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Civil Engineering :: Concrete Technology and Design of Concrete Structures

  1. According to Whitney’s theory, ultimate strain of concrete is assumed to be

  2. A.

     0.03%

    B.

     0.1%

    C.

     0.3%

    D.

     3%

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  3. The percentage of reinforcement in case of slabs, when high strength deformed bars are used is not less than

  4. A.

     0.15

    B.

     0.12

    C.

     0.30

    D.

     1.00

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  5. When shear stress exceeds the permissible limit in a slab, then it is reduced by

  6. A.

     Increasing the depth

    B.

     Providing shear reinforcement

    C.

     Using high strength steel

    D.

     Using thinner bars but more in number

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  7. For a simply supported beam of span 15m, the minimum effective depth to satisfy the vertical deflection limits should be

  8. A.

     600 mm

    B.

     750 mm

    C.

     900 mm

    D.

     more than 1 m

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  9. In a spherical dome the hoop stress due to a concentrated load at crown is

  10. A.

     compressive everywhere

    B.

     tensile everywhere

    C.

     partly compressive and partly tensile

    D.

     zero

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  11. If the foundations of all the columns of a structure are designed on the total live and dead load basis, then

  12. A.

     there will be no settlement of columns

    B.

     there will be no differential settlement

    C.

     the settlement of exterior columns will be more than interior columns

    D.

     the settlement of interior columns will be more than exterior columns

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  13. If the size of panel in a flat slab is 6m x 6m, then as per Indian Standard Code, the widths of column strip and middle strip are

  14. A.

     3.0 m and 1.5 m

    B.

     1.5 m and 3.0 m

    C.

     3.0 m and 3.0 m

    D.

     1.5 m and 1.5 m

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  15. The effect of creep on modular ratio is

  16. A.

     to decrease it

    B.

     to increase it

    C.

     either to decrease or to increase it

    D.

     to keep it unchanged

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  17. In reinforced concrete footing on soil, the minimum thickness at edge should not be less than

  18. A.

     100 mm

    B.

     150 mm

    C.

     200 mm

    D.

     250 mm

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  19. The minimum cover to the ties or spirals should not be less than

  20. A.

     15 mm

    B.

     20 mm

    C.

     25 mm

    D.

     50mm

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