Use our IBC Seismic Design Categories map to easily obtain the seismic design category and spectral response acceleration parameter (Section 1613 of the IBC 2015) for any location in the contiguous United States, Puerto Rico and Alaska. You can click on the map below to determine the seismic design category (SDC) and response parameter (SDS) for that location. The seismic design category (SDC) is calculated based on the design spectral response acceleration (SDS at Site Class = D, Risk Cat. = II), provided by the USGS Seismic API.

Street: City: State:   Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware District of Columbia Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming Zip:

Medeek Toolbox Key: Activate this computer for later use

* Seismic Design Categories obtained directly from the USGS Seismic API service. Local codes and ammendments may govern, verify with local building department or jurisdiction.

If you need to gather seismic data programmatically, please consider our API Service.
If you have any questions or concerns please call us at 1-425-652-4188.