Floor Drain Requirements

If you install a larger floor drain you need to install a larger trap as well.
Floor drain requirements. For a floor drain the minimum trap size is 2 inches. Most floor drains are designed with a feature called a p trap because it is shaped roughly like the letter p turned on its side. These floors must be graded to drain effectively and the wall and floor junctures must be coved. The drain must connect to a trap that blocks the gas by catching water in a curving section of pipe creating an airtight barrier.
If allowed by law a warewashing machine may have a direct connection between its waste outlet and a floor drain when the machine is located within 1 5 m 5 feet of a trapped floor drain and the machine outlet is connected to the inlet side of a properly vented floor drain trap. Second good floor drains are typically designed to keep unpleasant odors from entering the restroom through the drain. Floor surfaces must be smooth nonabsorbent and easy to clean. When retrofitting a drain you will likely need to remove the wall covering over the old drain make the repairs or changes and put new wall coverings in place.
For a long time the plumbing codes have had requirements for the location and size of openings in the drainage pipes to allow drain cleaning machines to have access to the drainage piping. 2014 fbc building 5 th edition 4 special detailed requirements based on use and occupancy 453 state requirements for educational facilities 453 16 plumbing 453 16 9 kitchens 453 16 9 2 floor drains. When designing sanitary or storm drainage systems it is important for the design professional to think about how the drainage system will be maintained. This feature is simply an elbow in the drain pipe that fills with water.
All components of a washing machine drain should be installed before the wall and floor finishes are applied.