International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 04 | Apr 2024
p-ISSN: 2395-0072
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COMPARATIVE STUDY OF MULTI PRIME AND SINGLE PRIME CONTRACTING PERFORMANCE IN LARGE ROAD CONSTRUCTION PROJECT IN KENYA Orango, E. O., Ajwang’, P. & Njuki, L. ----------------------------------------------------------------------------***-------------------------------------------------------------------------Abstract Infrastructural developments in Kenya have been at its peak and this has led to rise of large construction projects in the country especially in Nairobi. Due to this boom in construction, there has been need to ensure that contractors fulfil their obligations that is to ensure that quality is achieved within the budget and time limits. There has been a delay in delivery of various large projects and this has resulted to increase in construction costs and even further having impact on the quality. This can be attributed to the contracting method employed in the execution of the projects. The study sought to determine whether multiple prime contracting was the best delivery method for road projects in Kenya. To attain the overall objective, the study specifically sought to to establish which is the best contracting method between multi prime and single prime is cost effective; to determine which contracting method between single prime and multi-prime is superior in relation to schedule; to establish which contracting method promotes contractor capacity building. The study employed an exploration and evaluation research design, combining both qualitative and quantitative research techniques. Primary data was collected by use of structured questionnaires from a target population of 400. A sample size of 86 respondents was generated using formula from Yamane (1967), from Engineer, site Managers, Contractors, Administrators, Architects, and Foremen. Data was analyzed both descriptively and inferentially using SPSS version 25. The study achieved a 79.0% response rate. Based on descriptive analysis, 36% of the projects were multi prime while 64% being single prime. The results indicated that 58.40% against 41.6% of the respondents agreed that there was delay in completion of roads projects in Nairobi City County. moreover, 38.30% of respondents felt that the projects were good, followed by excellent which had 20% of the participants, and then 18.30% of the participants felt that their projects completion rate was fair, while those who felt poor comprised 13.30% of the participants. Inferentially, 69.6% of the total variation in the values of Completion of road projects is explained by the combination of the independent variables.
Key words: Construction, Multi prime, Single Prime, Quality 1.
INTRODUCTION
Large constructions in Kenya have been at its peak in the recent past, and as a result, it has led to a delay in delivery of various large projects and this has resulted to increase in construction costs and even further having impact on the quality. This can be attributed to the contracting method employed in the execution of the projects. Most of the large infrastructural developments are vision 2030 flagship projects and to realize this a mechanism must be put in place so as to ensure that the projects are delivered as fast as possible and within the budget. Prime contracting has been the prevalent conventional way of contracting method in Kenya. This is where the client or the developer chooses one contractor so as to execute the various designs or the works. Due to rise in upcoming large construction projects there has been need to have the projects delivered on time. Research carried out by Kim (2017) focused on multi-prime contracting, as an alternative to general contractor contracts, in this study, two pilot building projects were executed under Multi prime contracts with direct owner management. The project performance in relation to construction costs, schedule, defects and participant satisfaction under the Multi prime contracts was compared to a general contractor contract which is single prime (SP) contracting, results from the research shows that there was a reduction in the construction costs but not as much as expected (8% reduction). Schedule and defects were not so different from those under a GC contract. Research carried out by Memon et al., (2011) shows that technical factors lead to cost overruns, including lack of experience, the size of the project, mistakes in design, overall price fluctuations, and inaccurate estimations. It is noted that size of the
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