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Is there a way to estimate Coefficient Friction without testing?

Is there a way to estimate Coefficient Friction without testing?

Is there a way to estimate Coefficient Friction without testing?

(OP)
Hello,

I am designing a Concrete Retaining Wall, I have the Internal Friction ∅.
Can i get the Coefficient Friction by this formula? µ = tan(∅)

Thanks and Regards

RE: Is there a way to estimate Coefficient Friction without testing?

We normally use 0.67*Tan(Phi) for sliding friction coefficient.

http://www.soilstructure.com/

RE: Is there a way to estimate Coefficient Friction without testing?

That would give a FS of 1.5.

Mike McCann, PE, SE (WA)


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