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What is cascade drainage?
In the case of a stepped and staggered arrangement of rainfall areas, the drainage of each level must be directed over the floors below to the outlet at the bottom of the building. Traditionally, the drainage of several levels is carried out individually per level with separate pipe routing. This leads to the fact that 2 processes (main and emergency) with separate downpipes are added on each level. With 3 floors, this means that there are already 6 downpipes.
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