Sealants for drains serve to prevent, in connection with pipework parts such as pipes and fittings, the leakage of discharged waste water. In the case of underground drains, the sealant also ensures t

Trenchless rehabilitation techniques are increasingly being applied in wastewater engineering today. For the rehabilitation of underground supply pipes and drainage pipes, techniques such as lining wi

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

Infiltration elements form part of the property drainage system. They serve to store or retain rainwater. If infiltration elements are used on a property, it must be ensured that no dangers to the adj

Central heating appliances ( Sammel-Feuerstätten ) are heating appliances that heat a medium (usually heating water) and provide warmth to a building via the ductwork and radiators. They are not to be

Thermoplastic moulding compounds are used in a variety of ways to manufacture semi-finished products and construction products. They are used, for example, in the manufacture of bulk silos, cesspits a

Filling systems are composed of branched filling lines (pipes) and are used to fill several tanks of a heating oil system or diesel storage system simultaneously (battery installation). Plastic tanks,

Plastic pipes are especially suitable for conveying certain liquids hazardous to water because they often have a more favourable corrosion behaviour than metal products and hence are resistant to vari

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

Special fire-resistant components in ventilation technology are service duct components consisting mainly of a supporting tray, cladding, supply and discharge lines, electrical cables and ventilation

Fire protection systems mainly consist of straight air duct sections, fittings, seals, connectors and fasteners, classified or unclassified wraps and shut-off devices for fire and smoke etc. They may

Fire dampers are installed in air ducts of ventilation systems in the area of fire-resistant separating elements to prevent the spread of fire and smoke along the ductwork to other fire compartments f

Cesspits are liquid-tight tanks, usually installed underground, for waste water containing faecal matter (sewage). Given that cesspits are not connected to the sewer system, professional emptying and

Metal sealings are installed in collecting devices made of concrete to make them liquid-tight. Liquid-tight collecting trays and devices are enclosures serving to meet the requirement for secondary co

The category of 'free-standing chimneys' also includes chimneys that are restrained or supported laterally or mounted on top of another structure. Special constructions

Bulk silos made of plastics – glass fibre-reinforced polyester resin (UP-GF) or polyethylene (PE) – are vertical cylindrical containers with funnel-shaped bottom outlets. They are used, e.g., for stor

Together with reaction resins, textile strengthening materials (glass fibres in the form of woven fabrics, rovings or meshes) are used to manufacture plastic laminates (GFRP). These laminates are used

Reaction resins (vinyl ester resin, epoxy resin, polyester resin) in their cured condition are thermosets and are used in construction products in a large variety of ways. Laminates made of these resi

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

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

Cesspits are watertight tanks for domestic waste water containing faecal matter (sewage). Given that cesspits are not connected to the sewer system, professional emptying and disposal must be carried

The work area 'Strengthening of concrete structures with bonded reinforcement' comprises kits for retrofitting aimed at increasing the flexural and shear resistance of existing concrete structures (st

Concrete technology

Concrete constituents

Soil mixing techniques serve to create unreinforced structural elements (single elements or bodies of soil made of single elements) through grouting of the soil with a binder suspension on site. With