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Tesnsile strength at conc/conc and concrete/rock foundation interface

Tesnsile strength at conc/conc and concrete/rock foundation interface

Tesnsile strength at conc/conc and concrete/rock foundation interface

(OP)
What is the typical allowable tensile strength for a concrete dam's concrete/rock foundation interface, and concrete/concrete interface?
 

RE: Tesnsile strength at conc/conc and concrete/rock foundation interface

The tensile strength is zero at the interface.

BA

RE: Tesnsile strength at conc/conc and concrete/rock foundation interface

(OP)
Thanks. Is this for both concrete/concrete and concrete/rock foundation interfaces? I appreciate your help. The Bureau of Reclamation criteria  for concrete dams states that the tensile strength of the concrete is 5-6% of the compressive strength. However, I think this  refers to the stress within the concrete itself, not at the joints/cracks.  I think I am interpreting this criteria correctly, do you agree?  

RE: Tesnsile strength at conc/conc and concrete/rock foundation interface

I agree with your interpretation.   

BA

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