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IBC Seismic Site Classification
kmm- You in fact always need to consider all of the top 100 ft, no matter the material (e.g. soil, rock, solid waste, etc.). Basically what you're doing is determining the travel time of the wave throuh the material. That's why you don't use a straight average of Vs but rather the...- gheb
- Post #6
- Forum: Geotechnical engineering general discussion
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IBC Seismic Site Classification
jgailla- I guess that is always the main thing that must be weighed in a lot of cases. Typically sites that have sufficient high Vs material to be site classes "C" and above are typically comprised of a fair percentage of rock, or other dense materials typically not characterized in basic site...- gheb
- Post #4
- Forum: Geotechnical engineering general discussion
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IBC Seismic Site Classification
kmm- First off you need to treat the top 100 ft as an average for site classification (you can't say the top 20 ft are an "f" and the bottom 80 ft are a "C" it doesn't work like that. The reason that IBC asks you to look at the full top 100 ft (30 m) is due to the fact that the local site...- gheb
- Post #2
- Forum: Geotechnical engineering general discussion
