1. Ph.D. Student, Centre for Offshore Foundation Systems, Univ. of Western Australia, 35 Stirling Highway, Crawley 6009, Australia.
2. Senior Lecturer, School of Civil Engineering, Univ. of Sydney, Sydney NSW 2006, Australia; formerly, University of Western Australia.
3. Professor, Centre for Offshore Foundation Systems, Univ. of Western Australia, 35 Stirling Highway, Crawley 6009, Australia.