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Description: This 8-page bulletin discusses the progressive collapse concept. The definitions of progressive collapse as introduced in the ASCE7-02, U.S. General Services Administration, and DoD literature are discussed. The response of reinforced concrete buildings to blast load is discussed. The U.S. General Services Administration (GSA) progressive collapse analysis and guidelines are introduced. The results of a PCA study on applying the GSA method of analysis to concrete moment resisting frame buildings located in different seismic zones is presented. The publication also includes a brief introduction to blast load.
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