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  • Question
  • 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

  • Correct Answer
  • 0.7 


  • Structural Design Specifications problems


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    • 1. The angle of inclination of the lacing bars with axis of the member is kept between

    • Options
    • A. 20° and 50°
    • B. 30° and 60°
    • C. 40° and 70°
    • D. 50° and 80°
    • Discuss
    • 2. For spans upto 10 m, the safe span to depth ratio for

    • Options
    • A. cantilever is 7
    • B. simply supported beams is 20
    • C. continuous beams is 26
    • D. all the above.
    • Discuss
    • 3. For all practical purposes, the modulus of elasticity of steel is assumed

    • Options
    • A. 200 kN/mm2
    • B. 225 kN/mm2
    • C. 250 kN/mm2
    • D. 275 kN/mm2
    • Discuss
    • 4. If the main reinforcement of the slab is parallel to a T-beam, the transverse reinforcement at mid span of the slab is provided at least ......of main reinforcement

    • Options
    • A. 40%
    • B. 50%
    • C. 60%
    • D. 70%.
    • Discuss
    • 5. To achieve uniform colour and consistency of the concrete by using ordinary Portland cement, the mixing time may be

    • Options
    • A. to 1 minute
    • B. 1 to minutes
    • C. to 2 minutes
    • D. 2 to minutes
    • E. none of these.
    • Discuss
    • 6. 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
    • 7. 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
    • 8. 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
    • 9. 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
    • 10. 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
    • Discuss


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