Gridded earthquake ground motions for the 2015 NEHRP Recommended Seismic Provisions and 2016 ASCE/SEI 7 Standard

For designing buildings and other structures, the 2015 NEHRP Recommended Seismic Provisions and the 2016 ASCE/SEI 7 Standard contain maps of Risk-Targeted Maximum Considered Earthquake (MCER) spectral response accelerations and maps of Maximum Considered Earthquake Geometric Mean (MCEG) peak ground accelerations. The MCER ground motions are also in the 2017 ASCE/SEI 41 Standard and the 2018 and 2021 editions of the International Building Code. These MCER and MCEG ground motion maps are derived from USGS National Seismic Hazard Models via the gridded values of this data release. The data files in the "Child Items" below also underlie the corresponding USGS Seismic Design Web Services. See the "Related External Resources" below for links to the building code reference documents, the USGS National Seismic Hazard Models used, and the corresponding USGS web services.