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Civil Engineering :: Soil Mechanics and Foundation

  1. The flownet for an earthen dam with 30 m water depth consists of 25 potential drops and 5 flow channels. The coefficient of permeability of dam material is 0.03 mm/sec. The discharge per meter length of dam is

  2. A.

     0.00018 nrVsec

    B.

     0.0045 m3/sec

    C.

     0.18 m3/sec

    D.

     0.1125 m3/sec

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  3. The average coefficient of permeability of natural deposits

  4. A.

     Parallel to stratification is always greater than that perpendicular to stratification

    B.

     Parallel to stratification is always less than that perpendicular to stratification

    C.

     Is always same in both directions

    D.

     Parallel to stratification may or may not be greater than that perpendicular to stratification

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  5. For proper field control, which of the following methods is best suited for quick determination of water content of a soil mass ?

  6. A.

     oven drying method

    B.

     sand bath method

    C.

     alcohol method

    D.

     calcium carbide method

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  7. Which of the following methods is more suitable for the determination of permeability of clayey soil ?

  8. A.

     constant head method

    B.

     falling head method

    C.

     horizontal permeability test

    D.

     none of the above

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  9. If the water content of a fully saturated soil mass is 100%, then the voids ratio of the sample is

  10. A.

     less than specific gravity of soil

    B.

     equal to specific gravity of soil

    C.

     greater than specific gravity of soil

    D.

     independent of specific gravity of soil

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  11. Dispersed type of soil structure is an arrangement comprising particles having

  12. A.

     face to face or parallel orientation

    B.

     edge to edge orientation

    C.

     edge to face orientation

    D.

     all of the above

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  13. Physical properties of a permeant which influence permeability are

  14. A.

     viscosity only

    B.

     unit weight only

    C.

     both viscosity and unit weight

    D.

     none of the above

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  15. A cylindrical specimen of saturated soil failed under an axial vertical stress of 100kN/m2 when it was laterally unconfmed. The failure plane was inclined to the horizontal plane at an angle of 45°. The values of cohesion and angle of internal friction for the soil are respectively

  16. A.

     0.5 N/mm² and 30°

    B.

     0.05 N/mm² and 0°

    C.

     0.2 N/mm² and 0°

    D.

     0.05 N/mm² and 45°

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  17. If the volume of voids is equal to the volume of solids in a soil mass, then the values of porosity and voids ratio respectively are

  18. A.

     1.0 and 0.0

    B.

     0.0 and 1.0

    C.

     0.5 and 1.0

    D.

     1.0 and 0.5

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  19. Unconfmed compressive strength test is

  20. A.

     undrained test

    B.

     drained test

    C.

     consolidated undrained test

    D.

     consolidated drained test

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