A floor drain requiring a 2" trap is equivalent to how many units?

A floor drain that requires a 2" trap is typically considered to be equivalent to 2 drainage fixture units according to plumbing codes. This unit measurement is part of a system that helps determine the load that a plumbing system can handle. Drainage fixture units are used to quantify the contribution of various fixtures to the overall drainage load in a system, allowing for proper sizing of pipes and drainage systems.

The classification of drainage fixture units helps ensure that plumbing systems are designed efficiently and can manage the expected volume of water from different fixtures. A 2" trap being assigned 2 units indicates that this size trap is expected to adequately serve the drainage needs of the associated floor drain without risking overloading the system. This standardization helps contractors and plumbers ensure compliance with local codes and proper function of plumbing systems.