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Civil Engineering :: Concrete Technology and Design of Concrete Structures

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

  2. A.

     (i) and (ii)

    B.

     (ii) and (iii)

    C.

     only (iii)

    D.

     All (i), (ii) and (iii)


  3. 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

  4. A.

     (i) and (ii)

    B.

     (i) and (iv)

    C.

     (ii) and (iii)

    D.

     (iii) and (iv)


  5. 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

  6. A.

     (i) and (iii)

    B.

     (i) and (iv)

    C.

     (ii) and (iii)

    D.

     (ii) and (iv)


  7. 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

  8. A.

     (i) and (iii)

    B.

     (i) and (iv)

    C.

     (ii) and (iii)

    D.

     (ii) and (iv)


  9. The depth of footing for an isolated column is governed by
    i) maximum bending moment
    ii) shear force
    iii) punching shear
    The correct answer is

  10. A.

     only (i)

    B.

     (i) and (ii)

    C.

     (i) and (iii)

    D.

     (i), (ii) and (iii)


  11. In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided on
    i) bottom face near counterfort
    ii) top face near counterfort
    iii) bottom face near centre of span
    iv) top face near centre of span
    The correct answer is

  12. A.

     only (i)

    B.

     only (ii)

    C.

     both (i) and (iv)

    D.

     both (ii) and (iii)


  13. The main reinforcement in the toe of a T- shaped R C. retaining wall is provided on
    i) top face parallel to the wall
    ii) top face perpendicular to the wall
    iii) bottom face paralleUo the wall
    iv) bottom face perpendicular to the wall
    The correct answer is

  14. A.

     only (ii) is correct

    B.

     (i) and (ii) are correct

    C.

     (iii) and (iv) are correct

    D.

     only (iv) is correct


  15. Select the correct statement

  16. A.

     Elastic modulus of high tensile steel is nearly the same as that of mild steel

    B.

     Elastic modulus of high tensile steel is more than that of mild steel

    C.

     Carbon percentage in high carbon steel is less than that in mild steel

    D.

     High tensile steel is cheaper than mild steel


  17. Select the incorrect statement

  18. A.

     Lean mixes bleed more as compared to rich ones.

    B.

     Bleeding can be minimized by adding pozzuolana finer aggregate.

    C.

     Bleeding can be increased by addition of calcium chloride.

    D.

     none of the above


  19. Select the incorrect statement

  20. A.

     The loss of prestress is more in pre-tensioning system than in post-tensioning system.

    B.

     Pretensioning system has greater certainty about its durability.

    C.

     For heavy loads and large spans in buildings or bridges, post-tensioning system is cheaper than pretensioning system

    D.

     none of the above