Question

A rectangular beam is of size 230 mm x 350 mm (effective depth). The factored shear force acting at a section is 80 kN. If the permissible shear stress in concrete is 0.25 MPa, the design shear force is nearly

• A. 100 kN
• B. 80 kN
• C. 60 kN
• D. 20 kN

Answer 1

The correct option is C 60 kN

$V_u=80kN$

$V_{cu}={\tau }_{c}Bd$

$=0.25\times 230\times 300\times \frac{1}{{10}^3}$

$=20.125kN$

$V_{su}=Designshearforce$

$=80-20.125$

$=59.875say60kN$