Surface water run-off
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Revision as of 15:24, 5 March 2019
Surface water run-off is: 'Water flow over the surface of roofs and ground surface to a drainage system. Ground surface run-off occurs if the ground is impermeable, is saturated or if the rainfall is particularly intense.'
Volume of run-off is: 'The volume of run-off that is generated by rainfall occurring on the site. This is typically measured in cubic metres. Additional predicted volume of run-off is the difference between the volumes of run-off; pre-development, greenfield and post development.'
Ref Home Quality Mark One, Technical Manual SD239, England, Scotland & Wales, published by BRE in 2018.
Related articles on Designing Buildings Wiki
- BRE articles.
- BREEAM Surface water run-off.
- Building Research Establishment.
- Design flood event.
- Design flood level.
- Greenfield run-off rate.
- Greenfield volume of run-off.
- Pre-development.
- Home Quality Mark.
- Sustainable urban drainage systems.
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