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  • Question

  • The pH value of water to be used in concrete shall generally be


  • Options
  • A. not more than 7
  • B. not less than 6
  • C. not less than 5
  • D. not more than 6

  • Correct Answer
  • not less than 6 

    • Structural Design Specifications problems

    Search Results

    • 1. Pick up the correct statement from the following:

    • Options
    • A. Flange joints are preferably located at points of maximum stress
    • B. The area of splice plates should be 5% in excess of flange elements spliced
    • C. The C.G. of the flange splice should coincide with that of the element spliced
    • D. For welding flange splice, complete penetration butt welds should be used
    • E. None of these.
      • Discuss
    • 2. For deformed reinforcing bars, the permissible design bond stress may be increased by

    • Options
    • A. 20%
    • B. 30%
    • C. 40%
    • D. 50%
    • E. 60%
      • Discuss
    • 3. The flat slab is a reinforced concrete slab with or without drops and is supported

    • Options
    • A. on columns without column head
    • B. on columns with column head
    • C. on beams
    • D. None of these.
      • Discuss
    • 4. The ratio of the lacing bars for compression members shall not exceed

    • Options
    • A. 80
    • B. 120
    • C. 145
    • D. 200
      • Discuss
    • 5. The development length of each bar of three bars bundled together is increased by

    • Options
    • A. 10%
    • B. 20%
    • C. 33%
    • D. 50%
      • Discuss
    • 6. When bending occurs about both axes of the member, the value of fbe in the formula |> 1 is taken

    • Options
    • A. higher value
    • B. lower value
    • C. sum of the two
    • D. difference of the two.
      • Discuss
    • 7. M 30 grade concrete means, its compressive strength of 15-cm cube, is 30 N/mm2 after

    • Options
    • A. 3 days
    • B. 7 days
    • C. 21 days
    • D. 28 days
      • Discuss
    • 8. The characteristic strength of concrete is the strength of material if its test result is not less than

    • Options
    • A. 2%
    • B. 3%
    • C. 4%
    • D. 5%
    • E. 10%
      • Discuss
    • 9. Creep of concrete is assumed proportional to the stress if the stress does not exceed .......of the characteristic compressive strength

    • Options
    • A. 15%
    • B. 20%
    • C. 25%
    • D. 33%
    • E. 50%
      • Discuss
    • 10. For design purpose, the moment at the support where two unequal spans or spans not equally loaded meet, is

    • Options
    • A. lesser value
    • B. greater value
    • C. average of two values
    • D. none of these.
      • Discuss

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