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Old 04-15-2013, 08:51 AM   #16
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Waste-vent stack


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Now if you have fixtures that are a long distance from each other is it normal to have more than 1 waste/vent stack?
Normal? If the construction and layout of the house permits a 2nd stack ok

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Old 04-15-2013, 08:56 AM   #17
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Waste-vent stack


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This is a forum, correct? .
Yes.


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Is it illegal to ask these questions?
No.


Is there something you are concerned with pertaining to waste stacks?
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Old 04-15-2013, 02:23 PM   #18
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Waste-vent stack


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Yes.




No.


Is there something you are concerned with pertaining to waste stacks?
I was just curious if a house sometimes has more than 1 waste/vent stack running from roof to basement? I know houses sometimes have more than one vent stack through the roof but I'm referring to a waste/vent stack.
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Old 04-15-2013, 02:51 PM   #19
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Waste-vent stack


Yes a house can. If a house has one bathroom or two close together or above & below each other then it will most likely have one main easte/vent stack. Now if you have two or more bathrooms that aren't very close together - no matter how many stories - it may have two or more waste/vent stacks.
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Old 04-15-2013, 04:34 PM   #20
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Waste-vent stack


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Yes a house can. If a house has one bathroom or two close together or above & below each other then it will most likely have one main easte/vent stack. Now if you have two or more bathrooms that aren't very close together - no matter how many stories - it may have two or more waste/vent stacks.
Thank you. And the extra waste/vent stack will eventually tie into the main stack at the lowest point or will it normally just go into the slab then join the main drain leading to the sewer or septic?
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Old 04-15-2013, 04:54 PM   #21
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Waste-vent stack


It would normally tie into the main drain leading to the sewer. That's what makes it a waste/vent stack, the fact that it goes directly into your final drain line - if you tie lines into a waste/vent stack then those lines wouldn't be a 'stack'.

Plumbers, correct me if I'm wrong w/ my terminology. Thanks

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Old 04-15-2013, 05:32 PM   #22
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Waste-vent stack


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It would normally tie into the main drain leading to the sewer. That's what makes it a waste/vent stack, the fact that it goes directly into your final drain line - if you tie lines into a waste/vent stack then those lines wouldn't be a 'stack'.

Plumbers, correct me if I'm wrong w/ my terminology. Thanks
You asked for it
Main drain is the building drain and is the lowest point of the plumbing that drains by gravity.

A stack is the vertical pipe that exceeds 10 foot. A waste stack carries sewage. A vent stack carries air.

A waste stack vent is a plumbing venting method allowed under the IPC

STACK. A general term for any vertical line of soil, waste, vent or inside conductor piping that extends through at least one story with or without offsets.

STACK VENT. The extension of a soil or waste stack above the highest horizontal drain connected to the stack.

STACK VENTING. A method of venting a fixture or fixtures through the soil or waste stack.

BUILDING DRAIN. That part of the lowest piping of a drainage system that receives the discharge from soil, waste and other drainage pipes inside and that extends 30 inches (762 mm) in developed length of pipe beyond the exterior walls of the building and conveys the drainage to the building sewer.
Combined. A building drain that conveys both sewage and storm water or other drainage.
Sanitary. A building drain that conveys sewage only.
Storm. A building drain that conveys storm water or other drainage, but not sewage.

BUILDING SEWER. That part of the drainage system that extends from the end of the building drain and conveys the discharge to a public sewer, private sewer, individual sewage disposal system or other point of disposal.

VENT STACK. A vertical vent pipe installed primarily for the purpose of providing circulation of air to and from any part of the drainage system.

VENT SYSTEM. A pipe or pipes installed to provide a flow of air to or from a drainage system, or to provide a circulation of air within such system to protect trap seals from siphonage and backpressure.


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Old 04-15-2013, 06:18 PM   #23
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Waste-vent stack


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You asked for it
Main drain is the building drain and is the lowest point of the plumbing that drains by gravity.

A stack is the vertical pipe that exceeds 10 foot. A waste stack carries sewage. A vent stack carries air.

A waste stack vent is a plumbing venting method allowed under the IPC

STACK. A general term for any vertical line of soil, waste, vent or inside conductor piping that extends through at least one story with or without offsets.

STACK VENT. The extension of a soil or waste stack above the highest horizontal drain connected to the stack.

STACK VENTING. A method of venting a fixture or fixtures through the soil or waste stack.

BUILDING DRAIN. That part of the lowest piping of a drainage system that receives the discharge from soil, waste and other drainage pipes inside and that extends 30 inches (762 mm) in developed length of pipe beyond the exterior walls of the building and conveys the drainage to the building sewer.
Combined. A building drain that conveys both sewage and storm water or other drainage.
Sanitary. A building drain that conveys sewage only.
Storm. A building drain that conveys storm water or other drainage, but not sewage.

BUILDING SEWER. That part of the drainage system that extends from the end of the building drain and conveys the discharge to a public sewer, private sewer, individual sewage disposal system or other point of disposal.

VENT STACK. A vertical vent pipe installed primarily for the purpose of providing circulation of air to and from any part of the drainage system.

VENT SYSTEM. A pipe or pipes installed to provide a flow of air to or from a drainage system, or to provide a circulation of air within such system to protect trap seals from siphonage and backpressure.


Someone commented that slab foundations do not have waste/vent stacks? I find this hard to believe. Any truth to this?
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Old 04-15-2013, 06:30 PM   #24
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Waste-vent stack


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Someone commented that slab foundations do not have waste/vent stacks? I find this hard to believe. Any truth to this?
If you read Ghostmaker's list of IPC definitions, you'll see a stack is 10' tall. A pipe serving a first floor fixture will not require a waste stack. If the structure is multi-floor, then yes you could have stacks serving the upper floors.
I referenced slab on grade in comparison to a basement- where the building drain is brought in under the footing.
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Old 04-15-2013, 07:22 PM   #25
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Waste-vent stack


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Yes I do. This is a forum, correct? Is it illegal to ask these questions? And NO that was not stated before but thanks.
to answer your question....YES....ben sr
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Old 04-15-2013, 07:34 PM   #26
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Waste-vent stack


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If you read Ghostmaker's list of IPC definitions, you'll see a stack is 10' tall. A pipe serving a first floor fixture will not require a waste stack. If the structure is multi-floor, then yes you could have stacks serving the upper floors.
I referenced slab on grade in comparison to a basement- where the building drain is brought in under the footing.
Ok, so since its a slab foundation the first floor fixtures simple just drain directly into the main drain running underground, thus, not a stack?
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Old 04-15-2013, 08:14 PM   #27
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Waste-vent stack


Yeah, no 1 story slab would have a 10' vertical pipe.
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Old 04-15-2013, 10:15 PM   #28
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Waste-vent stack


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Yeah, no 1 story slab would have a 10' vertical pipe.
Does that mean each fixture would have to be vented separately or would there be a "vent stack"?. I believe that is the correct term.
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Old 04-15-2013, 10:15 PM   #29
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Waste-vent stack


man all this technical stuff for what? poster what did you do with all this information, just curious.
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Old 04-15-2013, 10:55 PM   #30
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Waste-vent stack


OP, it appears you have a severe case of questionitis. I hope you are cured soon.

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