1. Graduate Research Assistant, School of Civil Engineering, Purdue Univ., West Lafayette, IN 47907.
2. Engineer, Thornton Tomasetti, 650 California St., Ste. 1400, San Francisco, CA 94108.
3. Associate Professor, School of Civil Engineering, Purdue Univ., West Lafayette, IN 47907 (corresponding author).
4. Associate Professor, School of Civil Engineering, Purdue Univ., West Lafayette, IN, 47907.