Angle Members:
(a) Rivets linking gusset plate along with lug angle is to share less load then the rivets connecting it with the main member.
(b) Lug angles and their links to the gusset plate should develop strength at least 20% more than the force in the outstanding leg of the angle.
(c) An attachment of the lug angle to the main angle member shall be able to develop at least 40% more than this force.
(d) The overall area of the member shall be taken as effective (minus the area of the holes).