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Gridded earthquake ground motions for the 2023 AASHTO Design Specifications

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Kortum, Z., Luco, N., and Rezaeian, S., 2022, Gridded earthquake ground motions for the 2023 AASHTO Design Specifications: U.S. Geological Survey data release, https://doi.org/10.5066/P9EACMIX.

Summary

For background, please see the Parent Item. The attached files below for 8 site classes each provide risk-targeted spectral accelerations (in units of g) for a grid of latitudes and longitudes and 22 spectral periods, including 0.0 seconds for peak ground acceleration (denoted SA0P0). To compare these risk-targeted spectral accelerations with uniform-hazard counterparts analogous to those in previous editions of the AASHTO Design Specifications, corresponding risk coefficients are also provided (for all of the site classes in a single ZIP file). The risk coefficients are ratios of the risk-targeted divided by uniform-hazard spectral accelerations, with the latter for a 7% probability of being exceeded in 75 years. The risk-targeted [...]

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Attached Files

Click on title to download individual files attached to this item.

Hawaii-2021_Geomean-RTSAs_vs30=1500-siteClass=A_AASHTO-2023.csv
“Site Class A, Risk-Targeted Spectral Accelerations”
2.19 MB text/csv
Hawaii-2021_Geomean-RTSAs_vs30=1080-siteClass=B_AASHTO-2023.csv
“Site Class B, Risk-Targeted Spectral Accelerations”
2.18 MB text/csv
Hawaii-2021_Geomean-RTSAs_vs30=760-siteClass=BC_AASHTO-2023.csv
“Site Class BC, Risk-Targeted Spectral Accelerations”
2.17 MB text/csv
Hawaii-2021_Geomean-RTSAs_vs30=530-siteClass=C_AASHTO-2023.csv
“Site Class C, Risk-Targeted Spectral Accelerations”
2.16 MB text/csv
Hawaii-2021_Geomean-RTSAs_vs30=365-siteClass=CD_AASHTO-2023.csv
“Site Class CD, Risk-Targeted Spectral Accelerations”
2.15 MB text/csv
Hawaii-2021_Geomean-RTSAs_vs30=260-siteClass=D_AASHTO-2023.csv
“Site Class D, Risk-Targeted Spectral Accelerations”
2.14 MB text/csv
Hawaii-2021_Geomean-RTSAs_vs30=185-siteClass=DE_AASHTO-2023.csv
“Site Class DE, Risk-Targeted Spectral Accelerations”
2.13 MB text/csv
Hawaii-2021_Geomean-RTSAs_vs30=150-siteClass=E_AASHTO-2023.csv
“Site Class E, Risk-Targeted Spectral Accelerations”
2.13 MB text/csv
Hawaii-2021_RiskCoefficients_AASHTO-2023.zip
“All Site Classes, Risk Coefficients”
4.85 MB application/zip

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  • Geologic Hazards Science Center

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