Estimation of phi’

[ONENGINEER]

SPT and CPT data can be correlated to phi value. E.g. for qc between 40 - 120, the phi is estimated between 35 to 40 deg.

I am looking for a correlation to estimate phi' value from other soil parameters or CPT/SPT, if someone can guide me. Thank you.

 

[PEinc]

Many soils and foundations books have tables relating phi to other soil properties. You should be able to find what you want without much effort.

http://www.PeirceEngineering.com

 

[ONENGINEER]

Thanks, done.