1. Graduate Research Assistant, Dept. of Civil, Architectural, and Environmental Engineering, Univ. of Texas at Austin, Austin, TX 78712.
2. Project Engineer, Modjeski & Masters, Inc., Poughkeepsie, NY.
3. Associate Professor, Dept. of Civil, Architectural, and Environmental Engineering, Univ. of Texas at Austin, Austin, TX 78712 (corresponding author).
4. Chief Engineer, Hirschfeld Industries, Austin, TX 78730.