1. Project Engineer at GEI Consultants Inc., Dept. of Civil and Environmental Engineering, Univ. of California, Berkeley, CA 94612 (corresponding author). ORCID: .
2. Professor Emeritus, Dept. of Civil and Environmental Engineering, Cornell Univ., Ithaca, NY 14850.
3. Professor, Dept. of Civil and Environmental Engineering, Univ. of California, Berkeley, CA 94720.