| Abstract: | Delay is one of the biggest problems often experienced on construction project sites. Delays can instigate negative effects such as increased costs, loss of productivity and revenue, many lawsuits between owners and contractors and contract termination. The aim of this project is to investigate the causes and effects of construction delay in Project 08 Branch Office. Among 13 projects branch office sites of condominium houses in Addis Ababa, Project 08 Branch office housing development construction was chosen purposively for this study because it is the most delayed project compared to its baseline plan, which was planned to be completed in 18 months but it has already taken 96 months with 99.01% performance. A structured questionnaire in Likert scale was used in data collection. 114 project team members filled the questionnaire and 6 of them took part in the interview. It was done based on descriptive and explanatory type of research. The research adopts both mixed methods research approach. This research categorized the causes of delay under six main groups of client related, consultant related, contractor related, labor and equipment related, material related and external related and then the data obtained were analyzed using descriptive statistics and multiple linear regression methods. Descriptive statistics of frequency mean and percentage tables are used to present the results of the study. Based on result, out of the top six major causes of delay in construction 3.24 of problems were materials related causes, 2.89 of problems were client related causes and 2.37 of problems were Contractor related problems. This indicated that the majority of construction delay occurred due to materials, client and contractor related causes. In addition, the top major effects of delay were; time overrun and cost overrun of the project were the most significant effect of delay in this project 08. And 88.3% of the variance on effect of construction delay had been significantly explained by client, contractor, consultant, materials, equipment’s, labor and external related causes of construction delay in project 08 branch office. |
