1. Associate Professor, Dept. of Civil Engineering, Univ. of New Hampshire, Durham, NH 03824 (corresponding author).
2. Structural Engineer, Michie Corporation, 173 Buxton Industrial Dr., Henniker, NH 03242; formerly, Graduate Student, Dept. of Civil Engineering, Univ. of New Hampshire, Durham, NH 03824.
3. Professor, Dept. of Civil and Environmental Engineering, Tufts Univ., Medford, MA 02155.
4. Vice President, Fay, Spofford & Thorndike, Inc., 5 Burlington Woods, Burlington, MA 01803; and Professor of Practice, Dept. of Civil and Environmental Engineering, Tufts Univ., Medford, MA 02155.
5. Structural Engineer, RSE Associates, Inc., 63 Pleasant St., Suite 200, Watertown, MA 02472; formerly, Ph.D. Candidate, Dept. of Civil and Environmental Engineering, Tufts Univ. Medford, MA 02155.
6. Graduate Student, Dept. of Civil Engineering, Univ. of New Hampshire, Durham, NH 03824.