Skip to main content
U.S. flag

An official website of the United States government

This site is currently in beta, and your feedback is helping shape its ongoing development.

Maximum Considered Earthquake Geometric Mean Peak Ground Accelerations for the 2015 NEHRP Recommended Seismic Provisions, 2016 ASCE/SEI 7 Standard, and 2018 International Building Code

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: January 27, 2026 | Last Modified: 2020-09-14T00:00:00Z
The Maximum Considered Earthquake Geometric Mean (MCEG) peak ground acceleration (PGA) values of the 2015 NEHRP Recommended Seismic Provisions, the 2016 ASCE/SEI 7 Standard, and the 2018 International Building Code can be calculated from the downloadable data via the following equations: PGA = min[ PGA_UH, max( PGA_D84th , 0.5 ) ] where PGA_UH = uniform-hazard peak ground accelerations PGA_D84th = 84th-percentile peak ground accelerations The data cover six distinct geographic regions: 1) the conterminous United States, 2) Alaska, 3) Hawaii, 4) Puerto Rico and the U.S. Virgin Islands, 5) Guam and Northern Mariana Islands, and 6) American Samoa. DETAILED METADATA, ABOUT THE DATA FOR EACH GEOGRAPHIC AREA, CAN BE FOUND IN THE ZIP ARCHIVE TITLED: AllMetadataMCEG.zip

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov