Given is a shearforce V = 4000 N acting vertically downward
on the beam crosssection as shown. Determine :
 the central moment of inertia
 the shearstress at top and bottom of beam, y=±h/2
 make a rough sketch of Q(y)/b(y) as function of y. What happens at y=± (h/2t) ?
 the shear stress in the neutral axis ( y=0 )
 Is the value determine under 4 the maximum ?

h = 6 cm
a = 4 cm t = 1 cm
