TY  - CONF
TI  - Comparative Analysis of Construction Waste: Robotic Vs. Manual Offsite Assembly
C1  - Osaka and Kyoto, Japan
C3  - Proceedings of the 33rd Annual Conference of the International Group for Lean Construction (IGLC 33)
SP  - 775
EP  - 786
PY  - 2025
DO  - 10.24928/2025/0225
AU  - Hadi, Ali
AU  - Cheung, Franco
AU  - Adjei, Solomon
AD  - Doctoral Researcher, Faculty of Computing, Engineering and the Built Environment, Birmingham City  University, Birmingham, UK, ali.hadi@mail.bcu.ac.uk, orcid.org/0000-0002-9411-1283; Senior Lecturer,  University of Warith Al-Anbiyaa, Karbala, Iraq 
AD  - Professor, Faculty of Computing, Engineering and the Built Environment, Birmingham City University,  Birmingham, UK, franco.cheung@bcu.ac.uk, orcid.org/0000-0001-6088-6315 
AD  - Senior Lecturer, Faculty of Computing, Engineering and the Built Environment, Birmingham City University,  Birmingham, UK, solomon.adjei@bcu.ac.uk, orcid.org/0000-0001-5712-6171 
ED  - Seppänen, Olli 
ED  - Koskela, Lauri 
ED  - Murata , Koichi 
AB  - Construction waste (CW) is a significant environmental concern that started to shape the future of the construction industry. Offsite construction (OSC) is one key approach widely praised for its capability to reduce CW due to its controlled environment where lean and technology principles can be applied. Despite the growing research confirming OSC capability to promote productivity and reduce lead times, evidence on material efficiency is highly limited. Hence, this study aims to fill this gap in the literature by conducting a comparative case study to investigate CW generation in OSC. Two timber frame panelised construction factories were approached with OSB assembly stations chosen to investigate how, how much and why CW is generated and whether lean and technology uptake are supporting CW reduction. While Factory A adopted a manual station to assemble the OSB layer, Factory B adopted a fully automated robotic station. The results indicate that the robotic station generated significant offcuts, accounting for 27% of the total OSB usage, compared to 16% generated by the manual station. The application of lean and technology practices is found to primarily focus on workflow, time, and cost, with limited consideration to material efficiency.
KW  - Construction Waste
KW  - Offsite Construction
KW  - Lean Construction
KW  - Automated Assembly
PB  - 
T2  - Proceedings of the 33rd Annual Conference of the International Group for Lean Construction (IGLC 33)
DA  - 2025/06/02
CY  - Osaka and Kyoto, Japan
L1  - http://iglc.net/Papers/Details/2387/pdf
L2  - http://iglc.net/Papers/Details/2387
N1  - Export Date: 01 June 2025
DB  - IGLC.net
DP  - IGLC
LA  - English
ER  -