Bathroom Sink Water Pipe Size

Use this chart to count the number of fixture units that will be connected to a drain line and for the minimum drainpipe size.

Bathroom sink water pipe size.

Toilet rough in details. A standard one bath home with kitchen sink dishwasher water heater clothes washer 1 6 tank toilet lavatory tub shower combo and two hose bibs would be counted as 18 fixture units. What is the standard weight of a bathroom sink. Check local building codes.

Are all bathroom sink drains the same size. The 1 2 inch supply pipes that come to the sink each terminate with a shutoff valve and this valve is one of the two factors that determine the connector size on the faucet hose. However most of the bathroom sinks use 1 inch drain pipe. Weight depends on the material and its overall size.

Measure 21 inches approximately above the finished floor. When combined with a laundry tub the drain pipe must be a minimum of 2 inches in diameter. The size of the bathroom sink drain goes from 1 1 4 inches 32mm to 1 1 2 inches 40mm. If a toilet connects to a drainpipe the pipe must be at least 3 inches.

Most standard two bath homes consisting of kitchen sink dishwasher water heater clothes washer two 1 6 tank toilet two lavatories one shower one tub. Ideally 8 1 4 inches above the floor. Plumbers conform to this standard whether installing. Cold water only pipe creates one hole between 5 and 10 inches above the floor supply line horizontal.

The inlet must match the supply pipe and it can be a 1 2 inch female pipe thread fpt connector for galvanized pipes a 1 2 inch compression or sweat connector for copper pipes or a 1 2 inch barbed connector for pex pipes. 1 1 4 inches is the general standard and 1 1 2 inches and 1 3 5 inches are commonly used. Check toilet to confirm location water supply connection. Pipe size the pipe stub outs under your sink are branch pipes that connect to 3 4 inch main pipes and they always have a diameter of 1 2 inch.

From the center of the drain measure 4 inches to the left and 4 inches to the right. The bathroom sink s water lines are roughed in 3 inches above the drain. This size is precisely the diameter of the pipe instead of the length. Moving over to the toilet.

The hot line and cold line are spaced 8 inches apart from left to right.