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Civil Engineering :: Soil Mechanics and Foundation Engineering

  1.  

    For a clay slope of height of 10 m, the stability number is 0.05, Î³ = 2.0 t/m3, C = 2.5 t/m2, the critical height of the slope of the soil, is

  2. A.

    4.0 m

    B.

    12.5 m

    C.

    25.0 m

    D.

    15.0 m

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  3. If σ0' and σ' represent initial and increased pressure ; e0 and e void ratios corresponding to initial and increased pressure ; and C0 the compression index (dimensionless), then, the virgin compression curve as expressed by Terzaghi empirical formula is

  4. A.

    e = e0 + Cc log10 σ'/σ0'

    B.

    e = e0 - Cc log10 σ'/σ0'

    C.

    e0 = e - Cc log10 σ'/σ0'

    D.

    e0 = e + Cc log10 σ0'/σ'

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  5. The equation Ï„ = C + σ tan φ is given by

  6. A.

    Rankine

    B.
    Coulomb
    C.

    Culaman

    D.
    Mohr.

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  7. You are given a sample of soil containing coarse grains to determine its water content, you will use

  8. A.

    pycnometer

    B.

    oven-drying method

    C.

    calcium carbide method

    D.

    alcohol method.

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  9. Pick up the incorrect statement from the following:

  10. A.

    Compaction has no effect on the structure of a soil

    B.

    Permeability decreases with increase in the dry density of a compacted soil

    C.

    A wet side compacted soil is more compressible than a dry side compacted soil

    D.

    Dry side compaction soils swell more when given access to moisture

    E.

    None of the these.

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  11. The maximum load carried by a pile, when it continues to sink without further increase of load, is known as

  12. A.

    ultimate load carrying capacity

    B.

    ultimate bearing capacity

    C.

    ultimate bearing resistant

    D.

    all the above.

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  13. The soil which contains finest grain particles, is

  14. A.
    coarse sand
    B.
    fine sand
    C.

    silt

    D.

    clay.

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  15. The general relationship between specific gravity (G), weight of water (γω), degree of saturation (Sr), void ratio (e) and bulk density (γ), is

  16. A.

    y = \(\frac { (S- eS)Yw } { 1+e }\)

    B.

    Y = \(\frac { (G+eS)Yw } { 1+e }\)

    C.

    Y = \(\frac { (1+e)Yw } { G+Sr } \)

    D.

    Y = \(\frac { (1+Sr)e } { G+Sr } \)

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  17. If C is cohesion, F is factor of safety, γ is unit weight of soil and H is the maximum height of embankment, the stability number, is

  18. A.

    \(\frac {F } { CYH } \)

    B.

    \(\frac { C} { FYH } \)

    C.

    \( \frac { H } { CFY }\)

    D.

    \( \frac { Y } { CFH }\)

    E.

    \(\frac { CF } { YH }\)

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  19. The angle between the directions of the failure and the major principal plane, is equal to

  20. A.

    90° + effective angle of shearing resistance

    B.

    90° + half of the angle of shearing resistance

    C.

    45° - half of the angle of shearing resistance

    D.

    45° + half of the angle of shearing resistance.

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