1. School of Property Construction and Project Management, Royal Melbourne Institute of Technology, Melbourne, Victoria 3000, Australia (corresponding author).
2. Dept. of Construction Management, Cooperative Research Centre for Construction Innovation, Curtin Univ. of Technology, GPO Box 1987, Perth, WA 6845, Australia.
3. Dept. of Architecture, Building, and Planning, Univ. of Melbourne, Parkville, Victoria 3010, Australia.