10.3 The effective stress parameters for a fully saturated clay are known to be c' 15...

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10.3 The effective stress parameters for a fully saturated clay are known to be c' 15 kN/m2 and p 29°. In an unconsolidated-undrained triaxial test on a specimen of the same clay the all-round pressure was 100 kN/m and the principal stress difference at failure 170 kN/m2. Assuming that the above parameters are appropriate to the failure stress state of the test, what would be the expected value of pore water pressure in the specimen at failure? 10.3 The effective stress parameters for a fully saturated clay are known to be c' 15 kN/m2 and p 29°. In an unconsolidated-undrained triaxial test on a specimen of the same clay the all-round pressure was 100 kN/m and the principal stress difference at failure 170 kN/m2. Assuming that the above parameters are appropriate to the failure stress state of the test, what would be the expected value of pore water pressure in the specimen at failure?