#### Further Information

In addition to our technical support (e.g. via chat), you’ll find resources on our website that may help you with your design using Dlubal Software.

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• ### How can I define an average region on the entire circumference of pipes?

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If you have modeled your pipe surface as a quadrangle surface, you can achieve this by splitting the surface at least once.

Then, define a new average region for the surface by selecting the center, defining the dimension, specifying the vector, and determining the averaging type you want.

You can easily define the vector by picking two points.

• ### In spite of having defined average regions, they are not considered in the design in RF‑LAMINATE Surfaces. Which setting did I overlook?

In order to consider the average regions in the design in RF‑LAMINATE Surfaces, it is always necessary to activate them in the detailed settings of the add-on module. See Figure&nbso;01 with the detailed settings in RF‑LAMINATE.
• ### When evaluating the results, very high axial forces arise in some FE nodes, for example, due to temperature load cases. How can I model surfaces to avoid the unrealistic effects?

If there are the stresses concentrated at an FE node, it is usually a singularity problem. In many cases, it is often sufficient to arrange average regions at the corner points or singularity locations (see Figure 01). The stresses in these areas should be then significantly smaller.

There are several articles about singularities and average regions available in our Knowledge Base.

• ### Can I define average regions on curved surfaces as well?

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To define an average region on curved surfaces, the projection direction has to be clearly defined. Since this is not possible for the "Perpendicular" option, you can define the direction yourself. Either along the global axes X, Y, and Z, or with a vector.
• ### In spite of having defined average regions, they are not considered in the design in RF‑CONCRETE Surfaces. What setting did I miss here?

To consider the average regions in the design in RF‑CONCRETE Surfaces, it is always necessary to activate them in the detailed settings of the add-on module. For this, see Figure 01 with the detailed settings in RF‑CONCRETE Surfaces.

In the design in RF‑CONCRETE Surfaces, the average regions are considered for the ultimate limit state design (ULS) as well as for the analytical calculation of the serviceability limit state (SLS).

If not, contact us via our free e-mail, chat, or forum support, or send us your question via the online form.

#### First Steps

We provide hints and tips to help you get started with the main programs RFEM and RSTAB.

#### Wind Simulation & Wind Load Generation

With the stand-alone program RWIND Simulation, wind flows around simple or complex structures can be simulated by means of a digital wind tunnel.

The generated wind loads acting on these objects can be imported to RFEM or RSTAB.

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