I'm planning a new pipe to take rainwater but avoiding tree roots,
6 inch, 160mm orange, but is it possible to have a slightly curved pipe run which could be better than having several 15 degree joints?
yes. the theory behind foul water pipe layout design as far as building regs goes, is that you should have straight roddable runs, and only change direction with an accessible manhole or at least a rodding point.
I am not *aware* of any such restrictions on rainwater runoffs.
why not...take a chance
You want non-perforated flexible land drain. Significantly cheaper than that stuff too.
Just avoid having significant "dips" in it which will eventually collect silt/dirt/moss off the roof.
Min. trenched depth ?
Pipe rise over run ?
Once the enormity of the project is evident, that'll take all the "loop-de-loos" out of it. A straight run of pipe is a lot easier to plan. And if you're good, shining a flashlight down one end, will have light come out the other end.
Like, say, a laser level to help mark the correct rise over run.
You don't want water sitting in a section of the pipe, as it may freeze up when the frost is in the ground.
And at six inches diameter, you'll need a means to keep small animals out of it.
The chipmunks here, persist on climbing up the drain pipe, then every time there is a heavy rain, all their seed cache is washed away. They just never learn :-) Fortunately for them, they keep multiple houses, so they're never out of food.
Paul
Domestic rainwater and sewage pipes are usually 100mm though. Is this a domestic building ?
its from 5 properties up hill of here so may have to be 6 inches/160mm .
I want to avoid a big Copper Beech tree's roots as much as possible and was thinking a gently curved pipe may be better than several 15 or 30 degree joints in straight pipes.
thanks
george
Definitely. Also available in 50m coils. You'll need two or three people to manage getting it into the ditch.
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