#### Further Information

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• ### Are the result values in the FE elements averaged or nodal values? Where can I set this?

New FAQ 004132 EN

When displaying the result values "Values on Surfaces", there are two distinctions.

The result values are displayed either on the "Grid and Manually Set Points" or on the "FE Mesh Points."

When displaying "In Grid and Manually Set Points", the results are displayed in the distance of the grid points.

The distance of the grid points is a property of the surface and can be controlled in the "Edit Surface" dialog box.

Alternatively, you can display the result values in "FE Mesh Points."

The number of FE mesh points depends on the generated FE mesh size.

You can control the displayed color gradient by selecting the option "Internal Forces/Stresses" in the Display navigator. See the FAQ below.

• ### How do I transfer a field of nodes instead of just a single node via the COM interface in VBA?

New FAQ 003542 EN

To transfer several elements, you first have to create a field (array) in VBA:

Dim nodes (0 to 2) as RFEM5.Node

Then, you can transfer all nodes at once to the field (here three elements 0,1,2) with the method IModelData.SetNodes ().

These methods are also available e.g. for the following structural elements:

IModelData.SetLines ()IModelData.SetMembers ()IModelData.SetSurfaces ()
• ### How can I display membrane stresses in RF-STEEL Surfaces results?

FAQ 003406 EN

Membrane, bending or other stresses can be switched on using the Details icon in RF-STEEL Surfaces.
• ### Where can I find the RF-CONCRETE Deflect add-on module? How can I activate it?

FAQ 003356 EN

The RF-CONCRETE Deflect add-on module is a module extension of RF-CONCRETE Surfaces.

The calculation of deformations in state II with RF-CONCRETE Deflect can be activated by selecting the "Analytical Method" in the "Serviceability Limit State" tab in RF-CONCRETE Surfaces.

In the detail settings, you can activate the option "Deformations with RF-CONCRETE Deflect."

The results from the calculation with RF-CONCRETE Deflect are then available for the respective design case in the "Serviceability Limit State" tab of the Results navigator.

• ### How can a stability analysis be carried out for walls in RF-CONCRETE Surfaces?

FAQ 003339 EN

Currently, there is no option to perform a stability analysis in the RF-CONCRETE Surfaces add-on module. However, it may be possible to perform a simplified design by means of a result beam by means of the nominal curvature method in RF-CONCRETE Columns.

• ### Is it also possible to rearrange the distribution of stresses and internal forces in the surfaces? For example, averaged within an FE element?

FAQ 003279 EN

Yes, there is a setting in the Display navigator for this. See the following graphics:

Constant on elements

Not continuous

Continuous within surfaces

Continuous as a whole

• ### Why do I receive error message 226 in RF-CONCRETE Surfaces? The check for the crack width is omitted or the design ratio is "0.00".

FAQ 003154 EN

Message No. 226 appears in result dialog boxes 3.1 to 3.3 in RF-CONCRETE Surfaces if the concrete tensile stresses from the defined load for the surface to be designed are smaller than the concrete tensile strength.

In this case, message 226 is displayed with an appropriate message.

By clicking the [i] button, you can open the design details for the respective inconsequential location and display the intermediate values for the determination of the applied tension stress.

• ### Is it possible to use a contact solid or a layered FE mesh for a solid, even for curved surfaces? I receive Error No. 848.

FAQ 003118 EN

Yes, the contact solid or a layered FE mesh also works for curved surfaces. However, the following restrictions shall apply:

• The surface is only simply curved
• The curved surfaces are modeled via concentric circles (see Figure 01)
The easiest way to create the lines is to use the function "Set Parallel Line". (see Figure 02)

• ### How do I find the extreme values of stresses or internal forces in a complex RFEM file?

FAQ 003085 EN

The result output with result values on surfaces is very helpful for this.

It is already preset that only extreme values are displayed. In addition, you can specify in the Results navigator whether the extreme values of the entire model, all surfaces or solids, or all local peak values should be displayed.

• ### Is there a possibility to calculate walls as sandwich elements in RFEM 5 or in RF-CONCRETE Surfaces?

FAQ 003081 EN

Unfortunately, the RF-CONCRETE Surfaces Add-on module to RFEM 5 is not designed for the calculation of sandwich elements. Therefore, there are no essential designs for structural components like e.g. design of the shear joint. No matter if it is a wall or a slab.

The bending design, and in particular the check of shear resistance, is considered for constant cross-sections.

You can model the sandwich elements as surfaces with a constant thickness and perform the design in RF-CONCRETE Surfaces. The additionally required designs would have to be performed manually, if necessary.

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