Standards Development

Scope

— This amendment corrects technical and editorial points in EN 1993-1-3:2024.

— Harmonization of interface to EN 1993-1-12 and EN 1090-4,  

— S500M/ML according to EN 10025-4,

— HC460LA and HC500LA according to EN 10268,  

— S550GD according to EN 10346 (with additional requirement “test-based design” adopted from EN 1090-4),

— Corrected footnotes for DX51+D, DX52D, DX53D according to EN 10346,

— Effective width in webs of trapezoidal sheeting – clarification: application of Formula (7.75) is not limited to SLS,  

— Addition of a reference to a publication on the direct strength method (DSM) in two notes plus in the bibliography,

— Revised figures for openings in sheeting (request/proposal from TC135/EN 1090-4),

— Reference thickness in correction of test results – clarification: depends on tolerances, same approach as in design by calculation.  

Purpose

(1) This document provides rules for structural design of cold-formed steel members and sheeting.

(2) This document 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. This document is also applicable to the design of profiled steel sheeting for composite steel and concrete slabs at the construction stage, see EN 1994 (all parts). 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.

NOTE The rules in EN 1993-1-3 complement the rules in the other parts of EN 1993-1.

(3) Methods are also given for stressed-skin design, using steel sheeting as a structural diaphragm.

(4) This document does not apply to cold-formed circular and rectangular structural hollow sections supplied to EN 10219 (all parts), for which reference is made to EN 1993-1-1 and EN 1993-1-8.

(5) This document 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.