Dempster-Shafer WASPAS Decision-Making Method for the Selection Wall Construction of a Single-Family House

The application of multi-criteria decision-making methods is particularly useful in constructing single-family houses when it is necessary to select the optimal types of wall construction. This paper presents a new WASPAS DS method based on the Dempster-Shafer theory. The weights of the chosen criteria (cost, strength, durability, ecological impact, microclimatic suitability and construction duration) are estimated using the SWARA method. They help to make informed decisions that balance sustainability goals, cost-effectiveness and functionality. A numerical example shows how walls' cost, strength and ecological impact influence the choice of wall construction for a single-family house. The applicability of the newly proposed WASPAS DS method in solving MCDM problems related to unclear criteria and expert weights allows for flexible adaptation of criterion weights to specific project requirements. This ensures a more efficient decision-making process and long-term sustainability of construction projects.