1. Ph.D. Candidate, Centre for Infrastructure Engineering and Safety, School of Civil and Environmental Engineering, Univ. of New South Wales, Sydney, NSW 2052, Australia.
2. Lecturer, Dept. of Architecture, Chulalongkorn Univ., Bangkok 10330, Thailand (corresponding author).
3. Emeritus Professor, Centre for Infrastructure Engineering and Safety, School of Civil and Environmental Engineering, Univ. of New South Wales, Sydney, NSW 2052, Australia.
4. Associate Professor, Centre for Infrastructure Engineering and Safety, School of Civil and Environmental Engineering, Univ. of New South Wales, Sydney, NSW 2052, Australia.