Assessment on factors affecting success of public building construction projects

Abstract

In Oromia figure of building construction projects is growing from time to time. However, it becomes tough to accomplish projects in the allocated cost, time and quality. This research was carried out to investigate factors that are significant to the success of a project; relating to cost, time, and quality performance during construction under Jimma Zone. This thesis tries to identify and evaluate the main factors. A questionnaire survey was conducted using 21 identified factors which are categorized into 3, totally 70 Questionnaires were distributed, and 61 questionnaires were returned; The results were analyzed using linear regression analysis to determine owners, contractors’ and consultants perceptions toward the identified success influencing factors in public building construction projects. Thus, inferential statistical method like correlation analysis was used to assess the relationship between factors and project success. The study found that independent variables showed significant relation with the dependent variable and the independent variables explain 26.7% of variance of the dependent variable success of construction projects in Jimma Zone. The results of the regression analysis also showed, except for quality related factors, the influence factors of project success positively. As per the regression result, from all variable time related factors has the highest beta (β=0. 331) value which specifies the most governing effect in determining the success of project; the next was cost related factors (β=0.185), and they have a strong positive significant relation. While quality related factors (β=0.223) result in negative relationship. Generally, for the public building construction projects effectively and efficiently applying important strategy is a crucial one through considering the above mentioned variables. The conclusion is drawn that reducing of cost related factors and time related factors help projects to succeed. The researcher recommended that Contractors, consultants and clients should to put their efforts on the identified key factors in relation to their magnitudes of influence. Additionally the researcher recommend Considerations on the ongoing external environment especially political instability, through different assistances to contractors will improve the success of projects also sufficient supply of materials on time and in quantity will improve project success. Finally the researcher recommends owners, contractors, and consultants including stakeholders of every project should focus on those success factors in minimizing & mitigating so as to achieve a successful project.