The Structural Engineers Association of Northern California (SEAONC) is a structural engineering association established in 1930. Its headquarters are in

San Francisco, California San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...

. Initially a club for

structural engineer Structural engineers analyze, design, plan, and research List of structural elements, structural components and structural systems to achieve design goals and ensure the safety and comfort of users or occupants. Their work takes account mainly of ...

s to exchange technical information, it evolved into a professional organization advising on the development of

building code A building code (also building control or building regulations) is a set of rules that specify the standards for construction objects such as buildings and non-building structures. Buildings must conform to the code to obtain planning permis ...

requirements and California legislation related to earthquake hazard reduction such as the Field Act and Alquist Priolo Special Studies Zone Act. SEAONC is the northern California section of the statewide Structural Engineers Association of California (SEAOC). SEAOC's ''Recommended Lateral Force Requirements,'' a.k.a. "Blue Book", first published in 1959, has since influenced the development of

seismic analysis Seismic analysis is a subset of structural analysis and is the calculation of the response of a building (or nonbuilding) structure to earthquakes. It is part of the process of structural design, earthquake engineering or structural assessment ...

and design provisions in building codes nationwide.

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* {{authority control Engineering societies based in the United States Organizations based in San Francisco Organizations established in 1930 1930 establishments in California Architecture in California Science and technology in California Structural engineering

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