# Civil Engineering - Soil Mechanics and Foundation Engineering

### Exercise :: Soil Mechanics and Foundation Engineering - Section 3

1.

The vane shear test is used for the in-situ determination of the undrained strength of the intact fully saturated

 A. sands B. clays C. gravels D. highly organic soils.

Explanation:

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2.

Fundamental relationship between dry density (γd), bulk density (γ) and water content (ω), is :

 A. γ = B. γd = C. ω = D. ω = Explanation:

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3.

The specific gravity of quartz, is

 A. 2.65 B. 2.72 C. 2.85 D. 2.9

Explanation:

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4.

If the cohesive force, (c), is 1.5 t/m2, the density ) of the soil is 2.0 t/m3, factor of safety (F) is 1.5 and stability factor (Sn) is 0.05, the safe height of the §lope, is

 A. 5 metres B. 8 metres C. 10 metres D. 12 metres

Explanation:

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5.

Pick up the correct statement from the following:

 A. The phenomenon of quicksand generally occurs in the cohesionless soil B. At critical hydraulic gradient, the saturated sand becomes quick C. The critical gradient depends on the void ratio and the specific gravity D. The quick sand occurs more in fine sand and silt than coarse material E. All the above.