1.0 Introduction
1.1 Background of Study
The construction industry is a unique and dynamic industry of the economy; in Nigeria it accounts for over 1.4% of its Gross Domestic Product and also it is a large employer of labour (Oluwakiyesi, 2011). But over the years it has been criticized for its expensive and wasteful nature, low productivity, quality problem and project delay. The reasons for all these being are as varied, diverse and complex as the products of this industry itself. The process of developing a project from initial investment appraisal to completion and into use is complex (Flanagan and Norman, 2003).
It is a generally recognized fact that those within the construction industry are continually faced with a variety of situations involving many unknown, unexpected, frequently undesirable and often unpredictable factors. These uncertain situations according to Turner (1990) have made many projects to fall short of the desired objectives of cost, time, quality and satisfaction. Project Management Institute (2000) defines risk as uncertain event or condition that if it occurs has a positive or negative effect on the project objective. Bufaied (1987) also describes risk in relation to construction as a variance in the process of a construction project whose variation results in uncertainty as to the final cost, duration and quality of the project.
There are many risks involved in construction projects, which could be attributed to a number of reasons; amongst them are the nature of the construction process, the complexity and time-consuming design and construction activities, the involvement of a multitude of people, from different organisations, with different skills and interests, all resulting in accumulative associated risks for the project. Hence, a great deal of effort is required to co-ordinate the wide range of activities that are undertaken (Chapman and Ward, 1997; Shen, 1999). As the size and complexity of the projects have increased, the ability to manage risks throughout the construction processes has become a central concern in the attempt to prevent unwanted consequences (Maytoren et al., 2007).
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