For spring, custom and RBS connections, the program internally inserts a rigid end zone element (link) if Rigid End Zone option is invoked in the Criteria dialog.

Rigid links for beams and columns are always enforced for SidePlate^® or DuraFuse^® type connections whether the option is invoked or not.

For example, the following figure shows how an analytical model created for a beam with spring, custom or RBS type connection if Rigid End Zone option is invoked. In the following figure, zero percent reduction is assumed.

Rigid End Zone Elements for Beams with Connections