Can you use a 90 degree elbow on a toilet drain?

All change-of-direction fittings buried under a slab should never have any 90-degree fittings. If you need to change direction under concrete or other buried piping conditions say in a sewer line, you use two 45-degree fittings. It's a best practice to separate the 45-degree fittings by at least 6 inches, if possible.
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Can I use 90 elbow at toilet drain?

It's fine to have a larger-radius (sweep) 90-degree bend at the base of a vertical drainage stack where the wastewater starts to travel horizontally.
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What kind of elbow do you use for a toilet?

Its name relates to “water closet,” a term used by plumbers to mean the commode. A closet bend is a 90-degree toilet elbow fitting, but it doesn't form a sharp angle. Instead, the closet bend has a gradual, sweeping corner that allows waste to flow through the bend without clogging.
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Can you use a vent elbow for a toilet?

If the toilet drain does not connect directly to a vent, you must find another way to vent it. If the drain line runs away from the wall where you want the vent, use a reducing Y and a 45-degree street elbow to point the vent line toward the wall. The horizontal vent pipe runs right next to the closet bend.
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What angle does a toilet drain need to be?

The ideal slope of any drain line is ¼ inch per foot of pipe. In other words, for every foot the pipe travels horizontally, it should be dropping ¼ inch vertically.
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How to make a toilet flange fit a new floor when the drain is a 90 degree elbow made from copper



Can a toilet drain have a vertical drop?

Vertical Drop

When the toilet drain reaches a vertical wall, it drops straight down between wall studs. Although this is a vertical drop, don't use standard 90-degree plumbing elbows, called "hard 90s," to connect the pipes. The sharp corners on these elbow fittings can increase the risk of clogs.
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Can a waste pipe have bends?

A toilet drain can have bends. It's recommended to avoid having a 90-degree bend as this will lead to blockages and unwanted damage. Instead, it's best to restrict the bend to 45-degrees and then place a straight pipe before adding another 45-degree bend.
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Can toilet vent have bends?

One should avoid bends and turns in the vents to ensure that there is no possibility of a trap. If it is being placed horizontally, ensure that it is at an angle no more than 45 degrees. Essentially, the vent pipe needs to be dry at all times.
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Can plumbing vent pipe have 90 degree turns?

The 90's or 45's used to attach to the plumbing vents do not cause vapor locks if the plumbing vent is at the proper 90-degree straight essential for proper venting.
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How long can a toilet waste pipe be?

IIRC it is permissible (but inadvisable) to go as low as 18mm per metre, the maximum is 90mm per metre. As long as the pipe have at least 15% downhill slop from Toilet to main waste pipe it would be ok. Any distance up to 3m do not require extra joining points as standard 4inch waste pipe is 3m long.
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Can you put a bend in underground drainage?

You can also buy an adjustable bend for awkward angles or just for ease. Drainage Pipe Junctions – The allow the pipe run to be split into two different runs, or to join two different runs into one. They come as a T junction (a 90 degree turn) or a Y junction (a 45 degree turn).
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Does a toilet have to be vented?

“Does a toilet need a vent?” And the answer is yes, your toilet has to have a vent. For more information on the great importance of plumbing vents, read our plumbing vent article here. And the size of this vent pipe depends on your local plumbing code.
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Can you vent a toilet with a 2 inch pipe?

Toilet Vent Pipe Size? It's typically recommended that you go with a 2" PVC pipe for the vent. This is according to the uniform plumbing code (UPC). It may not be enough, depending on how many fixtures you are trying to run off the vent.
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Can a toilet vent run horizontal?

There is no problem with running your vent pipes horizontally as long as you remember that there should be a minimum clearance of 6 inches above the spill line. What is a spill line? This is the level where the water starts to overflow from the rim of the sink, toilet, or tub.
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Is 3 inch pipe OK for toilet?

The standard size for a toilet drain pipe is 3 inches in diameter, but drains up to 4 inches in diameter are sometimes used. Typically, 3-inch pipes carry the water to the toilet, but a 4-inch pipe may be used to move wastewater out of a house to a sewer or septic tank.
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Can a toilet vent be angled?

Vent pipes must be installed so they stay dry. This means that they should emerge from the top of the drainpipe, either straight vertically or at no less than a 45-degree angle from horizontal, so that water cannot back up into them.
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Can a toilet and sink share a vent?

A general rule is that you can only vent 2 fixtures on a toilet wet vent. The sink drain has a toilet vent through it. The toilet drain should be 3′′, the sink drain is 1.5′′, the shared sink drain/toilet vent area should be 2′′, and the vent going up should be 1.5′′.
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How high does a toilet vent have to be?

The International Plumbing Code (IPC), requires plumbing vent pipes to extend vertically at least 152 mm (6 in.) above a roof, per Section 905.5, "Vent Connections and Grades." Additionally, vent pipes must be at least 305 mm (12 in.) away from a vertical surface.
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What is the best size pipe for a toilet drain?

A three-inch pipe is what's used in homes to pipe toilets. The four-inch pipe is used as the building drain under floors or in crawlspaces to transport all the wastewater from a home out to the septic tank or sewer. The four-inch pipe may also be used in a home if it's capturing two or more bathrooms.
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Can a sewer line be too steep?

A slope that is too steep will cause the liquids to run faster than the solids, leading to clogs. A slope that is too shallow does not create enough velocity for proper drainage.
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Why do drains have elbows?

To prevent sewer gasses from entering your living space. The pipe bend known as the trap ensures that there is a water seal separating the sewage system from the inside of your home. Like the rest of the wastewater system, it relies on gravity to keep the water within the bend.
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