1. Structural Engineer, JKF and Associates, New Haven, CT 06513.
2. Director, Structural Engineering, CME Associates, Inc., Woodstock, CT 06281.
3. Professor, Dept. of Civil and Environmental Engineering, Univ. of Connecticut, Box U-2037, 261 Glenbrook Rd., Storrs, CT 06269 (corresponding author). E-mail: John.DeWolf@uconn.edu