FAQs - US Design Tool
- What does the error "Given lat/lon pair (lat/lon) failed to return data." mean?
- Why have the parameter values from the 2008 USGS National Seismic Hazard Maps changed from those provided in the 2002 Maps?
- How has the 2008 hazard data update affected my results?
- How do I know which building code governs for a particular structure type and location?
- With which building codes and reference documents are the provided spectral acceleration values compatible?
- Should I be using the U.S. Seismic Design Maps Web Application or the Java Ground Motion Parameter Calculator?
- How can I determine the Site Soil Condition for the location in question?
- How should Batch Mode data be formatted?
- Why isn't there a "Site Class F" option for Site Soil Condition?
- What is the significance of the 0.2 second and 1.0 second periods referenced by DesignMaps?
- When I use Internet Explorer to access DesignMaps, why can't I see the Google Maps on the application input page and in the "Summary Report"?
- Where can I find the 2009 NEHRP Recommended Seismic Provisions and the 2010 ASCE-7 Standard?
- Where can I find more information about the calculation of spectral response acceleration parameters needed for seismic design?
- What is the significance of the Site Coefficients Fa and Fv?
- What is the significance of the Risk Coefficient? Do I need to use it?
- How are the output values interpolated?
- Why won't the lines in Tables 11.4-1 and 11.4-2 print? I can see them on my screen, but they aren't visible on the hard copy.
