Answer:
There can be several reasons for this error.
Missing Surface Reinforcement
In the surface with the punching nodes is no reinforcement available.
You can find out how to create surface reinforcement here:
Missing Dimensions
In RFEM 6, the geometry of punching nodes is usually determined using the cross-section of the connected structural component (wall, column). If a slab or a plate is designed separately within a 2D positional analysis and thus no walls or columns in the form of surfaces or members exist in the model, RFEM cannot automatically determine the structural component dimensions. In this case, it is necessary to manually enter the dimensions:
Not Supported Nodes
In the case of punching nodes that are not supported by a nodal nor linear support, the dimensions of the connected components can be defined via the ultimate configurations.
More information can be found here:
Supported Nodes
In the case of punching nodes that are supported by a nodal nor linear support, which represent a connected component, you can specify the dimensions in the support settings.
More information can be found here:
- Online Manual RFEM 6 | Fictitious Column (Nodal Support)
- Online Manual RFEM 6 | Fictitious Wall (Line Support)
Invalid Nodes
In the punching nodes are located in the middle of a line load or a line support, no punching shear occurs. Therefore, these nodes are indicated as not valid.
