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  1. kjhanscom

    Seismic Site Class Determination

    Mccoy, Section 1615.1.1
  2. kjhanscom

    Seismic Site Class Determination

    Thank you Jalthi. The soil layer in question is about 10 feet below foundation grade. I believe that shear wave testing is appropriate to upgrade the site class, but there are firms in my region that interpret the code as Site Class E regardless of shear wave velocity testing since it exceeds...
  3. kjhanscom

    Seismic Site Class Determination

    I have a site with soils corresponding to Seismic Site Class E according to IBC 2009. I have 10 feet of soil strata with PI>20, w>40, and su<500 psf. I am confident that cross-hole shear wave velocity testing will upgrade the Site Class to D. Is is permissible to upgrade the Site Class...

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