FAQ 005472 | In the table of the objects to be designed in the Concrete Design add-on, punching nodes are...

Question:
In the table of the objects to be designed in the Concrete Design add-on, punching nodes are listed in the not valid/deactivated column, although I have defined them as punching nodes. How can I fix this?

Answer:
There can be several reasons for this error.

► Image | Not Valid / Deactivated Punching Nodes https://www.dlubal.com/en/img/048363

Missing Surface Reinforcement

In the surface with the punching nodes is no reinforcement available.

► Image | Missing Surface Reinforcement https://www.dlubal.com/en/img/048364

You can find out how to create surface reinforcement here: Surface Reinforcement

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. Instead, you have to specify the dimensions manually:

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.

► Image | Missing Dimensions – Not Supported Nodes https://www.dlubal.com/en/img/048365

More information can be found here: Ultimate Configurations (Punching)

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.

► Image | Missing Dimensions – Supported Nodes (Nodal Supports) https://www.dlubal.com/en/img/048366
► Image | Missing Dimensions – Supported Nodes (Line Supports) https://www.dlubal.com/en-US/img/048367

More information can be found here:
Fictitious Columns (Nodal Supports) | Fictitious Wall (Line Supports)

Not Valid 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.

► Image | Not Valid Nodes https://www.dlubal.com/en-US/img/048368

• FAQ 005472