GRAF UK Ltd
 
Tel. +44 1608 661-500
Fax +44 1295 211333
info@grafuk.co.uk
www.graf-water.co.uk
Regen House, Beaumont Road
Banbury, Oxfordshire, UK-OX16 1RH

Heavy rainfall

Heavy rainfall

For the dimensioning of a rainwater seepage system the locally expected precipitation quantity is a decisive factor. The values usually used correspond to precipitation events with a 5-year probability. Seepage systems should be of sufficient dimensions to store and percolate short periods of heavy precipitation (thunderstorms) and long-lasting continuous rain over several hours.

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https://www.graf-water.co.uk/rainwater-harvesting/all-about-rainwater-harvesting/lexicon/begriff/heavy-rainfall.html

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