Question

A beam has triangular cross-section, having base 'b' and altitude 'h'.If a section of the beam is subjected to a shear force F, the shear stress at the level of neutral axis in the cross-section is given by

• A. $\frac{4F}{3bh}$
• B. $\frac{3F}{4bh}$
• C. $\frac{8F}{3bh}$
• D. $\frac{3F}{8bh}$

Answer 1

The correct option is C $\frac{8F}{3bh}$

Maximum shear stress occurs at mid depth and the value is $\frac{3F}{bh}$. In triangular sections. At neutral axis the shear stress is $\frac{8F}{3bh}$ .