1. Senior Lecturer, Centre for Offshore Foundation Systems, Univ. of Western Australia, Crawley, Perth, WA 6009, Australia (corresponding author).
2. Professor, Centre for Offshore Foundation Systems, Univ. of Western Australia, Crawley, Perth, WA 6009, Australia.
3. Student, Centre for Offshore Foundation Systems, Univ. of Western Australia, Crawley, Perth, WA 6009.