1. Associate Professor, Dept. of Civil Engineering, 151C Raymond Bldg., Univ. of Kentucky, Lexington, KY 40506-0281 (corresponding author).
2. Field Engineer, Messer Construction, 854 W. Main St., Lexington, KY 40508.
3. Civil Engineer EIT, Kimley-Horn and Associates, Inc., 501 Independence Pkwy., Suite 300, Chesapeake, VA 23320.
4. Project Engineer, Safety Systems of America, Inc., 42030 Koppernick Rd., Suite 315, Canton, MI 48187.