1. Engineer, AON Insurance, 200 E. Randolph St., Chicago, IL 60601.
2. Professor and Chairman, Dept. of Civil, Architectural, and Environmental Engineering, 3201 S. Dearborn St., Illinois Institute of Technology, Chicago, IL 60616 (corresponding author). E-mail: mohammadi@iit.edu
3. Associate Professor, Dept. of Civil, Architectural, and Environmental Engineering, 3201 S. Dearborn St., Illinois Institute of Technology, Chicago, IL 60616.