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Civil Engineering :: Concrete Technology and Design of Concrete Structures

  1. The maximum value of hoop compression in a dome is given by (where, w = load per unit area of surface of dome R = radius of curvature d = thickness of dome)

  2. A.

     wR / 4d

    B.

     wR/2d

    C.

     wR/d

    D.

     2wR/d

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  3. Stress strain curve of high tensile steel

  4. A.

     has a definite yield point

    B.

     does not show definite yield point but yield point is defined by 0.1% proof stress

    C.

     does not show definite yield point but yield point is defined by 0.2% proof stress

    D.

     does not show definite yield point but yield point is defined by 2% proof stress,

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  5. While designing the pile as a column, the end conditions are nearly

  6. A.

     both ends hinged

    B.

     both ends fixed

    C.

     one end fixed and other end hinged

    D.

     one end fixed and other end free

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  7. In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always

  8. A.

     zero

    B.

     tensile

    C.

     compressive

    D.

     tensile or compressive

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  9. For a continuous slab of 3 m x 3.5 m size, the minimum overall depth of slab to satisfy vertical deflection limits is

  10. A.

     50 mm

    B.

     75 mm

    C.

     100 mm

    D.

     120 mm

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  11. The main reinforcement in the heel of a T-shaped R.C. retaining wall is provided on

  12. A.

     top face perpendicular to wall

    B.

     bottom face perpendicular to wall

    C.

     both top and bottom faces perpendicular to wall

    D.

     none of the above

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  13. For walls, columns and vertical faces of all structural members, the form work is generally removed after

  14. A.

     24 to 48 hours

    B.

     3 days

    C.

     7 days

    D.

     14 days

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  15. As compared to ordinary portland cement, high alumina cement has

  16. A.

     higher initial setting time but lower final setting time

    B.

     lower initial setting time but higher final setting time

    C.

     higher initial and final setting times

    D.

     lower initial and final setting times

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  17. The compressive strength of 100 mm cube as compared to 150 mm cube is always

  18. A.

     less

    B.

     more

    C.

     equal

    D.

     none of the above

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  19. Approximate value of shrinkage strain in concrete, is

  20. A.

     0.003

    B.

     0.0003

    C.

     0.00003

    D.

     0.03

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