Synchronizing production of precast elements with on-site erection
 
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1
Faculty of Civil Engineering and Architecture, Lublin University of Technology, Poland
 
2
Faculty of Civil Engineering, Warsaw University of Technology, Poland
 
 
Submission date: 2024-02-29
 
 
Final revision date: 2024-05-18
 
 
Acceptance date: 2024-05-21
 
 
Publication date: 2024-10-01
 
 
Corresponding author
Piotr Jaśkowski   

Faculty of Civil Engineering and Architecture, Lublin University of Technology, Nadbystrzycka 38d, 20-618, Lublin, Poland
 
 
Archives of Civil Engineering 2024;(3):607-618
 
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ABSTRACT
Offsite construction technologies are developed to reduce project cost and duration. To make the most of the potential offered by prefabrication the planner should consider the whole supply chain. A failure to coordinate the off-site production with on-site erection is a source of waste (waiting time of the construction crews or redundant handling activities on-site). Most of the research to date focused on optimizing operations of a prefabrication plant assuming a deterministic schedule of demand for its products. The purpose of this paper is to develop a mathematical model for integrated scheduling of offsite and on-site operations. Its solution is a schedule that minimizes the downtime of both the prefabrication plant and the on-site erection crews. In accordance with the Just-in-Time concept, the prefabrication schedule is set in a way to reduce the stocks of finished products, thus reducing the storage area and cost of funds tied up in inventory. The schedule’s robustness against the disturbance in the production and erection workflows is assumed to be assured allocating time buffers. The advantage of the proposed method is the ease of collecting the input: instead of detailed cost records, estimates of unit cost of lost time can be used.
eISSN:2300-3103
ISSN:1230-2945
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