A ring plate joins the flanges or webs of a set of incoming members sharing a nodal connection. It is penetrated by a perpendicular cylindrical member, as shown in green in the following examples.
The physical axes of the incoming members are end-point connected and coplanar. The common end point is the nodal point. The axis of the perpendicular member traverses the nodal point. A ring plate can be defined by a single incoming member and the perpendicular member. The incoming flange and web plate parts are trimmed. For built-up members, the incoming flange and web parts are trimmed by the edges of the ring plate.