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Imputing Soil Classes

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Tirza Austin posted 08-02-2022 03:02 PM

****This question was submitted by an ASCE member. I'm posting here so the entire community can benefit from the answer.

I am conducting a new analysis per ACE7-22. While imputing the Soil Classes I noticed two different results.

Using the hazardous interface inputs I tried both site class C and D, I then received different results as expected except for the Seismic Design Category - Both resulted to “D”.

Should I be using D?

Huajie Liu posted 08-02-2022 04:24 PM Best Answer

Please read section 11.6 of ASCE 7-22, which describes how to determine Seismic Design Category based on Risk Category and the value of S_DS and S_D1.In this case it appears that the correct SDC is D for both site classes.