What is the fixture unit value for a standard urinal in a stall?

The fixture unit value for a standard urinal in a stall is widely recognized as 2 fixture units (FU). This value is derived from plumbing codes and guidelines that estimate the demand placed on a drainage system by various plumbing fixtures. In this context, the unit of fixture value is a numerical representation of how much water a fixture uses and how much impact it has on the overall plumbing system.

A urinal is typically considered a less water-intensive fixture compared to others, such as toilets, which can have higher fixture unit values. Designating a urinal with a value of 2 FU reflects the typical usage patterns and the flow characteristics associated with urinals in a public or commercial setting. This serves practical purposes, such as sizing the drainage pipes and designing the overall plumbing system, ensuring that they can effectively handle the peak flow demands without causing backflow or inadequate drainage.

Selecting 2 FU for a urinal balances the needs of efficiency with the capabilities of plumbing systems, forming a standard that is relevant in plumbing design and codes.