The underground part of the toilet drainage system in the old fashioned unit building refers to the

Updated on Bathroom 2024-03-07
1 answers
  1. Anonymous users2024-01-23

    The drainage riser is not connected to the sewage well through the garage. Specifically, the drainage riser passes through the garage roof and then walks horizontally along the garage roof to the garage exterior wall, and then passes through the garage exterior wall to the outdoor drainage pipe. As for the drainage from the ground of the garage itself, the water flows into the collection well, and then discharges it into the outdoor drainage pipe with a water pump.

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