Assessment on Causes of Substation Construction Delays: (The case of EEP-Etsip2 lot I project)
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Date
2018-08-14
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Addis Ababa University
Abstract
Construction delays can be defined as the late completion of work compared to the planned schedule or contract schedule. Construction delays can be minimized only when their cause are identified. The objective of this study was to identify the major causes of substation construction delays; This study was carried out based on literature review and a questionnaire survey and unstructured interview and owns observation. A total of forty six delay factors, categorized in four groups, were identified as cause of substation construction delays. The literature review has included effects of construction delays in order to emphasize how important is to identify the causes of delay to minimize consequences of delay .The questionnaire survey was distributed to the target respondents of client and contractor groups, twenty one (21) respondents of project managers ,site managers ,site supervisor and office engineers were participated. The objectives of the study were successfully achieved. The top ten main causes substation construction delay identified using RII from the respondent selection,(1) Poor and unorganized procurement ,(2)Delays in sub-contractors work ,(3)Incompetent consultant staff, (4)Difficulty to run the project due to poor cash flow of the contractor ,(5) Inadequate experience of consultant (6)Poor management of the project by the contractor (7)Poor planning and scheduling of project, (8) Lack of appropriate machineries and tools in work place, (9)Late procurement of electromechanical equipments ,(10)Design error that lead to wrong construction & rework.
From the group cause analysis Contractor-related delays was ranked the most significant category that cause delays followed by consultant related and client related delays. The paper includes recommendation for contractor and client for betterment of future performance.
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construction projects, cause of delay, Relative importance index (RII)