What is the term for a vertical vent that continues from the drain it connects to?

The term "Continuous Vent" refers to a vertical vent that extends directly from the drain that it connects to without any horizontal offsets or interruptions. This type of vent is essential because it allows for the proper escape of gases and maintains air pressure in the drainage system, thus ensuring that wastewater can flow freely without creating siphoning action that could lead to traps being emptied.

Using a continuous vent promotes efficient venting, which is crucial for maintaining the functionality of plumbing systems. It helps prevent negative pressure in the drainage lines, which can lead to slow drains or backups due to inadequate venting. In a plumbing system, having a straight, vertical path for venting is advantageous as it helps to minimize the risk of clogs and contributes to better overall performance of the plumbing design.

In relation to the other options, "Continuous Waste" typically refers to a type of drain system, while "Cross Connection" pertains to the undesirable connection between potable and non-potable water systems, which can lead to contamination. "Developed Length" is a term that usually speaks to the total length of piping in a given system, rather than referring to a specific type of venting.