1. Design Engineer, Degenkolb Engineers, 600 University Ave., Suite 760, Seattle, WA 98101 (corresponding author).
2. Associate II, Wiss, Janney, Elstner Associates, Inc., 10 South LaSalle St., Suite 2600, Chicago, IL 60603.
3. Professor, Lyles School of Civil Engineering, Purdue Univ., 1040 S. River Rd., West Lafayette, IN 47907.