....................................97 6 CHAPTER 1- INTRODUCTION Over time the Architecture, Engineering, and Construction (AEC) industry has become more complex and demanding. Clients are no longer expecting only to meet schedule, cost and quality objectives but also to guarantee safety, human satisfaction and minimal negative environmental impact (Vanegas, DuBose and Pearce 1996). Traditional construction project delivery methods and models have failed to satisfy the expectations of both contractors and clients. The main problems and their causes are analysed in the second chapter of this thesis. Thus people in the AEC industry, including scholars and practitioners, have come together to find new solutions for delivering projects and fulfilling high requirements. 1.1 Problem formulation
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