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Anonymous users2024-01-23This is possible, this is set to the actual pressure of the digital yellow finger at the end of the automatic sprinkler system, this is allowed, and it is set up in the toilet near the end.
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Anonymous users2024-01-22There is no such thing as legal or illegal.
The ceiling has manholes, and the straight pipe can be modified with hidden walls. This is the fire sprinkler end drainage.
In all residential buildings, the main riser of the water supply and the main riser of the drainage pipe are shared, which is a design need, so it is reasonable and legal.
If it is water seepage in the ground, it must be re-attached and waterproofed.
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