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2020-09-08

FAQ 004707 | I do not obtain any deformations in the results of the calculation with...

Name: FAQ 004707 | I do not obtain any deformations in the results of the calculation with...
Uploaded: 2020-09-08T00:00:00.000+01:00

Question:
I do not obtain any deformations in the results of the calculation with RF‑CONCRETE Surfaces. What can be the reason?

Answer:
First, check to see if the "design of deformation" has been activated in the settings for the calculation of the SLS design checks.

Furthermore, check whether a load for the "quasi-permanent" design situation has been specified in the "Serviceability" tab of Window 1.1. By default, the calculation of deformations in RF‑CONCRETE Surfaces (with RF‑CONCRETE Deflect or RF‑CONCRETE NL) requires a quasi-permanent load.

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Videos

Knowledge Base

KB 000586 | Considering Shrinkage

Length: 00:00:55 min

FAQ

FAQ 004707 | I do not obtain any deformations in the results of the calculation with...

Length: 00:00:48 min

FAQ

FAQ 004687 | When performing "manual definition of the reinforcement areas" in RF‑CONCRETE Surfaces ...

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FAQ

FAQ 004665 | For design with CONCRETE NL, is the creep applied to the entire cross-section, or ...

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FAQ

FAQ 004668 | When I create a user-defined result value, the RFEM solver window opens briefly ...

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FAQ

FAQ 004579 | In RF‑CONCRETE Members, I can display the rendering of a provided reinforcement ...

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FAQ 004525 | I am trying to verify RF‑CONCRETE Surfaces based on the results of the example...

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FAQ

FAQ 004508 | When opening an RFEM file, the entries in RF‑CONCRETE Surfaces are lost. Is this ...

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Product Feature

Punching Shear Design for All Section Shapes

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Knowledge Base Articles

Shrinkage and creep are time-dependent deformation properties of concrete that usually have to be considered in the serviceability limit state design.

The fatigue design according to EN 1992-1-1 must be performed for the structural components subjected to large stress ranges and/or many load changes. In this case, the design checks for the concrete and the reinforcement are performed separately. There are two alternative design methods available.

Using an example of a steel fiber-reinforced concrete slab, this article describes how the use of different integration methods and of a different number of integration points affects the calculation result.

KB 001858 | Wind Loads on Circular Dome Roof Structures According to ASCE 7-22

When it comes to wind loads on building type structures as per ASCE 7, numerous resources can be found to supplement design standards and aid engineers with this lateral load application. However, engineers may find it more difficult to find similar resources for wind loading on non-building type structures. This article will examine the steps to calculate and apply wind loads as per ASCE 7-22 on a circular reinforced concrete tank with a dome roof.

Screenshots

Results of Calculation with User-Defined Basic Control Perimeter Area

RFEM Model of Palazzo Meridia Office and Retail Building in Nice, France | © Architecture-Studio

Model of Markas Headquarters, Italy | © ATP/Bause

Model of Storage Facility Construction with Deformation Results in RSTAB 9 | © SPIC SAS

RFEM Model of Pedestrian and Cyclist Bridge in Eichstätt, Germany | © Bergmeister Ingenieure

Model 004386 | Multistory Reinforced Concrete Building | CSA A23.3:19

Design Level 2 – Design Setting

Design Level 1 – Design Setting

Product Features

Feature 002801 | Punching Shear Design for All Section Shapes

Do you have individual column sections and angled wall geometries, and need punching shear design for them?

No problem. In RFEM 6, you can perform punching shear design not only for rectangular and circular sections, but for any cross-section shape.

Feature 002722 | Sensitivity Coefficient

For a response spectrum analysis of building models, you can display the sensitivity coefficients for the horizontal directions by story.

These key figures allow you to interpret the sensitivity to stability effects.

Feature 002720 | Modal Relevance Factor for Stability Analysis

The modal relevance factor (MRF) can help you to assess to which extent specific elements participate in a specific mode shape. The calculation is based on the relative elastic deformation energy of each individual member.

The MRF can be used to distinguish between local and global mode shapes. If multiple individual members show significant MRF (for example, > 20%), the instability of the entire structure or a substructure is very likely. On the other hand, if the sum of all MRFs for an eigenmode is around 100%, a local stability phenomenon (for example, buckling of a single bar) can be expected.

Furthermore, the MRF can be used to determine critical loads and equivalent buckling lengths of certain members (for example, for stability design). Mode shapes for which a specific member has small MRF values (for example, < 20%) can be neglected in this context.

The MRF is displayed by mode shape in the result table under Stability Analysis → Results by Members → Effective Lengths and Critical Loads.

You can use the "Plate Cut" component to cut plates (for example, gusset plates, fin plates, and so on). There are various cutting methods available:

Plane: The cut is performed on the closest surface to the reference plate.
Surface: Only the intersecting parts of plates are cut.
Bounding Box: The outermost dimension consisting of width and height is cut out of the plate as a rectangle.
Convex Envelope: The outer hull of the cross-section is used for the plate cut. If there are fillets at the corner nodes of the cross-section, the cut is adapted to them.

Frequently Asked Questions (FAQ)

Which products do you recommend for the structural analysis and design of reinforced concrete structures?

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?

How can I generate an area load on members via cells in RFEM 6 or RSTAB 9?

How can I use graphic templates for multi printing of a reinforcement?

I use a template for the data exchange with Revit or Rhino/Grasshopper, and get an error message.

Is there a way to reset the 3D view to the original perspective if I have adjusted it using the 3D cube?

Customer Projects

Pedestrian and Cyclist Bridge "Herzogsteg" in Eichstätt, Germany

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Deformations in RFEM | © Baumruck + Oswald

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Pedestrian Bridge "Am Freischütz" over Federal Highway 236 | © VIC Planen und Beraten GmbH | Photo: René Legrand

Freischütz Pedestrian Bridge, Germany

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