Various Open and Closed Thin-Walled and Massive Sections

  • RSECTION for Various Cross-Sections

Section Properties and Stress Analysis



  • Possibility of the connection to the internationally recognized programs RFEM and RSTAB
  • Fast modeling thanks to sophisticated input technology
  • Calculation of stresses from axial force, biaxial bending moments and shear forces, primary and secondary torsional moment, and warping bimoment for any cross-section shape.
  • Powerful scripting language (JavaScript) for creating topology, load cases, and internal forces
  • Parametric modeling
  • Import of dxf files

Customer Projects

Customer Projects Designed with Dlubal Products

Fascinating customer projects designed with the Dlubal structural analysis software.

The stand-alone program RSECTION determines the section properties for any thin-walled and massive cross-sections and performs a stress analysis.

RSECTION can be connected to the FEA software RFEM and the structural frame analysis software RSTAB. Sections from RSECTION are also available in the RFEM and RSTAB library. Conversely, internal forces from RFEM and RSTAB can be imported into RSECTION.

You can enter the data graphically, in tables, by importing a DXF file, or via script.



  • Extensive library of rolled, parametric thin-walled and thick-walled cross-sections
  • Extensible library for material properties
  • Import of dxf files
  • Cross-section properties of thin-walled or thick-walled cross-sections
  • Ideal section properties of cross-sections consisting of different materials
  • Stress analysis
  • Saving cross-sections as a block
  • Scripting with JavaScript
  • Interface with MS Excel for exporting tables
  • Connection to Webservice & API (for example, optional creation of cross-section and access to result tables)
  • Printout report


RSECTION contains an extensive library of rolled sections, as well as parametric thin-walled and massive cross-sections. They can be composed or supplemented by new elements.

Graphical tools and functions allow for modeling complex section shapes in the usual way common for CAD programs. The graphical input supports, among other things, the setting of arcs, circles, ellipses, parabolas, and NURBS. As an alternative, it is possible to import a DXF file that is used as the basis for further modeling. It is possible to model a cross-section consisting of different materials.

Furthermore, a parameterized input allows you to enter the cross-section dimensions and internal forces in such a way that they depend on certain variables.

All inputs can also be done by means of scripts.



RSECTION calculates all relevant cross‑section properties including the plastic limit internal forces. For sections consisting of different materials, RSECTION determines the ideal cross-section properties.

The stresses from axial force, biaxial bending moments and shear forces, primary and secondary torsional moment, as well as warping bimoment, can be calculated for any cross-section shape. You can determine the equivalent stresses according to the stress hypothesis by von Mises, Tresca, and Rankine.



All results can be evaluated and visualized in an appealing numerical and graphical form. Selection functions facilitate the targeted evaluation.

The printout report corresponds to the high standards of the FEA software RFEM and the frame analysis software RSTAB. Modifications are updated automatically.




1,850.00 EUR

The prices apply to the use of the software in all countries.

RF-/STEEL Cold-Formed Sections Module Extension | Design of Cold-Formed Sections According to EN 1993-1-3

Effective Sections for RSECTION 1

Additional Analysis

Effective Sections is an extension of RSECTION. It determines the effective sections according to EN 1993-1-5, EN 1993-1-3 and EN 1999-1-1.

Price of First License
1,250.00 EUR