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Old 03-24-2013, 09:04 AM   #1
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Wet venting


I know you can wet vent fixtures that are on the same floor but lets say I added a shower in the basement wouldn't I have to extend the vent pipe up and over the first floor fixtures and tie into the stack to avoid the wet venting?

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Old 03-24-2013, 09:16 AM   #2
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Wet venting


ipc code
http://publicecodes.cyberregs.com/ic...?bu2=undefined

it need to be tied into a dry vent stack 6 inches higher than flood rim of fixtures on the next floor
or use an a.a.v. (cheater vent)

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Old 03-24-2013, 11:51 AM   #3
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Wet venting


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Originally Posted by jaydevries View Post
ipc code
http://publicecodes.cyberregs.com/ic...?bu2=undefined

it need to be tied into a dry vent stack 6 inches higher than flood rim of fixtures on the next floor
or use an a.a.v. (cheater vent)
the link you sent me basically says wet venting only allowed for fixtures on the same floor, correct? Other than that the vent needs to extend up and over the fixtures of the next floor?
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Old 03-24-2013, 12:03 PM   #4
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Wet venting


here is the only exception
http://publicecodes.cyberregs.com/ic...?bu2=undefined
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Old 03-24-2013, 04:29 PM   #5
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Wet venting


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Originally Posted by jaydevries View Post
I read the article on circuit vents but am still confused. What exactly is that? Does that mean the drains for the fixtures run horizontally and eventually drain into the vertical main waste stack? And a separate vent stack is used for these fixtures?
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Old 03-24-2013, 05:54 PM   #6
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Wet venting


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Originally Posted by jaydevries View Post
A common vent is still on the same floor.
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Old 03-24-2013, 06:21 PM   #7
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Originally Posted by Ghostmaker View Post
A common vent is still on the same floor.
A common vent is just a vent stack that is shared by more than one fixture, right?
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Old 03-24-2013, 06:31 PM   #8
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Wet venting


I suggest you read the definitions of the terms you are using. It might help you understand what your trying to do.

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.


FIXTURE DRAIN. The drain from the trap of a fixture to a junction with any other drain pipe.

COMMON VENT. A vent connecting at the junction of two fixture drains or to a fixture branch and serving as a vent for both fixtures

http://codes.ohio.gov/oac/4101%3A3-2
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Old 03-24-2013, 06:35 PM   #9
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Wet venting


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Originally Posted by miguel24932 View Post
I know you can wet vent fixtures that are on the same floor but lets say I added a shower in the basement wouldn't I have to extend the vent pipe up and over the first floor fixtures and tie into the stack to avoid the wet venting?
The shower would be individual vented. Your tie in must be a min of 42 inches above the first floor floor. You can tie into the vent stack at that point.

A vent stack is when that 3 inch pipe is no longer acting as a drain for anything and is just going out the roof and providing air.
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Old 03-24-2013, 07:40 PM   #10
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Wet venting


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Originally Posted by Ghostmaker View Post
The shower would be individual vented. Your tie in must be a min of 42 inches above the first floor floor. You can tie into the vent stack at that point.

A vent stack is when that 3 inch pipe is no longer acting as a drain for anything and is just going out the roof and providing air.
How are you getting 42 inches? It says 6" above the highest fixtures flood level.
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Old 03-24-2013, 07:40 PM   #11
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Wet venting


Quote:
Originally Posted by Ghostmaker View Post
I suggest you read the definitions of the terms you are using. It might help you understand what your trying to do.

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.


FIXTURE DRAIN. The drain from the trap of a fixture to a junction with any other drain pipe.

COMMON VENT. A vent connecting at the junction of two fixture drains or to a fixture branch and serving as a vent for both fixtures

http://codes.ohio.gov/oac/4101%3A3-2

I read the article on circuit vents but am still confused. What exactly is that? Does that mean the drains for the fixtures run horizontally and eventually drain into the vertical main waste stack? And a separate vent stack is used for these fixtures?
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Old 03-24-2013, 08:06 PM   #12
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Wet venting


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Originally Posted by miguel24932 View Post
How are you getting 42 inches? It says 6" above the highest fixtures flood level.
42" is a rule of thumb- kitchen sink flood rim = 36" + 6" = 42"
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Old 03-24-2013, 08:39 PM   #13
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42" is a rule of thumb- kitchen sink flood rim = 36" + 6" = 42"
What do you mean kitchen sink is at 36". That part I don't understand.
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Old 03-24-2013, 09:40 PM   #14
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Wet venting


36 inches is the point they are saying your vent would no longer flood. Maybe they could of said 30 inches, maybe 24 inches. 36 inches is what they are agreeing on. Then just add 6 inches. Why did they come up with this number? I would hope from experience and common sense. I would hope a bunch of plumbers made all the drain pipes of a house in clear plastic. Then sat around for weeks watching what happened as water went down the drain
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Old 03-24-2013, 09:44 PM   #15
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Wet venting


Ghostmaker, showers have to be individually vented? Does that mean a two inch vent all the way through the roof? Nothing else connected to that vent?

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