1. Professor, Dept. of Civil and Environmental Engineering, Univ. of California, 5731 Boelter Hall, Los Angeles, CA 90095-1593 (corresponding author). ORCID: .
2. Senior Engineer, Shannon & Wilson, Inc., 1720 W. Division St. #74, Chicago, IL 60622.
3. Professor, Dept. of Civil and Environmental Engineering, Univ. of California, 5731 Boelter Hall, Los Angeles, CA 90095-1593.