Other Add-on Modules

RF-/DEFORM Add-on Module for RFEM/RSTAB

The RF-/DEFORM add‑on module performs the deformation analysis of individual members or entire sets of members.

Allowable limit deformations can individually consider an undeformed structure or displaced member ends.


The RF-MOVE/RSMOVE add‑on module creates load cases on members or sets of members on the basis of various positions of moving loads (such as travelling cranes, cranes, vehicles, and others).

It is also possible to create an enveloping result combination when generating loads.

RF-MOVE Surfaces Add-on Module for RFEM

The RF-MOVE Surfaces add‑on module for RFEM creates load cases on the basis of various positions of moving loads such as vehicles on bridges.

In addition, it is possible to create an enveloping result combination.


The RF-IMP/RSIMP add‑on module performs automatic generation of imperfections for geometrically nonlinear calculations.

Thus, it is possible to perform the ultimate limit state design including stability in the course of the second‑order or the large deformation analysis.

RF-STABILITY Add-on Module for RFEM

The RF-STABILITY add-on module analyzes the stability of structures.

The RFEM add-on module determines critical load factors and the corresponding stability modes.

RSBUCK Add-on Module for RSTAB

The RSBUCK add‑on module for RSTAB analyzes the stability of the structure according to the Eigenvalue Method.

RF-SOILIN Add-on Module for RFEM

The RF-SOILIN add‑on module determines the elastic foundation by means of soil layers.

Designs are performed according to EN 1997‑1:2004, DIN 4019‑1:1979‑04,or CSN 73 1001.

RF-INFLUENCE Add-on Module for RFEM

The RF-INFLUENCE add‑on module creates influence lines and surfaces as due to a constant internal force such as axial force, shear force, or bending moment.

Influence lines and surfaces express graphically how a unit load affects the internal reactions on any load position of the model.

RF-MAT NL Add-on Module for RFEM

The RF-MAT NL add‑on module allows for consideration of nonlinear material behavior in RFEM (for example isotropic plastic, orthotropic plastic, masonry, and others).

RF-/STAGES Add-on Module for RFEM/RSTAB

The RF-/STAGES add‑on module performs structural design considering the construction stage during the building phase.

Negligence of the construction stage influence may cause errors in the calculation of entire models. RF‑/STAGES analyzes these influences and considers them to the point of the structural design.

RF-LAMINATE Add-on Module for RFEM

The RF-LAMINATE add‑on module performs deflection analysis and stress designs of laminate surfaces considering shear coupling (cross‑laminated timber elements, glass fiber reinforced plastic, carbon, and others).

RF-LOAD-HISTORY Add-on Module for RFEM

The RF-LOAD-HISTORY add‑on module considers the permanent (plastic) deformation of previous load states.

The calculation is performed for structural models consisting of surfaces or solids.

RF-COM/RS-COM Add-on Module for RFEM/RSTAB

The RF-COM/RS-COM add‑on module is a programmable interface (API) based on the COM technology.

This interface allows you to customize the main programs RFEM and RSTAB to meet your individual needs and to add customized input macros or post-processing programs.

RF-LINK Add-on Module for RFEM

The RF-LINK add‑on module extends a range of data format for import to RFEM. The following additional interfaces are available:

  • Standard Acis Text Format (*.sat)
  • Initial Graphics Exchange Specification (*.igs, *.iges)
  • Standard for the Exchange of Product Model Data (*. stp, *.step)

SUPER-RC Add-on Module for RSTAB

The SUPER-RC add‑on module allows the determination of construction phases with varying structural and loading conditions.

For this purpose, an envelope of all extreme values is created in the module.

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