Seismosoft | Earthquake Engineering Solutions

how to made rigid diaphragm in 2D RC frame and what meaning master point and slave point and the rigid diaphragm made to each story or one diaphragm for building

For a 3D model, it is typical to have one diaphragm per floor with many different possibilities for master/slave options. One popular option would be to have a node at the center of mass of each floor serve as the master, with other nodes on that floor slaves. Not sure why you need rigid diapghagm for 2D?

I made verfication for aproblem used rigid diaphrame in 2d and when made the problem without it the result not matched so i want to made it in 2d frame how

Maybe a bit more description of the desired model would enable forum users to provide some guidance.