1. Olson Distinguished Professor, School of Civil Engineering, Purdue Univ., 550 Stadium Mall Dr., West Lafayette, IN 47907.
2. Senior Consultant, Jacobs Consultancy, 555 Airport Blvd., Suite 300, Burlingame, CA 94010.
3. Assistant Professor, Dept. of Civil, Architectural and Environmental Engineering, Illinois Institute of Technology, Chicago, IL 60616 (corresponding author).
4. Assistant Professor, School of Civil Engineering, Purdue Univ., 550 Stadium Mall Dr., West Lafayette, IN 47907.
5. President, 258 Hardwick Ct., Castle Rock, CO 80108.