1. Assistant Professor, Dept. of Civil and Architectural Engineering, Qatar Univ., P.O. Box 2713, Doha, Qatar; formerly, Structural Project Manager, AECOM, Specialty Practices Group, 20 Exchange Place, 12th Fl., New York, NY 10005 (corresponding author).
2. Emeritus Professor of Structural Steel Design, Civil and Environmental Engineering, Virginia Tech, 200 Patton Hall, Blacksburg, VA 24061.