1. John Curtin Distinguished Professor, School of Built Environment, Curtin Univ., GPO Box U1987, Perth, WA 6845, Australia (corresponding author).
2. Professor, School of Built Environment, Curtin Univ., GPO Box U1987, Perth, WA 6845, Australia.
3. Senior Lecturer, School of Built Environment, Curtin Univ., GPO Box U1987, Perth, WA 6845, Australia.
4. Associate Profesor, School of Civil and Environmental Engineering, Nangyang Technological Univ., Singapore.