For a beam, the critical section for shear as per IS 456 is located:
Choose the correct answer
At the centre of span
At the face of support
At distance d (effective depth) from the face of support
At L/4 from support
Correct Answer
C. At distance d (effective depth) from the face of support
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IS 456 Cl. 22.6.2: Critical section for shear is at a distance d (effective depth) from the face of support. This is because inclined compression struts carry shear near supports, so failure does not occur right at the face. Within d from support, the strut-and-tie mechanism is active.
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