What is the function of two sewer pipes in the bathroom of the new building

Updated on Bathroom 2024-08-24
1 answers
  1. Anonymous users2024-01-24

    I'm from Jinyang Pipe, 2 sewer pipes are normal, and one can be used as a floor drain.

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Then the downstairs is miserable, the sewer pipe is not ventilated, and the downstairs toilet drains from other drains or floor drains.