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Updated:
05/24/2013

Cross-References

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Products - Overview

RF-STEEL EC3 5.xx

Steel Design of Members and Sets of Members According to EC 3 
The European standard Eurocode 3 specifies the design, analysis and construction of steel structures in all member states of the European Union. Country-specific regulations are taken into account by national annexes (NA). Take advantage of RF-STEEL EC3 that has already implemented those national documents. In addition, you can define your own national parameters or create new national annexes.

RF-STEEL EC3 performs all typical ultimate limit state designs, stability and deformation analyses as well as fire protection designs for structural steel according to 
  •  EN 1993-1-1:2005 + AC:2009,
  •  EN 1993-1-2:2006 + AC:2005 (fire protection design),
  •  EN 1993-1-4:2006 (stainless steel),
  •  EN 1993-1-5:2006.

Separate design cases allow for a flexible analysis of several structural components in complex structures. The results are displayed in clearly arranged tables.

Features



  • Import of materials, cross-sections and internal forces from RFEM
  • Steel design of all thin-walled cross-sections
  • Automatic classification of cross-sections according to EN 1993-1-1:2005 + AC:2009, section 5.5.2, and EN 1993-1-5:2006, section 4.4 (cross-section class 4) with option to determine effective widths according to Annex E for stresses under fy
  • Integration of parameters from national annexes for the following countries:
    •  DIN EN 1993-1-1/NA:2010-12 (Germany) 
    •  NA to BS EN 1993-1-1:2005 (United Kingdom)
    •  CSN EN 1993-1-1/NA.ed: 2007-05 (Czech Republic)
    •  DK EN 1993-1-1/NA:2007-11 (Denmark)
    •  UNE EN 1993-1-1/NA:2010-11 (Spain)
    •  NEN EN 1993-1-1/NA:2011 (Netherlands)
    •  NF EN 1993-1-1/NA:2007-05 (France)
    •  ÖNORM 1993-1-1:2007-02 (Austria)
    •  PN-EN 1993-1-1:2006 (Poland)
    •  NP EN 1993-1-1/NA:2010-03 (Portugal) 
    •  SFS-EN 1993-1-1:2005 (Finland)
    •  SIST-EN 1993-1-1/NA:2006-03 (Slovenia) 
    •  SS-EN 1993-1-1:2005/AC:2009 (Sweden)
    •  STN EN 1993-1-1/NA:2007-12 (Slovakia) 
    •  UNI EN 1993-1-1/NA:2008 (Italy)
    •  BLG EN 1993-1-1/NA:2008 (Bulgaria)
    •  NA to CYS EN 1993-1-1:2005 (Cyprus)
    •  LST EN 1993-1-1/NA:2005/AC:2006 (Lithuania)
    •  SR EN 1993-1-1:2006/NA:2008-04 (Romania)
    •  SS EN 1993-1-1 (Singapore)
    •  NBN EN 1993-1-1/NA:2010-12 (Belgium)
  • Automatic calculation of all required factors for the design value of the flexural buckling resistance Nb,Rd
  • Automatic determination of the ideal elastic critical moment Mcr for each member or set of members on every x-location according to eigenvalue method or by comparing moment diagrams. You only have to define the lateral intermediate supports.
  • Design of tapered members, unsymmetric sections or sets of members according to general method as described in EN 1993-1-1, 6.3.4
  • When the general method according to 6.3.4 is applied, application of 'European lateral-torsional buckling curve' according to Naumes,  Strohmann, Ungermann, Sedlacek (Stahlbau 77 (2008), page 748-761) is optionally available.
  • Optional design for double bending according to extended method of Naumes/Feldmann/Sedlacek
  • Rotational restraints can be taken into account (for example from trapezoidal sheets and purlins).
  • ULS design: Option to select between fundamental and accidental design situations for each load case, group or combination
  • SLS design: Option to select characteristic, frequent or quasi-permanent design situations for each load case, group or combination
  • Tension analysis with definable net cross-section areas for member start and member end is possible
  • Optional calculation of warp spring for nodal support on sets of members
  • Graphic of design ratios on cross-section and in RFEM model
  • Determination of governing internal forces
  • Filter options for graphical results in RFEM
  • Graphic display of design ratios in the rendered view
  • Color scales in results tables
  • Connection between tables and RFEM work window when selecting the current member graphically
  • View mode for modifying the view in the work window
  • Automatic cross-section optimization
  • Transfer of optimized cross-sections to RFEM
  • Parts list and quantity surveying
  • Direct data export to MS Excel or OpenOffice.org Calc
  • Printout report prepared for test engineer
    • Temperature curve can be taken to report
    		  

    Input 


    RF-STEEL EC3 imports the cross-sections defined in RFEM automatically. All thin-walled cross-sections can be designed. The program decides which design method, conforming to standards, is the most efficient. 

    Furthermore, RF-STEEL EC3 can take into account several actions for the ultimate limit state design. You can choose between the interaction formulae mentioned in the standard. 

    In accordance with Eurocode 3, the program divides the cross-sections that you want to design into the classes 1 to 4. In this way, the module can determine the limitation of the design capacity and of the rotational capacity due to local buckling for cross-section parts. Furthermore, RF-STEEL EC3 determines the (c/t) ratio of the cross-section elements subjected to compression. It also classifies the cross-sections completely automatically. 

    For stability analyses you can decide for each member or set of members whether flexural buckling occurs in direction y and/or z. Furthermore, you can define additional lateral supports. RF-STEEL EC3 determines the slenderness and the elastic critical buckling load automatically by considering the boundary conditions. For the lateral torsional buckling design the program defines also the required ideal elastic critical moment automatically, but it is also possible to define it manually. Even the load application point of transverse loads which is affecting the torsional resistance can be taken into account by detailed settings. Moreover, you can take account of rotational restraints (for example from trapezoidal sheets and purlins).

    In modern construction using cross-sections that become more and more slender, the serviceability limit state represents an important factor in structural calculations. Take advantage of RF-STEEL EC3 to assign load cases, groups and combinations individually to different design situations. The corresponding limit values are predefined in the national annex but can always be modified. The module allows you to define reference lengths and precambers and to consider them for the design.
    Selection of cross-sections for design
    		 

    Design 


    When you design loadings due to tension, compression, bending and shear, RF-STEEL EC3 compares the design values of the maximum load capacity with the design values of the actions. In case structural components are subjected to both bending and compression, the program performs an interaction. Concerning the interaction formula, you can decide whether you want to determine the factors according to the first method (annex A) or the second (annex B). 

    For the flexural buckling design, however, neither the slenderness nor the elastic critical buckling load of the governing buckling case must be entered. The module calculates all required factors for the design value of the bending load automatically. The ideal elastic critical moment is determined by the program itself, for each member on every x-location of the cross-section. You only need to specify lateral intermediate supports, if required, for the individual members/sets of members that can be defined in one of the input tables.

    If members are selected for the fire protection design, an extra input table is presented in which you can define additional parameters such as types of coating or covers. As global settings, the required time of fire resistance, the temperature curve and further coefficients can be selected. The printout report lists all intermediate results and the final proof of the fire protection design.
    Calculation
    		 

    Results 


    The results are displayed in clearly arranged output tables, sorted by load cases, cross-sections, members, sets of members or x-locations. To get detailed information about the performed design, select the corresponding table row. 

    All material and cross-section properties, design internal forces and design factors are clearly represented in the results tables. Furthermore, it is possible to display the distribution of internal forces for each x-location in a separate graphic window. 

    To complete the output, RF-STEEL EC3 shows the parts lists by member/by set of members for the individual cross-section types. Finally, you can print the input and results data into the global RFEM printout report. 

    To use the results in further processing programs, it is possible to export all tables to MS Excel or OpenOffice.org Calc.
    Graphical results evaluation
    		 

    Note

    You can find more information about RF-STEEL EC3 here:

    > Manual
    > Hotline
    > Training


    Download a help file and an example macro for
    connecting to RF-COM.

    Help file RF-STEEL EC3 

    Download free trial versions of our programs.

    Download trial version 
    Request for detailed product brochure and trial versions of our products.

    Request information

    Price Information

    Net prices in USD
    For use in United States
    First License
    RF-STEEL EC3 1,702.02
    Next License
    RF-STEEL EC3 765.91
    > Webshop
    1.1 General Data - Ultimate Limit State
    1.1 General Data - Ultimate Limit State
    1.1 General Data - Serviceability Limit State
    1.1 General Data - Serviceability Limit State
    1.2 Materials
    1.2 Materials
    1.3 Cross-sections
    1.3 Cross-sections
    1.4 Lateral Intermediate Supports
    1.4 Lateral Intermediate Supports
    1.5 Effective Lengths
    1.5 Effective Lengths
    1.7 Nodal Supports
    1.7 Nodal Supports
    1.8 Member End Releases
    1.8 Member End Releases
    1.9 Serviceability Data
    1.9 Serviceability Data
    Design - Cross-section optimization
    Design - Cross-section optimization
    2.2 Design by Cross-section
    2.2 Design by Cross-section
    2.5 Design by x-Location
    2.5 Design by x-Location
    3.1 Governing Internal Forces
    3.1 Governing Internal Forces
    4.1 Parts List by Member
    4.1 Parts List by Member
    Details - Ultimate Limit State
    Details - Ultimate Limit State
    Details - Stability
    Details - Stability
    Details - Serviceability
    Details - Serviceability
    Details - Fire Protection
    Details - Fire Protection
    Details - Other settings
    Details - Other settings
    National Annex Settings - Base
    National Annex Settings - Base
    National Annex Settings - Stainless Steel
    National Annex Settings - Stainless Steel
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