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2015-04-29

RF-CONCRETE | Input

In order to facilitate the data input, surfaces, members, sets of members, materials, surface thicknesses, and cross-sections are preset in RFEM. It is possible to select the elements graphically using the [Select] function. The program provides access to the global material and section libraries. Load cases, load combinations, and result combinations can be combined in various design cases. You can enter all geometric and standard-specific reinforcement settings for the reinforced concrete design in a segmented window. The geometry entries in both RF‑CONCRETE modules differ from each other.

In the RF-CONCRETE Members add-on module, for example, This includes, for example, specifications for the curtailment of rebars, number of layers, cutting ability of links, and anchorage type. For the fire resistance design of reinforced concrete members, you have to define the fire resistance class, the fire‑related material properties, and the cross‑section sides exposed to fire.
In the RF‑CONCRETE Surfaces add‑on module, it is necessary to specify, for example, the concrete cover, the reinforcement direction, the minimum and the maximum reinforcement, the basic reinforcement to be applied, or the designed longitudinal reinforcement, as well as the rebar diameter.

Surfaces or members can be summarized in special "reinforcement groups", each defined by different design parameters. This way, it is possible to efficiently calculate alternative designs with different boundary conditions or modified cross‑sections.

RF-CONCRETE Surfaces - Detail Settings

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Events

2024-04-30

Online Training

RFEM 6 | Students | Introduction to Timber Design

2024-05-02

Construction Stages in Membrane Structures with RFEM 6

Webinar

Construction Stages in Membrane Structures with RFEM 6

2024-05-08

Online Training

RFEM 6 | Students | Introduction to Reinforced Concrete Design

2024-05-08

$Cross-Section Modeling and \n Stress Analysis in RSECTION 1$

Webinar

Cross-Section Modeling and Stress Analysis in RSECTION 1

2024-05-15

Online Training

RFEM 6 | Students | Introduction to Steel Design

2024-05-16

Consideration of Construction Stages in RFEM 6

Webinar

Consideration of Construction Stages in RFEM 6

2024-05-23

Most Frequently Asked Questions Answered by Dlubal Support Team

Webinar

Most Frequently Asked Questions Answered by Dlubal Support Team | May 2024

2024-05-29

$Steel Structures in RFEM 6 \n Part 1: Modeling, Load Input$

Webinar

Modeling and Design of Steel Structures in RFEM 6 | Part 1: Modeling, Load Input

2024-06-06

$Steel Structures in RFEM 6 \n Part 2: Combinations, Design, Documentation$

Webinar

Modeling and Design of Steel Structures in RFEM 6 | Part 2: Combinations, Design, Documentation

2024-06-20

Webinar

Most Frequently Asked Questions Answered by Dlubal Support Team | June 2024

2024-10-16

Online Training

RFEM 6 | Students | Introduction to Member Design

2024-10-23

Online Training

RSECTION 1 | Students | Introduction to Strength of Materials

Videos

Knowledge Base

KB 001710 | Design of Concrete Columns Subjected to Axial Compression with RF-CONCRETE Members

Length: 00:01:09 min

Event

Online Training | RFEM for Students | Part 3 | 15.06.2021

Length: 02:50:31 min

FAQ

FAQ 005020 | Why does the note 155) appear as a result of the reinforced concrete design of members ...

Length: 00:00:33 min

FAQ

FAQ 005016 | How can I select a diameter of rebars that is not available in the list ...

Length: 00:00:24 min

Knowledge Base

KB 000995 | Design of Shear Joint

Length: 00:00:32 min

Knowledge Base

KB 000913 | Fire Resistance Design for Reinforced Concrete Members

Length: 00:00:46 min

FAQ

Why do I get Error No. 10203 for a result beam when performing design with RF‑CONCRETE Members?

Length: 00:00:00 min

Knowledge Base

KB 000889 | Minimum Reinforcement Reduction of Slow-Curing Concrete

Length: 00:00:51 min

Event

Introduction to RFEM Program

Length: 00:00:00 min

Playlist

Models to Download

FAQ 005020 | Why does the note 155) appear as a result of the reinforced concrete design of members for the existing stirrup reinforcement?

879x

30x

Reinforced Concrete Beam

Thesis on CLT Building by Miryea Alfano, Italy

716x

Timber and Concrete Building

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60x

Tapered Frame

705x

31x

Statically Determinate Beam

549x

16x

Concrete Slabs

826x

39x

Reinforced Concrete Beam

1059x

25x

Isostatic Beam

Model of High-Rise Residential Building in RFEM (© bauart Konstruktions GmbH & Co. KG)

1088x

High-Rise Apartment Building Made of Reinforced Concrete

Village Center Component A in RFEM (© Dipl.-Ing.Rainer Zangerle)

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Reinforced Concrete Building

Knowledge Base Articles

RFEM Model with Permanent and Variable Loads

This article deals with rectilinear elements of which the cross-section is subjected to axial compressive force. The purpose of this article is to show how very many parameters defined in the Eurocodes for concrete column calculation are considered in the RFEM structural analysis software.

RF-CONCRETE Members also includes the design of a shear joint. In order to perform this design, you should select the "Shear joint available" check box in Window 1.6, Shear Joint tab.

Fire Resistance Design with CONCRETE and RF-CONCRETE Members

The reinforced concrete design for fire situations is carried out according to the simplified method based on EN 1992-1-2, Clause 4.2. The "zone method" described in Annex B.2 is used: The cross-section is subdivided into a number of parallel zones of equal thickness, and their temperature-dependent compressive strength is determined. The reduced load-bearing capacity in the event of fire exposure is thus represented by a reduced structural component's cross-section with reduced strengths.

Minimum Reinforcement Reduction of Slow-Curing Concrete

In the case of using slow‑curing concrete (usually for thick components), you can reduce the calculated minimum reinforcement by a factor of 0.85 to apply the load due to restraint, according to EN 1992‑1‑1, Section 7.3.2. However, a precondition for reduction is that the characteristic value of the strength development r = f_cm2 / f_cm28 does not exceed 0.3. Other key requirements for the application of this reinforcement reduction are specified explicitly in the final planning documents.

Screenshots

Product Features

Transfer of Reinforcement from RFEM/RSTAB (Top) to Revit (Bottom)

The reinforcement proposal from RF-/CONCRETE Members can be exported to Revit. The rectangular and circular cross-sections are currently supported.

The reinforcement bars can be modified retroactively in Revit.

Floor Design in RF-CONCRETE Surfaces (© Rohmer)

Automatic import of internal forces from RFEM
Ultimate limit state and serviceability limit state design
The module extension EC2 for RFEM enables the design of reinforced concrete members according to EN 1992‑1‑1:2004 (Eurocode 2) and the following National Annexes:
- DIN EN 1992-1-1/NA/A1:2015-12 (Germany)
- ÖNORM B 1992-1-1:2018-01 (Austria)
- NBN EN 1992-1-1 ANB:2010 (Belgium)
- BDS EN 1992-1-1:2005/NA:2011 (Bulgaria)
- EN 1992-1-1 DK NA:2013 (Denmark)
- NF EN 1992-1-1/NA:2016-03 (France)
- SFS EN 1992-1-1/NA:2007-10 (Finland)
- UNI EN 1992-1-1/NA:2007-07 (Italy)
- LVS EN 1992-1-1:2005/NA:2014 (Latvia)
- LST EN 1992-1-1:2005/NA:2011 (Lithuania)
- MS EN 1992-1-1:2010 (Malaysia)
- NEN-EN 1992-1-1+C2:2011/NB:2016 (Netherlands)
- NS EN 1992-1 -1:2004-NA:2008 (Norway)
- PN EN 1992-1-1/NA:2010 (Poland)
- NP EN 1992-1-1/NA:2010-02 (Portugal)
- SR EN 1992-1-1:2004/NA:2008 (Romania)
- SS EN 1992-1-1/NA:2008 (Sweden)
- SS EN 1992-1-1/NA:2008-06 (Singapore)
- STN EN 1992-1-1/NA:2008-06 (Slovakia)
- SIST EN 1992-1-1:2005/A101:2006 (Slovenia)
- UNE EN 1992-1-1/NA:2013 (Spain)
- CSN EN 1992-1-1/NA:2016-05 (Czech Republic)
- BS EN 1992-1-1:2004/NA:2005 (United Kingdom)
- TKP EN 1992-1-1:2009 (Belarus)
- CYS EN 1992-1-1:2004/NA:2009 (Cyprus)
In addition to the National Annexes (NA) listed above, you can also define a specific NA, applying user‑defined limit values and parameters.
Flexibility due to detailed setting options for basis and extent of calculations
Fast and clear results output for an immediate overview of the result distribution after the design
Graphical results output integrated in RFEM; for example, required reinforcement
Numerical results clearly arranged in tables and graphical display of the results in the model
Complete integration of results in the RFEM printout report

Free definition of two or three reinforcement layers in the ultimate limit state
Vectorial representation of the main stress directions of internal forces allowing optimal orientation adjustment of the third reinforcement layer to the actions
Design alternatives to avoid compression or shear reinforcement
Design of surfaces as deep beams (theory of membranes)
Option to define basic reinforcements for top and bottom reinforcement layers
Definition of designed reinforcement for serviceability limit state design
Result output in points of any selected grid
Optional extension of the module with nonlinear deformation analysis. The calculation is performed in RF‑CONCRETE Deflect by reducing the stiffness according to the standard, or in RF‑CONCRETE NL by the general nonlinear calculation determining the stiffness reduction in an iterative process.
Design with design moments at column edges
Precise breakdown of reasons for failed design
Design details of all design locations for better traceability of reinforcement determination
Export of isolines for the longitudinal reinforcement in a DXF file for further use in CAD programs as a basis for reinforcement drawings

Determination of longitudinal, shear, and torsional reinforcement
Representation of minimum and compression reinforcement
Determination of neutral axis depth, concrete and steel strains
Design of member sections affected by bending about two axes
Design of tapered members
Determination of deformation in state II, for example according to EN 1992-1-1, 7.4.3
Considering tension stiffening
Considering creep and shrinkage
Precise breakdown of reasons for failed design
Design details of all design locations for better traceability of reinforcement determination
Options to optimize cross‑sections
Visualization of concrete section with reinforcement in 3D rendering
Output of complete steel schedule
Fire resistance design according to the simplified method (zone method) according to EN 1992‑1‑2 for rectangular and circular cross‑sections
Optional extension of the RF‑CONCRETE Members add‑on module with a nonlinear calculation of frameworks for the ultimate and serviceability limit states. The extension enables the design of potentially unstable structural components by means of a nonlinear calculation, or a nonlinear deformation analysis of 3D frameworks. Find more information under the product description of the RF-CONCRETE NL add‑on module.