A 10' vertical pipe test must be applied to which system?

The requirement for a 10' vertical pipe test is specifically applicable to Drainage, Waste, and Vent (DWV) systems. This test is designed to ensure the integrity and proper functionality of the system under conditions that simulate the actual operational environment once it is installed. The vertical test helps identify any potential leaks or weaknesses within the piping design, making sure that waste and drainage will flow smoothly and safely without any risk of backflow or contamination.

Testing DWV systems with a significant vertical head of water helps to demonstrate that the system can withstand pressure and will perform effectively when subjected to the various forces that occur in real-life applications. This aspect is critical for maintaining hygiene and preventing any health hazards associated with sewage or waste water. The other systems listed have different testing requirements tailored to their specific functions and regulations.