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Sigma in liquefaction analysis

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geoeng26

geoeng26

Geotechnical
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Jun 15, 2011
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When calculating the CSR for liquefaction settlement, do you use the normal and total stress after excavation (post-construction) or before excavation?
 
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Seems you would use whatever stress condition is there at the time of the earthquake.

At least in theory, (N1)60cs shouldn't change much due to unloading by excavation.
 
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