1. Member, ASCE
2. Res. Assoc., Dept. of Civ. and Envir. Engrg., Univ. of Illinois at Urbana-Champaign, 205 N. Mathews Ave., Urbana, IL 61801.
3. Prof., Dept. of Civ. and Envir. Engrg., Univ. of Illinois at Urbana-Champaign, 205 N. Mathews Ave., Urbana, IL.