1 Beam of L= 6 ft (1.83 m) span with P = 96 k point load
2 Composite wide-flange beam W10x49 with 8x½ inch stiffener plates
Shear force V = P/2 = 96/2 V = 48 k
Bending moment M = 48(3) M = 144 k’
Since the beam would fail in bending, a composite beam is used.
Shear flow q in welded plate connection
Since there are two welds, each resists half the total shear flow
Note: in this steel beam, bending is stress is more critical than shear stress; this is typical for steel beams, except very short ones.