1. Geotechnical Engineer, HDR Inc., 4828, Loop Central Dr Ste 800, Houston, TX 77081 (corresponding author).
2. Associate Professor, Zachry Dept. of Civil and Environmental Engineering, Texas A&M Univ., College Station, TX 77843.
3. Senior Staff Engineer, Terracon, 11133 Interstate 45 S., Conroe, TX 77302.
4. Distinguished Professor, Zachry Dept. of Civil and Environmental Engineering, Texas A&M Univ., College Station, TX 77843-3136.