1. Professor, Dept. of Civil and Materials Engineering, Univ. of Illinois at Chicago, 2095 Engineering Research Facility, 842 West Taylor St., Chicago, IL 60607 (corresponding author).
2. Bridge Structural Engineer.
3. Graduate Research Assistant, Dept. of Civil and Materials Engineering, Univ. of Illinois at Chicago, 950 S. Halsted, SEL 1050, Chicago, IL 60607.