Standard Toilet Drain Size

The most important of these measurements is the distance between the floor drain and the wall called the rough in.

Standard toilet drain size.

In most homes pvc drain pipe is used instead of metal pipe. But most residential floor mount toilets require one foot 305 mm drain placement from the back wall. Standard toilet sewer pipe sizes. I d say 80 of toilets have a 12 rough in so don t be surprised if you do as well.

Ideally 8 1 4 inches above the floor. However it s useful to know that toilet s also come in. Toilet rough in. Standard toilet rough in common rough in sizes the standard toilet rough in is 12.

The standard size for a toilet drain pipe is 3 inches in diameter but drains up to 4 inches in diameter are often used. Local codes may call for a 4 inch main drain and some plumbers prefer to run larger vent pipes. These plans call for 3 inch diameter pvc pipe for the main drain and the short length leading from the toilet to the drain and 2 inch pvc for the other drain lines and the vents. The drain pipe connects to the flange which mounts the toilet itself and this flange is usually built to connect to 3 inch schedule 40 toilet drain pipe.

12 inches is the most common toilet rough in size. This information can be found on the toilet s specification sheet. Measured from centerline running vertically through the center of the toilet supply line hole should be 6 inches to the side of centerline. Cold water only pipe creates one hole between 5 and 10 inches above the floor supply line horizontal.

There are however other rough in sizes. Always check local plumbing codes before you begin a plumbing project. 10 and 14 are also possible and you ll have a smaller selection of toilets that fit those sizes. Toilet rough in details.

It s important to know that this measurement is for standard toilets with a 12 rough in. Distance between finished wall and center of a floor drain or rough in might be 10 12 or 14 depending on toilet type. What size are toilet waste drains. Waste drain pipes for toilets in modern plumbing systems are either 3 inches or 4 inches in diameter.

The wider the pipe the more waste it can move and the. Check toilet to confirm location water supply connection.