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- Sat Oct 01, 2011 6:36 am
- Forum: Flow calculators and fluid flow problems
- Topic: Required drainage pipe size for catchment
- Replies: 0
- Views: 5898
Required drainage pipe size for catchment
Hi All, As part of installing a driveway I need to cross a gully. To do this I need to provide drainage under the crossing for the council approval. For a total catchment area of 39000m squared with an average grade of the catchment being 1:5 does anyone know what pipe diameter I would need to insta...