Decisionmaking support model for reusable construction materials in multiple project management

Although reusable materials in a construction project need to be specifically managed by the head office of the construction company for proper retrieval and reuse, they are not efficiently managed. In many cases, construction companies treat reusable materials no differently from non-reusable materials. To manage reusable materials for effective and efficient procurement, the current procurement system needs to be improved based on the records of usage from multiple projects monitored and managed by the head office of the construction company. The objective of this paper is to discern and analyze the problems of the procurement process of reusable materials for current multiple projects by following case studies of three construction companies against this background. Based on the analysis, this paper emphasizes the need to implement systems for reusable materials procurement requests, outgoing materials quantity forecasts, and economic analysis for vehicle distribution, as well as the need to expand applicable uses of a resource pool. A model is also proposed to support the decision-making process in the procurement of reusable materials.