What is the minimum allowed distance from the floor to the center of the tee serving a clothes washer?

The minimum allowed distance from the floor to the center of the tee serving a clothes washer is established to ensure proper drainage and prevent any potential clogs or water backing up into the appliance. Positioning the tee at least 6 inches above the floor allows for an adequate flow of wastewater, facilitates venting, and minimizes the risk of debris entering the drainage system. This height also helps maintain a proper trap seal and can assist in preventing sewer gases from escaping into the living space.

Other choices, while possibly reflecting different standards or preferences in other contexts, exceed the minimum requirement of 6 inches and do not align with the established plumbing codes for the installation of such fixtures. The focus should remain on achieving an efficient and safe drainage system without unnecessary elevation of the plumbing components.