Single-skin tanks made of metal (mainly steel) for the above-ground stationary storage of liquids hazardous to water are available in various volumes and shapes. Common variants include: vertical cyli

For internal bonded post-tensioning, the tendons are arranged in a sheath (tendon duct) which is grouted after the prestressing force has been applied. These post-tensioning systems are used for prest

Adhesives are used in timber construction for the manufacture of glued elements and for the bonding of elements, including glued-in threaded rods or sheets, or for screw-press bonding. This page addre

Grout is used for filling ducts for internal bonded tendons or sheaths for external tendons. It serves to establish a form and interference fit between the concrete and the prestressing wires and to p

Reinforcing steel bars, or rebars for short, are reinforcing steel in the form of straight bars used to reinforce concrete members. The approval area only concerns rebars which deviate significantly f

Small wastewater treatment systems serve to purify domestic foul water from buildings with up to 50 inhabitants. The wastewater is treated using physical and biological processes. Small wastewater tre

Scaffold couplers in accordance with EN 74-1 or EN 74-2 are the most common form of detachable connectors in scaffolding. They usually provide an interference fit between scaffold tubes. Couplers are

When applying floor construction techniques comprising lattice girders, the floor is constructed from precast concrete slabs, lattice girders as reinforcement and an in situ concrete overlay. Precast

For accessories in the field of heating appliances that due to their innovative functions have not yet been covered by technical specifications, regulatory verification of fitness for use/application

Corrosion protection systems are applied to the surfaces of metallic materials of low corrosion resistance. The primary goal is to extend the fields of use of such materials to more corrosive environm

Liquid-tight collecting trays and devices are enclosures serving to meet the requirement for secondary containment under water law. They are used to collect and retain substances hazardous to water le

Non-combustible building materials ensure that, when exposed to fire – especially an advanced or fully developed fire – the relevant parts of the structural works do not contribute to the fire. Reacti

Ground anchors are prestressed anchor systems for transmitting tensile forces into the load-bearing ground, e.g. for anchoring shoring systems or slope stabilisation. Ground anchors consist of tendons

Barrier glazing is glazing designed to prevent people from falling to a lower level. In the event of impact on the glazing, the risk of injury is supposed to be low. Furthermore, the lower-lying traff

Due to their thermally insulating effect, fire-protective render systems increase the fire-resistance duration of the clad components. The render system consists of a dry mortar, which is mixed with w

Metal pipes and the associated fittings, seals and valves used in the conveyance of liquids hazardous to water must meet certain tightness and media resistance requirements set out in water legislatio

Joint sealing systems in SFH facilities Joint sealing systems, e.g. sealing strips, sealing sheets, compression profiles, extruded profiles, sealing tapes, coated sealing sheets and sealing compounds,

Leakage detection systems are used for detecting leaks in storage and filling facilities for manure, slurry and silage effluent (MSS) and biogas storage and filling facilities (biogas SF facilities),

Welded fabric and steel wire mesh products are prefabricated reinforcements consisting of longitudinal and transverse wires welded together. They are used to reinforce slab-shaped concrete members. We

Inner linings are prefabricated elements used for on-site lining of drains and manholes. They usually serve to improve corrosion protection. Inner linings must be fixed durably and tightly to the drai

Other concrete construction techniques include, e.g., knife-edge bearings and ring beams. A knife-edge bearing is used to introduce vertical and horizontal forces into sheet piling profiles and steel

Coatings (including inner coatings) and linings are used for creating liquid-tight sealings for collecting trays, collecting rooms and surfaces in storage and filling facilities for manure, slurry and

External thermal insulation composite systems, or ETICS for short, are multi-layer systems used to insulate the external wall of a building. They consist of insulation boards bonded to the substrate u

Building materials classified as not easily flammable ('schwerentflammbar') ensure that when exposed to an initial or growing fire, the relevant parts of the structural works only make a limited contr

Catalysts are used in firing systems to optimise the combustion processes and reduce the amount of harmful flue gas substances produced. Heating appliances, chimneys