A service sink with a three inch trap standard would have a fixture unit rating of?

A service sink with a three-inch trap typically has a fixture unit rating of 3. This rating is based on the plumbing code that assigns values to various types of plumbing fixtures, which helps in designing and sizing drainage systems appropriately.

The three-inch trap denotes a certain flow capacity, which aligns with the fixture unit assignments. A rating of 3 fixture units reflects a moderate level of usage, allowing for proper wastewater management while ensuring that the plumbing system can handle the expected load without issues such as backups or overloading.

Understanding fixture unit ratings is crucial for plumbing design, as it ensures that systems are sized correctly based on expected usage, ultimately contributing to effective and reliable plumbing installations.