How long can toilet vent be?

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jephph

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I need to vent my toilet drain pipe. I would like to run it out the side of my house, which is about a 30ft run. Would that work?
 

JohnjH2o1

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As long as it doesn't run horizontal below the flood rim of the fixture.

John
 

jephph

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I was going to run it horizontal below the toilet. Since that is out of the question, I'll have to go through the wall. What is the maximum angle I can have on it before it gets above the flood rim? Can I put 45s on it?
 

jephph

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Anyone? There is already a 3" pipe running vertically off the drain pipe, but it's a few feet from the wall. If I'm going to go through the wall, I'm going to have to go diagonally first. Can I run a 45 off that pipe, then another 45 to get it back to vertical?
 
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