1. Designer—Structures Dept., SAI Consulting Engineering, Inc., 1400 Penn Ave., Ste. 101, Pittsburgh, PA 15222-4332.
2. Associate Professor and William Kepler Whiteford Faculty Fellow, Dept. of Civil and Environmental Engineering, Univ. of Pittsburgh, 949 Benedum Hall, Pittsburgh, PA 15261.
3. Dept. Manager—Structures, SAI Consulting Engineering, Inc., 1400 Penn Ave., Ste. 101, Pittsburgh, PA 15222-4332.