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Civil Engineering :: RCC Structures Design

  1. A flat slab is supported

  2. A.

     On beams

    B.

     On columns

    C.

     On beams and columns

    D.

     On columns monolithically built with slab


  3. If Sb, is the average bond stress on a bar of diameter ‘d’ subjected to maximum stress ‘t’, the length of the embedment ‘l’ is given by

  4. A.

     l = dt/Sb

    B.

     l = dt/2Sb

    C.

     l = dt/3Sb

    D.

     l = dt/4Sb


  5. The minimum thickness of the cover at the end of a reinforcing bar should not be less than twice the diameter of the bar subject to a minimum of

  6. A.

     10 mm

    B.

     15 mm

    C.

     20 mm

    D.

     25 mm


  7. Spacing of stirrups in a rectangular beam, is

  8. A.

     Kept constant throughout the length

    B.

     Decreased towards the centre of the beam

    C.

     Increased at the ends

    D.

     Increased at the centre of the beam


  9. A simply supported beam 6 m long and of effective depth 50 cm, carries a uniformly distributed load 2400 kg/m including its self weight. If the lever arm factor is 0.85 and permissible tensile stress of steel is 1400 kg/cm², the area of steel required, is

  10. A.

     14 cm²

    B.

     15 cm²

    C.

     16 cm²

    D.

     17 cm²


  11. Post tensioning system

  12. A.

     Was widely used in earlier days

    B.

     Is not economical and hence not generally used

    C.

     Is economical for large spans and is adopted now a days

    D.

     None of these


  13. An R.C.C. beam not provided with shear reinforcement may develop cracks in its bottom inclined roughly to the horizontal at

  14. A.

     25°

    B.

     35°

    C.

     45°

    D.

     55°


  15. On an absolutely rigid foundation base, the pressure will

  16. A.

     Be more at the edges of the foundation

    B.

     Be uniform

    C.

     Not be uniform

    D.

     Be zero at the centre of the foundation


  17. In a cantilever retaining wall without a heel slab

  18. A.

     Thickness of the stem is kept same throughout

    B.

     Base slab is made 10 cm thicker than the stem

    C.

     Width of the base slab is kept 0.7 time the total height of the wall

    D.

     All the above


  19. For a number of columns constructed in a rcjw, the type of foundation provided, is

  20. A.

     Footing

    B.

     Raft

    C.

     Strap

    D.

     Strip