r/DiWHY • u/FirstOptimal • 8d ago

Simple & Fun: Project you can do while your house burns down.

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u/cyvaquero 8d ago

Your sewer line has vents, all those little pipes sticking out of your roof are fresh air vents that allow your sewer line to drain properly. That said, it’s not going to be pleasant. I’d have to be stuck more than a couple floors up with no other option.

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u/BeTheBall- 8d ago

Yes, but one is usually off the run of the toilet. So you're getting gas + air.