1. Associate Professor, Dept. of Civil, Architectural and Environmental Engineering, Univ. of Texas at Austin, 301 E. Dean Keeton, ECJ 5.210, Austin, TX 78712.
2. Former M.S. Student, Dept. of Civil, Architectural, and Environmental Engineering, Univ. of Texas at Austin, 301 E. Dean Keeton, ECJ 5.404, Austin, TX 78712.
3. Professor, Dept. of Civil, Architectural, and Environmental Engineering, Univ. of Texas at Austin, 301 E. Dean Keeton, ECJ 5.202, Austin, TX 78712.
4. Ph.D. Candidate, Dept. of Civil, Architectural, and Environmental Engineering, Univ. of Texas at Austin, 301 E. Dean Keeton, ECJ 5.412, Austin, TX 78712 (corresponding author).