EZ-FRISK™ allows you to quickly perform probabilistic and deterministic seismic hazard analysis by:

• Entering your site's latitude, longitude, and other site conditions and analysis choices.
• Selecting seismic sources from extensive databases of fault, area, and background seismic sources.
• Choosing attenuation equations from a database of attenuation equations.
• Specifying which attenuation to use with particular seismic sources.
• Overriding, as necessary, calculational parameters such as integration step sizes and near-source effects.

Your seismic hazard analysis module comes with area, fault, and background seismic sources needed to analyze ground motion hazard in one region of the world. You can license additional regions at additional cost. The U.S. seismic sources comes with fault and variable seismicity background sources defined by the USGS and the CGS (Seismic Hazard Mapping Program, 1996 and 2002/2003). These data include results from the Bay Area Workshop 2002. The database covers the continental US, Alaska, and Hawaii. The Canadian seismic sources come with fault and area seismic sources developed by the Geological Survey of Canada for use in creating the 2005 building code.

You can also add additional sources to cover other geographic regions or to perform sensitivity studies using the Fault Seismic Source Database and the Area Seismic Source Database.

The attenuation equation database includes virtually all prominently used attenuation equation forms and includes coefficients for over 120 specific attenuation relationships. You can define your own attenuation equations by providing sets of coefficients for the provided equation forms. Using the attenuation table form, you can implement arbitrary attenuation relationships by providing interpolation data. Learn more...

The seismic hazard analysis batch-processing capability allows you to queue multiple runs for execution. This lets you effectively perform sensitivities and parametric studies or work with multiple site locations without significant manual intervention.

The multi-site gridded analysis module is a separately licensed add-on to the annual seismic hazard analysis license. It performs a hazard analysis on a rectangular grid contained by a polygon. It generates tabular results useful for creating seismic hazard maps.