1
Afrand Sakht Construction Company/Project Manager/tehran/iran
2
payamnoor University/tehran/iran
Abstract
Nowadays, using the method of contract of lump sum contracts for the implementation of construction projects with general and small-scale use has become one of the common methods of project implementation by implementing organizations in the country. Such projects face special risks associated with choosing the type of contract, and due to the low history of implementation of this type of contract in the country, failure to identify and address the risks affecting them, may be challenging in the future of the country's manufacturing industry. In the present study, while identifying the risks of the collective agreement, an attempt has been made to evaluate the risks with a coherent approach and also their impact on the main indicators of project success from the perspective of four indicators of cost, time, quality and performance. For this purpose, using Fuzzy Analytic Hierarchy Process (FAHP) and Relative Significance Index (RII) techniques as well as Likert-based fuzzy numbers, the risks and priorities are evaluated based on their probability of occurrence and the severity of their effect. The output of the studies has, in the first place, led to the provision of a comprehensive list of construction risks in aggregate contracts. Also, the results of the analysis of the questionnaire to determine the relative importance of project success indicators showed that the criterion of "cost" with a weight of 0.503 is more important than other criteria and the criteria of "quality", "time" and "scope (performance)" are in the next ranks, respectively. In addition,
)