A W18 x 86 beam is riveted to a W24 x 117 girder by a connection similar to that in Fig. 1-13. The diameter of the rivets is 7/8 in., and the angles are each 4 31/2 3/8 in. For each rivet, assume that the allowable stresses are t = 15 ksi and o 32 ksi. = Find the allowable load on the connection. Girder Figure 1-13 Beam