1. Associate Professor, Glenn Dept. of Civil Engineering, Clemson Univ., 320 Lowry Hall, Clemson, SC 29634 (corresponding author).
2. Civil-Geotechnical Engineer, URS Corporation, 201 Willowbrook Blvd., Wayne, NJ 07470.
3. Graduate Student, Glenn Dept. of Civil Engineering, Clemson Univ., 320 Lowry Hall, Clemson, SC 29634.
4. Geotechnical Specialist, AMEC Environment & Infrastructure, 4000 Meadow Lake Dr., Suite 125, Birmingham, AL 35242.