Author(s)

I. Othman, M. Napiah & N. S. Potty

Abstract

Case studies of infrastructure projects are carried out using qualitative analysis methods and findings on the factors causing successful completion and sustainable construction are presented. There are three distinct ways to do this namely (1) management at pre-design stage, (2) management during the construction phase and (3) by interviewing experts. The element optimization technique has been applied to the project under the management at pre-design stage. The analysis revealed that the critical component is traffic diversion management which has a greater than 17% presence. The construction of the bridge over Kinta River and environmental protection works have both nearly 17% presence for project 1. For project 2, the analysis revealed that critical components are environmental protection works and earthworks which have greater than 18% presence. This research study suggests the adoption of few design optimizations and to reduce the complexity and ease of their implementation in the field. The analysis for management during the construction phase has arrived at the findings that activities of the project are behind time due to improper planning in carrying out works such as spreading, grading and compacting suitable material to form embankments, importing suitable fill as surcharge, piling for embankment, box culverts, the bridge over Kinta River, the bridge over Lereh River and the pavement. The top three riskiest factors for obstructing successful completion and sustainable construction from the point of view of experts, inclusive of client, consultant and contractor are \“mis-management of the project by the three parties namely contractor, consultant and owner leading to unsuccessful completion and unsustainable construction”, \“shortage and lack of quality materials and

Keywords

successful completion, sustainable construction, component optimisation, construction progress reports, qualitative analysis