Authors : Sonia Ahmed, Bassam Hasan, Fayez Jrad and Petr Dlask
Abstract: Many studies have tried to determine the causes and impacts of change orders on the cost and time of the project which in turn leads to differences and disputes between contractors and owners who dealt with change orders in various engineering projects. This search displayed the causes of formal change orders occurring during life cycle the building project and its most important impacts on performance of the project through its indicators. The search also showed that the owner has 60% of responsibility for the change orders and provided recommendations for each of the responsible parties (owner, designer) according to the causes coming by him. Stressing the need to monitor performance in order to manage change orders and address the causes and decreasing the impact where the time overruns caused by formal change orders is 29% and the cost overrun caused by change order is 31%. The prediction models were drafted at additional cost that may result from change orders; it showed that there is a positive relation shape between the change orders and the cost overruns. (The sample studied of projects is a random sample of buildings projects in Syria). Changes control and reduction can minimize the excess of the cost and lost time and paid the projects to better results in the future.
Sonia Ahmed, Bassam Hasan, Fayez Jrad and Petr Dlask, 2016. Analyzing the Change Orders Impact on Building Projects. Journal of Engineering and Applied Sciences, 11: 1532-1537.