ASSESSMENT OF TIME LINE PERFORMANCE OF BUILDING PROJECTS IN NIGERIA
Kunya Sani Usman1 and Lawal, Abdulkadir Babale2
Building Programme, ATBU, Bauchi
Department of Quantity Surveying, Nuhu Bamalli Polytechnic, Zaria
abdumi@gmail.com/snkunya@gmail.com
ABSRACT
Construction time line has been acknowledged as important performance criteria for measuring success across building projects. Delays are treating in construction industry, its magnitude being varied considerably from project to project. The aim of this research work was to assess the factors affecting time line performance of building projects in Nigeria and ways for improving them. To achieve this, data for the study was collected through a structured questionnaire survey which investigated construction professionals working in clients, consultants and contracting organizations to assess the effects of identified factors affecting time performance of building projects. In order to achieve the objectives, an extensive literature review was carried out. Thirty-six (36) factors that are likely to affect time performance were identified. Data collected were analyzed using relative importance index. Findings of the study revealed that ten (10) key factors as having stronger effect on the time performance of building project out of the thirty-six (36) different factors identified from reviewed literatures. Factors having critical effect on time performance of building projects among others includes ineffective planning and scheduling of project by contractors, change order by owners during construction and late in revising and approving design documents by owners, improper construction methods used by contractors. To improve the time performance of building projects, effective planning, progress payments, minimizing change orders and early review and approval of designs should be considered by clients, consultants and contractors.
Keywords: Building projects, delays, time performance