1.6 drain to out of the sink and sluice floor will be trapped trapped smell
1.7 exhaust pipe end (VENT) is higher than the roof top
at least 15 cm. And stick insect mesh at the end of the pipe
1.8 drain will have to tilt at least 1: 100 from ware to vertical pipe
1.9 editing must be cut to fit in the convergence phase pipe. The end of the pipe is cut to the core!Scrape scrap material stuck out. And the end of the pipe to the confluence, must clean, smooth and uniform
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