BS EN 1090-4:2018 pdf download

BS EN 1090-4:2018 pdf download.Execution of steel structures and aluminium structures
1 Scope
This European Standard specifies requirements for the execution, i.e. the manufacture and the installation, of cold-formed structural steel members and sheeting and cold-formed structures for roof, ceiling, floor, wall and cladding applications. This European Standard applies to structures designed according to the EN 1993 series. This European Standard applies to structural members and sheeting to be designed according to EN 1993-1-3. 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 also specifies requirements for the execution i.e. the manufacture and the installation of structures made from cold formed profiled sheeting for roof, ceiling, floor and wall applications under predominately static loading or seismic loading conditions and their documentation. This European Standard covers sheeting of structural classes I and II according to EN 1993-1-3 used in structures. This European Standard covers structural members of all structural classes according to EN 1993-1-3. Structural sheeting are understood here to be: -profiled sheet, such as trapezoidal, sinusoidal or liner trays (Figure 1), or Structural members are understood here to be: members linear profiled cross sections) that are produced by cold forming (Figure 2). This European Standard also covers: not welded built-up sections (Figure 2b and 2c);
4 Specifications and documentation
4.1 Execution Specification
4.1.1 General
The necessary information and technical requirements for execution of each part of the works shall be agreed and complete before commencement of execution of that part of the works. There shall be procedures for making alterations to previously agreed execution specification. Execution specification consists of layout drawings and details, based on structural design and shall consider such of the following items as relevant: a) additional information, as listed in Annex F; b] execution classes, see 4.1.2; c) technical requirements regarding the safety of the works, see 4.2.3 and 9.7; d) preparation grades, if relevant, see EN 1090-2; e) tolerance classes, see 4.1.4. NOTE The responsibilities between the parties involved can be regulated by member states.
4.1.2 Execution classes
Four execution classes 1 to 4, denoted EXC1 to EXC4, are given, for which requirement strictness increases from EXC1 to EXC4. The execution specification shall specify the relevant execution class or classes. NOTE The requirements for the selection of execution classes are given in EN 1993-1-1:2005, Annex C. The list of requirements related to execution classes is given in EN 1090-2.