[1] Hong Kong Polytech Univ, Dept Bldg & Real Estate, Hung Hom, Kowloon, 11 Yuk Choi Rd, Hong Kong, Peoples R China
[2] Northum Bria Univ, Dept Architecture & Built Environm, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England
[3] Univ New South Wales, Sch Built Environm, Sydney, NSW 2052, Australia
[4] Kwame Nkrumah Univ Sci & Technol, Dept Construct Technol & Management, Univ PO, Kumasi, Ghana