FAQ 003290 | In the RF-CONCRETE Surfaces, I am trying to design surfaces and get a high minimum r...

Video

First Steps with RFEM

First steps

We provide hints and tips to help you get started with the RFEM program.

18 July 2019

000437

Adrian Langhammer

Please accept Marketing Cookies to watch this video.

Question

In the RF-CONCRETE Surfaces, I am trying to design surfaces and get a high minimum reinforcement as a result of the SLS-design in some areas. In other areas, however, the minimum reinforcement is significantly smaller. What is the reason?

Answer

By default, the determination of the minimum reinforcement is based on a stress distribution in the tension zone before initial cracking (coefficient kc according to EN 1992-1-1 7.3.2 (7.2.)), which depends on the external loading (Figure 01). That is, by default, kc is variable.

Depending on the state of stress (e.g. pure bending, bending and tension, bending and compression, and pure tension), the minimum reinforcement can vary across the surface.

However, it is also possible to adjust the presetting. It is thus possible to select a bending constraint (kc = 0.4) or a centric constraint (kc = 1.0) (Figure 02).

As soon as a constant value for kc is assumed, the minimum reinforcement is independent of the external load and is applied uniformly over the structural component.

In this context, you can also select the direction in which the force should be considered (Figure 03)

Keywords

Dlubal FAQ Frequently Asked Question FAQ about Dlubal Question and Answer about Dlubal

Links

Write Comment...

Write Comment...

  • Views 59x
  • Updated 19 November 2020

Contact us

Do you have any questions about our products or need advice on selecting the products needed for your projects?
Contact us via our free e-mail, chat, or forum support or find various suggested solutions and useful tips on our FAQ page.

+49 9673 9203 0

info@dlubal.com