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Civil Engineering :: Soil Mechanics and Foundation Engineering

  1. If drainage is permitted throughout the test, during the application of both normal, and shear stresses so that full consolidation occurs and no excess pore pressure is set up at any stage of the test, is known as

  2. A.

    quick test

    B.
    drained test
    C.

    consolidated undrained test

    D.

    none of these.

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  3. A soil sample of mass specific gravity 1.92, has a moisture content 30%. If the specific gravity of solids is 2.75, the degree of saturation, is

  4. A.
    95.4%
    B.

    95.5%

    C.
    95.6%
    D.

    95.7%

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  5. For slopes of limited extent the surface of slippage, is usually along

  6. A.

    a parabolic arc

    B.
    an elliptical arc
    C.

    a straight line

    D.

    a circular arc.

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  7. For a base failure of a slope, depth factor

  8. A.

    Df = 1

    B.

    Df < 1

    C.

    Df > 1

    D.
    none of these.

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  9. A critical hydraulic gradient may occur when

  10. A.

    flow is in upward direction

    B.

    seepage pressure is in upward direction

    C.

    effective pressure is zero

    D.

    all the above.

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  11. Plasticity index is defined as the range of water content between

  12. A.

    liquid and plastic limit

    B.
    plastic limit and semi solid limit
    C.

    semi-solid limit and liquid limit

    D.

    liquid limit and solid limit.

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  13. The minimum depth of building foundations on

  14. A.

    sandy soils is 80 cm to 100 cm

    B.
    clay soils is 90 cm to 160 cm
    C.

    rocky soils is 5 cm to 50 cm

    D.

    all the above.

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  15. The ratio of the undrained strength in the undrained state to the undrained strength, at the same water content, in the remoulded state, is called the sensivity of the clay. Its value for quick clays is

  16. A.

    4

    B.

    8

    C.

    12

    D.

    16

    E.

    20

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  17. The total weight of a pycnometer with water and oven dried soil 20 (g) is 1600 g. The pycnometer filled with water alone weighs 1500 g. The specific gravity of the soil, is

  18. A.

    1.0

    B.
    1.5
    C.
    2.0
    D.

    2.5

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  19. The consolidation time for soils

  20. A.

    increases with increasing compressibility

    B.

    decreases with increasing permeability

    C.

    increases rapidly with increasing size of soil mass

    D.

    is independent of the magnitude of the stress change.

    E.

    All the above.

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