TY  - CONF
TI  - Daily Batch Size of Design – Proposal for the Sizing of Design Batches
C1  - Osaka and Kyoto, Japan
C3  - Proceedings of the 33rd Annual Conference of the International Group for Lean Construction (IGLC 33)
SP  - 1011
EP  - 1022
PY  - 2025
DO  - 10.24928/2025/0113
AU  - Lappalainen, Eelon
AU  - Abou-Ibrahim, Hisham
AU  - Oraskari, Jyrki
AU  - Seppänen, Olli
AU  - Majid, Umer
AU  - Derry, Markus
AD  - Postdoctoral Researcher, Department of Civil Engineering, Aalto University, Finland, eelon.lappalainen@aalto.fi, orcid.org/0000-0002-7573-344X
AD  - Assistant Professor, American University of Beirut, Lebanon, ha306@aub.edu.lb, orcid.org/0000-0003-4261-9322
AD  - Postdoctoral Researcher, RWTH Aachen University, Germany, oraskari@ip.rwth-aachen.de, orcid.org/0000-0002-4723-3878
AD  - Associate Professor, Department of Civil Engineering, Aalto University, Finland, olli.seppanen@aalto.fi, orcid.org/0000-0002-2008-5924
AD  - MSc Student, Department of Civil Engineering, Aalto University, Finland, umer.majid@aalto.fi, orcid.org/0009-0002-8521-0981
AD  - Doctoral Researcher, Business Developer, Department of Civil Engineering, Aalto University, Finland, markus.derry@aalto.fi
ED  - Seppänen, Olli 
ED  - Koskela, Lauri 
ED  - Murata , Koichi 
AB  - Lean construction techniques have effectively minimized batch sizes and lead times in construction production. However, the reduction of design batch sizes has focused on planning smaller tasks and has been quantified through the assessment of design hours, information packages, or design tasks. This work seeks to propose a practical method for determining batch size in design while simplifying and grounding ongoing theoretical discussions on the subject. The employed research methodology is a case study of four Finnish construction projects utilizing software created by researchers to estimate design batch sizes from industry foundation class (IFC) files. The primary outcome of the project is to demonstrate a method for visualizing the design batch size concerning added, removed, and updated building information model (BIM) components. The results indicate considerable diversity in design batch sizes and design data exchange cycles across different design disciplines and projects. This paper offers practitioners and academics a method to visualize previously concealed design batch sizes, facilitating batch size analysis as an initial step toward lowering these sizes.
KW  - Lean construction
KW  - design
KW  - batch size
KW  - building information model.
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/2313/pdf
L2  - http://iglc.net/Papers/Details/2313
N1  - Export Date: 02 June 2025
DB  - IGLC.net
DP  - IGLC
LA  - English
ER  -