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Question

What is the adoptable maximum spacing between vertical stirrups in an RCC beam of rectangular cross-section having an effective depth of 300 mm?

A

300mm

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B

275mm

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C

250mm

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D

225mm

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Solution

The correct option is D 225mm
As per clause 26.5.1.5 of IS: 456-2000, the maximum spacing of shear reinforcement measured along the axis of member shall not exceed 0. 75 d for vertical stirrups and 'd' for inclined stirrups at 45 ° , where'd' is the effective depth of the section under consideration. In no case shall the spacing exceed 300 mm.
\Maximum spacing $= 0.75 d = 0.75 \times 300$
$= 225 m m$

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