Question:
I am performing a stability analysis of a beam for lateral-torsional buckling. Why is the modified reduction factor χ-LT,mod used in the design according to DIN EN 1993‑1‑1, 6.3.3 Method 2? Is it possible to deactivate this?
Answer:
According to DIN EN 1993‑1‑1, 6.3.2.3 (2), the reduction factor χLT can be modified by the f factor for χ-LT,mod. You can activate or deactivate this option under National Annex Settings.