Molly Ayala
When installing electrical, plumbing, or gas systems in buildings, pipes are often run behind walls, under floors, or underground. A stub-out refers to the portion of a pipe that extends beyond the wall, floor, or ground surface and is left exposed, ready to be connected to a fixture or device. These stub-outs are typically capped until they are ready to be connected and their positions are carefully planned to correspond with the placement of the fixtures or appliances they will be linked to.
| Characteristics | Values |
|---|---|
| Definition | The exposed portion of a pipe installed during a plumbing, electrical, or gas rough-in that is ready for connection to a fixture or device |
| Position | Extends past the wall, floor, or ground |
| Capping | Usually capped until it's time to connect it to a fixture or device |
| Planning | Positions are carefully planned to correspond to the placement of the fixtures or elements to which they will be connected |
| Length | Typically 3 to 6 inches long, with flexibility to cut to the necessary length |
| Material | Often made with copper pipe, even when the water system uses PEX tubing |
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What You'll Learn
- Stub-outs are capped pipe ends sticking out from walls, floors, or trenches
- They are installed during the rough-in phase of remodelling or new construction
- Stub-outs are typically 3 to 6 inches long, with some extending up to 10 inches
- They are made with copper pipe or PEX tubing and soldered with a cap or valve
- Stub-outs are planned to correspond to the placement of fixtures or elements they will connect to
Stub-outs are capped pipe ends sticking out from walls, floors, or trenches
A stub-out is the exposed portion of a pipe that is installed during the plumbing, electrical, or gas rough-in phase of a remodel or new construction. During this phase, pipes are run behind walls, under floors, or underground to provide buildings with water, drainage, electricity, or gas services. The portion of the pipe that sticks out from a wall, floor, or trench is known as a stub-out. These are usually capped until they are ready to be connected to a fixture, such as a faucet, drain assembly, electrical device, or gas appliance.
The positioning of stub-outs is carefully planned to correspond to the placement of the fixtures or elements to which they will be connected. For example, water stub-outs are needed for sinks, showers, bathtubs, and toilets, while drain stub-outs are required for sinks and sometimes showers. Drain stub-outs for toilets, bathtubs, and showers placed on concrete slabs usually extend 6 to 10 inches above the slab, and they are cut to the proper length when the fixtures are installed.
Plumbers have different preferences for the ideal length of a stub-out, but most make them between 3 and 6 inches long. This allows for flexibility in cutting or lengthening the stub-out as needed during installation. Many plumbing water stub-outs are made with copper pipe, even when the water system uses PEX tubing. Plumbers typically solder a cap or valve to each stub-out or install a valve with a compression fitting.
In summary, stub-outs are an essential part of the plumbing, electrical, or gas rough-in process, ensuring that pipes are easily accessible for future connections to fixtures or devices. The careful planning and installation of stub-outs contribute to the overall functionality and efficiency of a building's utility systems.
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They are installed during the rough-in phase of remodelling or new construction
A stub-out is the exposed portion of a pipe or electrical conduit that is installed during the rough-in phase of remodelling or new construction. This phase involves running pipes and conduits through the framing of a building before the walls and floors are finished. The stub-out extends past the wall, floor, or up from the ground, and it is left accessible to facilitate future connections to fixtures or devices. For example, in plumbing, stub-outs are made for water supply and drainage pipes, ensuring they are long enough to be connected to faucets, toilets, or drains.
The rough-in process for electrical work involves installing electrical conduits in the framing before the walls and floors are completed. Electrical stub-outs are the portions of these conduits that extend beyond the wall or floor and are left exposed to enable future connections to electrical devices. These stub-outs are typically capped until they are ready to be connected.
During the rough-in phase, plumbers, electricians, and gas fitters work together to ensure the pipes and conduits are correctly positioned to correspond with the placement of fixtures or appliances. The stub-outs are carefully planned to ensure they are accessible and can be easily connected when needed. This planning takes into account the specific requirements of each fixture or device, such as the need for shut-off valves or check valves in plumbing systems.
The length of a stub-out can vary depending on the trade and specific application. For plumbing stub-outs, the length is typically between 3 and 6 inches, allowing plumbers to cut the stub-out to the necessary length during fixture installation. Electrical stub-out lengths may vary based on similar considerations, ensuring sufficient length for safe and proper connections.
Overall, stub-outs play a crucial role in the rough-in phase of construction or remodelling projects. They ensure that the necessary infrastructure for plumbing, electrical, and gas services is in place while providing flexibility for future connections to fixtures and devices. This process streamlines the installation of essential utilities and helps maintain the accessibility and functionality of these systems within buildings.
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Stub-outs are typically 3 to 6 inches long, with some extending up to 10 inches
A stub-out is the exposed portion of a pipe that is installed during the rough-in phase of a remodel or new construction. It is the part of a plumbing, gas, or electrical pipe that extends past the wall, floor, or ground surface and is left ready for connection to a fixture or device. The rough-in process involves running pipes behind walls, under floors, and underground to provide buildings with essential services such as water, drainage, electricity, and gas.
The length of stub-outs can vary depending on the application and the preferences of the plumber or electrician. Typically, stub-outs are 3 to 6 inches long, providing enough length to make the necessary connections. This length also allows for flexibility during installation, as it can be cut to the exact size required. Having a stub-out that is too short can be more challenging to work with, as it would need to be lengthened.
In some cases, stub-outs can extend up to 10 inches or more. For example, drain stub-outs for toilets, bathtubs, and showers placed on concrete slabs usually extend 6 to 10 inches above the slab. The extra length is necessary to facilitate proper connections and ensure the drain pipes are installed correctly. The longer stub-out length for these fixtures is due to the specific installation requirements and the need to access the pipes for future maintenance or repairs.
The positioning of stub-outs is carefully planned to correspond with the placement of the fixtures or devices to which they will be connected. For example, in plumbing, stub-outs are positioned to align with sinks, showers, bathtubs, and toilets, ensuring that the water and drain pipes can be securely attached. Similarly, in electrical work, stub-outs are strategically placed to provide power to specific areas or equipment within a building.
The length of a stub-out is an important consideration in any construction or remodelling project. While the standard length of 3 to 6 inches is common, there are situations where a longer stub-out is required. By understanding the specific requirements of each project, plumbers and electricians can determine the appropriate stub-out length to ensure successful and efficient installations.
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They are made with copper pipe or PEX tubing and soldered with a cap or valve
A stub-out is the exposed portion of a pipe that is installed during a plumbing, electrical, or gas rough-in, ready for connection to a fixture or device. In the context of electrical work, a stub-out refers to the part of an electrical conduit that extends past a wall, floor, or ground surface.
During the rough-in phase of construction or remodelling, plumbers, electricians, and gas fitters run pipes and conduits behind walls, under floors, and underground. These pipes and conduits are typically hidden once the walls and floors are finished. However, the stub-outs, or the ends of the pipes, remain accessible and protrude from the wall, floor, or trench.
Stub-outs are typically made with copper pipe or PEX tubing. They are usually soldered with a cap or valve to seal the pipe until it is ready to be connected. The length of a stub-out can vary, but it is typically between 3 to 6 inches long, allowing plumbers or electricians to cut it to the necessary length.
The positioning of stub-outs is carefully planned to correspond with the placement of the fixtures or devices to which they will be connected. For example, in plumbing, water stub-outs are used for sinks, showers, bathtubs, and toilets, while drain stub-outs are used for sinks and sometimes showers. Each water pipe is connected to its own shut-off valve, and the stub-out must be long enough to facilitate these connections.
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Stub-outs are planned to correspond to the placement of fixtures or elements they will connect to
A stub-out is the part of a pipe or electrical conduit that extends past a wall, floor, or from the ground, ready for connection to a fixture or device. The position of stub-outs is carefully planned to correspond with the placement of the fixtures or elements to which they will be connected. This is done during the rough-in phase of a remodel or new construction, where pipes and conduits are installed in the framing before the walls and floors are finished.
The rough-in process for plumbing involves running pipes through wall cavities, connecting drain lines to sewers, and installing check valves, water shut-off valves, and other necessary components. This results in water stub-outs for sinks, showers, bathtubs, and toilets, as well as drain stub-outs for sinks and sometimes showers. The placement of these stub-outs is planned to align with the fixtures they will connect to. For example, a sink will have two water stub-outs and a drain stub-out that usually extends from the wall. Toilets, bathtubs, and showers on concrete slabs will have drain stub-outs that extend 6 to 10 inches above the slab, ensuring they can be cut to the proper length when the fixtures are installed.
Similarly, in electrical work, stub-outs are planned to correspond to the placement of electrical devices or appliances. For example, an electrical stub-out may extend through a wall to connect to a light switch or outlet. The length of the stub-out is important to ensure a proper connection. Plumbers and electricians may have different preferences for the ideal length, but most stub-outs are made from 3 to 6 inches long to allow for adjustments during installation.
The careful planning of stub-out placement ensures that the pipes or conduits can be easily connected to the appropriate fixtures, devices, or appliances. This planning takes into account the specific requirements of each fixture and the overall layout of the building to ensure a functional and efficient plumbing, electrical, or gas system.
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Frequently asked questions
A stub-out is the part of an electrical conduit that extends past a wall, floor, or from the ground and is ready to be connected to an electrical device.
Stub-outs are necessary to provide buildings with electricity, water, drainage, and gas services. They are usually capped until they are ready to be connected to fixtures.
Plumbers have different preferences, but most stub-outs are between 3 and 6 inches long. This allows for flexibility in cutting the stub-out to the required length.
Many plumbing water stub-outs are made with copper pipes, even when the water system uses PEX tubing.
The rough-in phase involves installing water and gas pipes and electrical conduits within the framing before the walls and floors are finished. The stub-out is the portion of the pipe that extends from the wall, floor, or trench during the rough-in phase, ready for connection.
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