When running the design checks of steel members with cold-formed sections according to NTC 2018, I get the ER1500.00 error: "Section shape not valid for design". Why do I get this error and how can I solve it?

Question

Accepted Answer

The error message appears, because you are trying to design cold-formed structural elements with the NTC 2018, for which the same NTC 2018, in paragraph 4.2.4.1.1, refers to the Eurocode UNI EN 1993-3. To view the manufacturing type of a section, double-click the cross-section name in the Navigator – Data.To set the design according to Eurocode UNI EN 1993-1-3, click on Edit Model – Base Data and select EN 1993 for the Steel Design add-on (with the corresponding Italian National Annex UNI) in the Standards I tab.

Design of Steel Members with Cold-Formed Sections

When running the design checks of steel members with cold-formed sections according to NTC 2018, I get the ER1500.00 error: "Section shape not valid for design". Why do I get this error and how can I solve it?