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Decision Support System For Optimizing Construction Site Layouts

Construction site layout planning requires decision makers to identify the planned location of each temporary construction facility on site. These temporary facilities include site offices, workshops and storage facilities; and their planned locations on site have a direct impact on the safety and efficiency of construction operations. As such, construction decision makers need to carefully evaluate all feasible locations for these temporary facilities and select an optimal layout that maximizes safety and efficiency of construction operations. This paper presents the development of an automated DSS that is designed to support construction planners in this multi-objective site layout optimization problem. The system incorporates four newly developed modules: (1) a multi-objective optimization module to quantify and optimize the impact of site layout planning on construction safety, and the travel cost of resources on site; (2) a relational database module to facilitate the storage and retrieval of construction site layout data and the generated optimization results; (3) a user interface module to facilitate the input of project data and the analysis of the generated optimal site layout plans; and (4) a visualization module that interfaces with external CAD software to support the visualization of optimal site layout plans. An application example is analyzed to illustrate the use of the system and demonstrate its capability in generating optimal trade-off plans between construction operations safety and efficiency.