1. Associate Professor, Dept. of Civil Engineering, The Univ. of Hong Kong, Pokfulam, Hong Kong.
2. Assistant Professor, Dept. of Building, National Univ. of Singapore, Singapore.
3. Post Doctoral Fellow, Dept. of Civil Engineering, The Univ. of Hong Kong, Pokfulam, Hong Kong (corresponding author).
4. Quantity Surveyor, Gammon, Singapore.