency, holds virtues that Lean advocates have long admired in the Toyota Production System. However, Japanese building construction academia and industry organizations have remained disconnected from the mainstream IGLC community until recently. Therefore, its current state is insufficiently understood overseas. This study has employed a literature review, including resources in English and Japanese languages, and gathered first-hand testimonials to shed light on such a gap. This paper identified practices and routines from Japanese construction sites that could be incorporated into the Lean Construction repertoire, and identified points from which Japan could learn, such as the role of dynamic ecosystems in the birth and expansion of the Lean Construction movement and the presence of heavy-weight champions who nurtured conduit leaders. Japanese constructors have aspired to pull their engineering strength to the next level and combine it with innovative management practices, including incorporating good ones learned from overseas. That is where the role of Lean resides. Lean may help fill the gap of converting tacit knowledge into structured knowledge, increasing transparency, smoothing the transmission of know-how, creating more efficient project deliveries, and turning itself into a more attractive business. }, author_keywords={Lean Construction, Japan, Theory, Toyota Production System, Ecosystem. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Fernandes2024, author={Fernandes, Luara L. A. and Hastak, Makarand and Costa, Dayana B. }, editor={ }, title={Assessing Social, Technical, and Operational Maturity Dimensions for Digital Transformation in the Construction Phase}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1232-1243}, url={http://www.iglc.net/papers/details/2273}, doi={10.24928/2024/0214}, affiliation={PhD Candidate in Civil Engineering, Federal University of Bahia, Salvador, Brazil. Visiting Scholar, Lyles School of Civil Engineering, Purdue University, West Lafayette, United States. E-mail: luara.fernandes@gmail.com. ORCID: orcid.org/0000-0003-4041-8025. ; Professor and Head, Division of Construction Engineering and Management, Lyles School of Civil Engineering, Purdue University, West Lafayette, United States. Email: hastak@purdue.edu. ; Associate Professor, School of Engineering, Department of Structural and Construction Engineering, Federal University of Bahia, Salvador, Brazil. E-mail: dayanabcosta@ufba.br. ORCID: orcid.org/0000-0002-1457- 6401 }, abstract={The importance of digital transformation (DT) has risen significantly in the past few years in several industry sectors, including construction. Some potential benefits of DT in construction include improvements in productivity, efficiency, safety, quality, and collaboration. However, fully embracing DT opportunities involves committed efforts in Key Project Areas (KPAs), and identifying these areas is still challenging. Therefore, this work aims to assess social, technical, and operational maturity dimensions for digital transformation in the construction phase. These dimensions are the KPAs construction managers should focus on throughout the construction environment DT process. A questionnaire was administered to 54 construction professionals from industry and academia. Data collected was analyzed using ranking analysis from the Relative Importance Index (RII) calculation. Results revealed that the participants did not rank technical aspects as the most significant; rather, these aspects were regarded with slightly less importance than other dimensions. The balance among social, technical, and operational factors in the ranking indicates that construction professionals recognize the insufficiency of technology implementation alone for driving significant changes; instead, human resources must lead the process improvement with the support of digital technologies. These findings align with Industry 5.0 and Lean Construction concepts, reflecting some synergies between them. }, author_keywords={Digital transformation, Construction phase, Industry 5.0, Lean construction. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Schöttle2024, author={Schöttle, Annett and Behme, Fabian }, editor={ }, title={A Critical Analysis of Choosing by Advantages Implementation in the Tendering Procedure Based on Eu Directive and German Legislation}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1244-1254}, url={http://www.iglc.net/papers/details/2274}, doi={10.24928/2024/0223}, affiliation={Dr.-Ing., CBA & Lean Expert, Munich, Germany, & Founder and Co-Director, CollabDecisions, annett.schoettle@web.de, orcid.org/0000-0001-6001-7320 ; Dr., Team Lead Contract & Claims Management, Munich Main Station, DB InfraGO, Munich, Germany, Fabian.Behme@deutschebahn.com, orcid.org/0009-0000-6130-9050 }, abstract={The Choosing by Advantages (CBA) Tabular method is a decision-making method that differentiates between alternatives based on the importance of advantages. By doing so, cost-related factors are excluded from the table to better understand the value of each alternative. After evaluating the value, the cost/price of each alternative is analyzed in relation to the value. This is a crucial rule to avoid overestimating cost/price and underestimating the value of an alternative. In the public tendering procedure, price is usually the only factor or the main factor used to decide between proposals. As other authors have already pointed out, this leads to speculative bidder behavior that might be rewarded. Using CBA requires a change in thinking, but it will be beneficial in truly understanding the differences between proposals. Therefore, this paper examines the use of CBA in the tendering procedure based on EU Directives and German legislation. It was found that it is possible to implement CBA in the current tendering procedure without violating the principles of CBA. However, the adjustment needed to apply CBA within the current regulations clearly goes against what CBA intends. Therefore, we suggest changing the current reactive tendering procedure to an active decision-making process. This paper does not provide a final answer but aims to open the discussion. }, author_keywords={Choosing by Advantages (CBA), legislation, public, tendering. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Ebbs2024, author={Ebbs, Paul J. and Ward, Steven A. }, editor={ }, title={ISO 18404: A Model for Lean Transformation in an Alliance}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1255-1267}, url={http://www.iglc.net/papers/details/2275}, doi={10.24928/2024/0225}, affiliation={Technical Director, T&I, Roads, WSP in the UK, paul.ebbs@wsp.com, orcid.org/0009-0003-5630-1726 ; Managing Director, Lean Construct Ltd., UK, steve@leanconstruct.co.uk, orcid.org/0000-0002-5291-7246 }, abstract={The literature and case studies reporting lean transformation in the construction/infrastructure sector are rare. This study’s objective is to examine whether the Lean Standard, ISO 18404 provides a useful model for lean transformation. By Case Study and Participatory Action Research, the deployment of ISO 18404 and certification journey of a UK highway alliance (the Alliance) is reported, structured around four Themes for lean transformation. Findings are supported by the latest literature along with a quantitative and qualitative survey with those involved in 18404 deployment (n=35/58). The survey data was thematically analysed and is largely articulated through the four Themes for lean transformation. Whilst ISO 18404 is imperfect, it remains that ISO 18404 provides a useful model for lean transformation and can assist with embedding a culture of sustainable continuous improvement in an Alliance. }, author_keywords={ISO 18404, Alliancing, Lean Transformation, Lean Leadership, Continuous Improvement }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Vaidyanathan2024, author={Vaidyanathan, Kalyan and Kannimuthu, Marimuthu and Varghese, Koshy }, editor={ }, title={Institute for Lean Construction Excellence Lean Maturity Model (ILMM) – a Lean Maturity Model for Indian Construction}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1268-1279}, url={http://www.iglc.net/papers/details/2276}, doi={10.24928/2024/0229}, affiliation={Director, Business Development Bentley Systems India Ltd., Urban Square Building, Elango Nagar, Perungudi, Chennai, Tamil Nadu 600041, India, kalyanv71@gmail.com, orcid.org/0000-0001-7006-6329 ; Technical Secretary, Institute of Lean Construction Excellence, SP Centre, 41/44 Minoo Desai Marg, Colaba, Mumbai 400005, India, marimuthukan@gmail.com, orcid.org/0000-0002-8158-1868 ; Professor, Building Technology and Construction Management, Civil Engineering Department, Indian Institute of Technology, Madras, Chennai 600036, koshy@iitm.ac.in, orcid.org/0000-0001-7457-9578 }, abstract={In the construction industry, sustained implementation of lean practices is vital for enhancing efficiency and outcomes for projects and organisations. Having a maturity model is one way to assess sustained implementation. This paper identifies the need and describes a comprehensive maturity model framework to gauge and improve project and organisational lean maturity in the Indian construction context – Institute for Lean Construction Excellence Lean Maturity Model (ILMM). The model introduces a distinctive 4x3 matrix, with four levels – Bronze, Silver, Gold, and Platinum – each further divided into three sublevels – Low, Medium, and High. The assessment is done on five dimensions – top management support, process, people & partners, methods & tools, and technology. Field data collection has been done on two projects to see if data on the proposed assessment dimensions can be gathered and an appropriate rating provided to the project along with guidelines on how to improve the maturity. This research advances lean construction practices by providing a practical framework for continuous improvement and organisational excellence tailored to local construction contexts. In the next phase, the authors plan to do a more elaborate assessment across a broader range of projects and modify the ILMM framework as needed based on their experience. }, author_keywords={Lean Construction, Lean Maturity Model, Lean Culture, Continuous Improvement, Assessment Framework. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Forcael2024, author={Forcael, Eric }, editor={ }, title={Lean Construction 4.0 and Society 5.0, How Close Are They?}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1280-1292}, url={http://www.iglc.net/papers/details/2277}, doi={10.24928/2024/0237}, affiliation={Professor, College of Engineering, Architecture and Design, Universidad San Sebastián, Concepción, Chile, eric.forcael@uss.cl, orcid.org/0000-0002-3036-4329 }, abstract={The rapid advent of technological progress has triggered many industries to modify how they perform their tasks. The construction industry has not been immune to this reality. In this sense, Lean Construction 4.0 was recently born from the fusion of Lean principles and Construction 4.0. Similarly, concepts such as Industry 5.0 and Society 5.0 have also emerged in recent years, intending to put human beings at the center of companies’ work. Thus, this article addresses how close Lean Construction 4.0 and Society 5.0 are. After analyzing both approaches, it is feasible to say that the relationship between both views is sensitively close, specifically under a human-centered approach and, therefore, it cannot be ignored as a process that also deals with the transformation of society through technology. }, author_keywords={Lean Construction 4.0, Society 5.0, Human-centered approach, People-Process-Technology. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Stevens2024, author={Stevens, Matt and Poshdar, Mani }, editor={ }, title={Lean Construction Enterprise Management: The Value and Potential of the Merit Game Simulation}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1293-1302}, url={http://www.iglc.net/papers/details/2278}, doi={10.24928/2024/0102}, affiliation={Senior Lecturer, School of Engineering, Design, and Built Environment. Western Sydney University, Kingswood, New South Wales, Australia. Matt.Stevens@westernsydney.edu.au, orcid.org/0000-0003-2301-1311 ; Senior Lecturer, Programme Director Built Environment AE/CE/BEngTech (BConstruction) School of Future Environments. The University of Auckland, Auckland, New Zealand, mani.poshdar@aut.ac.nz orcid.org/0000-0001-9132-2985 }, abstract={A Lean Enterprise Construction-aligned learning game is an opportunity to meet the industry’s needs and wants. Competitive Simulation can offer such an alignment by using an online system as a medium to instruct. Learning three critical components: vocabulary, concepts, and processes, as well as game-based learning, allows students to acquire knowledge and skills through an interactive and entertaining learning experience to achieve the purpose of real-time teaching. As a result, many educators have adopted gamification in various disciplines in the tertiary sector to enhance learning and teaching. This paper will discuss applying the MERIT game to Lean Construction Learning through a case study within a leading Australian university. The case study incorporates the Merit Game and relevant organisational management content into an undergraduate construction management program. Its focus is Lean Enterprise principles and concepts. Overall, students reported a positive learning experience with higher-order learning outcomes while identifying good practices incorporated into future delivery programs. The case study findings will inform academics and training professionals about the potential of the MERIT game, if tailored, for teaching Lean Construction at the enterprise level. }, author_keywords={Gamification, Online Simulation, Project Management, Construction Portfolio Management }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Prabaharan2024, author={Prabaharan, Ragavi and Devkar, Ganesh and Rybkowski, Zofia K. and Kannimuthu, Marimuthu }, editor={ }, title={The Repair-Co Game: A Roadmap to Demonstrate the Importance of Problem-Solving Capabilities of Lean Tools}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1303-1313}, url={http://www.iglc.net/papers/details/2279}, doi={10.24928/2024/0211}, affiliation={Senior Research Associate, Department of Research and Development, URC Construction (P) Ltd, India, +919788933592, ragavi.prabaharan@urcc.in, orcid.org/0000-0002-2901-7047 ; Sr. Associate Professor, Faculty of Technology, CEPT University, Ahmedabad – 380009, India +919099010303, ganesh.devkar@cept.ac.in, orcid.org/0000-0002-5482-122 ; Associate Professor, Department of Construction Science, Texas A&M University, College Station, TX, USA, o: (979) 845-4354, zrybkowski@tamu.edu, orcid.org/0000-0002-0683-5004 ; 4Technical Secretary, Institute for Lean Construction Excellence (ILCE), India, +9173050 40838, technical.Secretary1@ilce.in, orcid.org/0000-0002-8158-1868 }, abstract={Lean Construction facilitators use the Repair-Co Game to introduce new stakeholders to the need for Lean. The game heightens participant awareness of the futility of impulsive finger-pointing to individual workers when an existing management system may instead be principally responsible for a company’s inability to reach its expressed goals. Although this current gaming approach has been shown to be effective, the authors of this paper observed that the Repair-Co Game can also be expanded to introduce players to the usefulness of Lean tools that can identify root causes and effective countermeasures. These tools include the Ishikawa Fishbone Diagram, Pareto Chart, 5 Whys Root Cause Analysis, Big Room Meetings, and Collective Kaizen, which are implemented during Big Room meetings. This expanded version of the Repair-Co Simulation has been tested with 35 graduate students at Texas A&M University, 45 students at CEPT University, and 33 members of the URC construction company. Despite the different locations of the test grounds and make-up of players, results from initial experimental sessions have been shown to be remarkably similar in some ways but also different in others, demonstrating the important nuances of an individual context. Qualitative feedback from participants demonstrate the potential of the game in helping participants solve problems at their root cause. }, author_keywords={Lean Simulations, Repair-Co Game, Ishikawa Fishbone (Cause-and-Effect) Diagram, Pareto Chart, 5-Whys Root Cause Analysis, Continuous Improvement (PDCA). }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Martinez2024, author={Martinez, Eder and Pfister, Louis and Alarcón, Luis F. }, editor={ }, title={Designing an Effective Training Program for Systematic Lean Construction Implementation}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={1314-1323}, url={http://www.iglc.net/papers/details/2280}, doi={10.24928/2024/0234}, affiliation={Professor, School of Architecture, Civil Engineering and Geomatics, University of Applied Sciences and Arts Northwestern Switzerland (FHNW), Hofackerstrasse 30, 4132 Muttenz, Switzerland, eder.martinez@fhnw.ch, orcid.org/0000-0001-7918-9421 ; Head of Lean Construction Division Civil Engineering, Implenia AG, Thurgauerstrasse 101A, Glattpark (Opfikon) 8152, Switzerland ; Professor, Dept. of Construction Engineering and Management, Pontificia Universidad Católica de Chile, lalarcon@ing.puc.cl, orcid.org/0000-0002-9277-2272 }, abstract={Training and education stand out as pivotal factors for the successful implementation of lean construction. Despite their critical role, current literature lacks comprehensive guidance on the development and implementation of lean training programs within the context of construction organizations. This paper aims to addresses this gap by presenting the case study of a multinational construction service provider developing and implementing a training program aimed at fostering a broader and sustainable integration of lean construction practices within the organization. The analysis includes the insights and perspectives of 95 trainees, gathered through an electronic survey. The results show a positive evaluation of different components of the program after 2 years of implementation. The case study emphasizes the significance of a collaborative approach to find an adequate balance of standardization and flexibility required to effectively deploy a unified training program across diverse local contexts and construction operations within the organization. The valuable insights derived from this case study serve as a resource for both researchers and practitioners, providing practical guidance for those looking to implement training programs. Furthermore, it supports in identifying best practices and potential pitfalls that warrant careful consideration in similar initiatives. }, author_keywords={Lean construction, Training, Education program. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Fischer2024, author={Fischer, Anne and Baumgartner, Philipp and Tommelein, Iris D. and Nübel, Konrad and Fottner, Johannes }, editor={ }, title={Application of the Work Density Method to in-Situ Pile Production in Heavy Civil Engineering}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={261-272}, url={http://www.iglc.net/papers/details/2281}, doi={10.24928/2024/0103}, affiliation={PhD Student, Chair of Materials Handling, Material Flow, Logistics, TUM School of Engrg. and Design., Techn. Univ. of Munich, Germany, +49 89 289 15932, anne.fischer@tum.de, orcid.org/0000-0002-2106-3735 ; Graduate Student, Chair of Materials Handling, Material Flow, Logistics, Dept. of Mech. Engrg., Techn. Univ. of Munich, Germany, philipp.baumgartner@tum.de ; Distinguished Professor, Civil and Envir. Engrg. Dept., Director, Project Production Systems Laboratory (P2SL), University of California, Berkeley, CA 94720-1712, USA, +1 510 643-8678, tommelein@berkeley.edu, orcid.org/0000-0002-9941-6596 ; Professor, Chair of Construction Process Management, TUM School of Engrg. and Design, Techn. Univ. of Munich, Germany, +49 89 289 22410, konrad.nuebel@tum.de, orcid.org/0000-0002-2863-1360 ; Professor, Chair of Materials Handling, Material Flow, Logistics, Dept. of Mech. Engrg., Techn. Univ. of Munich, Germany, +49 89 289 15918, j.fottner@tum.de, orcid.org/0000-0001-6392-0371 }, abstract={The Work Density Method (WDM) is used in takt planning for defining zones with equal workload. To date, this method has been applied mainly to building construction. This paper investigates the WDM’s applicability to equipment-driven processes in heavy civil engineering, specifically to the in-situ production of foundation piles for a highway infrastructure project. Two existing computer-based programs that support the application of the WDM, WoLZo and ViWoLZo, were used to find a suitable grid size based on data from a real-world project. The results show the potential of using the WDM (1) to define zones with equal workloads, given that pile groups are irregularly distributed over the construction site space, (2) to compare different scenarios based on work density as a metric (e.g., scenarios with different uses and sequencing of equipment), and (3) to derive a takt time and process duration when using multiple pieces of equipment that must coordinate their efforts and work in sync. Compared to the building construction application, the heavy civil engineering application reveals new requirements when using the WDM and takt planning in general, regarding the geometrical and logistical needs of equipment-driven operations that constrain how zones can be defined. }, author_keywords={Production system design, takt planning (TP), Work Density Method (WDM), heavy civil engineering, work structuring, workload leveling, foundation piles, infrastructure project. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Toledo2024, author={Toledo, Mauricio J. and Sánchez, Brian E. }, editor={ }, title={Improving Reasons for Non-Compliance Documentation Using UAV on Construction Projects}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={273-282}, url={http://www.iglc.net/papers/details/2282}, doi={10.24928/2024/0106}, affiliation={Assistant Professor, Head of Civil Engineering Department, Universidad Andres Bello, Chile, mauricio.toledo@unab.cl, orcid.org/ 0000-0002-3903-7260 ; Student, Civil Engineering Department, Universidad Andres Bello, Chile, b.snchezramos@uandresbello.edu }, abstract={Most Last Planner System® (LPS) research focused on finding the Reasons for Non-Compliance (RNC) and their origins come from indirect means such as perception surveys, therefore, registered RNC are based on opinions and not facts. This situation causes an incorrect categorization of RNC, and consequently, these RNC remain unsolved and they would probably happen again. The aim of this research is to create a formal registry of RNC on construction building projects during rough works for improving RNC documentation, using photos taken by an unmanned aerial vehicle (UAV). We performed 3 case studies: one using a traditional planning method, and two other projects using partial LPS implementation. We took aerial photos with the UAV to register unfulfilled Work Commitments (WC), their RNC and to propose a Corrective Action (CA) that would solve the RNC. This registry is supported by analyzing the RNC with an Ishikawa Diagram and using the 5 Why 2 How method (5W2H) to systematically propose a CA. We documented all this information in a “RNC Form” for each RNC detected. We took photos once a week for the project with a traditional planning method and twice a week for the projects with partial LPS implementation. We created 22 RNC Forms, which we shared with the project team professionals to receive feedback. The results are a methodology that accounts for a standardized process on how to carry out the UAV flights, photo taking and subsequently, how to document the RNC creating a RNC Form. This shows a more objective and visual record of the RNC, from which a process of continuous improvement is encouraged, by proposing a CA that solves the identified problem. The methodology and the RNC Form were validated with surveys on a Likert scale, from 1 (strongly disagree) to 4 (strongly agree). We interviewed 7 construction field professionals from the three projects. The composition of the RNC Form and the future use of the proposed methodology reached a score of 4.0 and 3.9 respectively; therefore, they were highly valued by the field professionals. }, author_keywords={Reasons for non-compliance, RNC, UAV, LPS, corrective action. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Riekki2024, author={Riekki, Jaakko and Seppänen, Olli and Lehtovaara, Joonas and Peltokorpi, Antti }, editor={ }, title={Quantitative Indicators in Takt Production Control: An Empirical Analysis}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={283-293}, url={http://www.iglc.net/papers/details/2283}, doi={10.24928/2024/0107}, affiliation={Doctoral Candidate, Department of Civil Engineering, Aalto University, Finland, jaakko.riekki@aalto.fi, orcid.org/0000-0002-0306-2165 ; Associate Professor, Department of Civil Engineering, Aalto University, Finland, olli.seppanen@aalto.fi, orcid.org/0000-0002-2008-5924 ; Development Manager, A-insinöörit Construction Management joonas.lehtovaara@ains.fi, orcid.org/0000-0002-4761-3811 ; Assistant Professor, Department of Civil Engineering, Aalto University, Finland, antti.peltokorpi@aalto.fi:, orcid.org/0000-0002-7939-6612 }, abstract={Takt production has improved lead times and stability of lean construction projects. There are several studies about takt planning but research on takt control is scant. Although some quantitative indicators have been proposed for assessing how well sites are able to follow the plan, there are no studies which have used these indicators on real projects on a work package and daily level of detail. This paper investigates through a case example how previously proposed quantitative indicators of takt control work on a detailed level. We also discuss how the indicators can be interpreted for understanding plan adherence, control actions, and improvement opportunities. Studying takt control aims to learn why and how production deviates from the plan and how management should act to get the intended production realized. Quantitative analysis with progress data and indicators calculated from them can be used to measure deviation from the plan and the performance of the production system. This paper shows how takt control can be analyzed with flow efficiency and punctuality indicators. Indicators reveal improvement opportunities in outlier trades and takt areas in flow efficiency, the relationship of product and operations flow and go-back work areas. }, author_keywords={Takt production, production control, quantitative indicators, progress tracking, improvement }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Riekki2024, author={Riekki, Jaakko and Lehtovaara, Joonas and Tommelein, Iris D. and Seppänen, Olli and Heinonen, Aleksi }, editor={ }, title={Revisiting the Takt Maturity Model After Three International Takt Forums}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={294-304}, url={http://www.iglc.net/papers/details/2284}, doi={10.24928/2024/0108}, affiliation={Doctoral Candidate, Department of Civil Engineering, Aalto University, Finland, jaakko.riekki@aalto.fi, orcid.org/0000-0002-0306-2165 ; Development Manager, A-Insinöörit Construction Management, joonas.lehtovaara@ains.fi, orcid.org/0000-0002-4761-3811 ; Distinguished Professor, Civil and Environmental Engineering Department, Director, Project Production Systems Laboratory, University of California, Berkeley, USA, tommelein@berkeley.edu, orcid.org/0000-0002-9941-6596 ; Associate Professor, Department of Civil Engineering, Aalto University, Finland, olli.seppanen@aalto.fi, orcid.org/0000-0002-2008-5924 ; Consultant, Vison, aleksi.heinonen@vison.fi, orcid.org/0000-0003-2027-9646 }, abstract={Takt production has gained wide interest as a change agent for systemic change in recent years. A maturity model for the adoption of takt production based on and validated with Finnish case projects was published in 2020. However, that maturity model has not been validated internationally and companies have continued their development of takt-based operations. In this paper, we suggest updates of the maturity model by reviewing the best practices presented in three international takt forums. We also validate the model using international case projects presented in the takt forums. Industry participants have taken routes to takt production implementation other than those assumed in the initial model. Some have advanced to levels that were not included in the original model. Our suggestions consist of adding four new requirements and modifying the descriptions of eight existing requirements. A modification to the description of one of the levels in the model and the model itself are also suggested. The contribution to knowledge is a new maturity model to use for benchmarking and as a roadmap for improvement of takt production. }, author_keywords={Takt production, maturity model, takt forum, driving change }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Reinbold2024, author={Reinbold, Ana and Lappalainen, Eelon and Uusitalo, Petri and Seppänen, Olli and Peltokorpi, Antti }, editor={ }, title={Implementing Digital Visual Management: A Case Study on Challenges and Barriers}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={305-315}, url={http://www.iglc.net/papers/details/2285}, doi={10.24928/2024/0112}, affiliation={Doctoral Candidate, Department of Civil Engineering, Aalto University, Finland, ana.reinbold@aalto.fi, orcid.org/0002-7774-7984 ; Doctoral Candidate, Department of Civil Engineering, Aalto University, Finland, eelon.lappalainen@aalto.fi, orcid.org/0000-0002-7573-344X ; Postdoctoral Researcher, Department of Civil Engineering, Aalto University, Finland, petri.uusitalo@aalto.fi, orcid.org/0000-0002-5725-906X ; Associate Professor, Department of Civil Engineering, Aalto University, Finland, olli.seppanen@aalto.fi, orcid.org/0000-0002-2008-5924 ; Associate Professor, Department of Civil Engineering, Aalto University, Finland, antti.peltokorpi@aalto.fi, orcid.org/0000-0002-7939-6612 }, abstract={The construction industry (CI) has an increasing interest in achieving better situational awareness (SA) in complex projects, by focusing on sharing real-time information among project participants, allowing decision-making based on the project development’s up-to-date situation and status. The implementation of digital visual management (DVM) tools as means of communication to increase SA in CI projects has the potential to simplify information dissemination. This paper identifies the challenges and barriers faced during the implementation of a DVM tool. The authors interviewed nine project management professionals who were part of the client organization in a complex infrastructure project of the western part of the Metro in Helsinki and Espoo, Finland. The findings show that the lack of digital tools for collecting and analyzing project data, the focus of the DVM on the top management, and the lack of trust among the actors involved in the project undermine the success of DVM implementation. Thus, digitalizing data collection, increasing trust among project participants, and disseminating information are crucial for successful DVM implementation. }, author_keywords={visual management, digital visual management, situational awareness, construction reporting }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Samaniego2024, author={Samaniego, Omar A. }, editor={ }, title={Unveiling the Hidden High Variability in Processes With Stable and Good PPC Results}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={316-327}, url={http://www.iglc.net/papers/details/2286}, doi={10.24928/2024/0118}, affiliation={Engr., Master, NEC-ECC PMA, VDC, PMP®, PMI-RMP®, Risk Management Program Director, Universidad Peruana de Ciencias Aplicadas, Quality Consulting Solutions Director, author and independent researcher, comercial@quality-consulting.org, osamaniego@pucp.pe, https://orcid.org/0000-0003-4352-2610 }, abstract={Despite high and stable Percentage of Plan Completed (PPC) values obtained in projects where Last Planner® System (LPS) was implemented, construction processes often conceal variability, undermining true completion. Likewise, LPS metrics rely on a deterministic approach for measuring the performance of processes without contrasting them with non-deterministic variables, which can provide a new perspective and new room for improvement. This is why, this paper introduces four new metrics – Percentage of Plan Completed+ (PPC+), Percentage of Plan Completed++ (PPC++), Percentage of Plan Completed+ based on random scheme (PPC+r), Rate of Waste (Rw), and Rate of Planning Assessment (Rpa) – to unveil hidden variability around activity daily schedule, rework, excess capacity, and planning. Further, utilizing statistical modeling to define the pioneering stochastic indicator Rpa, the study presents an important leap from traditional LPS deterministic metrics. Thus, by also conducting one survey among LPS practitioners on PPC conception and usage, it illuminates how seemingly stable estimated PPC values can misrepresent process performance. These metrics offer a transparent brand-new assessment way, revealing new opportunities for improvement aligned with lean principles. The study also provides foundation and directions for further research on hidden variability which can propel the current LPS approach. }, author_keywords={Lean construction, Last Planner® System, PPC, metrics, stochastic indicator. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Amaral2024, author={Amaral, Tatiana Gondim do and Filho, Renato Rafael Del Grosso and Pessoni, Rúbia Cristina de Souza and Barkokebas, Beda }, editor={ }, title={The Relationship Between Making-Do Waste and Good Management Practices in the Construction Industry: A Systematic Literature Review}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={328-340}, url={http://www.iglc.net/papers/details/2287}, doi={10.24928/2024/0122}, affiliation={Full Professor, Environmental and Civil Engineering Department, Federal University of Goiás, Brazil, tatianagondim@ufg.br, orcid.org/0000-0002-9746-4025 ; Master Student, Program in Production Engineering, Federal University of Goiás, Brazil, renato.del@discente.ufg.br, orcid.org/0000-0003-4033-7129 ; Master Student, Program in Production Engineering, Federal University of Goiás, Brazil, rubia@discente.ufg.br, orcid.org/0000-0001-5318-6820 ; Assistant Professor, Department of Construction Engineering and Management, Pontificia Universidad Católica de Chile, Santiago, Chile, bbarkokebas@uc.cl, orcid.org/0000-0002-0054-1320 }, abstract={The need within the construction market to increase control, performance, reduce waste and impacts on the environment is of utmost importance. In order to fully understand and contextualize the construction management process and help managers make decisions, this study aims to investigate studies through a systematic literature review which address the relationship between good management practices and losses from making-do within good construction practices. The search for articles was conducted in the Scopus, Science Direct and Web of Science databases. This diagnosis revealed the good management practices presented in the literature, which can be facilitating activities or good practices that reduce losses from making-do, guarantee compliance with the minimum requirements of the complete kit or the resilience of the process. The categories of knowledge gaps were structured into: Industry 4.0 and 5.0, Big Data, Multi-criteria decision making, Discrete event simulation, Resilience and Literature review. }, author_keywords={Making-do. Wastes, Lean construction, Reworking, Planning }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Amaral2024, author={Amaral, Tatiana Gondim do and Pessoni, Rubia Cristina de Souza and Filho, Renato Rafael Del Grosso and Galo, Nadya Regina and Luz, Neurielly Ribeiro da and Marcelino, Giovanna }, editor={ }, title={Methodology to Avoid the Occurrence of Making-Do Waste in Civil Construction}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={341-352}, url={http://www.iglc.net/papers/details/2288}, doi={10.24928/2024/0124}, affiliation={Full Professor, Environmental and Civil Engineering Department, Federal University of Goiás, Brazil, tatianagondim@ufg.br, orcid.org/0000-0002-9746-4025 ; Master Student, Program in Production Engineering, Federal University of Goiás, Brazil, rubia@discente.ufg.br, orcid.org/0000-0001-5318-6820 ; Master Student, Program in Production Engineering, Federal University of Goiás, Brazil, renato.del@discente.ufg.br, orcid.org/0000-0003-4033-7129 ; Assistant Professor, Universidade Federal Fluminense , Brazil, nadyagalo@hotmail.com, orcid.org/0000-0001-6641-5610 ; Student, School of Environmental and Civil Engineering, Federal University of Goiás, Brazil, neuriellyribeiro@hotmail.com, orcid.org/0000-0002-2434-4348. ; Student, School of Environmental and Civil Engineering, Federal University of Goiás, Brazil,ggiovannagrm@discente.ufg.br , orcid.org/0000-0002-2190-0513. }, abstract={The scenario of the Civil Construction industry is highlighted by the very high level of production waste, waste generation, and non-value-added activities. Among the array of existing waste types, one significant category is making-do waste, which gives rise to the following consequences: reduced productivity, reduced worker safety and motivation, reduced quality, and rework. The proposed model aims to contribute to efficiency and competitiveness in civil construction by filling gaps in loss management through making-do. Therefore, this study proposes a methodology based on establishing guidelines aimed at avoiding waste due to improvisation by addressing their root causes. To this end, we aimed to analyze a database containing a survey specifically focused on making-do waste at construction sites. A sample of 420 different kinds of waste was obtained, and 47 different guidelines applied to different work stages were created. The guideline with the highest number of occurrences was “Perform verification and inspection from the FVS before, during and after the execution of the service,” while the most substantial number of propositions referred to waste whose missing prerequisites were “Information” and “Labor." When applied to the proposed methodology, these guidelines can become a strategic tool combined with production management that is aimed at minimizing waste. }, author_keywords={Making-do waste; Guidelines; Production management; Civil Construction. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Hamaidi2024, author={Hamaidi, Munther and Ghandour, Nour and Hadi, Mohammad Abdel and Naser, Ayman }, editor={ }, title={The Influence of Preconstruction Phase and Lean Construction Implementation on Project Performance}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={353-364}, url={http://www.iglc.net/papers/details/2289}, doi={10.24928/2024/0133}, affiliation={Master, Civil Engineering Department, Qatar University, Qatar, Mh1003137@qu.edu.qa ; Lean Lead, China Railway Construction Corporation Limited, Doha, Qatar, Nourghndr@hotmail.com ; Lean Specialist, WSP International Consultant, Doha, Qatar, Mohammad.AbdelHadi@wsp.com ; Lecturer, Civil and Environmental Engineering Department, Qatar University, Qatar, an1401569@qu.edu.qa , https://orcid.org/0000-0002-0670-9200 }, abstract={Effective design management during the preconstruction phase has significant effects on project performance within the Architecture, Engineering, and Construction (AEC) sector. This research examines critical factors that impact the design outcomes at the preconstruction phase in the construction of infrastructure projects which affect the overall project performance. Using a sequential hybrid research approach that combines qualitative interviews and quantitative surveys, this study identifies ten crucial factors that influence project performance during the preconstruction phase. The relative importance index (RII) method is used to prioritise these factors, emphasising the most influential areas for enhancement. This study investigates the use of lean construction (LC) principles and tools to minimize the impact of these factors. These tools include integrated project delivery (IPD), building information modelling (BIM), last planner system (LPS), value stream mapping (VSM), target value design (TVD), set-based design (SBD), and choosing by advantage (CBA). Authors propose a comprehensive Lean Construction-based Risk Mitigation (LC-RM) framework to integrate these methodologies and enhance the design process during the preconstruction phase, thereby improving overall project performance. This research makes a valuable contribution to the field of construction management by providing practical recommendations for effective decision-making and lean practices during the preconstruction phase. It serves as a preliminary step towards improving construction management processes and has the potential to be further explored in future studies. }, author_keywords={Lean construction, Design management, Preconstruction, Risk mitigation, Critical factors, Infrastructure construction project }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Lagos2024, author={Lagos, Camilo I. and Herrera, Rodrigo F. and Cawley, Alejandro Mac and Alarcón, Luis F. }, editor={ }, title={An AI Copilot for Make-Ready Planning in the Last Planner System}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={365-376}, url={http://www.iglc.net/papers/details/2290}, doi={10.24928/2024/0155}, affiliation={PhD Candidate, School of Engineering, Pontificia Universidad Católica de Chile, CONXAI Technologies GmbH, colagos@uc.cl, orcid.org/0000-0002-0648-0039 ; Assistant Professor, School of Civil Engineering, Pontificia Universidad Católica de Valparaíso, rodrigo.herrera@pucv.cl orcid.org/0000-0001-5186-3154 ; Associate Professor, Dept. of Industrial Engineering, Pontifica Universidad Católica de Chile, amac@ing.puc.cl, orcid.org/0000-0002-4848-4732 ; Professor, Dept. of Construction Engineering and Management, Pontifica Universidad Católica de Chile, lalarcon@ing.puc.cl, orcid.org/0000-0002-9277-2272 }, abstract={Many challenges in partial Last Planner System implementations can be attributed to the underutilization of Make-Ready Planning, although other factors also play a role. Failing to identify constraints in time to prevent Reasons for Noncompliance (RNCs) decreases short and long-term performance. Reducing the complexity of identifying, registering, and managing constraints systematically was found as a critical improvement opportunity. This research proposes the use of an artificial intelligence (AI) recommender system to facilitate constraint identification and RNC prevention. The system employs Large Language Model (LLM) embeddings to represent new task descriptions and find the most similar previously seen tasks. Subsequently, it fetches the set of constraints and RNCs belonging to these past tasks, represented in the embedded system, and uses it to produce three prioritized recommendations. Finally, the selected recommendations are categorized using Machine Learning Classification. The model was able to provide three sound recommendations for 69% of tasks and yielded a 60% relative improvement compared to a rule-based frequent pattern probabilistic system. The results pose three benefits for LPS practitioners: Reducing the effort needed to identify and register constraints, alerting probable RNCs needing to be prevented, and enriching data registration, allowing it to be used in future knowledge management. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Bellaver2024, author={Bellaver, Gustavo Bridi and Etges, Bernardo Martim Beck da Silva and Rego, Lauro Henrique Alves and Staudt, Luis }, editor={ }, title={Takt and Pull Zones in the Construction of Logistics Warehouses}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={389-400}, url={http://www.iglc.net/papers/details/2291}, doi={10.24928/2024/0173}, affiliation={1M.Sc. Civil Engineer, Project Manager, Climb Consulting Group, Porto Alegre, Brazil, gustavo@climbgroup.com.br, https://orcid.org/0000-0002-4937-5861 ; PhD Candidate, M.Sc. Eng., Founding-Partner at Climb Consulting Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil, bernardo@climbgroup.com.br, orcid.org/0000-0002-3037-5597 ; 3Civil Engineer, Quality Control Coordinator, LOG Comertial Properties, Belo Horizonte, Brazil, lauro.henrique@logcp.com.br, https://orcid.org/0000-0002-9519-2644 ; PhD Civil Engineer, Consultant, Climb Consulting Group, São Leopoldo, Brazil, luis@climbgroup.com.br, orcid.org/0000-0002-2398-2102 }, abstract={This article will describe how the application of lean philosophy tools in the construction of logistics warehouses can offer new perspectives on project planning, promoting clearer and more visual communication, collaboration, and decision-making processes. this article investigated the use of takt and pull planning methods for the development of an integrated management system for logistics warehouses located in different Brazilian cities. Takt planning of scheduled activities decreased waiting times, leading to a reduction of approximately 8% in the execution time of construction works. Other benefits included greater team engagement and participation in activity planning and sequencing. Two takt zones (repetitive elements) and one pull zone (non-repetitive elements) were demarcated at each construction site, which were planned using line balancing as a unifying element. This strategy facilitated visual management by the field team, ensuring that the entire planning process flowed through the actors actively involved in carrying out the work. In a questionnaire-based survey, construction teams reported great improvements in planning, work comprehension, and coordination between work fronts, as well as improvements in visual management and collaboration. The responses indicated a notable shift in how the field team approached planning and conceptualized their work and demonstrated that the incorporation of takt and pull planning concepts was essential for achieving these results. }, author_keywords={Last Planner System, Lean construction, Logistics warehouses, Pull planning, Survey, Takt planning }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{León2024, author={León, William and Guevara, Jose and García-López, Nelly }, editor={ }, title={Exploring the Limitations and Opportunities of Industrialized Construction in Colombia From a Lean Perspective}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={401-415}, url={http://www.iglc.net/papers/details/2292}, doi={10.24928/2024/0174}, affiliation={Ph.D. research assistant, Civil and Environmental Engineering Department, Universidad de los Andes, Bogotá, Colombia, wm.leon10@uniandes.edu.co, https://orcid.org/0000-0002-2533-853X ; Associate Professor, Civil and Environmental Engineering Department, INGECO research group director, Universidad de los Andes, Bogotá, Colombia, ja.guevara915@uniandes.edu.co, https://orcid.org/0000-0002-3485-9169 ; Assistant Professor, Civil and Environmental Engineering Department, INGECO research group, Universidad de los Andes, Bogotá, Colombia, ne-garci@uniandes.edu.co, https://orcid.org/0000-0001-9053-0897 }, abstract={Despite the significant impact that industrialized construction (IC) has on the project production chain and its clear influence on productivity levels across the industry, multiple limitations hinder its suitable implementation worldwide. Existing research has identified synergies between the implementation of Lean Principles (LP) and the adequate implementation of IC processes. However, most of these studies have been carried out in markets with a high maturity and implementation levels of both IC and LP. This paper aims to explore the synergies between the implementation of LP and opportunities for improvement for the effective implementation of IC in Colombia. This article presents a qualitative analysis of twenty semi-structured interviews with construction professionals from some of the largest construction companies in Colombia. The analysis revealed that despite growing interest in applying IC by leading companies in Colombia, the current implementation of IC principles is still low. Additionally, the application of LP such as continuous improvement, variability reduction, value generation, and waste reduction are identified as key enablers for IC. }, author_keywords={Industrialized Construction, Lean Principles, Productivity, Developing Countries, Semi-structured Interviews, and Literature Review. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Pedersen2024, author={Pedersen, Kristian Birch and Stefankovics, Glória and Nachev, Stefan Plamenov and Wandahl, Søren }, editor={ }, title={Quantifying and Planning Carbon Emissions in Construction With Location-Based Scheduling}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={416-427}, url={http://www.iglc.net/papers/details/2293}, doi={10.24928/2024/0175}, affiliation={M.Sc. (CivEng), Master of IT, PhD, Part-time Lecturer, Department of the Built Environment, Aalborg University, CEO and founder of Exigo A/S, Denmark, kbp@exigo.dk, https://orcid.org/0000-0002-4400-2046 ; B.Sc. (ATCM), Research assistant, Department of Civil & Architectural Engineering, Aarhus University, and Exigo A/S, Denmark, gs@exigo.dk, https://orcid.org/0009-0003-6400-4182 ; M.Sc. (CivEng), Specialist, Exigo A/S, Denmark, spn@exigo.dk ; Professor, Department of Civil & Architectural Engineering, Aarhus University, Denmark, swa@cae.au.dk, https://orcid.org/0000-0001-8708-6035 }, abstract={Many countries focus on limiting greenhouse gas (GHG) emissions, such as carbon dioxide, which also impacts the construction industry. The most forward-thinking countries have already enforced regulations on the maximum allowed emission from new buildings. Regarding building lifecycle stages after EN15978, the regulations primarily target product and usage stages, neglecting construction process emissions. This oversight is concerning as material innovations reduce product emissions, shifting the need for optimization to the construction stage. This study quantifies construction emissions, optimizing GHG during construction using the Location-Based Management System (LBMS) method. It incorporates construction-related emissions and uses a Location-Based Schedule, calculating anticipated kilowatt-hours (kWh) usage per location with data from various sources. Tested on three cases—residential building, office renovation, and medical facility—the method shows varied results based on project size, complexity, and LBMS introduction time. Findings indicate a potential 42% CO2 reduction in the scenario with the longest construction time. The study identifies site emission rates surpassing the 2023 limit over 30 years, underscoring the importance of comparing planned and realized schedules. Given climate regulations until 2050, the research deems the quantification method crucial for accurately addressing construction site emissions. }, author_keywords={Location-based Management System (LBMS), Takt Planning (TP), environment, greenhouse gas emissions (GHG), planning }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Vieira2024, author={Vieira, João P. P and Etges, Bernardo M. B. S. and Vasconcelos, Fernando P. and Bellaver, Gustavo B. and Nogueira, Hugo R. C. }, editor={ }, title={Synergy Between LPS and Slack: A Case Study in Brazilian Horizontal Housing Developments}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={428-441}, url={http://www.iglc.net/papers/details/2294}, doi={10.24928/2024/0176}, affiliation={M.Sc. Eng., Lean Consultant at Climb Consulting Group, Porto Alegre, Brazil, joao@climbgroup.com.br, orcid.org/0000-0003-0292-2570 ; PhD Candidate, M.Sc. Eng., Founding-Partner at Climb Consulting Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil, bernardo@climbgroup.com.br, orcid.org/0000-0002-3037-5597 ; Coordenador de Assembly At Spotlar, Florianópolis, Brazil, fernandopereiravasconcelos@gmail.com ; M.Sc. Civil Engineer, Project Coordinator, Climb Consulting Group, Porto Alegre, Brazil, gustavo@climbgroup.com.br, https://orcid.org/0000-0002-4937-5861 ; Construction Coordinator at FGR Incorporações SA, Goiania, Brazil, eng.hugocavalcante@gmail.com, https://orcid.org/0009-0001-6543-9052 }, abstract={Construction projects are remarkably unique, given the specific nature in which their production processes are organized and the high levels of variability and uncertainty that permeate their entire life cycle. Several initiatives can be implemented to mitigate the effects associated with unpredictability in construction projects. The Last Planner System has emerged as a valuable tool to provide greater confidence in the planning of construction projects. Another practice that has been increasingly adopted in the sector is the use of buffers. Despite the incipient perception that buffers may be associated with waste, studies conducted in airports and logistics centers have suggested their use as a valuable ally in combating uncertainties and protecting the production system. Research also points to the combined use of buffers with pull planning to reduce the effects of variability. In view of the foregoing, this study aimed to investigate the use of slack practices together with the long-, medium-, and short-term plans of the Last Planner System. The investigation used as a reference the following classifications of time off practices mapped in the literature: Redundancy, work-in-progress and margins of manoeuvre. The research was based on a case study of Brazilian horizontal housing developments. The main finding highlights the synergy between the categories of time off practices found and the objectives established by each of the horizons of the Last Planner System. Furthermore, other dimensions of analysis, such as logistics, supplies, security, may arise due to the nature of the project typology, and the need for practices that mitigate the uncertainties inherent in the execution of these projects. }, author_keywords={Lean Construction, slack, last planner system. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Power2024, author={Power, William and Sinnott, Derek and Lynch, Patrick }, editor={ }, title={Scrum’s Distinct Role Definition Complementing LPS & Takt Implementation}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={442-453}, url={http://www.iglc.net/papers/details/2295}, doi={10.24928/2024/0181}, affiliation={PhD Candidate, South East Technological University, Cork Road, Waterford. williepower2010@gmail.com ORCID – 0000-0001-5791-846X ; Senior Lecturer, South East Technological University, Cork Road, Waterford. Derek.Sinnott@setu.ie ORCID – 0000-0003-3969-8699 ; Lecturer, South East Technological University, Cork Road, Waterford. Patrick.Lynch@setu.ie ORCID – 0000-0002-5406-3846 }, abstract={LPS and Takt are lauded for their potential to transform construction’s approach to planning and execution. However, more explicit specification of the roles and responsibilities of different levels of management would be helpful towards more effective functioning of the methods. Scrum offers distinct role, responsibility, and accountability definition and this paper examines the applicability of such disciplined role clarity to assist LPS and Takt implementations. This mixed-methods research uses case study design and data from purposeful semi-structured interviews, observation, a literature review, and project documentation review from four projects in three different construction sectors. Findings posit that the adoption of role definition of Product Owner, Scrum Master, and Developers from Scrum could bring greater clarity and effectiveness to site management team’s delivery. Eliminating duplication of effort and crossover of duties allows greater focus on executing work, preparing work, and stakeholder engagement. }, author_keywords={Lean construction, scrum, agile, last planner system, takt. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Pérez.2024, author={Pérez., Cristina T. and Wandahl, Søren and Arildsen, Mathias }, editor={ }, title={Relationship Between Time Spent in Production Work Activities and Production Workspaces.}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={454-465}, url={http://www.iglc.net/papers/details/2296}, doi={10.24928/2024/0189}, affiliation={Assistant Professor, Department of Civil & Architectural Engineering (CAE), Aarhus University (AU), Denmark, cristina.toca.perez@cae.au.dk, https://orcid.org/0000-0002-4182-1492 ; Professor, CAE Department, AU, Denmark, swa@cae.au.dk, https://orcid.org/0000-0001-8708-6035 ; Master student, CAE Department, AU, Denmark, 201806089@post.au.dk }, abstract={The study presented in this paper is part of an ongoing research project that addresses the absence of established procedures for automatically measuring the distribution of time workers spend on Value-adding (VA) activities. To understand the relationship between workers’ time spent on VA activities and VA workspaces, the activities conducted by a carpenter trade were studied during the realization of a Case Study on a renovation building project. The carpenters were divided into three groups regarding the activities that they conducted: interior, façade, and roof activities. The authors used two sources of evidence to compare the time that workers spent in production work categories and workspaces: (1) the work sampling technique to obtain time spent in work categories and (2) smartwatches to collect time spent in different workspaces. The authors used geographic data points provided by smartwatches worn by the carpenter trade to collect their location within the job site and developed a Python script to automatically group the data points into workspaces. Correlation analysis reveals a strong correlation (R2=0.2473) and very strong correlation (R2=0.7886) between time spent in VA workspaces and time spent on VA activities when the workers worked on interior and exterior activities, respectively. }, author_keywords={Workspaces, construction site, production work, value-adding work. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Fireman2024, author={Fireman, Marcus C.T. and Bizarro, Lucas B. and Antonini, Bruno G. and Campos, Giuliano Silva de and Junior, Celso Denardi and Etges, Bernardo M.B.S. }, editor={ }, title={Last Planner System in the Owner's Perspective: Case Study in Onshore Wind Energy Projects}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={466-467}, url={http://www.iglc.net/papers/details/2297}, doi={10.24928/2024/0210}, affiliation={Founding Partner at Climb Consulting Group, PhD Candidate, M.Sc. Eng. Federal University of Rio Grande do Sul, Porto Alegre, Brazil, marcus@climbgroup.com.br, orcid.org/0000-0001-5843-4715 ; Lean Consultant at Climb Consulting Group, Graduate in Production Eng. At Pucrs, Porto Alegre, Brazil. lucas@climbgroup.com.br, orcid.org/0000-0002-0341-0879 ; M.Sc.Eng., Lean Consultant at Climbg Consulting Group, Graduate in Civil Eng. At Pucrs, Porto Alegre, Brazil, bruno@climbgroup.com.br, orcid.org/0000-0003-4437-4664 ; Planning Engineer at Engie Brazil, Graduate at Civil Engineer at Pucrs, Porto Alegre, Brazil, giuliano.campos@engie.com, orcid.org/ ; Planning Coordinator at Engie Brazil, Graduate at Electrical Engineer at Federal University of Parana, Porto Alegre, Brazil, celso.denardi@engie.com, orcid.org/ ; Founding Partner at Climb Consulting Group, PhD Candidate, M.Sc. Eng. Federal University of Rio Grande do Sul, Porto Alegre, Brazil, bernardo@climbgroup.com.br, orcid.org/ 0000-0002-3037- 5597 }, abstract={The race to reduce countries' carbon footprints has increased pressure to shorten the timelines of projects related to the construction of renewable energy parks. Projects of this scale require greater involvement between the representatives of the owner, who act in project management, and companies contracted to perform different scopes of the project. This study presents, through two case studies, the adoption of a model based on the Last Planner System from the perspective of the owner in onshore wind energy projects. It discusses current challenges within the management model of these projects and addresses tools and routines to be considered by companies participating in onshore wind energy construction. Among the main contributions of the research is the highlighted importance of the owner in the dissemination of lean within contracted companies, as well as the role of rituals such as control tower meetings and lookahead planning in improving communication and collaboration between sectors. }, author_keywords={Lean construction, Last Planner System, owner, onshore wind energy project, collaboration. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Lima2024, author={Lima, Caio M. and Fireman, Marcus C. T. and Nascimento, Lucas H. and Etges, Bernardo M. B. S. and Antonini, Bruno G. and Bluhm, Bruno B. and Silva, Denilson P. and Rocha, Fabiano C. O. }, editor={ }, title={Agile Ramp-Up: A Method to Reduce Premature Construction Start}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={478-489}, url={http://www.iglc.net/papers/details/2298}, doi={10.24928/2024/0212}, affiliation={M.Sc. Eng., Specialist in research, development and innovation at Grupo Cortez, Fortaleza, Brasil caiolima@cortezengenharia.com.br ; PhD Candidate, M.Sc. Eng., Founding-Partner at Climb Consulting Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil. marcus@climbgroup.com.br ; Planning Coordinator at Grupo Cortez, Fortaleza, Brasil lucashenrique@cortezengenharia.com.br ; PhD Candidate, M.Sc. Eng., Founding-Partner at Climb Consulting Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil. bernardo@climbgroup.com.br ; M.Sc. Candidate in Civil Eng. at Federal University of Rio Grande do Sul, Lean Consultant at Climb Consulting Group, Porto Alegre, Brazil. bruno@climbgroup.com.br ; Director Eng. at Grupo Cortez, Fortaleza, Brasil brunobluhm@cortezengenharia.com.br ; General Superintendent at Grupo Cortez, Fortaleza, Brasil denilsonsilva@cortezengenharia.com.br ; Cost Manager at Grupo Cortez, Fortaleza, Brasil fabianorocha@cortezengenharia.com. }, abstract={It is understood that one of the main contributing factors to stagnant productivity in the construction sector is the haste of project teams to start construction without a thorough readiness assessment. With the aim of improving the sector's performance, recent research has turned to analyzing the consequences and challenges associated with the premature start of projects, showing a direction in the search for effective solutions to these issues. The purpose of this work was to present the application of an agile ramp-up method developed to mitigate cases of premature construction start in onshore wind projects. The method used in this article was Design Science Research and covers the following phases: awareness of the problem through understanding the concepts involved; artifact suggestion through the development of a diagnosis; development from the choice of appropriate tools for constructing the "Starting Right" method; evaluation through the impact, transparency, and statistical variance analysis in 16 projects, of which 6 applied the method; conclusion through the systematization of the main learnings. The "Starting Right" method significantly improved the performance of projects during the initial phases, with strategic tool use proving essential for effective responses to various scenarios. }, author_keywords={Agile Ramp-Up, Lean construction, Wind Farm, LPS. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Moura2024, author={Moura, Lucas M. and Antonini, Bruno G. and Fireman, Marcus C. T. and Etges, Bernardo M. B. S. and Campos, Frederico R. and Kronbauer, Bárbara K. }, editor={ }, title={Lean Construction Implementation in the Construction of an Airport Runway}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={490-500}, url={http://www.iglc.net/papers/details/2299}, doi={10.24928/2024/0216}, affiliation={Lean Consultant at Climb Consulting Group, Graduate in Civil Eng. at Uniredentor, Itaperuna, Brazil. lucas.macalister@climbgroup.com.br , ; M.Sc. Civil Eng. at Federal University of Rio Grande do Sul, Lean Consultant at Climb Consulting Group, Porto Alegre, Brazil. bruno@climbgroup.com.br, orcid.org/0000-0003-4437-4664 ; PhD Candidate, M.Sc. Eng., Founding-Partner at Climb Consulting Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil, marcus@climbgroup.com.br , orcid.org/0000-0001-5843-4715 ; PhD Candidate, M.Sc. Eng., Founding-Partner at Climb Consulting Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil, bernardo@climbgroup.com.br , orcid.org/0000-0002-3037- 5597 ; Director Eng. at Neovia Engenharia, Curitiba, Paraná, Brazil frederico.campos@neoviaengenharia.com.br , orcid.org/0000-0002-5745-7461 ; Planning Eng. at Neovia Engenharia, Curitiba, Paraná, Brazil barbara.kronbauer@neoviaengenharia.com.br , orcid.org/0000-0003-1370-7331 }, abstract={This study explores the application of Lean Construction in the expansion and restoration of an airport runway, a project marked by complexities and high demands. The aim of this paper is to address the following research question: "What is the effectiveness of the daily scheduling approach compared to the weekly horizon approach for short-term scheduling in complex and variable infrastructure projects?". To answer this question, an extensive literature review was conducted, anchored in the action research method. It was found that the adoption of daily schedules may be more efficient, as it allows for greater agility in responding to client needs, accommodating constant changes requested by stakeholders, and managing uncertainties inherent in infrastructure projects of this nature. The results highlight significant advances in long-term adherence and project management effectiveness, despite encountered obstacles such as coordination among different stakeholders and adaptation to variabilities. The Percentage of Constraint Removal (PCR) improved by 22% from the start to the end of the project, while maintaining a 93% adherence to the Master Planning. }, author_keywords={Lean construction, Last Planner® System, variability, constraint analysis, lookahead planning. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Barth2024, author={Barth, Karina and Formoso, Carlos }, editor={ }, title={Principles and Prescriptions for the Development and Implementation of Performance Dashboards}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={501-512}, url={http://www.iglc.net/papers/details/2300}, doi={10.24928/2024/0220}, affiliation={Researcher, Building Innovation Research Unit (NORIE), Universidade Federal do Rio Grande do Sul (UFRGS). Porto Alegre, RS, Brazil, kbertotto@gmail.com, https://orcid.org/0000-0001-9612-6246 ; Professor, Building Innovation Research Unit (NORIE), Universidade Federal do Rio Grande do Sul (UFRGS). Porto Alegre, RS, Brazil, formoso@ufrgs.br, orcid.org/0000-0002-4772-3746 }, abstract={Lean Production implementation in construction creates additional demands for Performance Measurement Systems (PMS), beyond what is typically suggested in general performance measurement literature. A PMS can support the implementation of Lean Production by evaluating the impacts of changes and providing information to guide organizations through this process. Some companies have adopted additional metrics during Lean implementation, but often limited to indicators related to the Last Planner System. Most companies still use traditional production control metrics, like cost, time deviation and project progress. There are opportunities for enhance performance measurement in Lean implementation programs, especially by incorporating leading indicators related to fundamental concepts and principles, such as pull production, work-in-progress, and continuous flow. Performance dashboards play a key role in achieving those objectives, facilitating information distribution across managerial levels, enhancing stakeholder communication, and encouraging participation. The main outcome of this investigation is a set of design principles (i.e. general recommendations that support decision-making in the design of a solution) and design prescriptions (i.e. suggested course of action for a given circumstance to achieve a certain effect) to guide the development and implementation of performance dashboards. This research is based on two empirical studies conducted in construction companies implementing lean production. }, author_keywords={Dashboard, Performance Measurement, Indicator, Metric, Visual Management. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Sterzi2024, author={Sterzi, Marcus P. and Bonesi, Fabiana }, editor={ }, title={Proposal for a Deadline Deviation Index Based on Line of Balance and Rhythm Deviation Data}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={513-522}, url={http://www.iglc.net/papers/details/2301}, doi={10.24928/2024/0221}, affiliation={MSc, Building Innovation Research Unit (NORIE), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil. Consultant and Managing Partner at LD Consulting, marcus@ldconsulting.com.br, https://orcid.org/0000-0002-2235-944X ; MSc, Building Innovation Research Unit (NORIE), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil. Consultant and Managing Partner at LD Consulting, fabiana@ldconsulting.com.br, orcid.org/0000-0002-9899-7798 }, abstract={The line of balance (LOB) plays an important role in the implementation of Location-Based Planning and Control (LBPC), inducing most activities to be carried out at only one production rate and enabling the established deadlines to be met. Monitoring deviations from these deadlines is essential for project success, particularly in the construction industry. Rhythm deviation, an indicator rooted in Lean Construction principles and closely linked to LBPC, reveals the interference of critical tasks with other project activities and enables the analysis of how rhythm deviation of critical activities affects the project's deadline deviation. Analysing deadlines using the LOB technique in combination with rhythm deviation helps identify which activities are associated with project delays and advancements, allowing for corrective actions to improve workflow. However, this topic receives limited attention in the literature. The aim of this research is to propose a Deadline Deviation Index for monitoring and projecting delays and advancements in construction projects based on LOB and rhythm deviation data. This paper adopts an Action-Research methodology within a Case Study Approach. It presents findings from a case study involving 12 residential building projects that utilized location-based methods for scheduling and control, alongside rhythm deviation for monitoring critical processes. The results underscore how integrating the LOB technique with rhythm deviation enhances workflow and deadline management, thereby refining the sector's ability to estimate delays and advancements. }, author_keywords={Location-Based Planning and Control (LBPC), Takt planning (TP), Line-of-Balance, Rhythm Deviation, Deadline Deviation. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Brioso2024, author={Brioso, Xaver and Delgado, Karla and Herrera, Rodrigo F. and Lozano, Miguel and Bravo, Luis }, editor={ }, title={Collaborative Planning of Subcontractors Using the Last Planner System and BIM: A Case Study on a Gas Subcontractor in Repetitive Housing Projects}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={523-534}, url={http://www.iglc.net/papers/details/2302}, doi={10.24928/2024/0222}, affiliation={Professor, GETEC Research Group, Department of Engineering, Pontifical Catholic University of Peru, Perú, xbrioso@pucp.edu.pe orcid.org/0000-0002-0174-0241 ; Researcher, GETEC Research Group, Department of Engineering, Pontifical Catholic University of Peru, Perú, karla.delgado@pucp.pe orcid.org/0009-0004-3627-0982 ; Assistant Professor, School of Civil Engineering, Pontificia Universidad Católica de Valparaíso, rodrigo.herrera@pucv.cl orcid.org/0000-0001-5186-3154 ; Lecturer, GETEC Research Group, Department of Engineering, Pontifical Catholic University of Peru, Perú, malozanov@pucp.edu.pe orcid.org/0000-0001-6238-9400 ; Assistant Professor, GETEC Research Group, Department of Engineering, Pontifical Catholic University of Peru, Perú, bravo.lh@pucp.edu.pe orcid.org/0000-0003-1476-9710 }, abstract={The objective of this study is to adapt the Last Planner System (LPS) for managing subcontractors in natural gas installations within repetitive housing projects, using BIM technology for enhanced modeling and efficiency. Our methodology was applied to a large-scale, multi-family, low-cost housing project in Lima, Peru. Through this application, we achieved high Percent Plan Complete (PPC) values and improved collaborative planning practices. This paper makes distinct contributions to the subcontractor management literature: (1) it demonstrates the practical integration of LPS with BIM to streamline subcontractor activities in a real-world setting; (2) it offers a novel approach for determining optimal Takt Time Planning for daily and weekly schedules, enhancing the predictability and reliability of subcontractor work; and (3) lessons learned from the implementation provide a roadmap that can be adapted to other subcontractor management scenarios. }, author_keywords={Last Planner System, subcontractor management, gas facilities management, continuous improvement, BIM. }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, } @CONFERENCE{Ebbs2024, author={Ebbs, Paul and Ward, Steven and Hour, Nour Al and Manu, Emmanuel and Asnaashari, Ehsan }, editor={ }, title={Systematic Approach to Making People, Processes & Projects Ready for Make-Ready}, journal={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, booktitle={Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)}, year={2024}, pages={535-547}, url={http://www.iglc.net/papers/details/2303}, doi={10.24928/2024/0231}, affiliation={Technical Director, Transport & Infrastructure (T & I), Roads, WSP in the UK, paul.ebbs@wsp.com, orcid.org/0009-0003-5630-1726 ; Managing Director, Lean Construct Ltd., UK, steve@leanconstruct.co.uk, orcid.org/0000-0002-5291-7246 ; Associate, T & I, Roads, WSP in the UK, nour.alhour@wsp.com, orcid.org/0009-0003-5630-1726 ; Associate Professor, Centre of the Built Environment, School of Architecture, Design and the Built Environment, Nottingham Trent University, UK, emmanuel.manu@ntu.ac.uk, orcid.org/0000-0002-9002-3681 ; Senior Lecturer, Centre for Lean Projects, Department of Construction Management, Nottingham Trent University, UK, ehsan.asnaashari@ntu.ac.uk, orcid.org/0000-0001-5552-9428 }, abstract={Project management methods like risk management (RM), production planning (including make-ready) and continuous improvement (CI), are often considered in isolation of each other. The literature recognises how teams struggle with implementing these methods according to known current best practices and standards. The purpose of this paper is to report the on-going development of a research artefact called IRMA 3600 (Integrated Risk Management Approach) through a Longitudinal Action Case Study over four cases between 2016 and 2024. There is a particular focus on Case 4 – an ISO 18404 Certified Alliance. In summary, this research has identified links between RM, make-ready planning and CI, and proposes IRMA 3600 as a model to advance the Last Planner® System (LPS) by feeding what ‘might’ happen or might be possible through ‘should, can, will, did, learn’ functions. We conclude that both effective RM and make-ready are required to create and protect value which includes reliable workflow. However, to embed RM and make-ready planning a safe and collaborative environment is desired. In theory, RM is complex as it deals with uncertainty. On the other hand, make-ready is a relatively straightforward activity to ‘just’ screen tasks for constraints. However, in practice both are extremely difficult to implement. }, author_keywords={Risk Management, Make-Ready, Last Planner® System, IRMA 3600, Alliancing }, address={Auckland, New Zealand }, issn={2789-0015 }, publisher={ }, language={English}, document_type={Conference Paper}, source={IGLC}, }