1. Geotechnical Engineer, Geotechnical Engineering Office, Civil Engineering and Development Dept., the Government of Hong Kong SAR, Kowloon, HK, e-mail: carloslam@cedd.gov.hk
2. (Formerly Lecturer in Geotechnical Engineering, School of Mechanical, Aerospace, and Civil Engineering, The Univ. of Manchester, Sackville St., Manchester M13 9PL, GB.)