1. Ph.D. Candidate, Dept. of Building, Civil and Environmental Engineering, Concordia Univ., Canada H3G 1M8.
2. Research Associate, Dept. of Building, Civil and Environmental Engineering, Concordia Univ., Canada H3G 1M8; presently, on leave, Assistant Professor, Dept. of Structural Engineering, Ain Shams Univ., Egypt.
3. Professor, Dept. of Building, Civil and Environmental Engineering, Concordia Univ., Canada H3G 1M8 (corresponding author).