If n = number of members and y = number of joints, then for a perfect frame, n =
The frame may be defined as a structure, made up of several bars, riveted or welded together. The bars are also known as the members of the frame. There are three types of frames namely
Perfect frames:- A frame is called a perfect frame, which has got the number of members as given by the formula
n = (2j − 3)
n= Number of members
j= Number of joints.