# rectangular beam

## Bending Stress and Shearing Stress in Timber Beam

 Bending Stress $f_b = \dfrac{M}{S} = \dfrac{Mc}{I}$   Horizontal Shear Stress $f_v = \dfrac{VQ}{Ib}$ For Rectangular Sections $f_b = \dfrac{6M}{bd^2}$   $f_v = \dfrac{3V}{2bd}$