For anodised quality aluminium profiles, EN AW-6060 T66 (AlMgSi0.5 F22) shall be used in accordance with DIN EN 573 and DIN EN 755. For parts subjected to greater loads, AlMgSi0.5 F25 or AlMgSi1 F28 shall be used. DIN EN 12020-2 applies with regard to tolerances.
For aluminium sheeting, the anodised quality alloy AlMg1 in accordance with DIN EN 573 and DIN EN 485 shall be used. The sheet thickness is to be dimensioned in accordance with structural requirements. In the case of the façade sheeting, care should be taken to ensure that the grain of the panels is uniform when installed.
Steel parts must meet the requirements of DIN 18800 and DIN EN ISO 1461. Wall thicknesses upwards of 4 mm are to be supplied hot-dip galvanised with a minimum layer thickness of 100 micrometers. Wall thicknesses of less than 4 mm can be produced from sendzimir galvanised steel sheeting. Corrosion protection shall be carried out in accordance with DIN 55928.
Generally, the types of construction used should not necessitate welding on site. If, however, it is necessary to weld steel parts, these parts should be cleaned immediately after welding with a wire brush and coated with zinc paint.
Steel building components (in St 37) that are subject to structural stresses can only be used on surfaces which remain accessible after installation and which are protected against corrosion in accordance with DIN 55928.
Building components subject to structural stresses which are situated in the cold or external area of façades in accordance with DIN 18516, Part 1, must be manufactured from stainless steel, aluminium or a corrosion-free material.
Combining aluminium with other materials
Combining with metallic materials
Combinations involving immaculately hot-dip galvanised steel (DIN EN ISO 1461) and stainless steel, e.g. austenitic CrNiMo steel (1.4401) or CrNi steel (1.4301) are absolutely reliable. Information can also be found in the data sheet regarding the execution of metal roofs published by the German Sanitation, Heating and Air Conditioning Association, St. Augustin. Combinations involving copper, structural steel and heavy metals are not permitted. If the use of these materials is intended, intermediate layers consisting of EPDM or plastic sheeting without an appropriate coating, for example, are required.
Load-bearing fixings such as screws, bolts and similar must consist of stainless steel or aluminium. For outside wall claddings, DIN 18516 applies. Screw connections in thin walls of aluminium profiles that are subjected to a load must be reinforced by fillers, nuts, threaded rivets or similar.
Where clamped connections are used, safeguards such as screw securing agents must be applied to ensure that the connection cannot come apart of its own accord.
Construction joints, structural junctions and other joint seals shall be designed with materials that are resistant to temperature and the effects of ozone, weather and ageing.
Elastomer materials, preferably EPDM, shall be used for sealing gaskets. The quality must be in accordance with DIN 7863. The condition, dimensions and design of sealing gaskets must be appropriate for the intended purpose (DIN 18361). Their elastic properties (in particular the restoring forces) must satisfy the requirements in the applicable temperature range.
In terms of their properties, sealants must be appropriate for their intended purpose (DIN 18361 and DIN 18540). In accordance with DIN 52460, they may not contain any aggressive constituents.
Joints shall be dimensioned taking into account the expansion and compression capability of the sealant as well as the expansion and shrinkage of the building element. The manufacturer´s instructions pertaining to application and processing shall be followed.
Building sealing membranes shall be supplied in accordance with DIN 7864 and must fulfil the intended purpose in accordance with DIN 18195. They may only be used and installed in accordance with the manufacturer´s processing guidelines.
Insulating materials have to satisfy the requirements of DIN 18164 and/or DIN 18165. They must be installed free from any thermal bridges and maintain their shape. Mineral-fibre insulation slabs shall be water-repellent in accordance with DIN 18165. Construction joints shall be backfilled with loose mineral wool.
Only proprietary brands such as ROTO, GEZE, GU, or equivalent that are harmonised with the system shall be used. All the fittings that are needed for proper functioning are supplied and assembled, including also the retainer arms in the case of flush-fitting sashes. Unless specified to the contrary, the fittings effected shall be concealed tilt-turn hardware. The scope of supply includes detailed servicing and maintenance instructions for the fittings.
The quality and dimensions of the glass must meet the requirements of DIN 18361, unless described to the contrary in the performance specification. The special guidelines and regulations of the glass manufacturers must be observed, in particular when using insulating and special glass.