ASSESSING FACTORS AFFECTING DESIGN AND CONSTRUCTION INTERFACE IN CIVIL ENGINEERING PROJECTS
Abstract
Design and construction interface problems impede the successful delivery of construction projects within the specified time, cost and quality. During the project, many interface problems may arise and their severities may vary and affect the overall project performance. This study assessed factors affecting the Design and Construction interface in Civil Engineering Projects with a view to determining the most important factors contributing to interface problems. This was achieved through a literature review, pilot study and administration of questionnaires. Data collected were analysed using descriptive statistics. The means and standard deviations of the responses were calculated. The results revealed that the five most severe interface factors affecting the design and construction interface in civil engineering projects in Nigeria are Delaying of due payments, Delay in approvals by government authorities, Inadequate planning and/or scheduling, lack of involvement of the contractor during the design phase and lack of specialist construction manager. The three most suitable interface mitigants are Early decision making by project parties, Provision of standard guidelines for stipulated drawings and safety considerations. It is recommended amongst others that approvals by government should be issued early and adequate planning and scheduling should be made before commencement of any project.
Keywords: interface problems, interface factors, civil engineering projects, statistical analysis
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