1. Ph.D. Candidate, Dept. of Civil, Architectural and Environmental Engineering, Univ. of Texas at Austin, 301 E. Dean Keeton St. C1752, Austin, TX 78712-1094 (corresponding author).
2. Associate Professor, Mrs. Pearlie Dashiell Henderson Centennial Fellowship in Engineering, Construction Engineering and Project Management Program, Dept. of Civil, Architectural and Environmental Engineering, Univ. of Texas at Austin, 301 E. Dean Keeton St. C1752, Austin, TX 78712-1094.