A washing machine is assigned how many fixture units?

A washing machine is assigned 2 fixture units according to standard plumbing codes. Fixture units are a way to estimate the demand that a fixture places on a plumbing system, particularly in terms of the required size of drainage pipes and the capacity of the water supply system.

The assignment of 2 fixture units to a washing machine reflects its moderate potential for water usage and discharge, considering that it operates at various cycles that may include filling, draining, and spinning. This classification allows plumbers and engineers to effectively size the plumbing system to accommodate multiple fixtures simultaneously without risking overloading the system. It's important to understand that each fixture's contribution helps in designing a plumbing system that maintains proper flow and drainage while preventing issues like clogs or inadequate water supply. Knowing this classification allows plumbers to plan combinations of fixtures for optimal performance and efficiency in both residential and commercial settings.