1. Ph.D. Candidate, Dept. of Civil Engineering, Univ. of Waterloo, Waterloo, ON, Canada.
2. Professor and Canada Research Chair, Dept. of Civil Engineering, Univ. of Waterloo, Waterloo, ON, Canada (corresponding author).
3. Distinguished Professor Emeritus, Dept. of Civil Engineering, Univ. of Waterloo, Waterloo, ON, Canada.