ARS Online V3.0.2

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Using the tool: Specify latitude and longitude in decimal degrees in the input boxes below. Alternatively, Google Maps can be used to find the site location. Specify the time-averaged shear-wave velocity in the upper 30m (Vs30) in the input box. After submitting the data, the USGS 2014 hazard data for a 975-year return period will be reported along with adjustment factors required by Caltrans Seismic Design Criteria (SDC) V2.0.

Latitude: Longitude: Vs30 (m/s):