1. Ph.D. Candidate, Civil, Environmental, and Architectural Engineering Dept., Univ. of Kansas, Lawrence, KS 66045-7609.
2. Professor, Civil, Environmental, and Architectural Engineering Dept., Univ. of Kansas, Lawrence, KS 66045-7609 (corresponding author).
3. Professor, Civil, Environmental, and Architectural Engineering Dept., Univ. of Kansas, Lawrence, KS 66045-7609.