1. Professor, Dept. of Civil Engineering, Clemson Univ., Clemson, SC 29634-0911; Chair Professor, Dept. of Civil Engineering, National Central Univ., Chung-Li, Tao-Yuan 32011, Taiwan (corresponding author). E-mail: hsein@clemson.edu
2. Staff Geotechnical Engineer, Golder Associates, Inc., 24 Commerce St., Suite 430, Newark, NJ 07102.
3. Assistant Project Engineer, Ardaman & Associates, 8008 S. Orange Ave., Orlando, FL 32809.
4. Research Associate, Dept. of Civil Engineering, Clemson Univ., Clemson, SC 29634-0911.
5. Technical Staff, ANSYS, Inc., Probabilistic Design and Optimization Group, Southpointe, 275 Technology Dr., Canonsburg, PA 15317.