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Krušik - Plastic Sewage Manholes
Krušik spiral plastics sewage manholes are designed and manufactured in accordance with EN 13598-2. Thanks to their design, flexibility of manufacturing and material they are made of, they are very suitable for all the mentioned functions because they provide an easy, fast and safe access for the needs of inspections and interventions as purging of clogged pipelines and potential repairs of pipes. The manholes are easy to handle and simple for instalation.
The body of the Krušik spiral sewage manhole is made of our spirally-wound plastic pipe, while the rest of the constitutive parts of the manhole, such as inlet and outlet fittings, the bottom and the bench are fixed to the body by welding with totally watertight welds (seams). Such a combination of materials and manufacturing method results in the fact that using our manholes eliminates porosity and leakage of the manholes. In that ways it is possible to eliminate problems which could cause leakage and spillage of waste waters into the surrounding soil as well as a consequent contamination. The manholes are manufactured in the same range of diameters as our pipes – the inner diameter ID from 300 to 3200 mm.
The wall thickness, the strength and the ring stiffness of the manholes can be either chosen according to EN 13598-2, or calculated for each single case and burial conditions (depth, the type of surrounding soil, ground water, external loads…) in accordance with internationally accepted norms ASTM F 1759 and EN 1778.