1. Doctoral Candidate, Dept. of Civil Engineering, Univ. of Washington, Seattle, WA 98195 (corresponding author).
2. Associate Professor, Dept. of Civil Engineering, Univ. of Washington, Seattle, WA 98195.
3. Assistant Professor, Dept. of Civil Engineering, Univ. of Washington, Seattle, WA 98195.
4. Professor, Dept. of Civil Engineering, Univ. of Washington, Seattle, WA 98195.
5. Former Graduate Student, Dept. of Civil Engineering, Univ. of Washington, Seattle, WA 98195.