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Old 06-25-2010, 09:39 AM   #1
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Adding a second toilet.


The wife wants a second toilet, so I'm adding a small half-bath as I finish up my new framing. This is what I intend to do underneath. Is it ok?
Is the 2" vent pipe through the roof OK? Or do I need to put in different?
Just double-checking to be sure I'm good to go, Po)

Thanks!

DM
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Old 06-28-2010, 06:29 AM   #2
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Adding a second toilet.


no-one?
anyone?

DM

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Old 06-28-2010, 06:35 AM   #3
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Adding a second toilet.


What is the distance to the new toilet? Looks fine to me --but a vent for that might be required.
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Old 06-28-2010, 06:39 AM   #4
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Adding a second toilet.


3 feet-ish... the old vent is attached to the kitchen/bath sink 2" drainpipe.

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Old 06-29-2010, 11:25 AM   #5
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Adding a second toilet.


Three feet? You are fine---go ahead with the rest of your planning.---Mike---
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Old 06-29-2010, 11:28 AM   #6
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Adding a second toilet.


So the 2" vent (utilizing the 2" drain shown) is OK to go through the roof?
It was fine when it was a mobile, but it's a house now.....

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Old 06-29-2010, 11:30 AM   #7
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Adding a second toilet.


The toilets will be back to back with a wall in-between, so whatever that distance is...
they'll share water source through wall.

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Old 06-29-2010, 06:30 PM   #8
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Adding a second toilet.


I think you are O.K.--I will feel better when Alan or one of the other plumbers chimes in.--Mike--
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Old 06-29-2010, 06:51 PM   #9
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Adding a second toilet.


I hope soon, I'll be pulling the permit shortly and doing it.
Rather not have to pull it apart and redo it!

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Old 06-29-2010, 07:24 PM   #10
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Adding a second toilet.


My biggest concern is the vent---I know the 'shared' vent drain will work--However I am not sure if the code will allow it in a house.--Mobile homes get away with a lot.

I didn't realize that that part of your home started life as a mobile. I assumed the original had met code.

That's my fault for assuming something.


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Old 06-29-2010, 07:35 PM   #11
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Adding a second toilet.


Quote:
Originally Posted by oh'mike View Post
not sure if the code will allow it in a house.--Mobile homes get away with a lot.
My concerns exactly....

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Old 06-29-2010, 08:01 PM   #12
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Adding a second toilet.


How big a deal would it be to punch a new proper vent through the roof? Will you be opening the ceiling?

How old are the shingles?

I've been in the attic of a mobile and I believe opening the ceiling to route the new vent would be easier than crawling around up there. You have a vent fan to go in also?
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Old 06-29-2010, 08:53 PM   #13
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Adding a second toilet.


Depends on where you're at I guess. One thing i've learned on this site is how grossly different plumbing design and theory is from state to state. Seriously, are the laws of physics different in these places?

First off, that "vent" is not legal by Oregon code. That would be classified as a drain, and the kitchen, bathroom lavatory and tub would each have their own vents (not necessarily each one through the roof, but probably tied together in some manner in the attic or walls as possible)

The same goes for toilets, HOWEVER, when you're using a double fixture fitting (fixture cross), the 'outlet' or bottom of the fitting needs to be one pipe size larger than the inlets, meaning you'd need a 4" line going into the bottom of it, two horizontal 3" lines hitting the closet flanges, and 3" vent through the roof. (two toilets is an automatic 3" vent here) 4x3x3x3 fixture cross (not a san-cross)
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Old 06-29-2010, 09:12 PM   #14
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Adding a second toilet.


Ummmm, can you draw me a picture? LOL

I will be adding a new hole in the roof, but I only want to make ONE hole, so I need to design this right.

Thanks guys!

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Old 06-29-2010, 09:21 PM   #15
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I knew Alan would shed some light on this--Thanks Alan.---M---

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