Optimization of Prefabricated Components in Housing Modular Construction

Sunghoon Nam, Jongsik Yoon, Kyungrai Kim and Byungjoo Choi
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Sunghoon Nam: Korea Land and Housing Institute (LHI), Jinju 34047, Korea
Jongsik Yoon: Engineering Research Institute, Ajou University, Suwon 16499, Korea
Kyungrai Kim: Department of Architectural Engineering, Ajou University, Suwon 16499, Korea
Byungjoo Choi: Department of Architectural Engineering, Ajou University, Suwon 16499, Korea

Sustainability, 2020, vol. 12, issue 24, 1-22

Abstract: In modular construction—a type of industrialized construction—production planning is very important, as it is closely related to the project’s duration, quality, and sustainability. The constraints (production area, delivery due date) often differ for each project, yet production planning in modular construction has failed to change with the project characteristics. As a result, bottlenecks and construction delays are common problems seen in modular construction, which, in turn, decreases the production ratio, causing the production to be inefficient. To this end, this paper applied a prefabricated component in the modular production process. The paper developed a process analysis model considering constraint factors (production period, production area) to derive the optimal configuration of the prefabricated components in various alternatives. The developed analysis model was then applied to a virtual case to analyze the productivity improvement and select the optimal process. The optimal production process was derived by simulating the possible production planning within a limited production area and production timeline. The result of a simulation indicates that the production period has been halved by optimizing the process. Furthermore, by applying prefabricated components, the production efficiency was further increased because the existing linear production process’s bottleneck disappeared. The model is deemed to have the potential to optimize various production methods across production facilities or modular factories that simultaneously perform multiple projects.

Keywords: modular construction; optimal production process; prefabricated components; off-site construction; production simulation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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