I'm a beginner in using Femap, so I would like to receive some comments and tips about how to model a railing type object. I have linked a screenshot of the model: it consists of two plates, which are linked by three pipes welded on the side of the plates. I've fixed the lower sides of the plates, extended the pipe and fixed their bounduary points. For the moment the load case is very simple, just nodal force on the top pipe in the y direction. The plates are modeled through 2D plate-element type, whilst the pipes are modeled with 1D beam-element type. I get several fatal errors (tried param,bailout,-1 and frequency analysis) 4698, 4192, 4690, 307, 9002: due to my poor experience I'm not succeeding in finding the error, I'm just trying different solutions. I guess the error may be in the connection between beam element and plate element (I used as connecting region the curve of the pipe and element on the plate), on the fact that the plate is divided into two surfaces (i'm not sure because the mesh seems to be good around the contact area), or else can be that the plate elements nodes, from what I understood, need to have a rotation DOF especially fixed. For whoever will help me thank you in advance and sorry for any stupid question! Kind Regards.