1. Professor, Dept. of Civil Engineering, National Univ. of Singapore, Singapore 117576.
2. Associate Professor, Dept. of Civil Engineering, National Univ. of Singapore, Singapore 117576.
3. Engineer, Maunsell Consultants (Singapore) Pte Ltd., 300 Beach Road #03-00, Singapore 199555.
4. Technical Director, RPM Engineers Sdn Bhd, 34A Jalan SS 21/39, Damansara Utama 47400, P.J., Malaysia.