Complexity Factors During Pre-Construction Stage Affecting Quality Performance in Infrastructure Projects

Many construction projects show lack of performance due to numerous complexity factors. Literature review indicates that study related to complexity factors in infrastructure projects is still lacking. The purpose of this paper is to identify the most significant complexity factors during pre-construction stage (design, tender and contract award) that affect quality performance of infrastructure projects. Based on variables identified from previous studies, a survey questionnaire was designed to gain responses and assessment in terms of the impacts of the identified complexity factors toward quality performance. A preliminary study was carried out based on 37 respondents’ feedbacks to determine the level of importance of these factors using relative importance index (RII). The results show that all identified complexity factors are important and have impacted the quality performance in infrastructure projects. Based on RII, the top rank complexity factors during design, tendering and contract award phases are insufficiency in the collection and review of drawings, award contract to a low qualified bidder with non-compliance and delay in preparing technical specifications/scope of work/terms of reference, respectively. This study contributes empirically towards establishing an integrated complexity assessment model to manage infrastructure project from design to handing-over stage to ensure successful project performance in terms of time, cost and quality in line with the Eleventh Malaysia Plan within the construction industry.

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