1. EN 1090‐2: 2018:Execution of steel structures and aluminium structures ‐ Part 2: Technical requirements for steel structures.
2. EN 1993‐1‐1: 2005:Eurocode 3: Design of steel structures ‐ Part 1‐1: General rules and rules for buildings.
3. EN 1990: 2002:Eurocode 0 ‐ Basis of structural design.
4. EN ISO 5817: 2014:Welding ‐ Fusion‐welded joints in steel nickel titanium and their alloys (beam welding excluded) — Quality levels for imperfections.
5. DIN 8563: 1985:Quality assurance of welding operations; fusion welded joints in steel (except beam welded joints); requirements classification.