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Civil Engineering :: Soil Mechanics and Foundation Engineering

  1. Soils containing organic matters

  2. A.

    are of spongy nature

    B.

    swell with decrease of moisture

    C.

    shrink with increase of moisture content

    D.

    none of these.

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  3. A soil not fully consolidated under the existing over-burden pressure, is called

  4. A.

    pre-consolidated

    B.

    normally consolidated

    C.

    under-consolidated

    D.
    none of these.

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  5. The angle of internal friction is maximum for

  6. A.

    angular-grained loose sand

    B.

    angular-grained dense sand

    C.

    round-grained dense sand

    D.

    round-grained loose sand

    E.

    clays.

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  7. If G is specific gravity of sand particles, e is porosity, the critically hydraulic gradient

  8. A.

    ic = \(\frac { G +1 } { 1-e} \)

    B.

    ic = \(\frac { G +1 } { 1+e} \)

    C.

    ic  = \(\frac { G -1 } { 1+e} \)

    D.

    ic  = \(\frac { G -1 } { 1-e} \)

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  9. A grillage foundation

  10. A.

    is provided for heavily loaded isolated columns

    B.
    is treated as spread foundation
    C.

    consists of two sets of perpendicularly placed steel beams

    D.
    all the above.

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  11. The plasticity of fine soils may be assessed by means of

  12. A.

    dry strength test

    B.

    toughness test

    C.

    dilatancy test

    D.

    all of these.

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  13. The density of soil can be increased

  14. A.

    by reducing the space occupied by air

    B.

    by elastic compression of soil grains

    C.
    by expelling water from pores
    D.
    All the above.

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  15. The length/diameter ratio of cylindrical specimens used in triaxial test, is generally

  16. A.

    1

    B.

    1.5

    C.

    2

    D.

    2.5

    E.

    3

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  17. Pick up the correct statement from the following:

  18. A.

    The object of classifying soils is to arrange them into groups according to their properties and behaviour

    B.

    A soil classification system is meant to provide an accepted and systematic method of describing the various types of soils eliminating personal factors

    C.

    The first category of soil classification is based on grain size of the soil

    D.

    The second category of soil classification is based on fine as well as coarse grains

    E.

    All the above.

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  19.  

     

    A suspended particle falls through a height H cm in water in t minutes. If the viscosity of water is Î· and specific gravity of the particle is G, the diameter of the particle is (where M is a constant factor)

  20. A.

    103\(\sqrt{H/t}\)

    B.

    104M\(\sqrt{H/t}\)

    C.

    105M\(\sqrt{H/t}\)

    D.

    102M\(\sqrt{H/t}\)

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