Building a House – #09 Underground Plumbing

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• It's a huge problem with the shower drain joining the toilet drain horizontally, a portion of toilet waste will overflow into the shower drain. While I'm plumbing my house, I opted to have the shower drain coming into waste drain from above. I don't live in US, so I'm glad not bounding by your country's code

• Toilet is no vented and the vent for the shower need to be put on a 45 degree minimum

• Very helpful, thank you.

• I've been in the plumbing/pipefitting business for 43 years. I see 3 corrections there. The 2" should be 3" with a full size clean out. The trap arm for the lavy can only be 3'-6" on 1-1/2" otherwise it has to be 2" at 5'-0". Also the floor drain needs a separate vent. In a basement system you'll need a backwater valve to provent flooding.

• Question. What are you going to do if there is a clog down stream of the toilet. Pull your toilet and flood your floor with poo-poup. UPC code specifies a mainline clean- out.
  Correction: a Quarter bubble on a torpedo level is not quarter inch per foot.

• Flat and wet venting and is not allowed in my area.

• Thanks for this video it answer an outstanding question I had about my rough ins for a bathroom in my basement. I thought I had to break up the concrete to add a drain for the sink vanity, you explained it at around 2:19. My rough in has the 3 same pipes coming up through the concrete. Thanks.

• In Texas you have to roll that vent on a 45 and a sweep for the toilet!! Also, every fixture has to have its own vent!!

• no Cleanout?

• Te faltaron muchos repiraderos y mas importanta el del toile