The maximum strain in concrete at the outermost compression fibre is taken as _____ in bending, as per IS456: 2000. 

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  1. 0.0047
  2. 0.0096
  3. 0.0035
  4. 0.0038

Answer (Detailed Solution Below)

Option 3 : 0.0035
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Explanation:

As per clause No. 38.1 of IS 456:2000, the maximum strain in concrete at the outermost compression fibre is taken as 0.0035 in bending.

While, as per clause No. 39.1 of IS 456:2000, the maximum compressive strain in concrete in axial compression is taken as 0.002.

The maximum compressive strain at the highly compressed extreme fibre in concrete subjected to axial compression and bending and when there is no tension on the section shall be 0.0035 minus 0.75 times the strain at the least compressed extreme fibre.
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