What is another word for soil pipe?
Pronunciation: [sˈɔ͡ɪl pˈa͡ɪp] (IPA) 
A soil pipe is also referred to as a waste pipe, drainage pipe, or sewer pipe. The purpose of a soil pipe is to carry wastewater and sewage from households and commercial buildings to the sewer system or septic tank. In addition to these synonyms, a soil pipe is also called a plumbing vent, vent pipe, or stack pipe. These terms refer to the vertical pipe that extends from the roof of a building and allows air to enter the drainage system, preventing water from flowing sluggishly or backing up. Synonyms for soil pipes generally depend on the geography and local terminology, but they all serve the same purpose in household drainage systems.
