A new analysis of critical paths in mega projects with interval type-۲ fuzzy activities by considering time, cost, risk, quality, and safety factors

Critical path method (CPM) is categorized as a popular tool for scheduling mega projects. In this paper, to enjoy the advantages of interval type-۲ fuzzy sets (IT۲FSs) and better address uncertainty for the activities’ attributes, a new analysis model is presented to determine the critical path under an IT۲F-environment. Also, new efficient factors on specifying critical paths, such as time, cost, risk, safety, and quality (TCRSQ), are presented to achieve a more robust plan assisting in megaproject success. Moreover, an IT۲F weighting approach is suggested for specifying the weights of TCRSQ factors. Furthermore, a new IT۲F-approach employing the relative preference relation is expressed for identifying the importance of each expert. Consequently, a new model for critical path determination procedure by considering efficient factors is developed under the IT۲FSs environment. Finally, to demonstrate the suggested model's capability and the calculation process, an application from the previous research is solved.

کلیدواژه ها:

Analysis of critical paths ، megaprojects ، interval type-۲ fuzzy sets (IT۲FSs) ، risk ، quality ، and safety factors