Connections can be classified into 3 categories:
The classification according to moment strength is grouped under 3 sections: full strength, partial strength, and hinge.
According to rotational rigidity, it is divided into 3, which are rigid, semi-rigid, and hinged.
According to the rotational capacity, it is classified as highly and moderately ductile.
The design rules related to moment-resisting and hinged connections are explained in the relevant sub-sections.