Simply supported timber beam with cross$-$section $50200mm$ and span $I=3500mm($Figure $2).$

The beam is located is located indoor in a residential building.

Timber class strength is $C22$ and the design load is a medium$-$term load uniformly distributed $(q=2$

$k\frac{N}{m}.$

Verify the bending capacity when $($a$)$ the beam is laterally restrained throughout the length

of its compression edge; $($b$)$ the beam is not laterally restrained throughout the length of its

compression edge.

Verify the shear capacity.