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-   -   wet vent or rough in? (http://www.diychatroom.com/f7/wet-vent-rough-156205/)

kindahandy 09-08-2012 03:07 PM

wet vent or rough in?
 
1 Attachment(s)
Picture below

Looking for some advice to hopefuly
save me some work...

The 4” pipe stub seems pretty simple,
drop a toilet on it.

The 2” pipe in the rough-in I'm
assuming would be for a sink or shower. Given the layout this is a
bad spot for me and would like to put the sink (no shower) in the
blue taped off area spelled out as 'area for sink'. I would rather
not have to cut the concrete to use this 2” pipe if I can help it
and that’s where I am looking for some advice.

I've been told as long as the sink pipe
size is smaller than the toilet vent I can wet vent the sink into the
toilet vent. This would save me quiet a bit of work. If I can do
this then my next could questions would be... which pipe is the
correct one to connect to 1, 2, or 3? I'm assuming 1 but I'm not
even sure what pipe 3 would be so I'm really not sure...

If I can connect to one of the pipes
what do I do with the pipe in the rough in? Can I just cap, bury,
and forget? Will it get full of stagnant water and cause odors
somewhere in the bathroom or would the roof vent handle that?

Any thoughts and advice would be most
appreciated!

TheEplumber 09-08-2012 05:04 PM

Looks like every fixture has its own vent. Do you have any floor drains served by one of those vents?
You're probably save to tie the lav into #2 or #3.
Expose and cap whats in the box and concrete over it.

ben's plumbing 09-08-2012 07:13 PM

Quote:

Originally Posted by kindahandy (Post 1005651)
Picture below

Looking for some advice to hopefuly
save me some work...

The 4” pipe stub seems pretty simple,
drop a toilet on it.

The 2” pipe in the rough-in I'm
assuming would be for a sink or shower. Given the layout this is a
bad spot for me and would like to put the sink (no shower) in the
blue taped off area spelled out as 'area for sink'. I would rather
not have to cut the concrete to use this 2” pipe if I can help it
and that’s where I am looking for some advice.

I've been told as long as the sink pipe
size is smaller than the toilet vent I can wet vent the sink into the
toilet vent. This would save me quiet a bit of work. If I can do
this then my next could questions would be... which pipe is the
correct one to connect to 1, 2, or 3? I'm assuming 1 but I'm not
even sure what pipe 3 would be so I'm really not sure...

If I can connect to one of the pipes
what do I do with the pipe in the rough in? Can I just cap, bury,
and forget? Will it get full of stagnant water and cause odors
somewhere in the bathroom or would the roof vent handle that?

Any thoughts and advice would be most
appreciated!

have to agree with eplumber here looks like everything is vented by itself..should not be a problem using pipe 2 or 3 to tie vanity into...

kindahandy 09-08-2012 09:36 PM

Excellent, really appreciate the help!!!

Evstarr 09-08-2012 10:11 PM

Can you make that into a floor drain? Or would you not want one in a bsmt bath. Seems like it would be a good place to wash the dog. ;)

Javiles 09-09-2012 07:15 AM

I wounder if some of these DIY understand what a wet vent is ? the difference between a wet vent and a wet bend? at least under IPC. :huh:

Hammer450R 09-09-2012 07:18 AM

I'm no plumber but doesnt the vent have to be atleast 6" above the top of the vanity sink? Maybe it is, just looks close in the picture.

Javiles 09-09-2012 07:27 AM

Quote:

Originally Posted by Hammer450R (Post 1006102)
I'm no plumber but doesnt the vent have to be atleast 6" above the top of the vanity sink? Maybe it is, just looks close in the picture.

I will see if i can post a drawing of the two. again under other codes may have different definition. would like to hear from plumbers working with other Codes, you may right under a different code definition.

Hammer450R 09-09-2012 07:35 AM

I'm clueless on this but i just had to open holes in a basement for a CO and the plumber failed for this here in NJ. He had to raise the horizontal pipe up 6 inches since it was even with the top of the sink counter.

Javiles 09-09-2012 09:10 AM

That’s correct the vent when changing the vertical direction (offsetting) 90 degrees must be a minimum of 6 inches above the static water line of the complete system on the servicing floor if multi story, must have a clean out at the base of the stack. That has nothing to do with the term wet venting or wet bend system.

Javiles 09-09-2012 09:13 AM

1 Attachment(s)
lets see if this comes out, the wet bend would service a branch to an extent.

TheEplumber 09-09-2012 10:19 AM

Quote:

Originally Posted by Javiles (Post 1006101)
I wounder if some of these DIY understand what a wet vent is ? the difference between a wet vent and a wet bend? at least under IPC. :huh:

I am not familiar with the term wet bend. I've never heard the term before. :huh:
Until recently, I could only wet vent in the vertical- with proper vent sizing. I'm seeing more UPC controlled areas adopting other forms of wet venting. I assume they're IPC standards since
i know little about IPC
UPC does allow horizontal venting below the flood rim- only when in conflict with structural conditions, just can't connect to another vent until 6" above the flood rim.

TheEplumber 09-09-2012 10:30 AM

Quote:

Originally Posted by Hammer450R (Post 1006102)
I'm no plumber but doesnt the vent have to be atleast 6" above the top of the vanity sink? Maybe it is, just looks close in the picture.

You're correct- horizontal vent is normally at 42" as a rule of thumb.
Looking at the picture again it does appear lower, assuming the drywall seam is at 48", but they may have hung the board from the top down and the walls may not be a full 8'- so the lower board may be a rip. Only the OP knows for sure :thumbup:


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