How do you vent a toilet sink and shower?

The most common configuration is to feed 2″ PVC down from the ceiling within the wall behind the toilet. The vent pipe connects into the toilet drain pipe. The sink drain pipe and the tub/shower drain pipe are vented with 1.5″ pipe that branches off from the 2″ PVC mainline.

How to vent a bathroom toilet?





Quote from the video:
Quote from Youtube video: Right under the center of our plumbing wall the discharge side connects to the building drain further downstream. This way then we've got a two inch street forty-five here for the vent.

Can you vent a shower and toilet together?

Wet vents are typically used when plumbing a bathroom group. So yes the shower can also be vented by the wet vent along with the toilet. There is one major stipulation when wet venting multiple fixtures when a toilet is one of them: the toilet must be the last fixture connected to the wet vent.

Can a toilet and shower share the same drain?

The general answer is that the showers and toilets can use the same drain, but they should not be sharing the same waste trap arm. There are other factors to consider as well, such as whether your drains lead to the main sewer line, or if there are septic tanks that are used in your city or town.

How far away can a vent pipe be from a toilet?

6 feet





According to the UPC, the distance between your trap and the vent should be no more than 6 feet. In other words, for the vent to work properly, it needs to feed into the drain line within 6 feet of the trapways that connect to it.

How far can a vent be from a shower drain?

The connection between the fixture drain and the horizontal drain and vent pipe is the only vertical pipe of a combination drain and vent system. 8 feet is the maximum vertical distance.

Do you need a vent pipe for each toilet?

“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.

Does each fixture need its own vent?

Every plumbing fixture must also have an attached vent. Without a vent, negative pressure from water leaving the system can cause a siphon which empties the trap. The top of stacks must be vented too, via a stack vent, which is sometimes called a stink pipe.

Can I wet vent a toilet?



A wet vent can handle all the fixtures in two bathroom groups (a bathroom group is a lav, toilet, bidet, and tub or shower). To stay out of trouble with wet vents, go beyond code and use a 4-in.

How do you plumb a toilet in a shower?

Quote from the video:
Quote from Youtube video: Over right where the center of the toilet's going to be so i'm actually about a little over 15 inches to where the toilet's going to be from this shower base.

Does plumbing vent go before or after trap?

We must always keep the vent connection above the trap weir to prevent siphoning and keep proper pressures on both side of the trap.

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′′.

How high does a toilet vent need 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.

Can a sink and shower share a vent?

You can put the sink drain into the shower drain. 2. If the vent is less than 5 feet from the other fixture, they can share it.

Can a tub and toilet share the same vent?

1.5″ pipe can not serve as wet vent on a toilet and max 2 fixture units. A 2″ pipe can serve a toilet and a maximum 4 fixture units draining into it. (Sinks, tubs, showers all have 1.5 fixtures units each). As a general rule, you will just be able to vent 2 fixtures on a toilet wet vent.

Can you vent toilet with sink vent?



Quote from the video:
Quote from Youtube video: Question how far can a vent be from a toilet. The answer to this question depends on your local plumbing code the toilet's trap arm also referred to as the fixture. Drain is the pipe between the trap.

Can a shower and sink share a drain?

1:Can multiple bathroom sinks, baths, showers ect share a common drain pipe ? Yes they can and do all the time.

Does shower need its own vent?

Without a vent, your shower won’t drain correctly. While a shower usually requires a 2-inch drain pipe, the vent pipe must be either 1 1/2 inches or 2 inches depending on local requirements. Be sure to double check this to see what the code is in your area. There are a couple of ways to run a shower vent.

Do I need a vent for every drain?

Without getting too far into building science, a general plumbing rule of thumb is that every drain needs a trap, and every trap needs a vent. All those traps and drains are designed to prevent sewer gas from entering your home.

How far from drain should vent be?



For a 1 ½-inc pipe the vent should be 42 inches away at the most while a 2-inch pipe must have a maximum distance of 5 feet. For pipes that have a diameter of 3 inches the distance is 6 feet and for a 4-inch pipe the most it should be away from the vent is 10 feet.

How far can vent be from toilet?

6 feet

According to the UPC, the distance between your trap and the vent should be no more than 6 feet. In other words, for the vent to work properly, it needs to feed into the drain line within 6 feet of the trapways that connect to it.

How far can a vent be from a shower drain?

The connection between the fixture drain and the horizontal drain and vent pipe is the only vertical pipe of a combination drain and vent system. 8 feet is the maximum vertical distance.