22 first-class construction engineer electromechanical prediction test point indoor drainage pipe , one construction finishing point prediction, long press and like + forward + evaluation continue to be updated, Wendang version click on my avatar private message to me: 2022
(1) Pipeline and accessories installation
1) Indoor domestic sewage pipes should be set according to different materials and pipe diameters such as cast iron pipe , plastic pipes, etc., and the slope of cast iron pipes should be higher than the slope of plastic pipes.
2) The drainage plastic pipe must be equipped with telescopic joints according to design requirements and location. If there is no requirement for the design, the spacing between the telescopic links is ≤4m. Fire rings or fire casings should be set up in high-rise buildings in open drainage plastic pipes according to design requirements.
3) The drainage pipe and the overflow pipe of the drinking water tank derived from the catering industry process equipment shall not be directly connected to the sewage pipe, and a partition space of no less than 100mm should be left.
(2) System irrigation test
1) Concealed or buried drainage pipes must undergo irrigation test before concealing, and the irrigation height should not be lower than the upper edge of the underlying sanitary utensils or the height of the ground floor. After the water drops for 15 minutes, fill it up and observe for 5 minutes. The liquid level does not drop and there is no leakage in the pipeline and interface.
2) After the rainwater pipe installed indoors, the water irrigation test should be performed. The water irrigation height must reach rainwater bucket on the upper part of each riser. The irrigation test lasts for 1 h without leakage.
