Multiple choice

For a saturated sand deposit, the void ratio and the specific gravity of solids are 0.70 and 2.67, respectively. The critical (upward) hydraulic gradient for the deposit would be

  1. 0.54

  2. 0.98

  3. 1.02

  4. 1.87
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

 $e = 0.70, g = 2.67\\ \text{Critical hydraulic gradient causes effective stress to zero and}\\ i_c = \frac{G - 1}{1 + e} = \frac{2.67 - 1}{1 + 0.7} = 0.98$

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