1. Assistant Professor, Dept. of Civil Engineering, Royal Military College of Canada, P.O. Box 17000, Station Forces, Kingston, ON, Canada K7K 7B4 (corresponding author).
2. Professor, Dept. of Civil, Geological, and Mining Engineering, Polytechnique Montreal, P.O. Box 6079, Station Centre-Ville, Montreal, QC, Canada H3C 3A7.