Optimal construction site layout considering safety and cost aspects

Distance and safety are two essential factors while designing a good construction site layout planning (CSLP). In the past, studies always considered CSLP from the treated a single objective optimization problem. This study offers the development of a site layout planning model that is capable of minimizing construction safety risk and minimizing the total distance of interaction on the site, simultaneously. For this purpose, this study uses the multi-objective Particle swarm optimization algorithms (MO-PSOs). The present model was developed in five main phases: (1) Investigate and develop objective criteria to enable minimizing construction safety risk of crane operations; (2) Investigate and develop objective criteria to enable minimizing the total distance of interaction; (3) Modeling the site layout practical optimization constraints; (4) Implementing the model as a multi-objective particle swarm optimization algorithm application; and (5) Evaluating and verifying performance of the model by the grid search method. An application case study of a residential building project is presented to demonstrate the benefits of the usage of the model.