1. Aztec Engineering Inc., 625 Fair Oaks Ave., Suite 101, South Pasadena, CA 91030.
2. Professor, Dept. of Civil Engineering, The Univ. of Toledo, 2801 W. Bancroft St., Toledo, OH 43606-3390.
3. Design Branch S-4, California Dept. of Transportation, 2800 Gateway Oaks Dr., Sacramento, CA 95833.