GATE CE 2025 Set 2 — Question 30
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Structural Engineering → RC Fundamentals & Beams → Design for Shear & Torsion
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Question
The design shear strength of a reinforced concrete rectangular beam with a width of and an effective depth of , is . The torsional moment capacity of the section (in ) under pure torsion, as per IS 456:2000, is ______ (round off to one decimal place).
Correct answer
5.7 to 6
Solution
According to IS 456:2000, the equivalent shear force for a section subjected to shear force and torsional moment is given by:For pure torsion, . The torsional capacity is reached when the equivalent shear force equals the shear capacity of the concrete section :Substituting :Given:
Rounding off to one decimal place, we get .
Rounding off to one decimal place, we get .
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