1. Associate Professor, Dept. of Civil Engineering, Kansas State Univ., Manhattan, KS 66506-5000 (corresponding author).
2. Lecturer, School of Civil and Environmental Engineering, Univ. of New South Wales, Sydney, NSW 2052, Australia.
3. Professor and Associate Dean for Research, School of Civil and Environmental Engineering, Univ. of New South Wales, Sydney, NSW 2052, Australia.