Buildings play an important role in economic and social activities and absorb a significant amount of resources. So it is essential that buildings meet the needs of their clients. Projects commence by determining the client's needs but, unfortunately, construction projects have traditionally failed to meet the needs of modern business ([19] Latham, 1994). [9] Egan (1998, p.10) noted that "in construction the need to improve is clear. Clients need better value from their projects". Therefore any new processes that can be applied to construction projects so that clients' needs are met are worthy of consideration.