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Updated:
01/31/2012

Cross-References

Related programs
 
RF-CONCRETE
 RFEM add-on module for reinforced concrete design of members and surfaces
RF-CONCRETE NL
 RFEM add-on module for non-linear reinforced concrete design for serviceability limit state
RF-CONCRETE 2D
 RFEM add-on module for reinforced concrete design of members and surfaces (plates and walls) in 2D
RF-PUNCH
 RFEM add-on module for punching shear design of plates and foundations supported by columns
 
EC2 for RFEM
 Advanced setting for RFEM add-on modules RF-CONCRETE, RF-CONCRETE 2D, RF-CONCRETE Columns and RF-PUNCH for design acc. to EC 2
ACI 318-11 for RFEM
 Advanced setting for RFEM add-on module RF-CONCRETE Members for reinforced concrete design acc. to ACI 318-11
 
Products - Overview

RF-CONCRETE Columns 4.xx

Reinforced Concrete Design According to the Model Column Method (Method Based on Nominal Curvature) 
The add-on module RF-CONCRETE Columns is a powerful software tool of the RFEM program family used to design reinforced concrete. Take advantage of RF-CONCRETE Columns to perform the ultimate limit state design for rectangular or circular compression elements according to the model column method (method based on nominal curvature)
  •  DIN 1045-1:2001-07
  •  DIN 1045-1:2008-08
  • DIN V ENV 1992-1-1:1992
  •  EN 1992-1-1:2004 + AC:2010 (optionally available, see EC2 for RFEM).

The fire protection design is carried out according to
  • DIN 4102-04:2004 or DIN 4102-22:2004
  • EN 1992-1-2:2004.

The standards specify that, when determining the internal forces for structural components subjected to compression, you have to take into account the deformations (second-order analysis), if the linear-elastically determined internal forces are increased by more than 10 % due to deformation.

To avoid a non-linear calculation that can be checked only with difficulty, it is possible to determine the internal forces affected by deformation in a simplified way using a "model column". In accordance with your user-defined specifications, the program transfers the selected members into model columns.
Features

  • Full integration in RFEM with import of geometry and load case data
  • Automatic selection of members for design according to specified criteria (for example only vertical members)
  • Optionally available: Design of compression elements made of reinforced concrete according to the method based on nominal curvature in accordance with EN 1992-1-1:2004 (Eurocode 2) as well as for the following national application documents (NAD) (see also EC2 for RFEM).

    •  SIST EN 1992-1-1:2005/A101:2006 (Slovenia)
    •  ÖNORM B 1992-1-1/NA:2007-04 (Austria)
    •  DIN EN 1992-1-1/NA:2011-01 (Germany)
    •  NEN EN 1992-1-1/NA:2007-04 (Netherlands)
    •  CSN EN 1992-1-1/NA:2006-11 (Czech Republic)
    •  UNE EN 1992-1-1/NA:2010-11 (Spain)
    •  EN 1992-1-1 DK NA:2007-11 (Denmark)
    •  NF EN 1992-1-1/NA:2007-03 (France)
    •  STN EN 1992-1-1/NA:2008-06 (Slovakia)
    •  SFS EN 1992-1-1/NA:2007-10 (Finland)
    •  NA to BS EN 1992-1-1:2004 (United Kingdom)
    •  SS EN 1992-1-1/NA:2008-06 (Singapore)
    •  NP EN 1992-1-1/NA:2010-02 (Portugal)
    •  UNI EN 1992-1-1/NA:2007-07 (Italy)
    •  SS EN 1992-1-1/NA:2008 (Sweden)
    •  PN EN 1992-1-1/NA:2008-04 (Poland)

        In addition to the NADs listed above, you can define
        application documents by yourself, applying user-
        defined limit values and parameters.

  • Optional consideration of creeping
  • Diagram based determination of buckling lengths and slenderness from the restraint ratios of columns
  • Automatic determination of ordinary and unintentional as well as additionally available eccentricity according to second-order analysis
  • Design of monolithic constructions and precast parts
  • Analysis concerning a standard reinforced concrete design
  • Determination of internal forces according to the linear static and the second-order analysis
  • Analysis of decisive design locations along the column due to existing load
  • Output of required longitudinal and link reinforcement
  • Output of design safety
  • Fire resistance design with optional design of longitudinal reinforcement according to DIN 4102-22:2004 or DIN 4102-4:2004, table 31
  • Fire protection design according to the simplified method (zone method) in accordance with EN 1992-1-2. The fire resistance design of brackets will be possible (in preparation).
  • Reinforcement concept with graphic display in 3D rendering for longitudinal and link reinforcement
  • Summary of design ratios with option to access all design details
  • Graphical representation of important design details in RFEM work window
Currently available standards and NADs
 
Input

The members/sets of members that you want to design are transferred automatically from RFEM to the add-on module. You can also use the filter function (for example to select only vertical members made of concrete) to select the corresponding elements automatically or to define them manually. Then you can assign load cases, load groups and load combinations resulting in the linear-elastically determined internal forces on the selected members. When you want to take into account creeping, you have to define the creep-producing load additionally.

The RFEM materials are preset but can be adjusted in the add-on module. The material properties of the relevant standard are stored in the library.

The column's constructional properties as well as the specifications for determining the required longitudinal and shear reinforcement can easily be defined.
The effective length coefficient ß can be defined manually, determined automatically by the module or imported from the add-on module RF-STABILITY .

Optionally, you can perform the fire protection design according to DIN 4102, part 4, together with the specifications mentioned in DIN 4102-22. The design is carried out successfully when the design ratio a1 is less than 1.0 and the column's minimum dimension as well as the concrete cover's minimum spacing are met. For the fire resistance design according to EN 1992-1-2, you can enter detailed specifications, for example the definition of the cross-section sides where charring occurs (in preparation).
Definition of column parameters
 
Design

For the design concerning safety against bending failure, RF-CONCRETE Columns analyzes decisive locations on the column for axial force and moments. For the design shear resistance, the program takes into account additionally the locations with the shear forces' extreme values.
While calculating, the module decides if a standard design is sufficient or if the column with its moments must be designed according to the second-order analysis. The moments are determined from the previously entered specifications.

The calculation is divided in four parts:
  • Load independent calculation steps
  • Iterative determination of governing loading taking into account a varying required reinforcement
  • Determination of provided reinforcement for the governing internal forces
  • Safety determination for all design internal forces taking into account the provided reinforcement
In this way, RF-CONCRETE Columns provides an appropriate solution, consisting of an optimized reinforcement proposal and the loading resulting from it.
Calculation process
 
Results

When the design has been carried out successfully, RF-CONCRETE Columns displays the results clearly arranged in tables. Each intermediate value is listed, thus the design becomes transparent. The results are arranged according to load cases, cross-sections, members and sets of members.

The reinforcement proposal for the longitudinal and the shear reinforcement is created by taking into account all constructional specifications. The reinforcement is represented by a drawing in 3D including dimensions. This reinforcement proposal can be modified according to your individual needs. A three-dimensional graphic shows the exact distribution of strain and stress across the cross-section.

If one of the fire protection designs according to DIN 4102 is not fulfilled, RF-CONCRETE Columns increases the required reinforcement until either all designs are carried out successfully or no reinforcement layout can be found.

The columns together with their reinforcement can be visualized in the 3D rendering as well as in the RFEM work window. In addition to the input and results data including design details displayed in tables, you can integrate all graphics into the printout report. In this way, a comprehensible and clearly arranged documentation is guaranteed.
RF-RF-CONCRETE Columns results
 
Table 2.1 Proof Members Edit Longitudinal Reinforcement Table 4.2 Shear Reinforcement Provided Graphical results representation

Table 2.1 Proof Members

Edit Longitudinal Reinforcement

Table 4.2 Shear Reinforcement Provided

Graphical results representation
Results in Printout Report

Results in Printout Report

Note

You can find more information about RF-CONCRETE Columns here:

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Download the free demo version of RFEM and its add-on modules.

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Get the detailed product brochure available for download. On request, we send you the brochure including a demo DVD directly by mail.

Price Information

Net prices in €
1st license
RF-CONCRETE Columns 1,150.00
Additional license
RF-CONCRETE Columns 517.50
> Pricelist
Table 1.1 General Data
Table 1.1 General Data
Table 1.2 Materials
Table 1.2 Materials
Table 1.4 Specifications for Longitudinal Reinforcement
Table 1.4 Specifications for Longitudinal Reinforcement
Table 1.4 Specifications for Link Reinforcement
Table 1.4 Specifications for Link Reinforcement
Table 1.4 Structural Reinforcement
Table 1.4 Structural Reinforcement
Table 1.4 Reinforcement Layout
Table 1.4 Reinforcement Layout
Table 1.4 Standard Specifications
Table 1.4 Standard Specifications
Table 1.5 Columns - Members
Table 1.5 Columns - Members
Strains and Stresses of Cross-section
Strains and Stresses of Cross-section
Table 3.1 Required Reinforcement by Cross-section
Table 3.1 Required Reinforcement by Cross-section
Table 3.2 Required Reinforcement by Member
Table 3.2 Required Reinforcement by Member
Table 4.1 Longitudinal Reinforcement
Table 4.1 Longitudinal Reinforcement
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