An Optimization Model for Construction Planning in a Townhouse Construction Project in Thailand

This paper presents an optimization technique for the construction planning phase; using it, project managers can solve construction project problems before beginning a project. It uses a mathematical model called integer programming in which the decision variable is an integer. In this case study, a total of 190 townhouse projects have been designed by the decision maker using three methods: the conventional system, the load bearing structure precast system, and the skeleton frame system. Our study found that when applying the optimization technique during the construction planning phase, the objective function for the project’s minimum construction cost was 359.171 million Baht (${\$}11.22$ million), within a total project duration of 55 months. In addition, this paper presents a sensitivity analysis followed by conclusions.