![Pinned Beams in Semi-Rigid Diaphragms](https://blog.risa.com/hs-fs/hubfs/Imported_Blog_Media/semirigid_hero.png?width=700&name=semirigid_hero.png)
May 16, 2019
Pinned Beams in Semi-Rigid Diaphragms
When using semi-rigid diaphragms in a RISAFloor/RISA-3D model, it is possible to see negative moments at the ends of pinned beams as a result of the link between the semi-rigid diaphragm and the beam-column connection.