Causes of Delays During Construction Phase on Road Projects Due to - Failures of Contractor, Consultant And Employer in Addis Ababa City Road Authority.

Abstract

Construction delay is considered one of the most recurring problems in the construction industry. For the purpose of this thesis delays have an adverse impact on project success in terms of time. The effects of construction delays are not confined to the construction industry only, but influence the overall economy of a country like Ethiopia. This research was conducted to assess the causes of excessive delays in completion of the road project during the construction phase due to the failures of Employer, Consultant and Contractor in Addis Ababa City Road Authority road projects. Spearman rank correlation coefficient from Relative importance index analysis were used to test the agreement between different groups of respondents participated in questionnaires survey and to rank the three construction parties and the causes of delay based on their responsibility and importance accordingly. The research identified 65 causes of delay through literature review. The analysis from the questioner survey part was done by using a total of 51 valid questionnaires, which received back from contractors, consultants and employer (AACRA). Based on the data gathered from the questioner and analysis ,there were 40.00% of the respondents from the contractors which represent the highest percentage of the responsibility for the causes of delay. Ranked second was the Employer of about 26.15%, while the third was consultant of 23.08% of the respondents and finally 10.77% of the respondents attested that the Shared (the three parties generally shard) has the responsibility for causes of delay According to the questioner surveyed Poor financial control of the project ,Difficulties in financing project by contractor , Type of project bidding & award (lowest bidder) ,Poor site management and supervision by contractor has , Selecting inappropriate contractors ,Lack of high-technology mechanical equipment , both Ineffective scheduling of project by contractor , Inaccurate initial project scope estimate ,Ineffective control of the project progress and Contractor’s staff are not properly trained in professional construction management techniques were the top ten most important causes of delay in Addis Ababa City Road Authority road projects.