[1] Hong Kong Polytech Univ, Dept Bldg & Real Estate, Hong Kong, Peoples R China
[2] Univ Washington, Dept Construction Management, Seattle, WA 98195 USA
[3] Birmingham City Univ, Dept Built Environm, Birmingham B4 7XG, England
[4] Univ Johannesburg, Fac Engn & Built Environm, ZA-2092 Johannesburg, South Africa
[5] SD Dombo Univ Business & Integrated Dev Studies, Dept Construct Studies, Wa POB 64, Wa, Ghana