https://doi.org/10.24928/2024/0176

Synergy Between LPS and Slack: A Case Study in Brazilian Horizontal Housing Developments

João P. P Vieira¹, Bernardo M. B. S. Etges², Fernando P. Vasconcelos³, Gustavo B. Bellaver⁴ & Hugo R. C. Nogueira⁵

¹M.Sc. Eng., Lean Consultant at Climb Consulting Group, Porto Alegre, Brazil, [email protected], orcid.org/0000-0003-0292-2570
²PhD Candidate, M.Sc. Eng., Founding-Partner at Climb Consulting Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil, [email protected], orcid.org/0000-0002-3037-5597
³Coordenador de Assembly At Spotlar, Florianópolis, Brazil, [email protected]
⁴M.Sc. Civil Engineer, Project Coordinator, Climb Consulting Group, Porto Alegre, Brazil, [email protected], https://orcid.org/0000-0002-4937-5861
⁵Construction Coordinator at FGR Incorporações SA, Goiania, Brazil, [email protected], 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.

Keywords

Lean Construction, slack, last planner system.

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Reference

Vieira, J. P. P. , Etges, B. M. B. S. , Vasconcelos, F. P. , Bellaver, G. B. & Nogueira, H. R. C. 2024. Synergy Between LPS and Slack: A Case Study in Brazilian Horizontal Housing Developments, Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32) , 428-441. doi.org/10.24928/2024/0176

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