ASSESSMENT OF THE RELATIVE IMPORTANCE OF FACTORS OF TIME OVERRUN IN BOLE ARABSA PROJECT 7, ADDIS ABABA

Abstract

Building construction is one of the largest industries in Ethiopia and plays an important role in overall economy of the country. However, time overrun is the major challenge to the building construction industry in Ethiopia. The objective of this study is to assess the relative importance of factors of time overrun in bole arabsa project 7and identifying the responsible parties. The project is constructed by Addis Ababa Housing Development and Administration Bureau. To achieve this objective this study used structured questionnaires for survey. A reliability test was conducted to test the questionnaires. The respondents selected using stratified sampling technique. The survey was conducted with 125 participants of building construction project team as a sampling of population from client (from two departments namely infrastructure and building construction), contractors (owners, Engineers and foreman’s) and consultant side in bole arabsa project 7. After collecting the questionnaires the data was analyzed using MS excel and relative important index (RII) and mean value was applied to prioritize the delay factors The result discovered and showed that among the six grouped factors of time overrun consultant related factors ranked in the 1st level with (RII=0.7699) followed by external related factors with (RII=0.768), the 3rd most influential factors are related to material and equipment with (RII=0.726) ,in the 4th contractor related factors are ranked with (RII=0.724) , followed by client related factors as the 5th ranked effect with (RII=0.717) and finally labor related factors are ranked as the 6th influential effects of time overrun with (RII=0.703). Among those groups the top 15 factors of time overrun were identified as escalation of material price, delays in material supply, changes in exchange rate, delays in progress payments, changes in drawing, long waiting time for approval of drawings, inadequate early planning and scheduling of the project, economic condition, inexperience sub-contracts, design change and modification by client, delay in decision making by consultants, poor labor productivity and shortage of skills, changes in selected material price, delays in making decision by client and poor site management and supervision by contractors. Recommendation is given to minimize project time overrun.