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2021-04-30

Design of Asymmetric Cross-Section

I design an asymmetric cross-section and get the message: "Non-designable: ER051) Moment about z‑axis on asymmetric cross-section, taper or set of members." Why?

Answer:

The reason for this warning is that asymmetric cross-sections cannot be designed using the methods mentioned in 6.3.3 of EN 1993‑1‑1 or the General Method according to 6.3.4 of EN 1993‑1‑1.

Performing Stability Analysis According to Second-Order Analysis as Cross-Section Check with STEEL Warping Torsion
Performing Stability Analysis According to Second-Order Analysis as Cross-Section Check with STEEL Warping Torsion

You can perform the stability analysis as a cross-section design according to the second-order analysis, which is possible using the add‑on modules FE‑LTB or STEEL Warping Torsion.

Note for Design of Asymmetric Cross-Section
Note for Design of Asymmetric Cross-Section
Note for Design of Asymmetric Cross-Section
Note for Design of Asymmetric Cross-Section
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