1. prEN 1999-1-1 – Eurocode 9: Design of aluminium structures Part 1-1: General structural rules.
2. prEN 1999-1-4 – Eurocode 9: Design of aluminium structures Part 1-4: Cold-formed structural sheeting.
3. prEN 1999-1-5 – Eurocode 9: Design of aluminium structures Part 1-5: Shell structures.