1. Ph.D. Candidate, McGill Univ., Dept. of Civil Engineering and Applied Mechanics, 817 Sherbrooke St. West, Montreal PQ, H3A 2K6, Canada.
2. Associate Professor, McGill Univ., Dept. of Civil Engineering and Applied Mechanics, 817 Sherbrooke St. West, Montreal PQ, H3A 2K6, Canada (corresponding author).
3. Assistant Professor, McGill Univ., Dept. of Civil Engineering and Applied Mechanics, 817 Sherbrooke St. West, Montreal PQ, H3A 2K6, Canada.