1. Senior Lecturer, Dept. of Civil and Environmental Engineering, Faculty of Engineering, The Univ. of Auckland, Private Bag 92019, Auckland Mail Centre, Auckland 1142, New Zealand (corresponding author). Email: hossam.abuelnaga@gmail.com
2. Professor, School of Engineering and Technology, Asian Institute of Technology, P.O. Box 4, Khlong Luang, Pathumthani 12120, Thailand. E-mail: bergado@ait.ac.th
3. Associate Professor, Dept. of Civil Engineering, Building 60, Monash Univ., Melbourne, Vic. 3800, Australia. E-mail: malek.bouazza@eng.monash.edu.au