Question

For a beam cross section, width = 230 mm, effective depth = 500 mm, the number of rebars of 12 mm diameter required to satisfy minimum tension reinforcement requirement specified by IS-456:2000 (assume grade of steel as Fe500) is

• A. 2

Answer 1

The correct option is A 2
$\frac{A_{stmin}}{bd}=\frac{0.85}{f_y}$
$A_{st}=\frac{0.85}{500}\times 230\times 500m{m}^2$
$n=\frac{A_{st}}{\frac{\pi d^2}{4}}=\frac{0.85\times 230}{\frac{\pi }{4}(12{)}^2}=2nos$