The minimum required depth of a floor sink is __________________.

The minimum required depth of a floor sink is specified as 6 inches according to the plumbing code. This requirement ensures that the floor sink can effectively handle the volume of drainage it is designed for, allowing for adequate water flow and preventing clogs. The depth also contributes to maintaining proper trap function, which is crucial in preventing sewer gases from entering the building's interior. By adhering to this minimum depth, homeowners and contractors can ensure the efficient operation of the plumbing system and compliance with code standards. This depth is determined based on the typical requirements of commercial and residential applications where floor sinks are commonly installed.