Today more than ever, environmental protection is our passion. It is essential to protect the environment, particularly our waterways as they are fundamental to human life and survival. Anchoring for plants containing water polluting substances that are not outfitted with two sealing levels must fulfil specialised requirements in accordance with the German Water Resources Law (WRL, in German WHG) and the regulations on facilities for handling substances that are hazardous to water (AwSV).
The guidelines of the Deutscher Ausschuss für Stahlbeton (DAfStb) “Concrete construction for the handling of water polluting substances” (BUmwS) require the use of bonded anchors that have a usability certificate issued by the building approval authorities. This requirement is ideally fulfilled by a general design certification. fischer has developed and tested a system confirmed as approved for use with existing liquid impermeable concrete (LI/LIP concrete), and has received the first general construction technique permit from the Deutsches Institut für Bautechnik (German technical authority and a serviceprovider for the construction sector DIBt) for a variety of media groups. For coated concrete, fischer has verified through an accredited testing institute and expert report that the fixing system fulfils the WRL. The system also has an ETA for static load, which is a requirement for the design certification.
No matter if LI/LIP concrete or coated concrete: The whitepaper from fischer will answer all key questions regarding WRL compliant anchoring:
Water bodies are an elementary component of the natural balance and serve both as the basis of human life and as a habitat for animals and plants. Therefore potential contamination of water bodies (surface waters and groundwater) must be avoided as a matter of principle. The regulation on facilities for handling substances that are hazardous to water (AwSV) provides concrete specifications for plants handling substances hazardous to water. Summarized briefly, plants such as these must always be designed as a redundant system with a primary and secondary protective barrier.
The “Concrete construction for the handling of water-polluting substances” (BUmwS) guideline by the German Committee for Reinforced Concrete (DAfStb) stipulates that only anchors approved by the building authorities in combination with proof of usability regarding the substance in use may be used for fastenings in concrete sealing surfaces. This is precisely where fischer comes in and offers solutions with which anchorings in WRL sealing surfaces can be carried out safely in accordance with the
WRL and facilities regulation (AwSV). The high-performance injection mortar FIS EM Plus in conjunction with the fischer system components offers the perfect solution for WRL sealing surfaces, both in LP/LPP concrete and in coated WRL surfaces.
LI/LIP concrete is a type of concrete with special resistance against penetration by water polluting substances. LIP concrete is a liquid impermeable concrete with penetration testing. LI concrete is designed to be considered as liquid impermeable, based on its specialised recipe.
Tested & officially approved
When installing anchors in WRL sealing surfaces, a hole is drilled into the WRL surface, potentially reducing the tightness at this location. However, the tightness and resistance must be verified in the area of the anchors as well.
Now, fischer offers solutions for these applications that can be used to install anchors in WRL sealing surfaces according to the German Water Resources Law (WRL) and facilities regulation (AwSV).
With the injection mortar FIS EM Plus, fischer has obtained the first general design approval for WRL compliant anchoring in liquid-proof concrete (LI-/ LIP concrete). The system was comprehensively tested with materials in media list 4 of the German Institute for Structural Engineering (DIBt).
fischer has had the injection mortar FIS EM Plus tested by an accredited testing institution in a commonly used coating for anchors in coated WRL surfaces, and had its suitability confirmed by an independent report. This verifies that the injection mortar FIS EM Plus is sealing and resistant to the materials listed in DIBt media list 1.
WRL labelling with marking disc:The marking disc is an important part of the fischer WRL fixing system. It clearly and permanently indicates use of the correct system, and facilitates simple, reliable building approvals. It is mounted between the washer and attachment.
Water, soil and nature conservation are an important part of environmental protection. When handling substances hazardous to water, every company must comply with certain regulations and requirements under water law and ensure that adverse changes to soil and water are prevented. However, water protection begins long before the construction of buildings, assembly of machinery and equipment and commissioning, namely already in the planning stage - also of anchorages.
Anchorages in the so-called secondary safety barrier of installations containing substances hazardous to water must meet special requirements in accordance with the Water Resources Law (WRL) and the Installations Ordinance (AwSV).