1. Professor, Dept. of Building, Civil and Environmental Engineering, Concordia Univ., 1455 de Maisonneuve Blvd. West, Montreal PQ, Canada H3G 1M8 (corresponding author). E-mail: hanna@civil.concordia.ca
2. Research Associate, Concordia Univ., 1455 de Maisonneuve Blvd. West, Montreal PQ, Canada H3G 1M8.