Question

From the most downstream fixture drain connection on a circuit vent to the most upstream fixture drain connection to the horizontal branch, the horizontal branch drain shall be classified as a ________?

1) Waste pipe
2) Soil pipe
3) Vent pipe
4) Drain pipe

Answer 1

The horizontal branch drain from the most downstream fixture drain connection on a circuit vent to the most upstream fixture drain connection is classified as a drain pipe.

Step-by-step explanation:

The section of the horizontal branch drain that extends from the most downstream fixture drain connection on a circuit vent to the most upstream fixture drain connection to the horizontal branch should be classified as a drain pipe. When concerning sewage systems, a drain pipe is designed to carry liquid waste or sewage from fixtures to the sewage system.

This kind of pipe is distinct from vent pipes, which are meant to ventilate the sewage system and prevent the build-up of harmful gases, and from soil pipes, which typically convey discharge from toilets and urinals.