1. Ph.D. Candidate, Civil Engineering Dept., Univ. of Toronto, 35 St. George St., Toronto, ON, Canada M5S 1A4 (corresponding author).
2. Professor, Civil Engineering Dept., Univ. of Toronto, 35 St. George St., Toronto, ON, Canada M5S 1A4.
3. Ph.D. Candidate, Civil Engineering Dept., Univ. of Toronto, 35 St. George St., Toronto, ON, Canada M5S 1A4.