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Construction delays are a global phenomenon. Factors causing construction delays in construction projects differ from country to country, due to different prevailing conditions. The prevailing conditions that could exert an influence on project delivery time are political, economic, and physical factors, as well as level of technological development, management style, and construction techniques. The construction industry is a major contributor to the economy, generating both employment and wealth. However, many projects experience extensive delays, and thereby exceed initial time and cost estimates. This book presents causes of delays in project delivery through a survey of architects, clients, contractors, engineers, and quantity surveyors. Inferential statistical analysis, including linear regression, was used in the analysis of the data, the resultant statistics facilitating the development of a model after a systems thinking review of the design, procurement and construction processes, for the delivery of projects on time.

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Dr Olatunji Ayodeji Aiyetan was born in the year 1963 in Nigeria. He obtained a B.Sc degree in Building and an M.Sc degree in Construction Management at the Ahmadu Bello University, Zaria in the year 1986 and 1997 respectively. He also obtained a doctoral philosophae degree in Construction Management, at the Nelson Mandela University.

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