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Civil Engineering :: Soil Mechanics and Foundation

  1. The ultimate consolidation settlement of a structure resting on a soil

  2. A.

     Decreases with the increase in the initial voids ratio

    B.

     Decreases with the decrease in the plastic limit

    C.

     Increases with the increase in the initial voids ratio

    D.

     Increases with the decrease in the porosity of the soil

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  3. The major principal stress in an element of cohesion-less soil within the backfill of a retaining wall is

  4. A.

     Vertical if the soil is in an active state of plastic equilibrium

    B.

     Vertical if the soil is in a passive state of plastic equilibrium

    C.

     Inclined at 45° to the vertical plane

    D.

     None of the above

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  5. The coefficient of active earth pressure for a loose sand having an angle of internal friction of 30° is

  6. A.

     1/3

    B.

     3

    C.

     1

    D.

     1/2

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  7. In hydrometer analysis for a soil mass

  8. A.

     both meniscus correction and dispersing agent correction are additive

    B.

     both meniscus correction and dispersing agent correction are subtractive

    C.

     meniscus correction is additive and dispersing agent correction is subtractive

    D.

     meniscus correction is subtractive and dispersing agent correction is additive

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  9. In the triaxial compression test, the application of additional axial stress (i.e. deviator stress) on the soil specimen produces shear stress on

  10. A.

     horizontal plane only

    B.

     vertical plane only

    C.

     both horizontal and vertical planes

    D.

     all planes except horizontal and vertical planes

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  11. Skempton’s pore pressure coefficient B for saturated soil is

  12. A.

     1

    B.

     zero

    C.

     between 0 and 1

    D.

     greater than 1 [CS 95]

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  13. According to IS classification, the range of silt size particles is

  14. A.

     4.75 mm to 2.00 mm

    B.

     2.00 mm to 0.425 mm

    C.

     0.425 mm to 0.075 mm

    D.

     0.075 mm to 0.002 mm

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  15. If the voids of a soil mass are full of air only, the soil is termed as

  16. A.

     air entrained soil

    B.

     partially saturated soil

    C.

     dry soil

    D.

     dehydrated soil

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  17. Highway Research Board (HRB) classification of soils is based on

  18. A.

     particle size composition

    B.

     plasticity characteristics

    C.

     both particle size composition and plasticity characteristics

    D.

     none of the above

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  19. Coarse grained soils are best compacted by a

  20. A.

     drum roller

    B.

     rubber tyred roller

    C.

     sheep’s foot roller

    D.

     vibratory roller

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