This Thesis presents the details of a study on the assessment of risks management perception and practice of construction contractors in Saudi Arabia toward construction risks. Focuses on risk allocation (both contractors perception and as practiced); risk importance and risk effects on a construction project; and compares contractors' perception of allocating construction risks to the common practice of allocating these risks.; To achieve the study objectives the researcher conducted a literature review of the subject, defined important risk parameters and categories related to construction risks, designed a questionnaire related to allocation of risks, importance and effects of these risks on a construction projects. The questionnaire was distributed to 82 construction contractors of grade 1 and higher as per the classification of the Chamber of Commerce, Eastern Province Chapter.; Responses from 30 contractors were received, analyzed, summarized and reported. Analysis of the results indicated that the perception of construction contractors in Saudi Arabia in allocating surveyed risks is different from the common practice of allocating these risks. In practice, most of the risks are allocated to contractors and none to owners. Quality of work is the most important risk while adverse weather condition is the least important risk. The surveyed risks have the highest impact on the schedule of a project with a response frequency of 38.5% while the same risks affect the safety of the project least (only with a response frequency of 8.5%).
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