Abstract
The study investigates the causes of delays in construction projects in the Makkah region of Saudi Arabia. The objective is to determine the most significant factors from the consultant designer and supervisor’s perspectives. This study is part of a series designed to explore the causes of delays from the perspective of different stakeholders in the construction industry. A comprehensive survey of 69 questions has explored various possible delay factors. All factors are grouped into eight categories based on their relevance and orientation. The factors were recorded and ranked by their relative importance index concerning their impact and frequency. The top three factors in their impacts are found to be (1) difficulties in financing the project, (2) poor management of the site and lack of distribution of tasks (3) low productivity of labor. The first two are delay factors related to the contractor group, and the third is related to the labor group. The highest in frequency relative importance index is (1) delays related to sub-contractor’s work, (2) lack of experience of the owner in the approval of the supervision team and (3) inadequate estimate of task duration and scheduling, inadequate training, and adopting new techniques. In the overall average of the impact index of all groups, the highest was the delays due to the contractor group, followed by delays due to the designer group, and finally, delays related to the labor group. The overall average of the frequency index of the whole group seems relatively low. The study’s novelty lies in the large number of delay factors that have been investigated, by collecting and analyzing actual data, focusing separately on the opinions of all stakeholders, and then comparing them to find objective results related to delays in construction projects in the Makkah region.
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