Multiple choice

The effective stress friction angle of a saturated, cohesion soil is 380. The ratio of shear stress to normal effective stress on the failure plane is

  1. 0.781

  2. 0.616

  3. 0.488

  4. 0.438
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A Correct answer
Explanation

On the failure plane, the ratio of shear stress to normal stress is tan(phi). Given phi = 38 degrees, tan(38) = 0.781.

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