Using PROMETHEE Method to Provide a Model to Rank the Contractors in Construction Projects (Case study: Tehran Municipality II)

The aim of this study is to determine the priorities and the weights of effective criteria in contractor selection as well as ranking and selection of a qualified contractor through PROMETHEE method. Since the municipalities ratify large projects for implementation, choosing a qualified contractor for each project requires careful and sophisticated analysis in order to support the management for optimum decision making. So, to evaluate and ranking the contractors, first we studied the relevant literature. Then, using expert's points of view through questionnaires, we have identified 28 criteria for contractor selection. According to abovementioned criteria, we have consulted 35 experts and managers (at least with BA degree) in municipality of zone 2 of Tehran through questionnaires. Finally, using screening and obtaining effective criteria through eigenvector, we have calculated the weights of criteria and determined the ranking of contractors through PROMETHEE method.