New versions of ConSteel structural analysis software and csJoint connection design software offer several new developments including two World Premiere functions making the structural design even more safe and economic.

For more detailed information about the new features of ConSteel and csJoint 9 please read the What’s new guide.

World Premiere functions

Frame corner wizard

The Frame corner wizard is an optional function for modelling and calculation of the corner regions of structural models more realistically considering the overlapping of connected members. The function is automatically identifies the corner zones and applies special treatment for the geometrical modelling, buckling analysis, plastic analysis and global checks.

Automatic selection of elastic critical factor for buckling check

In structural design it is always a basic problem to perform a realistic and safe stability design. The key questions are:

  • Which are those critical members of the structural model where the stability design is important?
  • Which buckling modes – among all the calculated modes – are the most relevant for these critical members?
  • How to perform complete buckling design efficiently for these members?

In the ‘Buckling sensitivity analysis’ all the critical members are selected and assigned by a most relevant buckling mode in each load combination. In order to fully benefit of this information the elastic critical load factors (cr) corresponding to the relevant buckling modes of each member can be used in the global stability check based on the “General method” of EN 1993-1-1 6.4. in the calculation of the member slenderness value. Choosing the new ‘Automatic (based on sensitivity analysis)’ option on the design settings panel for the elastic critical load factor first the critical members are selected which may have stability problem the rest of the members are checked only for cross-section resistance.

Main new features of ConSteel 9

Structural input

  • Meteorological line load (wind and snow load)
  • Crane and moving load
  • Automatic meteorological load generation for 3D structures (wind and snow load)


  • Plastic hinge analysis
  • Elastic analysis of influence graphs

Standard design

  • New EuroCode national annexes: Greece and Bulgarian


  • Automatic documentation of standard design

Main new features

  • Prestressed bolts can be used in bracing and beam splice plate connections
  • Shear stub can be applied to the base plate connection
  • New type of beam-to-column moment end-plate connection with bolted tension splice*
  • Pad foundation design*

Direct model export to Tekla Structures and StruCad

The smooth and quick transition from the structural model to the detailing model can save significant time and cost, therefore the ConSteel has a high level interface module to Tekla Structures and StruCad.

Besides the export of the global structural model all the joint models appear in ConSteel have the corresponding joint detailing macro, so the designed structural model with the placed joint models can be converted in one piece easily into detailing model without additional drawing efforts on the joints.

Wire frame model export

Wire frame of the ConSteel model can be exported to the following softwares:

  • AutoCAD: Dxf ASCII file (*.dxf)
  • Bocad: sc1 file (*.sc1)
  • StruCAD: snf file (*.snf)

Steel design – EuroCode 3 and ANSI/AISC 360-10

Based on the refined analysis results, the required code checks of the steel members can be conveniently evaluated based on the following standards:

  • European Standard EN 1993-1-1:2005
  • European Standard EN 1993-1-5:2006
  • European Standard EN 1993-1-8:2005
  • American National Standard ANSI/AISC 360-10
  • Spanish Structural Steel Code EAE

The following National Annexes (NA) are available for the European Standard:

  •   EN Recommended Values
  •   EN Austrian NA
  •   EN Bulgarian NA
  •   EN Dutch NA
  •   EN Finnish NA
  •   EN German NA
  •   EN Hungarian NA
  •   EN Polish NA
  •   EN Portuguese NA
  •   EN Singapore NA
  •   EN Swedish NA

ConSteel implemented an Intelligent Design Procedure (IDP) for the most efficient steel structural design. The IDP automatically identifies the proper design situation with all the necessary code check formulas and parameters based on the cross section, member and complete model results and design attributes. After the evaluation a single dominant utilization value at every point of the structural model is selected from all of the combinations and necessary code checks giving a transparent and accurate view about the structural performance.

 Steel design according to EuroCode

Cross section check

Design procedure of ConSteel identifies the design attributes of the cross section (type, shape, loading, and class of the section) and the section components (type, stress distribution, class) and defines the section evaluation accordingly.
Section classification is automatically determined with the consideration of each section components (flange, web etc.). In case of class 4 sections, ConSteel generates the effective section based on the overall normal stress distribution.

Stability design

Stability is one of the most important, but also most complicated, design situation, therefore ConSteel provides a multilevel solution method for the safe and economic results.

General stability method according to the EN 1993-1-1 6.3.4

  • Based on the global buckling analysis overall stability method for the complete or partial model
  • All the possible complex buckling types can be checked
  • Quick and accurate estimates for the buckling sensitive parts of the structure
  • Member level stability check for single or group of members
  • Evaluation of pure and interactive buckling cases
  • Manual or eigenmode analysis-based automatic definition of the design parameters (effective lengths, torsional lengths, moment gradient factors)
  • Intelligent identification of the different design cases considering the loading and the restraints, supports and connecting members along the member length

 Steel design according to AISC

Ultimate limit state design of steel structures can be performed according to the ANSI/AISC 360-10 standard’s LRFD method.

Design procedure of ConSteel identifies the design situation and evaluates the members accordingly.

  • Design of members and sets of members for tension, compression, shear, bending, combined internal forces and torsion
  • Automatic section classification (compact, noncompact and slender)
  • Stability analysis:
    • Buckling: according to the Direct Analysis Method or Effective length method
    • Lateral torsional buckling

Structural joint

In the ConSteel design approach great emphasis is placed on the integrated modeling and calculation of the global structure and its connections therefore a powerful joint analysis engine is developed as a separate module: csJoint.

A great range of different joint types can be created easily applying several special connection elements, the design tools covers practically the whole joint standard Eurocode 3 Part 1-8.

A joint can be defined alone or based on the global model by the automatic joint identification tool.

A prepared joint can be placed several parts of the global model to make the joint integral part of it. A placed joint is always automatically rechecked based on the current analysis results, and the connection stiffness is also updated modifying the global model consequently.

Composite design – EuroCode 4

Composite beam design

ConSteel is capable of single as well as continuous span composite beam design in accordance with EN 1994-1-1:2010 (Eurocode 4). Partial and full shear connection can be also designed.

  • Composite beam definition with profiled sheeting or with solid concrete slab
  • Automatic calculation of effective width
  • Cracked and uncracked analysis
  • Option for moment redistribution
  • Design resistance calculation for bending, shear, bending and shear interaction, shear buckling, shear stud, longitudinal shear, crushing of concrete flange
  • Automatic calculation of the optimal number and layout of shear studs for partial shear (if possible) and also for full shear connection
  • Clear and straightforward results using exactly the same symbols as in EuroCode
  • GSS cross-section model for precise section properties and elastic stresses

Composite column design

All the commonly used composite cross section types can be designed in ConSteel according to Eurocode 4:

Fully encased I section
Partially encased I section
Encased maltese section
Fully encased I section in hollow section
Fully encased I section in circular hollow section


Compression and (biaxial) bending interaction check is performed.