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Civil Engineering :: Concrete Technology and Design of Concrete Structures

  1. Poisson’s ratio for concrete

  2. A.

     remains constant

    B.

     increases with richer mixes

    C.

     decreases with richer mixes

    D.

     none of the above

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

  4. A.

     10 mm

    B.

     15 mm

    C.

     25 mm

    D.

     13 mm

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

  6. A.

     15 mm

    B.

     25 mm

    C.

     30 mm

    D.

     40 mm

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  7. Minimum thickness of load bearing RCC wall should be

  8. A.

     50 mm

    B.

     100 mm

    C.

     150 mm

    D.

     200 mm

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

  10. A.

     18

    B.

     30

    C.

     40

    D.

     58

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

  12. A.

     about 0.1 N/mm²

    B.

     zero

    C.

     0.3 N/mm² to 0.7 N/mm²

    D.

     about 1.0 N/mm²

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  13. Shrinkage of concrete depends upon
    i) humidity of atmosphere
    ii) passage of time
    iii) stress
    The correct answer is

  14. A.

     (i) and (ii)

    B.

     (ii) and (iii)

    C.

     only (iii)

    D.

     All (i), (ii) and (iii)

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  15. In counterfort type retaining walls
    i) the vertical slab is designed as a continuous slab
    ii) the heel slab is designed as a continuous slab
    iii) the vertical slab is designed as a cantilever
    iv) the heel slab is designed as a cantilever
    The correct answer is

  16. A.

     (i) and (ii)

    B.

     (i) and (iv)

    C.

     (ii) and (iii)

    D.

     (iii) and (iv)

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  17. Sinking of an intermediate support of a continuous beam
    i) reduces the negative moment at support
    ii) increases the negative moment at support
    iii) reduces the positive moment at center of span
    iv) increases the positive moment at center of span
    The correct answer is

  18. A.

     (i) and (iii)

    B.

     (i) and (iv)

    C.

     (ii) and (iii)

    D.

     (ii) and (iv)

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  19. In a ring beam subjected to uniformly distributed load
    i) shear force at mid span is zero
    ii) shear force at mid span is maximum
    iii) torsion at mid span is zero
    iv) torsion at mid span is maximum
    The correct answer is

  20. A.

     (i) and (iii)

    B.

     (i) and (iv)

    C.

     (ii) and (iii)

    D.

     (ii) and (iv)

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