1. Danish Hydraulic Institute Water and Environment (S) Pte Ltd., Singapore 690927; formerly, PhD Student, School of Civil and Environmental Engineering, Nanyang Technological Univ., Singapore 639798.
2. Associate Professor, School of Civil and Environmental Engineering, Nanyang Technological Univ., Singapore 639798 (corresponding author). E-mail: CWKLaw@ntu.edu.sg
3. Assistant Professor, School of Civil and Environmental Engineering, Nanyang Technological Univ., Singapore 639798.