1. Professor, Dept. of Civil and Environmental Engineering, Tufts Univ., Medford, MA 02155 (corresponding author).
2. Structural Designer, China Sinogy Electric Engineering Co. Ltd., No.1715 North Zhongshan Rd., Shanghai 200061, China; formerly, Graduate Student, Dept. of Civil and Environmental Engineering, Tufts Univ., Medford, MA 02155.
3. Graduate Student, Dept. of Civil and Environmental Engineering, Tufts Univ., Medford, MA 02155.
4. Supervisory Consultant, Acentech Inc., 33 Moulton St., Cambridge, MA 02138.
5. Director, Noise & Vibration Group, Acentech Inc., 33 Moulton St., Cambridge, MA 02138.
6. Professor of Practice, Dept. of Civil and Environmental Engineering, Tufts Univ., Medford, MA 02155.