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If the sewer is blocked, you can find property maintenance, and generally in this case, there is a need for costs.
Did it go out from under the ground floor? The specification stipulates that there should be an inspection port at the place where the riser turns to the horizontal pipe, and a compartment should be set up in the future!
Two roots, each household shall be separated.
There is no clear provision in the construction quality acceptance specification for building water supply and drainage and heating engineering to install a water-stopping ring, so the water-stopping ring can not be installed when the design is not clearly specified in the construction.
Not more than 3 meters, generally one layer.
If it does not affect, do a good job of the drainage pipe of the kitchen sink S bend is not blocked, and the S bend is fine if the water is stored normally, and it is anti-odor.