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5130/23, 11:46 AM U.S.Seismic Design Maps <br /> Type Value Description <br /> CRS 0.9 Mapped value of the risk coefficient at short periods <br /> CR1 0.898 Mapped value of the risk coefficient at a period of 1 s <br /> Cv 1.378 Vertical coefficient <br /> https:lfwww.soismiemaps.org e' J <br />