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Recent content by greggriffin

  1. greggriffin

    Calculate N (Blows per foot) to get Site Class

    Thank you so much
  2. greggriffin

    Natural Gas Pipe Seismic Exclusions

    When is natural gas piping excluded from Seismic restraint in an occupancy category III building? Am I allowed to use either 12" rule or the pipe size exclusion (2" and smaller)?
  3. greggriffin

    Calculate N (Blows per foot) to get Site Class

    Muscog, I do not know what R&C is. The methods mentioned for obtaining N values are either solid or hollow stem continuous flight augers. I have attached an updated file with my interpretation of the equation you gave me above. With the current method I am using, I do not understand how it...
  4. greggriffin

    Calculate N (Blows per foot) to get Site Class

    MSUCOG, I have tried your Nave method and found drastically different results. I have attached an excel file with all of my given borings. Can you help me out with determining a total N_ave for the...
  5. greggriffin

    Natural Gas Pipe Seismically Exempt?

    Thanks, Ill try there
  6. greggriffin

    Calculate N (Blows per foot) to get Site Class

    Thank you very much. Your Nave equation is exactly what I am looking for. I am aware of the other methods for determining site class, but they were not used in this geo report. There are multiple borings for the building footprint and I will take the total average of the site area. I would...
  7. greggriffin

    Natural Gas Pipe Seismically Exempt?

    I want to follow IBC 2006 regulations. In summary, 'Is a pipe used to transport high hazard material allowed to use either or neither of the 12" rule or small pipe size exemptions?'
  8. greggriffin

    Calculate N (Blows per foot) to get Site Class

    I have a geotechnical report that gives N (blows per foot) values down to 20 ft. One boring went down to bedrock at 23 feet. All borings record N measurements at 1, 3, 5, 7, 10, 15, and 20 ft. In order to obtain site classification, I need an average N value for the top 100 ft. IBC 2006...
  9. greggriffin

    Natural Gas Pipe Seismically Exempt?

    Is a natural gas pipe inside/outside a building allowed to be exempt from seismic bracing if it is less than 2-1/2" in interior diameter and/or mounted less than 12" from top of pipe to supporting structure?
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