Toilet Drain Size

There are however other rough in sizes.

Toilet drain size.

However some homes may have a smaller drain pipe diameter. This is a standard size pipe for toilet drains in most homes and all main drain stacks usually consist of 4 inch diameter pipe. Standard toilet rough in common rough in sizes the standard toilet rough in is 12. Toilet fitting sizes flush valve drain hole sizing in most cases for 2 inch toilets this will result in a drain hole size in the range of 2 3 8 to 2 3 4 and so the flange and gasket combinations on our 2 dual flush valves will fit and seal this size range effectively.

A toilet is considered as six units because of how much water it discharges at once. 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 number of units on one drain pipe helps to calculate the size of pipe needed. What size are toilet waste drains.

Slope this pipe at 1 8 inch per foot grade to the main drain stack. I d say 80 of toilets have a 12 rough in so don t be surprised if you do as well. Main toilet drain or stack 4 inch pvc or iron pipe. Cold water only pipe creates one hole between 5 and 10 inches above the floor supply line horizontal.

Ideally 8 1 4 inches above the floor. Local codes may call for a 4 inch main drain and some plumbers prefer to run larger vent pipes. Check toilet to confirm location water supply connection. Some homes may use a 3 inch stack.

10 and 14 are also possible and you ll have a smaller selection of toilets that fit those sizes. Measured from centerline running vertically through the center of the toilet supply line hole should be 6 inches to the side of centerline. The drain line leading from the closet bend to the drain stack is 4 inches in diameter. Waste drain pipes for toilets in modern plumbing systems are either 3 inches or 4 inches in diameter.

Toilet rough in details.