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Old 08-22-2012, 09:40 PM   #16
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Draining/Venting Tips Needed


It depends on where the other fixtures are tied into the vent,looked like you were just catching the lav from what I saw of that line

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Old 08-22-2012, 09:49 PM   #17
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Draining/Venting Tips Needed


Does this help?

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Old 08-22-2012, 10:00 PM   #18
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Draining/Venting Tips Needed


What if you were to use a side inlet closet 90 on the toilet to drainn sink into,then just wet vent toilet through the sink.
Then just bring seperate vent up from shower where ever it lands and tie it in above someplace with sink vent.
The reason Id keep the tub tie in ahead of other fixtures is to keep soap suds from backing up into other fixtures when it dumps water out.
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Old 08-23-2012, 12:27 AM   #19
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Draining/Venting Tips Needed


This drainage stuff really has been probably the trickiest thing I've done in my renovations history!!

I of course had to Google what a 'side inlet closet 90' even was!

So that being said, I looked it up and I think you're proposing that instead of a wye to tie the wc into the 3" line, I use that 'side inlet closet 90'.

If I'm understanding you correctly then I'm not quite sure what the benefit would be. Could you possibly clarify?

I can't say it enough, your help is greatly appreciated!
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Old 08-23-2012, 04:39 AM   #20
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Draining/Venting Tips Needed


This is the only picture I could find without digging through my van,the wc version would actually be 4" on top and 3" on bottem with the side inlet.
Anyway it would allow you to wet vent the toilet through the sink vent,and it would move the san tee for sink inlet farther from where the washer dumps in to help with the suds issue.
Just trying to solve as many issues as possible in your limited area,shower drai could still be a problem though
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Old 08-23-2012, 10:32 AM   #21
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Draining/Venting Tips Needed


How about this as a solution to the laundry suds problem.... put it 4' ahead of the toilet wye on the main drain.



Does that help? Sufficient distance ahead? Or is any laundry connection ahead of a bath group a recipe for soapy drains?
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Old 08-23-2012, 11:42 AM   #22
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Draining/Venting Tips Needed


It should be ahead of the other drains not behind since the suds still have to pass them.
5' ahead of shower drain would be perfect,just depends on how picky your local inspectors are.
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Old 08-23-2012, 12:13 PM   #23
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Draining/Venting Tips Needed


I'm using a Schluter preformed base, so I can't really play with the drain location in the shower.

That being said, what if I were to drain the shower to the left (at the proper slope of course) and have it make a u-turn back into the 4" main drain approximately where the lav/vent ties in. That way I can tie in the washer as far to the right as possible (will break more slab to increase distance if needed).

Is this 'u-turn' allowed? Also, the drain for the washer seems to run for a long time horizontally on the slab. I think I would need to revent it.
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Old 08-23-2012, 12:30 PM   #24
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Draining/Venting Tips Needed


More offsets add up to more possible clogs down the road,yes run a 2" vent straight up from san tee where the trap for washer box ties in .
did washer have a seperate vent tied into stack before or was it tied in with bathroom venting?
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Old 08-23-2012, 01:39 PM   #25
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Draining/Venting Tips Needed


It was tied into bathroom venting... given what I saw when I tore apart the walls this was a very amateur job. Strangely though, the drainage worked well. Washer was behind tub and toilet and the old sink trap emptied into the trap of the washing machine (so it wasn't vented).

So you are recommending I don't do a uturn?
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Old 08-23-2012, 01:46 PM   #26
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Draining/Venting Tips Needed


A friend of mine suggested this:

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Old 08-23-2012, 01:57 PM   #27
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Draining/Venting Tips Needed


Run washer line independently
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Old 08-23-2012, 02:21 PM   #28
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Draining/Venting Tips Needed


Hybrid:



Only issue (that I see) is shower vent now, gotta check distance

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