Coefficient of Friction b/w Concrete and Soil
Coefficient of Friction b/w Concrete and Soil
(OP)
Hello all,
I'm trying to prove that a foundation design is adequate for sliding for a soil having an effective friction (phi') of 37 degrees. Is the coefficient of friction (mhu) between the concrete and the soil equal to the tangent of the effictive friction (37 degrees)? I want to double check to be sure that this basic soils formula applies between the soil and the concrete and not just soil to soil. Any thoughts would be greatly appreciated.
I'm trying to prove that a foundation design is adequate for sliding for a soil having an effective friction (phi') of 37 degrees. Is the coefficient of friction (mhu) between the concrete and the soil equal to the tangent of the effictive friction (37 degrees)? I want to double check to be sure that this basic soils formula applies between the soil and the concrete and not just soil to soil. Any thoughts would be greatly appreciated.





RE: Coefficient of Friction b/w Concrete and Soil
RE: Coefficient of Friction b/w Concrete and Soil
f-d
¡papá gordo ain’t no madre flaca!
RE: Coefficient of Friction b/w Concrete and Soil
RE: Coefficient of Friction b/w Concrete and Soil
H/(V-U)*Tan(phi)>= 1.5 (S.F.)
V = total weight above shear plane
U = uplift against sheat plane
phi = soil internal friction angle
For clay, the apparent cohesion factor "C" was used.
RE: Coefficient of Friction b/w Concrete and Soil
You can check EM1110-2-2100 and EM1110-2-2502 I am sure that it would help since I did same kind of work recently. It was related with Retaining Wall Stability.
RE: Coefficient of Friction b/w Concrete and Soil
If you accept that your phi would be only a function of grain properties and mineralogy, not soil relative density. It makes some sense since it's hard not to disturb the soil at the bottom of an excavation...