What is the fixture unit rating for a typical residential bathroom sink?

The fixture unit rating for a typical residential bathroom sink is 1. This rating is based on the Uniform Plumbing Code (UPC) or International Plumbing Code (IPC), which standardizes the way plumbing systems handle the load created by different fixtures.

A bathroom sink is assigned a fixture unit value of 1, indicating that it contributes a specific amount to the total demand on the plumbing system. This rating helps in calculating the required pipe sizing, fixture placement, and overall water supply requirements for a residence.

In contrast, higher ratings would apply to fixtures that contribute more to the plumbing load, such as showers or bathtubs. Understanding these ratings is essential for plumbing design and ensuring efficient water delivery in residential structures.