1. Member, ASCE
2. Student, Civ. Engrg. Dept., Washington Univ., Campus Box 1130, 1 Brookings Dr., St. Louis, MO 63130.
3. Asst. Prof., Dept. of Civ. and Envir. Engrg., 1075 Thirteenth St. South, Ste. 120, Univ. of Alabama at Birmingham, Birmingham, AL 35294-4440.