# Transverse Shear in Beams: Summary and Further Reading

Course subject(s) 5. Transverse Shear in Beams

### Summary of Key Equations

This unit centres around one equation; the Shear Formula given below.

$\tau=\frac{VQ}{It}$

The new quantity introduced in this equation is Q, which is the first moment of area of area A’ as shown below.

$q=\int_{A'}y dA =\bar{y'}A'$

For thin-walled profiles, the same equation can be used, however, thickness and shear stress are multiplied to obtain shear flow, q:

$q=\frac{VQ}{I}$