Discussion
In a slab, the minimum reinforcement for Fe 250 provided is-
Answer: D
The minimum reinforcement for Fe 250 in a slab is 0.15% of its gross sectional area.
IS 456 (clause 26.5.2.1) requires the reinforcement in either direction in slabs to be at least 0.15 percent of the gross cross-sectional area when mild steel (Fe 250) is used. The limit is reduced to 0.12 percent for high strength deformed bars, which are stronger.
0.12 percent is the HYSD value, the usual trap, and 0.10 and 0.14 percent are not code values.
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