SUPPLY CHAIN MANAGEMENT AND UTILIZATION OF PROMTHEE

There are many problems in contracting projects and their performance. At each project stage and due to di erent reasons, these problems a ect cost, time and overall project quality. Hence, in order to increase the eciency and performance in all levels of the chain and with supply chain managment approach, there will be a coordination from the beginning of a project (contrac- tor selection) to the end of project (handover of project). Contractor selection is the foremost part of construction projects which in this multi-criteria decision-making, the best contractor is determined by expert judgment, dif- ferent variables and their priorities. In this paper for selecting the best contractor, numer- ous criteria were collected by asking from adept experts and then among them, 16 criteria with highest frequency was considered for questionnaire. These questionnaire was distributed between experts. Cronbach's alpha co-ecient was obtained as 72%. Then based on Borda,s function 12 important criteria was selected which was categorized in four main criteria and related sub-criteria as follow: Environmental factors and physical equip- ment: proqurement and materials (supplier), company's machines, contractor's proposed cost estimate - nan- cial capacity: bank turnover and company's assets, the income of tax declaration in last year, Ability to com- pensate for losses or delays - past performance- records and technical expertise: experts and key personnel, the past technical backgrounds and experiences, employer satisfaction of previous contracts, the number of sim- ilar projects was done - standards: rank and eld of expertise which company is quali ed for and its valid- ity, availability and number of permitted projects done. Then with PROMTHEE method, the criteria was nor- malized and monitored, nally the best alternative was selected. In this research, qualitative criterias of each company is became a quantitative criterias. Finally in- formation of some companies was evaluated and the best contractor was selected based on all criterias and their priorities.