Kitchen sink drain size code. Yes i think the concern with lead is the contamination of incoming water more than outgoing. On a kitchen layout such you have i perfer 1 12 rather then 2 because you will get a better scouring action through the smaller pipe. Kitchen sink drain pipe repiped pvc piping plumbing tips. Is there a standard height for the rough plumbing of a kitchen waste pipe.
Plumbing code in commercial kitchens city of concord code administration 225 8580 dan clark plumbing inspector tedd evans chief building inspector. These drains like bathroom and kitchen drains use a p trap which is a j shaped pipe that connects to the main drain line. They connect to either a 1 14 inch or 1 12 inch tail pipe. Is 1 12 dia the correct size for a kitchen waste on a renovation.
A bar sink drain is slightly larger than a bathroom drain but smaller than a kitchen drain. Rust however is still a problem. Bar drains are 2 inches in diameter. According to the international residential code the maximum vertical distance between the sink drain and the entrance to the p trap is 24 inches.
It handles more heavy duty usage than bathroom sinks but not as much use as the kitchen sink. Over the years i have seen more 2 kitchen sink drain pipe stoppages compared to 1 12 drain pipes. However the universal plumbing code stipulates. 3 feet 6 inches under the upc.
But most drain cleaners dont contain lye any more and nobody in their right mind dumps 500f fluid into a sink. When installing a new kitchen sink drain or repairing an old leaking one you need a particular size drainpipe. When water empties from the kitchen sink it goes through a sometimes complex network of pipes before it gets to the main waste pipe which is typically in the wall. Anonymous user many plumbing codes permit 1 12 drain pipe and a 1 12 vent.
For the piping after the trap the irc requires 1 12 inch pipe while the upc requires 2 inch pipe. The maximum distance to the vent is 6 feet under the irc.