Study of factors affecting construction quality, cost, and time in building project using analytical hierarchy process (AHP)

Abstract

The building construction is a very complex project which requires the collaboration of many project participants and various resources. It is important to identify and mitigate the problems in the project that can hamper the performance of construction such as delay, cost overruns, and low quality. The objective of the study is to determine the factors in building construction projects that can affect cost, quality, and time performance. The method used in this research is the Analytical Hierarchy Process (AHP) to analyze the dominant factors causing the constraints. A structured hierarchical matrix was developed based on a preliminary identification of factors affecting time, cost, and quality, and then evaluated by experienced professionals during the survey. The data obtained from the questionnaires were processed using Expert Choice 11 software. Based on the results of the study, it was found that there are five dominant factors affecting the time, cost, and quality constraints, such as the design changes from the project owner during construction phases, planning error, delay in payment, work plan changes during construction phases, and unpredictable bad weather condition. This study also presented the mitigations to these factors, which were obtained both from the interviews with experts and also from the previous literature studies.