What is the maximum number of urinals that can be connected to a 2-inch vent?

The maximum number of urinals that can be connected to a 2-inch vent is based on plumbing code guidelines, which are designed to ensure proper drainage and venting in a building's plumbing system. The plumbing code typically specifies how many fixtures can be served by pipes of certain diameters, and for a 2-inch vent, the code allows for a maximum of 4 urinals to be connected.

This specification is rooted in ensuring that each urinal has adequate airflow in the venting system to prevent siphoning and maintain proper waste drainage. If more than the allowed number of urinals were connected to a vent of this size, it could lead to venting issues, which would compromise the functionality of the plumbing system and could potentially cause sewer gas to enter the building.

In contrast, the other options refer to different fixtures, each with their own requirements for venting and drainage. The specifications for bathtubs, showers, and sinks are typically different, and a 2-inch vent may allow for a different number of these fixtures based on their individual sizing in the plumbing code. Understanding these specifications is critical for compliance with the building standards and ensuring the efficiency of the plumbing system in any construction project.