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Basic guide to calculating falls and gradients for drainage

by Andy Heath | Feb 10, 2018 | Home & Garden, Property

Pipe Gradients All above ground and below ground horizontal drainage pipes should be laid to an adequate gradient. Gradients from 1 in 40 to 1 in 110 will normally give adequate flow velocities. A gradient of 1 in 80 is suitable for commencing calculations for pipe...

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