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Bruce F. Maison is a Consulting Engineer practicing in El Cerrito, California. He is an active member of the Existing Buildings Committee of the Structural Engineers Association of Northern California (SEAONC). He is also a member of the ASCE/SEI Committee responsible for the performance-based engineering standard ASCE 41, Seismic Evaluation and Retrofit of Existing Buildings. (maison@netscape.com)