1. Assistant Professor, Structural Engineering Dept., Ain Shams Univ., Cairo, Egypt. E-mail: sai23@drexel.edu
2. Assistant Professor, Civil Engineering Dept., McMaster Univ., Hamilton, ON, Canada L8S 4L7 (corresponding author). E-mail: eldak@mcmaster.ca
3. Professor, Civil and Architectural Engineering Dept., Drexel Univ., Philadelphia, PA 19104. E-mail: elgaaly@drexel.edu