(1) EN 1999-1-3 gives the basis for the design of aluminium alloy structures with respect to the limit state of fracture induced by fatigue. (2) EN 1999-1-3 gives rules for: - Safe life design; - damage tolerant design; - design assisted by testing. (3) EN 1999-1-3 is intended to be used in conjunction with EN 1090-3 “Technical requirements for the execution of aluminium structures” which contains the requirements necessary for the design assumptions to be met during execution of components and structures. (4) EN 1999-1-3 does not cover pressurised containment vessels or pipe-work.