Does the fecal pipe in a residential building have an outlet pipe on the roof?

Yes.

Children who live in buildings must know that the kitchen and toilet are equipped with relatively thick sewer pipes. This

thick pipe leads downward to the sewer and upward through the roof of the building. .

This is because there is not only wastewater in the sewer pipe, but also air. If the air is not given a way out,

it will block the sewer. When the wastewater flows downward, it will also The air is pushed upward, allowing the air to flow into the atmosphere on the roof

and the wastewater flows smoothly into the sewer.