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Civil Engineering :: Concrete Technology and Design of Concrete Structures

  1. The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing and compacting, is called

  2. A.

     segregation

    B.

     bleeding

    C.

     bulking

    D.

     creep


  3. A T-shaped retaining wall mainly conssits of

  4. A.

     one cantilever

    B.

     two cantilevers

    C.

     three cantilevers

    D.

     four cantilevers


  5. In a counterfort retaining wall, the main reinforcement in the stem at mid span is provided on

  6. A.

     front face only

    B.

     inner face only

    C.

     both front face and inner face

    D.

     none of the above


  7. The average permissible stress in bond for plain bars in tension is

  8. A.

     increased by 10% for bars in compression

    B.

     increased by 25% for bars in compression

    C.

     decreased by 10% for bars in compression

    D.

     decreased by 25% for bars in compression


  9. Poisson’s ratio for concrete

  10. A.

     remains constant

    B.

     increases with richer mixes

    C.

     decreases with richer mixes

    D.

     none of the above


  11. The minimum cover in a slab should neither be less than the diameter of bar nor less than

  12. A.

     10 mm

    B.

     15 mm

    C.

     25 mm

    D.

     13 mm


  13. For a longitudinal reinforcing bar in a column, the minimum cover shall neither be less than the diameter of bar nor less than

  14. A.

     15 mm

    B.

     25 mm

    C.

     30 mm

    D.

     40 mm


  15. Minimum thickness of load bearing RCC wall should be

  16. A.

     50 mm

    B.

     100 mm

    C.

     150 mm

    D.

     200 mm


  17. The recommended value of modular ratio for reinforced brick work is

  18. A.

     18

    B.

     30

    C.

     40

    D.

     58


  19. The permissible diagonal tensile stress in reinforced brick work is

  20. A.

     about 0.1 N/mm²

    B.

     zero

    C.

     0.3 N/mm² to 0.7 N/mm²

    D.

     about 1.0 N/mm²