1. Professor, Dept. of Building, Civil, and Environment Engineering, Concordia Univ., 1455 DeMaisonneuve Blvd. W., Montreal PQ, Canada H3G IM8. E-mail: hanna@civil.concordia.ca
2. Research Associate, Dept. of Building, Civil, and Environmental Engineering, Concordia Univ., 1455 DeMaisonneuve Blvd. W., Montreal PQ, Canada H3G 1M8.