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1.1.2 Scope of EN 1999-1-4 (1)P EN 1999-1-4 gives design requirements for cold-formed trapezoidal aluminium sheeting. It applies to cold-formed aluminium products made from hot rolled or cold rolled sheet or strip that have been cold-formed by such processes as cold-rolled forming or press-breaking. The execution of aluminium structures made of cold-formed sheeting is covered in EN 1090-3. NOTE The rules in this part complement the rules in other parts of EN 1999-1. (2) Methods are also given for stressed-skin design using aluminium sheeting as a structural diaphragm. (3) This part does not apply to cold-formed aluminium profiles like C-, Z- etc profiles nor cold-formed and welded circular or rectangular hollow sections. (4) EN 1999-1-4 gives methods for design by calculation and for design assisted by testing. The methods for the design by calculation apply only within stated ranges of material properties and geometrical properties for which sufficient experience and test evidence is available. These limitations do not apply to design by testing. (5) EN 1999-1-4 does not cover load arrangement for loads during execution and maintenance.