# Civil Engineering - Soil Mechanics and Foundation Engineering

### Exercise :: Soil Mechanics and Foundation Engineering - Section 1

16.

Pick up the clay soil group which does not swell when wet from the following :

 A. Kaolinite group B. Illite group C. Vermiculite group D. Montrorillonite group.

Explanation:

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17.

Factor of safety against sliding of a slope, is the ratio of

 A. actual cohesion to that required to maintain stability of slope B. shear strength to shear stress along the surface C. neither (a) nor (b) D. both (a) and (b).

Explanation:

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18.

The ratio of the volume of voids to the volume of soil solids in a given soil mass, is known

 A. porosity B. specific gravity C. void ratio D. water content.

Explanation:

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19.

A compacted soil sample using 10% moisture content has a weight of 200 g and mass unit weight of 2.0 g/cm3. If the specific gravity of soil particles and water are 2.7 and 1.0, the degree of saturation of the soil is

 A. 11.1% B. 55.6% C. 69.6% D. none of these.

Explanation:

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20.

A partially saturated sample of soil has a unit weight of 2.0 g/cm3 and specific gravity of soil particles is 2.6. If the moisture content in the soil is 20%, the degree of saturation is

 A. 20% B. 77% C. 92% D. none of these.