1. Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of Massachusetts Amherst, 232A Marston Hall, 130 Natural Resources Rd., Amherst, MA 01002 (corresponding author).
2. Senior Staff I-Building Technology, Simpson Gumpertz & Heger, 41 Seyon St., Building 1, Suite 500, Waltham, MA 02453.
3. Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of Massachusetts Amherst, 234 Marston Hall, 130 Natural Resources Rd., Amherst, MA 01002.