DIN EN 12812:2008 pdf download.Traggeruste – Anforderungen, Bemessung und Entwurf.
5 Materials
5.1 General
Only materials that have established properties and that are known to be suitable for the intended use shall be used.
5.2 Basic requirements for materials
5.2.1 Materials shall comply with European product Standards; where they do not exist national standards shall be used.
5.2.2 Where the relevant properties of materials and equipment cannot be obtained from the standards referred to in 5.2.1, their properties shall be established by testing (see 9.5.2).
5.2.3 Steel of deoxidation type FU (Rimming steel) shall not be used.
5.3 Weldability
The steel used shall be weldable, unless structural members and components are not intended to be welded. Welding shall be carried out in accordance with the requirements of EN 1090-2 and EN 1090-3. The design shall not require any welding of aluminium to be undertaken on site.
6 Brief
The design shall be based on a brief containing all necessary data including information on erection, use, dismantling and loading. NOTE 1 Concrete is a typical example of loading.
NOTE 2 Adequate information about site conditions should be obtained and included in the brief. Particular points are: — layout with levels, including adjacent structures; — general appreciation of the parameters relating to wind load calculations for the local conditions; — positions of services such as water pipes or electricity cables; — requirements for access and safe working space: — information about the ground conditions.
7 Design requirements
7.1 General The structure shall be designed such that all the loads acting on it are carried into the subsoil or into a load-bearing sub-structure. The available skill in erection and the ambient circumstances should be taken into account in the design. Provision shall be made for the means of access for erection, use and dismantling. Reference shall be made to EN 12811-1.
The design should be based on concepts and details which ensure a practicable realization and which are straightforward for on site checks.
7.2 Thickness of material
7.2.1 Thickness of steel and aluminium components The nominal thickness shall be not less than 2 mm.
7.2.2 Steel scaffold tubes Loose steel tubes to which it is possible to attach couplers conforming to EN 74-1, prEN 74-2 and baseplates and spigots conforming to EN 74-3 shall be in accordance with EN 12811-1:2003, 4.2.1.2. Tubes for incorporation in prefabricated components to which it is possible to attach couplers conforming to EN 74-1, prEN 74-2 and baseplates and spigots conforming to EN 74-3 shall be in accordance with EN 12811-1:2003, 4.2.1.3 and with EN 12810-1:2003, Table 2.
7.2.3 Aluminium scaffold tubes Loose aluminium tubes to which it is possible to attach couplers conforming to EN 74-1, prEN 74-2 and baseplates and spigots conforming to EN 74-3 shall be in accordance with EN 12811-1:2003, 4.2.2.1. DIN EN 12812 pdf download.