GATE CE 2015 Set 1 — Question 18
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Structural Engineering → RC Fundamentals & Beams → Bond, Development & Anchorage
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Question
The development length of a deformed reinforcement bar can be expressed as . From the IS:456-2000, the value of can be calculated as ________________.
Correct answer
6.38 to 6.42
Solution
According to IS 456:2000, the development length is given by . For deformed bars conforming to IS 1786, the design bond stress values shall be increased by 60%. Thus, the development length for deformed bars is . Comparing this with the given expression , where refers to the base bond stress for plain bars, we find .
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