1. Postdoctoral Fellow, Dept. of Civil Engineering and Applied Mechanics, McGill Univ., 817 Sherbrooke West, Montreal, QC, Canada H3A 0C3 (corresponding author).
2. Professor of Construction Engineering, Univ. of Quebec, École de Technologie Supérieure, 1100 Notre-Dame West, Montreal, QC, Canada H3C 1K3.
3. Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of California, Davis, 3161 Ghausi Hall, One Shields Ave., Davis, CA 95616.
4. Associate Professor, Dept. of Civil Engineering and Applied Science, McGill Univ., Sherbrooke West, Quebec, Canada H3A 0C3.