It depends on the plumbing code in your area. Where I live you’d need a permit to do something like this. Every fixture requires a minimum waste and vent pipe size, and adding more fixtures to a branch or stack could call for an increase in the diameter of those pipes.
Can two toilets share the same stack?
Most houses have more than one toilet, and if they are on the same side of the house, their waste lines can usually tie into the same stack. If they are on opposite sides, however, each may need its own stack. Since the stacks must be vented, this would mean two vent openings on the roof.
Does each toilet need its own stack?
“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.
Can one toilet clog another toilet?
If two toilets on the same floor of your house seem clogged, then you may have a drain line blockage. The drain line is the one line that the other drains will feed into. This problem would cause more than one plumbing fixture to back up. It’s also why you can’t fix it with a good un-clogging.
How far can a toilet be from the main stack?
2. Tie the waste line from the new toilet directly into the stack if the toilet is within six feet of the stack and the waste line is 3 inches in diameter. If the waste line is 4 inches in diameter, the toilet can be as far as 10 feet from the stack.
Can you put two toilets one pipe?
You need to split the levels, or possibly use a Y-structure & AAV valves on each unit, toilets, shower, sink.
Can you have two toilets back to back?
Proper Double Fitting For Bulk Flush Toilets
Homes built before 1965 may use a double sanitary tee to accommodate drainage from two toilets that are installed back-to-back. The double tee may not be effective for installations using bulk performance flush toilets (Pressure Lite®, Class Five®, and Class Six®).
How do you vent a second 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.
Are cheater vents legal?
Sometimes called “cheaters,” these tubular, spring-loaded $5 vents are rated for only 1/2 DFU (drainage fixture unit), and are not allowed under most building codes.
How long can 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.
How far can you run a toilet waste pipe horizontally?
The toilet can be as far as 10 feet from the stack if the waste line is 4 inches in diameter. The stack can handle the new toilet if the critical distances are maintained.
What is the difference between vent stack and stack vent?
A vent stack is a vertical pipe that is only used for venting, and runs upward from the drain piping to the open air outside the home. Vent stacks are primary vents and accept connections from other vents in a plumbing system. A stack vent is used for both drainage and venting.
How expensive is it to move a toilet?
Cost of Moving Plumbing Fixtures
The cost to move a toilet or sinks can be $2,500-$3,500 per fixture. Plumbing can be a significant cost factor in a remodel when a bathroom floor plan is altered. The toilet is the most expensive to move.
How many toilets can drain into 4 pipe?
3 tank-type toilets, one urinal, 4 sinks.
How many toilets can you have on a 3 inch line?
Quote from the video:
Quote from Youtube video: And two toilets. You can always add a third one. And if you have one bathroom in your house with a three inch line you can always add two more now what exactly is a three inch drain.
How many bathrooms can fit in a 3 inch pipe?
As a horizontal branch 3″ is good for 20 DFU’s or 4 bathroom groups.
How many toilets can be on a 3 vertical stack?
There is one answer. The International Plumbing Code requires 5 Drainage Fixture Units in a bathroom group. It’s good for 20 DFU’s or 4 bathroom groups.
Can a toilet and a sink share the same drain?
If you cannot connect the sink drain to the toilet drain within 6 feet of the toilet, install a separate vent on the toilet drain line closer to the toilet. The farther the sink connection from the toilet, the more likely you are to experience clogs. The sink will still need a separate vent pipe.
Should toilet drain be 3 or 4-inch?
In new construction, 4-inch drains can be installed from every toilet, or you can run a 3-inch drain line from a toilet to the home’s main 4-inch drain pipe — the line running from the house to the sewer or septic system. Older homes may have only 3-inch drains, so that’s what you have to work with.
What is the proper slope for a toilet drain?
¼ inch per foot
Improper drain slope
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.
What happens if a toilet is not vented?
Poorly-vented drain lines will not be able to effectively move wastewater and solid waste out of your building. This could lead to problems such as overflowing drains, backed-up toilets, and similar plumbing issues.
