1. Professor, Dept. of Civil, Environmental, and Architectural Engineering (CEAE), Univ. of Kansas, Lawrence, KS 66045-7609 (corresponding author).
2. Geotechnical Project Manager, Terracon Consultants, Inc., 1450 5th St. West, North Charleston, SC 29405; formerly, Graduate Research Assistant, GSI fellow, Dept. of Civil, Environmental, and Architectural Engineering (CEAE), Univ. of Kansas, Lawrence, KS 66045-7609.
3. Lecturer, Institute of Geotechnical Engineering, Southeast Univ., Nanjing 210096, China.