SUPPLIER SELECTION AMONG DIFFERENT SCALE CONSTRUCTION COMPANIES USING FUZZY AHP AND FUZZY TOPSIS

Supplier selection is an important strategic decision for construction companies due to long-term project durations and high costs. In the sector, supplier decisions should take several criteria alternatives into account. Along with number of alternative suppliers, choosing best method evaluate suppliers another critical step. this study, we compare effectiveness different multi-criteria decision‐making methods selecting most convenient companies. respect, study integration powerful methods, Fuzzy Analytic Hierarchy Process (AHP) Technique Order Preference by Similarity Ideal Solution (TOPSIS). We use AHP calculation weights, then apply TOPSIS ranking alternatives. Several interviews were made experts at as a result those interviews, 7 main 24 sub-criteria comparing determined. test our approach two integrated find selected criteria. The contribution not limited decision-making problem in but also make comparison sized having same pool, show effect company based weights selection.