1. Structural Engineer, Constructive Engineering Design, 9400 Reeds Rd., Suite 200, Overland Park, KS 66207-2531.
2. Design Engineer, JVA, Inc., 47 Cooper Creek Way, Suite 328, P.O. Box 1860, Winter Park, CO 80482.
3. Assistant Professor, Dept. of Civil Engineering, New Mexico State Univ., Las Cruces, NM 88003 (corresponding author).
4. Associate Professor, Dept. of Civil Engineering, New Mexico State Univ., Las Cruces, NM 88003.