Answer:
In most cases, there is a hinged connection between the ceilings or walls in order to prevent the moments from the ceiling slab from being transferred into the walls. If there are also a line hinge and a downstand beam (rib) on the same line, the surface to which the line hinge was assigned is highly important.Solution
Since the rib is usually assigned to the ceiling slab, the line hinge should be assigned to the wall (see Image 01). If this is not the case, an error message appears (see Image 02), and the creation of the rib must be aborted.
The same applies to the line hinges on free plate edges. If a line hinge has been created by mistake, an error message also appears when creating the rib (see Image 03 and Image 04).
