Question: In a consolidated-drained triaxial test on clay, the specimen failed at a deviator stress of 124 kN / m2. If the effective stress friction angle

In a consolidated-drained triaxial test on clay, the specimen failed at a deviator stress of 124 kN / m2. If the effective stress friction angle is known to be 31°, what was the effective confining pressure at failure?

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