Optimizing Volumetric Offsite Construction Production Line by Utilization of Value Stream Mapping – A Case Study

11 pages•Published: July 23, 2025

Abhay Chavan, Sandeep Langar and Somik Ghosh

Abstract

The efficiency of offsite construction, particularly volumetric modular construction, can be significantly enhanced by optimizing the production process. This study uses a case-study method to explore the application of Value Stream Mapping (VSM) to identify and mitigate inefficiencies in the production line of an offsite construction factory. By analyzing the current production flow of Factory A, several inefficiencies were identified, and solutions were proposed and tested in collaboration with the factory’s management team. The proposed solutions, many of which align with lean manufacturing principles, were evaluated for effectiveness. The findings provide a framework for other volumetric modular construction manufacturers to optimize their production processes, preliminary reducing schedule time and ultimately leading to reduced costs and waste.

Keyphrases: offsite construction, offsite factory production line, value stream mapping (vsm), volumetric modular construction

In: Wesley Collins, Anthony J. Perrenoud and John Posillico (editors). Proceedings of Associated Schools of Construction 61st Annual International Conference, vol 6, pages 450-460.

Links:	https://easychair.org/publications/paper/B1JT
	https://doi.org/10.29007/48cf

BibTeX entry

@inproceedings{ASC2025:Optimizing_Volumetric_Offsite_Construction,
  author    = {Abhay Chavan and Sandeep Langar and Somik Ghosh},
  title     = {Optimizing Volumetric Offsite Construction Production Line by Utilization of Value Stream Mapping – A Case Study},
  booktitle = {Proceedings of Associated Schools of Construction 61st Annual International Conference},
  editor    = {Wesley Collins and Anthony J. Perrenoud and John Posillico},
  series    = {EPiC Series in Built Environment},
  volume    = {6},
  publisher = {EasyChair},
  bibsource = {EasyChair, https://easychair.org},
  issn      = {2632-881X},
  url       = {/publications/paper/B1JT},
  doi       = {10.29007/48cf},
  pages     = {450-460},
  year      = {2025}}

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