1. Research Scientist, ICSET/Western Kentucky Univ., 2413 Nashville Rd., Bowling Green, KY 42101. E-mail: chin-min.cheng@wku.edu
2. Graduate Research Assistant, Dept. of Civil and Environmental Engineering and Geodetic Science, Ohio State Univ., 470 Hitchcock Hall, 2070 Neil Ave., Columbus, OH 43210. E-mail: taerakul.1@osu.edu
3. Geotechnical Engineer, Black and Veatch Corporation, Kansas City, MO 64114. E-mail: tuw@bv.com
4. Engineer, American Electric Power, Columbus, OH 43215. E-mail: bzand@aep.com
5. Research Scientist, Dept. of Civil and Environmental Engineering and Geodetic Science, Ohio State Univ., 470 Hitchcock Hall, 2070 Neil Ave., Columbus, OH 43210. E-mail: butalia.1@osu.edu