1. Research Assistant, School of Engineering, Civil and Environmental Engineering Program, Univ. of Vermont, Burlington, VT 05405. E-mail: msmith@uvm.edu
2. Associate Professor, School of Engineering, Civil and Environmental Engineering Program, Univ. of Vermont, Burlington, VT 05405 (corresponding author). E-mail: asadek@cems.uvm.edu
3. Research Assistant, School of Engineering, Civil and Environmental Engineering Program, Univ. of Vermont, Burlington, VT 05405. E-mail: shuang@uvm.edu