1. Members, ASCE
2. Honorary Member, ASCE
3. Asst. Prof., Dept. of Civ. Engrg., Texas A&M Univ., College Station, TX 77843.
4. Prof., Dept. of Civ. and Envir. Engrg., Massachusetts Inst. of Technol., Cambridge, MA 02139.
5. Edmund K. Turner Prof., Dept. of Civ. and Envir. Engrg., Massachusetts Inst. of Technol., Cambridge, MA.