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2023-11-01

Simplified Fire Resistance Design According to EN 1992-1-2 for Columns (Section 5.3.2) and Beams (Section 5.6)

The Concrete Design add-on provides you with the option to perform the simplified fire resistance design according to EN 1992‑1‑2 for columns (Section 5.3.2) and beams (Section 5.6).

The following design checks are available for the simplified fire resistance design:

  • Columns: Minimum cross-sectional dimensions for rectangular and circular sections according to Table 5.2a as well as Equation 5.7 for calculating time of fire exposure
  • Beams: Minimum dimensions and center distances according to Table 5.5 and Table 5.6

You can determine the internal forces for the fire resistance design according to two methods.

  • 1 Here, the internal forces of the accidental design situation are included directly into the design.
  • 2 The internal forces of the design at normal temperature are reduced by the factor Eta,fi (ηfi), then used in the fire resistance design.

Furthermore, it is possible to modify the axis distance according to Eq. 5.5.

Feature 002691 | Simplified Fire Resistance Design for Columns and Beams According to EN 1992-1-2, Sections 5.3.2 and 5.6
Fire Resistance Design Settings
Events
2024-04-30
Online Training | English
EN-GB | Flag Online Training
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Most Frequently Asked Questions Answered by Dlubal Support Team
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Steel Structures in RFEM 6 \n Part 1: Modeling, Load Input
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Steel Structures in RFEM 6 \n Part 2: Combinations, Design, Documentation
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Online Training | English
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Videos
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FAQ 005388
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FAQ | 005279
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FAQ 005279 | Although all the member design checks have been fulfilled, I get the "Not Covered...
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FAQ|005194
EN-US | Flag FAQ
FAQ 005194 | Can the RFEM 6 Concrete Design add-on automatically design member and surface reinfo...
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FAQ|005195
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FAQ | 005155
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FAQ 005155 | Is the deformation analysis in state II included in the concrete design in RFEM 6?
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FAQ | 005154
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FAQ 005154 | How can I open the interaction diagram from Concrete Design?
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Models to Download
Model 004552 | Design Level 1 - Fatigue Design
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Single-Span Beam for Fiber-Reinforced Concrete Design
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Single-Span Beam with Fiber-Reinforced Concrete as Surface Component or Frame Structure
Model 004852 | Pedestrian and Cyclist Bridge in Eichstätt, Germany
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Model 004784 | Triple Pile Cap
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Model 004785 | Foundation Footing
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Knowledge Base Articles
Design Level 1 - Ultimate Configuration
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.
Model of Timber Platform
For the serviceability of a structure, the deformations must not exceed certain limit values. This article describes an example that shows how to analyze the deflection of members using Dlubal's design add-ons.
Steel Fiber-Reinforced Concrete Slab
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.
Spans Based on Figure 5.2 from [1]
In order to correctly design a downstand beam or a T-beam in RFEM 6 using the Concrete Design add-on, it is essential to determine the flange widths for the rib members. This article describes the input options for a two-span beam and the calculation of the flange dimensions according to EN 1992-1-1.
Screenshots
Feature 002691 | Simplified Fire Resistance Design for Columns and Beams According to EN 1992-1-2, Sections 5.3.2 and 5.6
Fire Resistance Design Settings
Design Level 2 – Design Setting
Design Level 2 – Design Setting
Design Level 1 – Design Setting
Design Level 1 – Design Setting
Model 004552 | Design Level 1 - Fatigue Design
Model 004552 | Design Level 1 - Fatigue Design
Design Level 1 - Ultimate Configuration
Design Level 1 - Ultimate Configuration
Design Level 2 - Ultimate Configuration
Design Level 2 - Ultimate Configuration
Number of Cycles
Number of Cycles
Correction Factor λs
Correction Factor λs
Feature 002671 | Seismic Design of Reinforced Concrete Members According to EC 8
Result Filter for Seismic Design of Reinforced Concrete Members in RFEM
Product Features
Feature 002691 | Simplified Fire Resistance Design for Columns and Beams According to EN 1992-1-2, Sections 5.3.2 and 5.6

The Concrete Design add-on provides you with the option to perform the simplified fire resistance design according to EN 1992‑1‑2 for columns (Section 5.3.2) and beams (Section 5.6).

The following design checks are available for the simplified fire resistance design:

  • Columns: Minimum cross-sectional dimensions for rectangular and circular sections according to Table 5.2a as well as Equation 5.7 for calculating time of fire exposure
  • Beams: Minimum dimensions and center distances according to Table 5.5 and Table 5.6

You can determine the internal forces for the fire resistance design according to two methods.

  • 1 Here, the internal forces of the accidental design situation are included directly into the design.
  • 2 The internal forces of the design at normal temperature are reduced by the factor Eta,fi (ηfi), then used in the fire resistance design.

Furthermore, it is possible to modify the axis distance according to Eq. 5.5.

Feature 002670 | Fatigue Design According to EN 1992-1-1, Chapter 6.8

With the Concrete Design add-on, you can perform the fatigue design of members and surfaces according to EN 1992‑1‑1, Chapter 6.8.

For the fatigue design, you can optionally select two methods or design levels in the design configurations:

  • Design Level 1: Simplified design according to 6.8.6 and 6.8.7(2): The simplified design is performed for frequent action combinations according to EN 1992‑1‑1, Chapter 6.8.6 (2), and EN 1990, Eq. (6.15b) with the traffic loads relevant in the serviceability state. A maximum stress range according to 6.8.6 is designed for the reinforcing steel. The concrete compressive stress is determined by means of the upper and lower allowable stress according to 6.8.7(2).
  • Design Level 2: Design of damage equivalent stress acc. to 6.8.5 and 6.8.7(1) (simplified fatigue design): The design using damage equivalent stress ranges is performed for the fatigue combination according to EN 1992‑1‑1, Chapter 6.8.3, Eq. (6.69) with the specifically defined cyclic action Qfat.
Feature 002671 | Seismic Design of Reinforced Concrete Members According to EC 8

The Concrete Design add-on allows you to perform the seismic design of reinforced concrete members according to EC 8. This includes, among other things, the following functionalities:

  • Seismic design configurations
  • Differentiation of the ductility classes DCL, DCM, DCH
  • Option to transfer the behavior factor from a dynamic analysis
  • Check of the limit value for the behavior factor
  • Capacity design checks of "Strong column - weak beam"
  • Detailing and particular rules for curvature ductility factor
  • Detailing and particular rules for local ductility
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.

Frequently Asked Questions (FAQ)
How can I use graphic templates for multi printing of a reinforcement?
How can I activate the design with steel fiber-reinforced concrete in the "Concrete Design" add-on for RFEM 6?
Although all the member design checks have been fulfilled, I get the "Not Covered Reinforcement" result. What is the reason?
Can the RFEM 6 Concrete Design add-on automatically design member and surface reinforcement?
Can I define a different bar size in the RFEM 6 Concrete Design add-on other than the default bar sizes available in the drop-down? 
Is the deformation analysis in state II included in the concrete design in RFEM 6?
Customer Projects
Exterior View of Pastry Production and Storage Unit | © GH HERVOUET
Creation of a production and storage facility for pastries in Montbert, France
Pedestrian and Cyclist Bridge "Herzogsteg" in Eichstätt, Germany | © Bruno Klomfar
Pedestrian and Cyclist Bridge "Herzogsteg" in Eichstätt, Germany
Front View of Office Building with V-Shaped Steel Composite Columns | © Die Tragwerker GmbH
Office Building with Integrated Visitor Center and Parking Garage in Geiselbulach, Germany
Office Building of Stadtwerke Kirchheim unter Teck, Germany (Rendering) | © MEDIA 4D GmbH
Office Building of Stadtwerke Kirchheim unter Teck, Germany
Reinforced Concrete Elevator Shaft at Montluçon Station, France (© E.T.L Structures)
Reinforced Concrete Elevator Shaft at Montluçon Station, France
Quai M, the New Concert Hall in La Roche-sur-Yon, France (© LCA Construction Bois)
New Concert Hall in La Roche-sur-Yon, France
Residential Buildings in Trieste, Italy
Residential Buildings in Trieste, Italy
Deformations of Airedale Swing Bridge in RFEM
Airedale Swing Bridge in Rodley, United Kingdom
Deformations in RFEM | © Baumruck + Oswald
AQUAtherm Indoor/Outdoor Swimming Pool in Straubing, Germany
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