1. Institute Professor, Dept. of Civil and Environmental Engineering, Rensselaer Polytechnic Institute, 110 8th St., JEC 4049, Troy, NY 12180 (corresponding author).
2. Professor, Dept. of Civil and Environmental Engineering, Univ. at Buffalo, 212 Ketter Hall, Buffalo, NY 14260.
3. Geotechnical Engineer, BGC Engineering Inc., Suite 500-1045 Howe St., Vancouver, BC, Canada, V6Z 2A9.
4. Staff Geotechnical Engineer, CH2M Hill Inc., Suite 800, 6 Hutton Center Dr., Santa Ana, CA 92707.
5. Professor, Dept. of Structural Engineering, Univ. of California, San Diego, MC-0085, La Jolla, CA 92093.