1. Professor, Dept. of Structural Engineering, Univ. of California–San Diego, La Jolla, CA 92093 (corresponding author).
2. Development Engineer, Dept. of Structural Engineering, Univ. of California–San Diego, La Jolla, CA 92093.
3. Staff Engineer, Geosyntec Consultants, 2100 Main St., Huntington Beach, CA 92648.
4. Technical Support Engineer, CETCO, 2870 Forbs Ave., Hoffman Estates, IL 60192.