TY  - CONF
TI  - Rigorous 2-Hour Takt Reveals Upstream Underperformance
C1  - Auckland, New Zealand
C3  - Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)
SP  - 238
EP  - 249
PY  - 2024
DO  - 10.24928/2024/0219
AU  - Alhava, Otto
AU  - O’Loughlin, Matthew
AU  - Haapasalo, Harri
AU  - Viitanen, Jaakko
AU  - Pitkäranta, Tomi
AD  - CTO, Flow Technologies Oy, Helsinki, Finland, otto.alhava@fira.fi, orcid.org/0000-0001-8820-0522
AD  - Site manager, Fira Rakennus Oy, Vantaa, Finland, matthew.oloughlin@fira.fi, orcid.org/0009-0005-1317-8355
AD  - Professor, Department of Industrial Engineering and Management, University of Oulu, Finland, harri.haapasalo@oulu.fi, orcid.org/0000-0001-5413-5638
AD  - Project director, Fira Rakennus Oy, Vantaa, Finland, jaakko.viitanen@fira.fi, orcid.org/0009-0006-7343-2797
AD  - Head of Product, Sitedrive Oy, Helsinki, Finland, tomi.pitkaranta@sitedrive.com, orcid/ 0000-0003-1100-0578
AB  - 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.
KW  - One-piece flow
KW  - Toyota Production System
KW  - JIT
KW  - Takt
PB  - 
T2  - Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32)
DA  - 2024/07/01
CY  - Auckland, New Zealand
L1  - http://iglc.net/Papers/Details/2215/pdf
L2  - http://iglc.net/Papers/Details/2215
N1  - Export Date: 03 April 2025
DB  - IGLC.net
DP  - IGLC
LA  - English
ER  -