1. Professor, Dept. of Civil and Materials Engineering, Univ. of Illinois at Chicago, 842 West Taylor St., Chicago, IL 60607 (corresponding author).
2. Graduate Research Assistant, Dept. of Civil and Materials Engineering, Univ. of Illinois at Chicago, 842 West Taylor St., Chicago, IL 60607.
3. Associate Professor, Dept. of Civil and Environmental Engineering, 428 S. Shaw Ln., Michigan State Univ., E. Lansing, MI 48824.