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

Galvanised or stainless steels can be used to improve the corrosion resistance of steel used for the reinforcement of concrete members. The advantage of using reinforcing steel with improved corrosion

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

This work area covers load-bearing plastic elements for swimming pools and water slides, in particular elements made of fibre-reinforced plastics. Plastics construction

Membrane structures are composed of thin, fabric-like materials. Due to their low self-weight, they are suitable for spanning large areas. They are used, e.g., as space-dividing, thermally insulating

A sandwich panel consists of two faces and a supporting core. The supporting core is made of a thermally insulating material. It is connected to the two faces via an interference fit such that the thr

Reaction resin concretes or reaction resin mortars are used for strengthening and repairing timber structures, where applicable in combination with textile-reinforced rebars. Timber construction

Prestressing steel bars are used in various prestressing systems for concrete structures. Prestressing steel bars are manufactured in hot rolling mills (by quenching, cold-drawing or additional temper

Prestressing steel strands are used for prestressing structures. A prestressing steel strand is made from a number of wires twisted together in the same direction and with the same lay length. The str

Prestressing steel wire is used for prestressing concrete structures. Prestressing steel wire is made of wire rod which is either manufactured by cold-forming and subjected to a finishing thermo-mecha

Reinforcing steel in coils is hot-rolled and cold-drawn reinforcing steel in coil form. It is manufactured in coils or wound on reels at the manufacturing plant and then straightened, bent and cut or

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

Membranes for use as roof or wall underlay are installed underneath the roofing of pitched roofs or underneath the external wall cladding. They serve as an additional rainproofing measure to prevent t

Flexible sheets for concrete waterproofing are used as an additional waterproofing measure for waterproof concrete systems. For this, the flexible sheet is inserted into the formwork prior to concreti

Joint sealing tape is used to seal joints between windows and facades or facade joints for protection against wind and driving rain. It is usually compressible to compensate for temperature-induced fa

Punching shear reinforcements are special reinforcements used in place of stirrups or bent reinforcements to increase the punching shear resistance of beam supports for reinforced concrete floor slabs

Liquid applied roof waterproofing kits are usually multi-component systems and are applied in liquid form in multiple layers. After curing, they form the roof waterproofing. Waterproofing of buildings

Waterproofing slurries are used for waterproofing of buildings. Differentiation is made between mineral-based waterproofing slurries (rigid or flexible) and polymer-modified thick coatings. In additio

Drainage systems serve to drain rainwater or surface water from buildings in a defined manner. They are used below roof vegetation or are installed below ground around structures. There are linear and

Bridge deck waterproofing protects the bridge structure and/or any components or structures underneath it from water ingress. Bridge deck waterproofing usually consists of multiple layers, such as a p

Polymer-modified bitumen thick coatings are used for waterproofing elements in contact with soil. Waterproofing of buildings

Non-load-bearing internal partitions serve to divide rooms. They do not contribute to the stability or bracing of the building. However, there may be requirements with respect to sound insulation, the

Systems for restoring leak tightness of sealing systems made of concrete in storage and filling facilities for manure, slurry and silage effluent (MSS facilities) and biogas storage and filling facili

Combined pile/slab foundations are defined in DIN 1054:2010-12 as geotechnical composites consisting of a foundation slab and piles or diaphragm wall elements. This form of foundation engineering is u

Where necessary, penetrations are subsequently sealed against water ingress, e.g. penetrations for roof installations or for cable or pipe penetrations in basement walls; subsequent sealing of formwor