What is the reason for not getting determined the same maximum internal forces as in the results of the result combination in RF-/STEEL when calculating a result combination?


This behavior is caused by the detail settings in the RF-/STEEL add-on module. The results of result combinations can be used in many different ways.

To use the same maximum internal forces for stress analysis, the settings should be made according to Figure 01.

However, this setting is very conservative because not all maximum internal forces can occur at the same time.


Stress design Stress analysis Result combination Stress Internal force

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RFEM Main Program
RFEM 5.xx

Main Program

Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

Price of First License
3,540.00 USD
RSTAB Main Program
RSTAB 8.xx

Main Program

The structural engineering software for design of frame, beam and truss structures, performing linear and nonlinear calculations of internal forces, deformations, and support reactions

Price of First License
2,550.00 USD
RFEM Steel and Aluminium Structures

Add-on Module

Stress analysis of steel surfaces and members

Price of First License
1,030.00 USD
RSTAB Steel and Aluminium Structures
STEEL 8.xx

Add-on Module

Stress analysis of steel members

Price of First License
760.00 USD