U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000


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Bridges & Structures

Seismic Design of Bridges

Slide 37

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Design response spectra for site classes A, B, C, D, and E when Ss = 1.00 g ( 2 percent probability of exceedance in 50 years) based on the NCHRP 12-49 shape definition and modified by the NCHRP 12-49 site factors. Curves include site coefficients Fa and Fv. These graphs are part of the SCDOT Seismic Design Specifications.

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Updated: 06/13/2013
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000