DIN EN 1993-1-3:2025-04

DIN EN 1993-1-3 provides rules for structural design of cold-formed steel members and sheeting. DIN EN 1993-1-3 applies to cold-formed steel products made from coated or uncoated hot- or cold-rolled sheet or strip, which have been cold-formed by processes such as roll-forming or press braking. It also covers sheeting and members which are curved during fabrication by continuous bending or roll-forming. Sheeting which has the curvature created by crushing the inner flanges is not included. DIN EN 1993-1-3 is also applicable to the design of profiled steel sheeting for composite steel and concrete slabs at the construction stage, see EN 1994. The execution of steel structures made of cold-formed steel members and sheeting is covered in EN 1090 4. Provisions for bolted connections are provided in EN 1090 2. Methods are also given for stressed-skin design, using steel sheeting as a structural diaphragm. DIN EN 1993-1-3 does not apply to cold-formed circular and rectangular structural hollow sections supplied to EN 10219, for which reference is made to EN 1993-1-1 and EN 1993-1-8. DIN EN 1993-1-3 provides methods for design by calculation and for design assisted by testing. The methods for design by calculation apply only within the stated ranges of material properties and geometric proportions, for which sufficient experience and test evidence is available. These limitations do not apply to design assisted by testing. The responsible German standardization committee is Working Committee NA 005-08-16 AA "Tragwerksbemessung (SpA zu CEN/TC 250/SC 3, ISO/TC 167/SC 1)" ("Design of structures (national mirror committee for TC 250/SC 3, ISO/TC 167/SC 1)") at DIN Standards Committee Building and Civil Engineering