عنوان مقاله [English]
Development of large infrastructural projects is considered as an important tool for governments to achieve ustainable development. The main features of these projects separating them from other types of projects are requiring enormous financial, high scientific and technological levels, extensive technical knowledge and high amounts of workload and time. These projects have significant effects on economic and technological status, and even on political and social situations in different nations. By considering this importance, selecting appropriate ethods for the preparation and implementation of project seems necessary. Otherwise, rreversible losses and high costs could occur. Thus, an appropriate policy in the decision process concerning he mplementation f nfrastructural projects is vital. This paper was prepared based on an university research project, in which the identification and comparison of different systems is undertaken using expert opinion to determine he mportance of factors on the decision process. Using a hierarchical analysis process, a model is proposed for making decisions about the choosing of optimal project delivery system for constructing infrastructures. Because of the fact that the final selection of the project delivery system is done by the owner/employer of the project, this project is approached from the employers viewpoint.