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As per IS 1343, The minimum clear spacing in case of single wires used in pre-tensioning system shall not be less than:
  • a)
    3 times the diameter of wire or 4/3 times the maximum size of aggregate, whichever is greater 
  • b)
    3 times the diameter of wire or 4/3 times the maximum size of aggregate, whichever is lesser
  • c)
    2 times the diameter of wire or 4/3 times the maximum size of aggregate, whichever is greater 
  • d)
    2 times the diameter of wire or 4/3 times the maximum size of aggregate, whichever is lesser
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
As per IS 1343, The minimum clear spacing in case of single wires used...
As per clause 11.1.7.1 of IS 1343,
In case of single wires used in pre-tensioning system, the minimum clear spacing shall not be lesser than greater of the following:
1) 3 times the diameter of wire, and
2)  times the maximum size of aggregate.
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As per IS 1343, The minimum clear spacing in case of single wires used...
Minimum clear spacing in pre-tensioning system as per IS 1343

As per IS 1343, the minimum clear spacing in case of single wires used in pre-tensioning system shall not be less than:

Option A: 3 times the diameter of wire or 4/3 times the maximum size of aggregate, whichever is greater.

Explanation:

Clear spacing is the minimum distance between two adjacent wires or strands in a pre-tensioned member. It is essential to maintain the minimum clear spacing to ensure proper bonding between the concrete and the pre-stressing steel.

The minimum clear spacing is determined by the diameter of the wire or strand and the maximum size of the aggregate used in the concrete mix. As per IS 1343, the minimum clear spacing in case of single wires used in pre-tensioning system shall not be less than 3 times the diameter of wire or 4/3 times the maximum size of aggregate, whichever is greater.

For example, if the diameter of the wire is 10 mm, and the maximum size of aggregate is 20 mm, then the minimum clear spacing should be 3 times the diameter of wire, which is 30 mm.

It is important to note that the minimum clear spacing is different for different types of pre-tensioning systems such as monostrand, multistrand, and circular prestressing. Therefore, it is essential to refer to the relevant code or standard to determine the minimum clear spacing for a specific pre-tensioning system.

Conclusion:

In conclusion, the minimum clear spacing in case of single wires used in pre-tensioning system shall not be less than 3 times the diameter of wire or 4/3 times the maximum size of aggregate, whichever is greater. This minimum clear spacing is essential to ensure proper bonding between the concrete and the pre-stressing steel, and it varies depending on the type of pre-tensioning system used.
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As per IS 1343, The minimum clear spacing in case of single wires used in pre-tensioning system shall not be less than:a)3 times the diameter of wireor4/3 times the maximum size of aggregate, whichever is greaterb)3 times the diameter of wireor4/3 times the maximum size of aggregate, whichever is lesserc)2 times the diameter of wireor4/3 times the maximum size of aggregate, whichever is greaterd)2 times the diameter of wireor4/3 times the maximum size of aggregate, whichever is lesserCorrect answer is option 'A'. Can you explain this answer?
Question Description
As per IS 1343, The minimum clear spacing in case of single wires used in pre-tensioning system shall not be less than:a)3 times the diameter of wireor4/3 times the maximum size of aggregate, whichever is greaterb)3 times the diameter of wireor4/3 times the maximum size of aggregate, whichever is lesserc)2 times the diameter of wireor4/3 times the maximum size of aggregate, whichever is greaterd)2 times the diameter of wireor4/3 times the maximum size of aggregate, whichever is lesserCorrect answer is option 'A'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about As per IS 1343, The minimum clear spacing in case of single wires used in pre-tensioning system shall not be less than:a)3 times the diameter of wireor4/3 times the maximum size of aggregate, whichever is greaterb)3 times the diameter of wireor4/3 times the maximum size of aggregate, whichever is lesserc)2 times the diameter of wireor4/3 times the maximum size of aggregate, whichever is greaterd)2 times the diameter of wireor4/3 times the maximum size of aggregate, whichever is lesserCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for As per IS 1343, The minimum clear spacing in case of single wires used in pre-tensioning system shall not be less than:a)3 times the diameter of wireor4/3 times the maximum size of aggregate, whichever is greaterb)3 times the diameter of wireor4/3 times the maximum size of aggregate, whichever is lesserc)2 times the diameter of wireor4/3 times the maximum size of aggregate, whichever is greaterd)2 times the diameter of wireor4/3 times the maximum size of aggregate, whichever is lesserCorrect answer is option 'A'. Can you explain this answer?.
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