Sink Drain Pipe Size

Sink rough in details.

Sink drain pipe size.

This is the minimum size to use for building sewer or drain pipe that is connected to the toilet. Don t get confused with the hole size and the actual pipe size. The drain has a threaded pipe sticking out below the lock nut that secures the drain to the sink basin itself. Vertically both are about 2 to 3 inches above the drain pipe supply lines horizontal.

Other is 4 inches to left of centerline discharge hole vertical. A standard rule of thumb is that sewer pipes leading away from a toilet are 3 inches in diameter. Some older sinks may have drains that connect to a 1 1 4 inch tailpiece but most modern drains have a 1 1 2 inch outlet. The last size is 4 inch drain pipe that can be connected to 160 units in horizontal stack and 240 units in vertical stack.

Inside the pipe there should be 1 inches hole. The main sewer pipe leading to the septic tank or public sewer is usually 4 inches. For instance the minimum pipe diameter for a washing machine drain is pipe with a 1 1 2 inch diameter. All the pipes that connect to the tailpiece including the p trap assembly.

1 inch 25 4 mm. The drainpipe threads onto this pipe with a connector. The replacement piping shall be of the same nominal size as the existing piping. Does not include branches of the building drain refer to table 710 1 1.

Consider drain pipe to be the vertical centerline. The fourth size is 3 inch drain pipe that can be connected to 20 units in horizontal stack and 30 units in vertical stack. Stack diameters shall not be reduced to less than one half of the diameter of the largest stack size. Sewer drains from laundry sinks or washing machines are 2 inches in diameter and those from sinks in the kitchen bathroom or powder room generally use a 1 5 inch pipe.

One hole is 4 inches to the right of centerline. Compare the fixture to the minimum sizes of drainage pipe by fixture table. Since the pipe is 1 1 2 inch in diameter kitchen drainpipes are also 1 1 2 inches in diameter. Stacks shall be sized based on the total accumulated connected load at each story or branch interval as the total accumulated connected load decreases stacks are permitted to be reduced in size.