1. Assistant Professor, George Mason Univ., Fairfax, VA 22030 (corresponding author).
2. Structural Engineer, SBM Offshore, 1255 Enclave Pkwy., Houston, TX 77077.
3. Professor, J. Neils Thompson Teaching Fellowship, Univ. of Texas at Austin, Austin, TX 78712.
4. Professor, Dewitt C. Greer Professorship in Civil Engineering, Univ. of Texas at Austin, Austin, TX 78731.
5. Chief Bridge Engineer, Hirschfeld Industries, 5910 Courtyard Dr. #210, Austin, TX 78731.