1. Centre for Infrastructure Engineering, School of Computing, Engineering and Mathematics, Western Sydney Univ., Penrith, NSW 2751, Australia.
2. Associate Professor, Centre for Infrastructure Engineering, School of Computing, Engineering and Mathematics, Western Sydney Univ., Penrith, NSW 2751, Australia (corresponding author).
3. Director, Centre for Infrastructure Engineering, School of Computing, Engineering and Mathematics, Western Sydney Univ., Penrith, NSW 2751, Australia.