1. Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of Waterloo Waterloo, ON, Canada N2L 3G1 (corresponding author). E-mail: bhellinga@uwaterloo.ca
2. Ph.D. Candidate, Dept. of Civil and Environmental Engineering, Univ. of Waterloo, Waterloo, ON, Canada N2L 3G1. E-mail: zrabdy@uwaterloo.ca