1. Asst. Prof., Univ. of California, Dept. of Civ. and Envir. Engrg., 109 McLaughlin Hall, Berkeley, CA 94720.
2. Formerly Grad. Student Res., Purdue Univ., School of Civ. Engrg., West Lafayette, IN 47907.
3. Grad. Student Res., Purdue Univ., School of Civ. Engrg., West Lafayette, IN.