Seismic Site Class
Seismic Site Class
(OP)
Hello All,
I am using shear wave velocity profiles for seismic site classification per IBC. However, I am not sure that if we drill a 30 m borhole and use the Nch or Su method it will give the same result as shear wave velocity measurement. Any experience or comment is appreciated.
Regards
I am using shear wave velocity profiles for seismic site classification per IBC. However, I am not sure that if we drill a 30 m borhole and use the Nch or Su method it will give the same result as shear wave velocity measurement. Any experience or comment is appreciated.
Regards





RE: Seismic Site Class
don't forget that there's a few other things that might kick the site class to E or worse.
RE: Seismic Site Class
RE: Seismic Site Class
RE: Seismic Site Class
Under this condition do we need to drill another borhole to 20 m to verify the soil condition at 20 m? or we can rely on the obtained average shear wave velocity? What happens if the unsampled soft layer has properties of the soils stated in class E?
RE: Seismic Site Class
what method are you using to evaluate the shear wave velocity? you might double check and fine tune your analysis as best you can to make sure the 3m layer isn't more or less thick. this may help you sleep better at night once you make a final decision.
read the entire chapter(s) in asce7 to make sure you haven't overlooked anything and rely on the information you have in front of you. good luck.
RE: Seismic Site Class