Correlation between PI and angle of shear resistance of clays
Correlation between PI and angle of shear resistance of clays
(OP)
Im after the approximate relation between plasiticity index and angle of shear resistance of clays. I am aware of the table produced by Padfield and Mair - is their anything else.
Regards,
Rob K.
Regards,
Rob K.





RE: Correlation between PI and angle of shear resistance of clays
Please see FAQ731-376 by VPL for tips on how to make the best use of Eng-Tips Fora.
RE: Correlation between PI and angle of shear resistance of clays
If you look at this chart you will see considerable scatter in the results. Therefore, extream caution should be used with this relationship.
RE: Correlation between PI and angle of shear resistance of clays
Focht3 posed his questions to you with the view, I believe, that you would use these values for design - for preliminary estimates, I would opine that such correlations - with proper engineering judgment - would be okay - but this does not negate the need to have site specific information with "real" strenght parameters developed from the site.