1. Research Associate, Systems Design Engineering, Univ. of Waterloo, Waterloo, ON, Canada N2L 3G1.
2. Professor, Civil Engineering, Univ. of Waterloo, Waterloo, ON, Canada N2L 3G1 (corresponding author).
3. Professor, Systems Design Engineering, Univ. of Waterloo, Waterloo, ON, Canada N2L 3G1.