Does a toilet need a soil stack?

Asked By: Gianella Meester | Last Updated: 11th January, 2020
Category: home and garden home appliances
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A Saniflo is normally installed in a domestic property where there is no mains drainage pipe available. This means you can have a toilet anywhere, without worrying about mains drainage. A Saniflo macerator allows you to install a toilet up to 150 feet from your main drainage pipe.

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Accordingly, do all toilets need a soil stack?

Both soil and waste pipes will run from your toilet, sinks, shower, washing machine, urinal, bidet and any appliance that voids water and join the soil stack. The stack will run directly into your underground drain.

Also Know, how far can toilet be from soil stack? If the waste line is 4 inches in diameter, the toilet can be as far as 10 feet from the stack. Maintaining these critical distances ensures the stack can handle the new toilet.

Similarly one may ask, do I need a soil stack?

Every fixture is required to have an internal or external trap; double trapping is prohibited by plumbing codes due to its susceptibility to clogging. Through traps, all fixtures are connected to waste lines, which in turn take the waste to a "soil stack", or "soil vent pipe".

What is a toilet stack?

The stack is called a "drain" stack below the highest point at which waste drains into it. It is a "soil" stack below the point where it accepts the drainage from water closets (toilets), urinals, or clinic sinks (you get the drift, politely.). It is referred to as a "vent" stack above the highest drain.

39 Related Question Answers Found

What happens if toilet is not vented?

If there is not enough air pressure from the vent in the drain pipes, this water can be lost. Empty toilet bowls — If toilets do not refill after flushing, or if the level of water in the bowl or tank rises or falls suddenly, it could indicate venting problems in the drains.

Can a soil pipe be inside house?

A soil vent pipe is a pipe that take all the waste from the toilet, bath, basin, sink and all other types of soil wastes to an allocated drain but also vents above the house in a safe way to make sure there are no un-wanted fumes and gases.

How high should a soil stack be?

Building regulations state that the opening of ventilating pipes should be located at least 900mm above any window in a building that is within three metres of the pipe.

Does a vent stack have to go straight up?

Normally they run level or plumb, unless there is an obstacle to work around. 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.

What's the difference between GREY and brown soil pipe?

Grey pipe is UV stabilised so can be used where it is exposed to daylight. Brown is intended for undergound use.

What is the difference between a soil stack and a waste stack?

Waste Stack:
The only difference between two is soil stack discharge wastewater from commode and urinal only whereas, a waste stack discharge wastewater from basins, showers, sinks, etc (without commode and urinals). A waste stack is also installed vertically along the building near the toilets.

Does a toilet need to be vented?

Does a toilet need a vent?” And the answer is yes, your toilet has to have a vent. And the size of this vent pipe depends on your local plumbing code. If your code is the IPC, then your toilet's individual vent is sized at 1.5.”

Can two toilets share 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.

Where is my soil stack?

Your soil pipe is either going to be located above your roof, or on the side of your property. The older pipes, the ones that are made of cast iron, are the ones that tend to protrude from the roof. More modern, plastic ones are often located on the side of the building, branching out in a tree-like shape.

What is a soil or waste stack?

The soil stack is the large-diameter main vertical waste pipe or building drain, or vertical portion of the "main drain" in the building. The waste stack pipe shown in the sketch refers to any other vertical drain piping in the building that does not carry soil (sewage) from a sanitary fixture (toilet).

Do soil pipes have to be vertical?

Soil vent pipe. A soil vent pipe (SVP), also known as a soil stack pipe, drain-waste-vent or ventilated discharge pipe, is typically a vertical pipe that removes sewage and greywater from a building. If a downward slope is not possible, a collection pit with a 'sewage ejector' pump can be installed.

Can toilet waste pipe run under floor?

Soil pipes are generally located on an outside wall and enter the bathroom as close as possible to the toilet location. They can be mounted on the floor, but usually pipes run below the floor in-between the floor joists. Running this pipe from one end of the house to the other simply is not practical.

Do toilets and sinks drain to the same place?

Bathrooms usually have more than one plumbing fixture, and it's inconvenient and expensive to run individual drain lines from each fixture to the house's main sewer line. The toilet has the largest drainpipe, so the sink drain, which is smaller in diameter, will empty into the toilet drain line.

Can soil stack have bends?

Bends. Bends at the base of stacks should be of long radius. Two 45° bends may be used as an alternative. The same principle should be used for offsets.

How does a toilet stack work?

The stack is considered a main drain line. It collects and distributes wastewater from all those smaller pipes to the main house drain. Your waste water then travels to the house sewer, the city sewer line, then to the public sewer treatment facility.

What is a toilet vent pipe?

Plumbing vents are pipes that extend from the waste pipes to the outside of the building, often going through the roof. The vent pipes allow the sewer gases to escape to the outside, rather than being released inside the house. The vent pipes also allow oxygen into the waste pipes.

Can a shower and toilet share the same drain?

Your shower drain can connect to the toilet drain, but it cannot connect to the toilet trap arm. This means that the shower connection will need to be made downstream from the toilet vent. The vent must also come off the 2" pipe vertically, can't come off the side unless you have a lavatory draining into the vent.