Answer:
Where the geometries become complicated, it is difficult to use analytical methods for the design. The weld elements in RFEM 6 are particularly helpful for such applications.
RFEM 6 allows for design checks for different types of welds.
In the Joint type list, you can select how the surfaces to be connected are related to each other.
Then, select a weld type.
Finally, it is necessary to define the weld parameters.
The welds do not affect the stiffness of the model. You use the stresses from the surface elements and evaluate them according to the regulations.