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Seismic site class

Which site class is the basis for all formulas and map values?
A, B, C, D, E, or F




Answer is B the soil profile name is rock, but not hard rock, which is site class A.
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 Resource tip: For further Site Class Definitions, see IBC 2006 Table 1613.5.2. An explanation and copy of table can be found here.

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