1. Graduate Research Assistant, Dept. of Civil, Architectural, and Environmental Engineering, Univ. of Texas at Austin, ECJ Bldg., Ste. 6.506 (C1761), Austin, TX 78712 (corresponding author).
2. Professor, Dept. of Civil, Architectural, and Environmental Engineering, Univ. of Texas at Austin, ECJ Bldg., Ste. 6.10 (C1761), Austin, TX 78712.
3. Research Associate, Dept. of Civil, Architectural, and Environmental Engineering, Univ. of Texas at Austin, ECJ Bldg., Ste. 6.10 (C1761), Austin, TX 78712.