Question

If a 2-legged 8 mm diameter HYSD bar is used as shear reinforcement for a beam of width 230 mm and effective depth 300 mm, what is the nearest magnitude of the spacing of minimum shear reinforcement?

• A. 420mm
• B. 390 mm
• C. 350 mm
• D. 320 mm

Answer 1

The correct option is B 390 mm

$\frac{A_{sv}}{S_v}=\frac{0.4B}{0.87f_y}$

$\Rightarrow$ $\frac{2\times \frac{\pi }{4}\times 8^2}{S_v}=\frac{0.4\times 230}{0.87\times 415}$

$\therefore S_v=394mm\simeq 390mm$