عنوان مقاله [English]
There are many ambiguous and unknown features in running and management of different projects especially in constructional projects. Which is called uncertainty? This study tries to recognize the uncertainty cases in constructional projects, then categorize them in risk and opportunities to be analyzed so as to design a plan to encounter risks in a proper way and use the opportunities in time. It is a survey and field research. The statistical population was the consulting and construction corporations active in sanandije. The data was gathered through a questionnaire according the standards in risk management (in particular PMBok) and their steps were analyzed. The constructional project dimensions were explained by introducing nine duties of project manager. The findings showed 36 risk items in six categories: technical and technological, work conditions, economical and financial, organizational, sociocultural. The effect of each one of them on project objectives and the importance of each risk was measured.