1189x
004955
2021-04-08

Question

How can I perform the stability analysis in RF‑/STEEL EC3 for a flat bar supported on edges, such as 100/5? Although the cross-section is rotated 90° in RFEM/RSTAB, it is displayed as lying flat in RF‑/STEEL EC3.


Answer:

In RF‑/STEEL EC3, the uniaxial bending stress is always related to the local y-axis of a member and the local y‑axis of a member is always assumed as the major axis in the case of symmetric cross-sections; therefore, it is only possible in such a case to change the cross-section description from "100/5" to "5/100"; see the image. Thus, the stability analysis is performed accordingly.