Correct Answer - Option 2 : 0.0015
Concept:
As per IS 456:2000,
The slab is one-way if \(\frac{{{\ell }_{y}}}{{{\ell }_{x}}}>2\)
Where, ℓy, ℓx are the lengths of the longer and shorter spans respectively.
The minimum percentage of reinforcement is 0.15% of the gross area if a mild steel bar is used and 0.12% of the gross area if the HYSD bar is used.
Maximum dia of reinforcement, \({{\phi }_{max}}<\frac{D}{8}\)
(i) Main Bars are spaced at \(min\left\{ \begin{matrix} 3d \\ 300~mm \\ \end{matrix} \right.~\)
(ii) Distribution Bars are spaced at \(min\left\{ \begin{matrix} 5d \\ 450~mm \\ \end{matrix} \right.\)
Important Point:
The minimum percentage of reinforcement is 0.12% of the gross cross-sectional area if HYSD bars are used.
