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Going to tap into the sewer line in the basement for a new 3/4 bathroom. Can I run a 4" branch to the toilet and have two 2" wye connections for the shower and vanity? Below shows the sewer location.

Concept of the new bathroom layout

This image shows the new branch, 4" to toilet with wyes. Green is vents. I might do studors?

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  • Hello, and welcome to Home Improvement. Good diagrams, but what slope will these pipes have? And, you should probably take our tour so you'll know how best to participate here. – Daniel Griscom Aug 18 at 19:59
  • Thanks for the warm welcome! The slope will be 0.25" per foot. I was reading other DIY questions here and I think I have a good idea of what is necessary. I will update the question with an isometric drawing to show things a bit better. It will help me when I get a permit too. – CGSmith105 Aug 19 at 21:06

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