Daily Batch Size of Design – Proposal for the Sizing of Design Batches

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.