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Civil Engineering :: RCC Structures Design

  1. Columns may be made of plain concrete if their unsupported lengths do not exceed their least lateral dimension

  2. A.

     Two times

    B.

     Three times

    C.

     Four times

    D.

     Five times

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  3. The number of treads in a flight is equal to

  4. A.

     Risers in the flight

    B.

     Risers plus one

    C.

     Risers minus one

    D.

     None of these

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  5. An R.C.C. column of 30 cm diameter is reinforced with 6 bars 12 mm φ placed symmetrically along the circumference. If it carries a load of 40,000 kg axially, the stress is

  6. A.

     49.9 kg/cm²

    B.

     100 kg/cm²

    C.

     250 kg/cm²

    D.

     175 kg/cm²

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  7. If d and n are the effective depth and depth of the neutral axis respectively of a singly reinforced beam, the lever arm of the beam, is

  8. A.

     d

    B.

     n

    C.

     d + n/3

    D.

     d - n/3

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  9. The allowable tensile stress in mild steel stirrups, reinforced cement concrete, is

  10. A.

     1400 kg/cm²

    B.

     190 kg/cm²

    C.

     260 kg/cm²

    D.

     230 kg/cm²

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  11. In a singly reinforced beam, the effective depth is measured from its compression edge to

  12. A.

     Tensile edge

    B.

     Tensile reinforcement

    C.

     Neutral axis of the beam

    D.

     Longitudinal central axis

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  13. The steel generally used in R.C.C. work, is

  14. A.

     Stainless

    B.

     Mild steel

    C.

     High carbon steel

    D.

     High tension steel

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  15. The advantage of reinforced concrete, is due to

  16. A.

     Monolithic character

    B.

     Fire-resisting and durability

    C.

     Economy because of less maintenance cost

    D.

     All the above

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  17. The spacing of transverse reinforcement of column is decided by the following consideration.

  18. A.

     The least lateral dimension of the column

    B.

     Sixteen times the diameter of the smallest longitudinal reinforcing rods in the column

    C.

     Forty-eight times the diameter of transverse reinforcement

    D.

     All the above

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  19. ‘P’ is the pre-stressed force applied to the tendon of a rectangular pre-stressed beam whose area of cross section is ‘A’ and sectional modulus is ‘Z’. The maximum stress ‘f’ in the beam, subjected to a maximum bending moment ‘M’, is

  20. A.

     f = (P/'+ (Z/M)

    B.

     f = (A/P) + (M/Z)

    C.

     f = (P/A) + (M/Z)

    D.

     f = (P/A) + (M/6Z)

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