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As per IS 1343, at the time of initial tensioning, the maximum tensile stress immediately behind the anchorages shall be limited to p percent of the ultimate tensile strength of the wire, wherein p is

As per IS 1343, at the time of initial tensioning, the maximum tensile stress immediately behind the anchorages shall be limited to p percent of the ultimate tensile strength of the wire, wherein p is Correct Answer 76

Explanation:

  • As per CI. 18.5.1 of IS 1343 at the time of initial tensing, the maximum tensile stress immediately behind the anchorages shall not exceed 80% of the ultimate tensile strength of wire or bar or strand.

As per the given option, we should take 76% (for safer side)

Important Points

  •  Grade of concrete:
    • M40 for pre-tensioned members
    • M30 for post-tensioned members

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