1. Department of Civil, Architectural, and Environmental Engineering, University of Texas, Austin, TX 78712
2. William Lettis and Associates, 1777 Botelho Drive, Suite 262, Walnut Creek, CA 94596
3. Department of Structural Engineering, University of California at San Diego, La Jolla, CA 92093
4. Department of Civil Engineering, University of Tokyo, Tokyo, Japan
5. Department of Civil Engineering, Chuo University, Tokyo, Japan
6. Department of Civil Engineering, University of Southern California, Los Angeles, CA 90089