1. PhD Candidate, Dept. of Civ. Engrg., Univ. of Waterloo, Waterloo, ON, Canada N2L 3G1.
2. Assoc. Prof., Dept. of Civ. Engrg., Univ. of Waterloo, Waterloo, ON, Canada N2L 3G1.
3. Prof., Dept. of Civ. Engrg., Univ. of Waterloo, Waterloo, ON, Canada N2L 3G1.