Identifying and evaluating the key impact factors of selecting formwork in high-rise building construction

The construction cost and duration of erecting a tall building are significantly reliant on the chosen formwork system, among the various systems in use. The selection of an appropriate formwork system requires specialized expertise and opinions from experienced professionals in the field to offer economically efficient solutions for stakeholders. In this study, the Fuzzy Analytical Hierarchy Process (FAHP) method was applied to assess formwork alternatives based on identified criteria derived from the outcomes of primary factors from the previous Exploratory Factor Analysis (EFA) stage. Fuzzy theory was employed to construct pairwise comparison matrices for criteria related to material selection in formwork, using the Analytical Hierarchy Process (AHP) method. The research emphasizes the paramount impact of the initial investment cost on formwork selection and designates plastic formwork as the optimal solution based on expert evaluations. The findings aim to augment managerial understanding of formwork systems, advocating for the integration of decision support tools in high-rise construction projects to enhance planning precision and select of suitable formwork systems tailored to specific projects.