1. Professor, Dept. of Civil Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180 (corresponding author).
2. Technical Development Engineer, BMT Commercial USA Inc., 81 Prospect St., Brooklyn, NY 11201.
3. Structural Engineer, WJE Associates, 2 Trap Falls Rd., Shelton, CT 06484.
4. Undergraduate Student, Rensselaer Polytechnic Institute, Troy, NY 12180.