Bathroom Sink Drain Pipe Size Code

Vertically both are about 2 to 3 inches above the drain pipe supply lines horizontal.

Bathroom sink drain pipe size code.

Other is 4 inches to left of centerline discharge hole vertical. A single trap can service more than one sink but adjacent drains cannot be farther apart than 30 inches. According to most codes copper supply pipe must be supported every 6 feet galvanized or black steel pipe every 12 feet pvc or abs drainpipe every 4 feet and cast iron pipe every 5 feet. Below our tables 1 and 2 summarize common plumbing code specifications for fixture venting and vent pipe sizes and distances that a plumbing fixture can be located horizontally from the vent stack.

And toilet requires a drain pipe of 3 inches in diameter unless two toilets are on the same drain and. Plumbing codes for pipes make sure pipes are up to code by adhering to these guidelines. All bathroom sinks should be 4 inches from the side walls at minimum and should also have at least 21 inches of front clearance. To be safe install more supports than are required.

Measure 21 inches approximately above the finished floor. This size is precisely the diameter of the pipe instead of the length. One hole is 4 inches to the right of centerline. A drainage pipe that handles all three fixtures must be 2 inches in diameter since a 1 1 2 inch pipe can handle a maximum of only 4 dfu.

The trap can t have a larger diameter than the waste pipe into which it empties. The trap and tailpiece should have the same diameter which is generally 1 1 2 inches since the code specifies that diameter for the sink drain outlet. Tables of plumbing drain pipe vent pipe sizes critical distances to plumbing fixtures. About 16 to 20 inches above the floor.

You ll see these distances also in our sketch at left. However most of the bathroom sinks use 1 inch drain pipe. The hot line and cold line are spaced 8 inches apart from left to right. The bathroom sink s water lines are roughed in 3 inches above the drain.

When combined with a laundry tub the drain pipe must be a minimum of 2 inches in diameter. From the center of the drain measure 4 inches to the left and 4 inches to the right. There are minimum clearances and spaces that are determined by local regulators. However the universal plumbing code stipulates.

2 separate sinks built next to each other also have to have a spacing of 4 inches or more. Sink rough in details. A sink represents 1 dfu which requires a 1 1 2 inch drainage pipe and a bathtub and shower each represent 2 dfu.