California Department of Transportation

Caltrans ARS Online (v2.3.09)

This web-based tool calculates both deterministic and probabilistic acceleration response spectra for any location in California based on criteria provided in Appendix B of Caltrans Seismic Design Criteria. More...


Latitude: Longitude: VS30: m/s
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This application is being updated for digital accessibility and will continue to function while updates are in progress.
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