1. Fellow, ASCE
2. PhD Candidate, Dept. of Civ. and Envir. Engrg. and Geodetic Sci., The Ohio State Univ., 470 Hitchcock Hall, 2070 Neil Ave., Columbus, OH 43210.
3. Prof., Dept. of Civ. and Envir. Engrg. and Geodetic Sci., The Ohio State Univ., 470 Hitchcock Hall, 2070 Neil Ave., Columbus, OH.