Seismic Design Data Sets

2012 IBC

These gridded text files contain SS, S1 and PGA parameter values from the 2010 ASCE-7 Standard. Please note that these values will not exactly match those provided by the U.S. Seismic “DesignMaps” Web Application. DesignMaps references a finer grid (0.01 degree) of data than that provided below. In addition, DesignMaps interpolates the underlying probabilistic and deterministic ground motions, as well as the risk coefficient, before calculating SS and S1. Conversely, should you choose to interpolate these gridded values, you will be doing so after the SS and S1 calculations have already been performed at the grid points. Proceeding with this order of operations will produce results that slightly differ from those calculated by DesignMaps. The data below are provided as a reference. For the 0.01 degree gridded data sets underlying DesignMaps, which can be used to recreate DesignMaps results, please consult the 2009 NEHRP Recommended Seismic Provisions data section.

Conterminous US

  • 0.2s, 1.0s, PGA MCE Ground Motion (0.01° gridded data, 24.6°–50° N, 125°–65° W)
    [Download as Zipped Text]
  • 0.2s, 1.0s, PGA (Short Reference Version) (0.05° gridded data, 24.6°–50° N, 125°–65° W)
    [Download as Text]

Alaska

  • 0.2s, 1.0s, PGA MCE Ground Motion (0.05° gridded data, 48°–72° N, 160° E – 125° W)
    [Download as Text]

Hawaii

  • 0.2s, 1.0s, PGA MCE Ground Motion (0.02° gridded data, 18°–23° N, 161°–154° W)
    [Download as Text]

Puerto Rico/U.S. Virgin Islands

  • 0.2s, 1.0s, PGA MCE Ground Motion (0.01° gridded data, 17.5°–19° N, 67.5°–64.5° W)
    [Download as Text]

2012 IRC

Conterminous US

ASCE 7-10

These gridded text files contain SS, S1, PGA, CRS, and CR1 parameter values from the 2010 ASCE-7 Standard. Please note that these values will not exactly match those provided by the U.S. Seismic “DesignMaps” Web Application. DesignMaps references a finer grid (0.01 degree) of data than that provided below. In addition, DesignMaps interpolates the underlying probabilistic and deterministic ground motions, as well as the risk coefficient, before calculating SS and S1. Conversely, should you choose to interpolate these gridded values, you will be doing so after the SS and S1 calculations have already been performed at the grid points. Proceeding with this order of operations will produce results that slightly differ from those calculated by DesignMaps. The data below are provided as a reference. For the 0.01 degree gridded data sets underlying DesignMaps, which can be used to recreate DesignMaps results, please consult the 2009 NEHRP Recommended Seismic Provisions data section.

Conterminous US

  • 0.2s, 1.0s, PGA MCE Ground Motion (0.05° gridded data, 24.6°–50° N, 125°–65° W)
    [Download as Text]
  • 0.2s Risk Coefficients (0.01° gridded data, 24.6°–50° N, 125°–65° W)
    [Download as Text]
  • 1.0s Risk Coefficients (0.01° gridded data, 24.6°–50° N, 125°–65° W)
    [Download as Text]

Alaska

  • 0.2s, 1.0s, PGA MCE Ground Motion (0.05° gridded data, 48°–72° N, 160° E – 125° W)
    [Download as Text]
  • 0.2s Risk Coefficients (0.05° gridded data, 48°–72° N, 160° E – 125° W)
    [Download as Text]
  • 1.0s Risk Coefficients (0.05° gridded data, 48°–72° N, 160° E – 125° W)
    [Download as Text]

Hawaii

  • 0.2s, 1.0s, PGA MCE Ground Motion (0.02° gridded data, 18°–23° N, 161°–154° W)
    [Download as Text]
  • 0.2s Risk Coefficients (0.02° gridded data, 18°–23° N, 161°–154° W)
    [Download as Text]
  • 1.0s Risk Coefficients (0.02° gridded data, 18°–23° N, 161°–154° W)
    [Download as Text]

Puerto Rico/U.S. Virgin Islands

  • 0.2s, 1.0s, PGA MCE Ground Motion (0.01° gridded data, 17.5°–19° N, 67.5°–64.5° W)
    [Download as Text]
  • 0.2s Risk Coefficients (0.01° gridded data, 17.5°–19° N, 67.5°–64.5° W)
    [Download as Text]
  • 1.0s Risk Coefficients (0.01° gridded data, 17.5°–19° N, 67.5°–64.5° W)
    [Download as Text]

2009 NEHRP

These gridded text files contain SSUH, S1UH, SSD, S1D, CRS, and CR1 parameter values from the 2009 NEHRP Recommended Seismic Provisions. To calculate Ss and S1 (as well as SMS, SM1, SDS, and SD1), please follow the procedure outlined in the U.S. Seismic “DesignMaps” Web Application “Detailed Report”. Please note that only seismic design parameter values calculated using the 0.01 degree gridded data sets will match those values provided by the U.S. Seismic DesignMaps Web Application when interpolated for locations off the data grid.

Conterminous US

  • 0.2s Deterministic Ground Motion (0.01° gridded data, 24.6°–50° N, 125°–65° W)
    [Download as Text]
  • 1.0s Deterministic Ground Motion (0.01° gridded data, 24.6°–50° N, 125°–65° W)
    [Download as Text]
  • 0.2s Risk Coefficients (0.01° gridded data, 24.6°–50° N, 125°–65° W)
    [Download as Text]
  • 1.0s Risk Coefficients (0.01° gridded data, 24.6°–50° N, 125°–65° W)
    [Download as Text]
  • 0.2s Uniform Hazard Ground Motion (0.01° gridded data, 24.6°–50° N, 125°–65° W)
    [Download as Text]
  • 1.0s Uniform Hazard Ground Motion (0.01° gridded data, 24.6°–50° N, 125°–65° W)
    [Download as Text]

Alaska

  • 0.2s Deterministic Ground Motion (0.05° gridded data, 48°–72° N, 160° E – 125° W)
    [Download as Text]
  • 1.0s Deterministic Ground Motion (0.05° gridded data, 48°–72° N, 160° E – 125° W)
    [Download as Text]
  • 0.2s Risk Coefficients (0.05° gridded data, 48°–72° N, 160° E – 125° W)
    [Download as Text]
  • 1.0s Risk Coefficients (0.05° gridded data, 48°–72° N, 160° E – 125° W)
    [Download as Text]
  • 0.2s Uniform Hazard Ground Motion (0.05° gridded data, 48°–72° N, 160° E – 125° W)
    [Download as Text]
  • 1.0s Uniform Hazard Ground Motion (0.05° gridded data, 48°–72° N, 160° E – 125° W)
    [Download as Text]

Hawaii

  • 0.2s Deterministic Ground Motion (0.02° gridded data, 18°–23° N, 161°–154° W)
    [Download as Text]
  • 1.0s Deterministic Ground Motion (0.02° gridded data, 18°–23° N, 161°–154° W)
    [Download as Text]
  • 0.2s Risk Coefficients (0.02° gridded data, 18°–23° N, 161°–154° W)
    [Download as Text]
  • 1.0s Risk Coefficients (0.02° gridded data, 18°–23° N, 161°–154° W)
    [Download as Text]
  • 0.2s Uniform Hazard Ground Motion (0.02° gridded data, 18°–23° N, 161°–154° W)
    [Download as Text]
  • 1.0s Uniform Hazard Ground Motion (0.02° gridded data, 18°–23° N, 161°–154° W)
    [Download as Text]

Puerto Rico/U.S. Virgin Islands

  • 0.2s Deterministic Ground Motion (0.01° gridded data, 17.5°–19° N, 67.5°–64.5° W)
    [Download as Text]
  • 1.0s Deterministic Ground Motion (0.01° gridded data, 17.5°–19° N, 67.5°–64.5° W)
    [Download as Text]
  • 0.2s Risk Coefficients (0.01° gridded data, 17.5°–19° N, 67.5°–64.5° W)
    [Download as Text]
  • 1.0s Risk Coefficients (0.01° gridded data, 17.5°–19° N, 67.5°–64.5° W)
    [Download as Text]
  • 0.2s Uniform Hazard Ground Motion (0.01° gridded data, 17.5°–19° N, 67.5°–64.5° W)
    [Download as Text]
  • 1.0s Uniform Hazard Ground Motion (0.01° gridded data, 17.5°–19° N, 67.5°–64.5° W)
    [Download as Text]

ASCE 7-05, 2006/09 IBC

Conterminous US

  • 0.2s, 1.0s MCE Ground Motion (0.05° gridded data, 24.6°–50° N, 125°–65° W)
    [Download as Text | Binary]

Alaska

  • 0.2s, 1.0s MCE Ground Motion (0.1° gridded data, 50°–72° N, 170° E – 130° W)
    [Download as Text | Binary]

California/Nevada

  • 0.2s, 1.0s MCE Ground Motion (0.01° gridded data, 32°–42° N, 125°–115° W)
    [Download as Text | Binary]

Hawaii

  • 0.2s, 1.0s MCE Ground Motion (0.02° gridded data, 18°–23° N, 161°–154° W)
    [Download as Text | Binary]

Intermountain West

  • 0.2s, 1.0s MCE Ground Motion (0.01° gridded data, 40°–45° N, 112°–110° W)
    [Download as Text | Binary]

New Madrid Seismic Zone

  • 0.2s, 1.0s MCE Ground Motion (0.01° gridded data, 35°–38° N, 92°–88° W)
    [Download as Text | Binary]

Coastal Pacific Northwest

  • 0.2s, 1.0s MCE Ground Motion (0.01° gridded data, 41°–49° N, 125°–123° W)
    [Download as Text | Binary]

Puerto Rico/U.S. Virgin Islands

  • 0.2s, 1.0s MCE Ground Motion (0.05° gridded data, 16°–21° N, 70°–62° W)
    [Download as Text | Binary]

2006/09 IRC

Conterminous US

ASCE 7-98/02, 2000/03 IBC

Conterminous US

  • 0.2s, 1.0s MCE Ground Motion (0.1° gridded data, 24.6°–50° N, 125°–65° W)
    [Download as Text | Binary]

California/Nevada

  • 0.2s, 1.0s MCE Ground Motion (0.01° gridded data, 32°–43° N, 125°–111° W)
    [Download as Text | Binary]

2000/03 IRC

Conterminous US

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