1. Professor, Dept. of the Built Environment, National Univ. of Singapore, 4 Architecture Dr., Singapore 117566 (corresponding author). ORCID: .
2. Quantity Surveyor, Dept. of Contracts, Lum Chang Building Contractors Pte Ltd., Singapore 159150.
3. Senior Lecturer, Dept. of Civil and Environmental Engineering, The Univ. of Auckland, Auckland 1142, New Zealand.
4. Ph.D. Candidate, Dept. of Civil and Environmental Engineering, The Univ. of Auckland, Auckland 1142, New Zealand.
5. Professor, School of Built Environment, Univ. of New South Wales (UNSW), Sydney, NSW 2052, Australia. ORCID: .