1. Fellow, ASCE
2. Member, ASCE
3. Res. Sci., School of Engrg. and Appl. Sci., The George Washington Univ., Washington, DC 20052.
4. Wiley Prof., Dept. of Civ. Engrg., Texas A&M Univ., 3136 TAMU, College Station, TX 77843-3136.
5. Prof., School of Engrg. and Appl. Sci., The George Washington Univ., Washington, DC 20052.