1. Department of Construction Technology and Management, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana;
2. Department of Building and Real Estate, The Hong Kong Polytechnic University, Kowloon, Hong Kong;
3. School of Architecture and Built Environment, University of Adelaide, Adelaide, Australia;
4. Department of Construction Technology and Management, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana