user 32332
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- Aug 23, 2023
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Hey everyone, thank you for all that you do here. I work in the construction field (draftsman) so I am somewhat familiar with building materials, code, terminology but when it comes to plumbing vent flow, pipe architecture, I'm lost. My question is about relocating a toilet. In the picture below, you can see the existing toilet drain sloping down to the main drain stack which is vented up through the roof above where the other fixtures feed in. You can see where I have started the yellow line at the ceiling is where I need to relocate the toilet. My assumption is that I can run a new 3" drain line straight down and parallel the vertical drop of the main stack that is directly below it? Can I do this and feed it straight into a sanitary T at the existing line out to the septic and still use the same vent for this pipe? Thank you for your replies and for the hard work you plumbers put in on a daily basis, definitely a difficult job.