تماشای ویدئو Bad retrofits a rule not an exception از آی-ویدئو

See for yourself that the building department will approve earthquake retrofits that will never work and why you should do your own building inspections. Business owner and engineer, Howard Cook, of the well-known San Francisco Bay Are business, Bay Area Retrofit discusses common, ineffective seismic retrofit strategies to avoid. Includes specifics with drawings and specifications by earthquake engineers. Why these strategies do not resist earthquakes.
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