Question
Download Solution PDFThe minimum reinforcement used in either direction of the slabs shall NOT be ______ of the total cross-sectional area for Fe 250 grade steel.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
As per IS 456 : 2000,
Minimum percentage of reinforcement:
- 0.15 % of the gross area if a mild steel bar is used.
- 0.12 % of the gross area if the HYSD bar is used.
Diameter
Maximum dia of reinforcement, \({{\phi }_{max}}<\frac{D}{8}\)
Spacing:
(i) Main Bars are spaced at \(min\left\{ \begin{matrix} 3d \\ 300~mm \\ \end{matrix} \right.~\)
(ii) Distribution Bars are spaced at \(min\left\{ \begin{matrix} 5d \\ 300~mm \\ \end{matrix} \right.\)
Important Points
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.
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