1. Assistant Professor, Dept. of Civil and Environmental Engineering, Univ. of New Hampshire, Durham, NH 03824 (corresponding author).
2. Structural Engineer, HNTB Corporation, 31 St. James Ave. #300, Boston, MA 02116. E-mail:
3. Chair and Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of New Hampshire, Durham, NH 03824. E-mail:
4. Graduate Student, Dept. of Civil and Environmental Engineering, Univ. of New Hampshire, Durham, NH 03824. E-mail:
5. Graduate Student, Dept. of Civil and Environmental Engineering, Univ. of Delaware, Newark, DE 19716. E-mail: