An L5x 31/2 angle, as shown in the accompanying figure, is to carry 20 kips dead load and 60 kips live load. Using one gage line of holes for -in.-diam bolts in each leg, what would be the minimum stagger s required to accomplish this? Consider the load to be transferred by bolts in the 5-in. leg, while the holes in the 3 Z -in. leg may be considered open ones (i.e., not to transmit the tensile load). U. A36 steel.

80 k Eg LS X3 / X/ Gusset plate- Other holes not shown (assume at least three)