What is "gusset plate"

n. a metal plate used to strengthen a joist [syn: gusset]

Gusset plates are thick sheets of steel that are used to connect beams and girders to columns or to connect truss members. A gusset plate can be fastened to a permanent member either by bolts, rivets or welding or a combination of the three. Gusset plates not only serve as a method of joining steel members together but they also strengthen the joint. They are used in bridges and buildings as well as other structures.