Will the siltstone layer at this depth fail or not by shear ?
(Hint: Draw the Mohr circle for the new stress state and check it with the failure envelope)

Question

Will the siltstone layer at this depth  fail or not   by shear ?  
 (Hint: Draw the Mohr circle for the new stress state and check it with the failure envelope)

Accepted Answer

Do not fail: The Mohr circle at this state lies below the failure envelope

Answer

Fail: Failure envelope touches the Mohr circle

Answer

Fail: The Mohr circle at this state intersects the failure envelope

Answer

Do not fail: The Mohr circle at this state intersects the failure envelope

Crowdly

Will the siltstone layer at this depth fail or not by shear ? (Hint: Draw ...

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