Answer:
For general cross-sections, including the SHAPE‑THIN cross-sections, you can only perform the elastic design in RF‑/STEEL EC3: The plastic interactions are only applicable to a few cross-section shapes.
Plastic Design of SHAPE-THIN Cross-Sections in RF-/STEEL EC3
I have imported a SHAPE‑THIN cross-section and calculated it using STEEL EC3. Why is the cross-section not designed plastically?
;