This European Standard specifies requirements for execution of structural steelwork as structures or as manufactured components, produced from: hot rolled, structural steel products up to and including grade S690; cold formed components and sheeting up to and including grades S700 for stainless steels and including S690 for carbon steels; hot finished and cold formed austenitic, austenitic-ferritic and ferritic stainless steel products; hot finished and cold formed structural hollow sections, including standard range and custom-made rolled products and hollow sections manufactured by welding. This European Standard may also be used for structural steel grades up to and including S960, provided that conditions for execution are verified against reliability criteria and any necessary additional requirements are specified. This European Standard specifies requirements independent of the type and shape of the steel structure (e. g. buildings, bridges, plated or latticed components) including structures subjected to fatigue or seismic actions. The requirements are expressed in terms of execution classes This European Standard applies to structures designed according to the relevant part of EN 1993. This European Standard applies to structural components and sheeting as defined in EN 1993-1-3. This European Standard applies to steel components in composite steel and concrete structures designed according to the relevant part of EN 1994. This European Standard may be used for structures designed according to other design rules provided that conditions for execution comply with them and any necessary additional requirements are specified. This European Standard does not cover requirements for watertightness or air permeability resistance of sheeting. 2