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  • Question
  • The development length of each bar of three bars bundled together is increased by


  • Options
  • A. 10%
  • B. 20%
  • C. 33%
  • D. 50%

  • Correct Answer
  • 33% 


  • Structural Design Specifications problems


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    • 1. The width of lacing bars in mm is kept

    • Options
    • A. equal to nominal rivet diameter
    • B. twice the nominal rivet diameter
    • C. thrice the nominal rivet diameter
    • D. maximum of the above rounded to nearest 5 mm.
    • Discuss
    • 2. The total area of side face reinforcement, in case of a deep beam should not be less than

    • Options
    • A. 0.1% of web area
    • B. 0.2% of web area
    • C. 0.3% of web area
    • D. 0.4% of web area.
    • Discuss
    • 3. The effective length of lacing is the distance

    • Options
    • A. between the inner end rivets of the bar for single lacing
    • B. 0.7 of the distance between the inner end rivets of the bar for double lacing
    • C. between the inner ends of effective lengths of welds connecting the members
    • D. 0.7 of the distance stated in (c)
    • E. all the above.
    • Discuss
    • 4. The structure which is subjected to an imposed load after 72 hours for a period of 24 hours, is deemed to be unacceptable if it fails to recover the net deflection less than

    • Options
    • A. 90%
    • B. 85%
    • C. 80%
    • D. 75%
    • Discuss
    • 5. The minimum thickness of the web plate for a crane gantry plate girder with a lifting load exceeding 15 tonnes, is

    • Options
    • A. 4 mm
    • B. 5 mm
    • C. 6 mm
    • D. 8 mm
    • Discuss
    • 6. The ratio of the lacing bars for compression members shall not exceed

    • Options
    • A. 80
    • B. 120
    • C. 145
    • D. 200
    • Discuss
    • 7. 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
    • 8. 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
    • 9. 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
    • 10. 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
    • Discuss


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