It really depends on the use. If you absolutely need pitch towards the trench drain to remove constant flowing water, then you need to go wide. I often run a 5' swale on each side of the trench drain. But if you only need it for inconsistant flow you can squeegy off the floor, then a 1 to 2' cut around the outside of the trench should do the trick.
Raymond VinZant Plumbing Prof. |
Member Since
08/30/2004
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230 Posts
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