- NBR 8681 (loads)
- ABNT NBR 8800 (steel structures)
- NBR 7190 (timber structures)
Brazilian Standards (NBR)
NBR Standards
Implemented Brazilian Standards
Automatic Generation of Combinations in RFEM and RSTAB
In RFEM 6 / RSTAB 9, the load and result combinations are automatically created according to the Brazilian standard NBR 8681.
Steel Design According to ABNT NBR 8800
The RF‑/STEEL NBR add-on module for RFEM 5 / RSTAB 8 performs the ultimate and serviceability limit state design of members according to the Brazilian standard ABNT NBR 8800:2008.
Timber Design According to NBR 7190
The RF‑/TIMBER NBR add-on module for RFEM 5 / RSTAB 8 performs the ultimate and serviceability limit state design according to the Brazilian standard for timber structures NBR 7190.
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Frequently Asked Questions (FAQ)
Entering Intermediate Lateral Restraints for Lateral Support of Members and Sets of Members
The support conditions of a beam subjected to bending are essential for its resistance to lateral-torsional buckling.

The cross-section resistance design analyzes tension and compression along the grain, bending, bending and tension/compression as well as the strength in shear due to shear force.
The design of structural components at risk of buckling or lateral-torsional buckling is performed according to the Equivalent Member Method and considers the systematic axial compression, bending with and without compression force as well as bending and tension. Deflection of inner spans and cantilevers is compared to the maximum allowable deflection.
Separate design cases allow for a flexible and stability analysis of members, sets of members, and loads.
Design-relevant parameters such as the stability analysis type, member slendernesses, and limit deflections can be freely adjusted.
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