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  • Question

  • The grade of reinforced concrete to be used in sea water or structures exposed to sea water should be


  • Options
  • A. M 10
  • B. M 15
  • C. M 20
  • D. M 30

  • Correct Answer
  • M 20 

    • Structural Design Specifications problems

    Search Results

    • 1. The minimum diameter of longitudinal reinforcement of a column should not be less than

    • Options
    • A. 6 mm
    • B. 8 mm
    • C. 10 mm
    • D. 12 mm
    • E. 20 mm
      • Discuss
    • 2. For calculating critical compression stress in bending Cs for sections symmetrical about the x-x axis, from the formula , the value of G is taken

    • Options
    • A. 0.2 E
    • B. 0.3 E
    • C. 0.4 E
    • D. 0.5 E
      • Discuss
    • 3. The thickness 't' of a rectangular column base which is provided for distributing the load uniformly, is calculated from the formula

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 4. The minimum area of cross section of reinforcement in either direction of a slab should not be less than ...... of the slab cross section

    • Options
    • A. 0.75%
    • B. 0.10%
    • C. 0.15%
    • D. 0.20%
      • Discuss
    • 5. If fck is characteristic compressive strength of concrete, the flexural and split tensile strength fcr = afck N/mm2 where the value of a is

    • Options
    • A. 0.4
    • B. 0.5
    • C. 0.6
    • D. 0.7
    • E. 0.8
      • Discuss
    • 6. If fck is the characteristic cube strength of concrete in N/mm2, the modulus of elasticity of structural concrete Ec = afck where the value of a, is

    • Options
    • A. 5900
    • B. 5800
    • C. 5700
    • D. 5600
    • E. 5500
      • Discuss
    • 7. Generally acceptable nominal size of aggregates for reinforced concrete, is

    • Options
    • A. 10 mm
    • B. 15 mm
    • C. 20 mm
    • D. 25 mm
    • E. 40 mm
      • Discuss
    • 8. The minimum horizontal distance between two parallel main reinforcing bars, is

    • Options
    • A. the diameter of the bar if their diameters are same
    • B. the diameter of the longer bar if their diameters are unequal
    • C. 5 mm more than nominal maximum size of the coarse aggragate
    • D. greatest value of the above.
      • Discuss
    • 9. Removal of props under

    • Options
    • A. slabs spanning upto 4.5 m is 7 days
    • B. slabs spanning more than 4.5 m is 14 days
    • C. beams spanning upto 6 m is 14 days
    • D. beams spanning more than 6 m is 21 days
    • E. all the above.
      • Discuss
    • 10. Pick up the correct statement for the web stiffeners.

    • Options
    • A. vertical stiffeners are spaced at a distance not greater than 1.5 d and not less than 0.33 d
    • B. d is the distance between flange angles or the clear distance between flanges
    • C. for horizontal stiffeners, d is the clear distance between the horizontal stiffener and the tension flange
    • D. all the above.
      • Discuss

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