1979.2至今, Hong Kong Institution of Engineers, Member 1978.10至今, Member, Institution of Civil Engineers, Member 1982.10至今, Member, Institution of Structural Engineers, Member 2007.2至今, Editorial Board Member of Journal of Engineering Structures 2007.2至今, Editorial Board Member of Journal of Structural Engineering and Mechanics 2007.2至今, Editor of Journal of Advances in Structural Engineering
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