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Old 03-01-2013, 10:40 PM   #16
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new construction - dwv tub/toilet question


correct t for the arm but a wye for the horizontal where it turns up to go into wall as the drain vent combo.

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Old 03-01-2013, 10:45 PM   #17
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correct t for the arm but a wye for the horizontal where it turns up to go into wall as the drain vent combo.
Ah, I thought you were talking about the dirty arm.... I guess I need to stop watching Duck Dynasty while on DIY Chatroom...
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Old 03-01-2013, 10:55 PM   #18
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Ah, I thought you were talking about the dirty arm.... I guess I need to stop watching Duck Dynasty while on DIY Chatroom...
Are you kidding that show gives us all hope.
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Old 03-01-2013, 11:19 PM   #19
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I thought you could use tees for the sinks as long as they are vertical? Should I replace them all with y's?

Overkill but I'm using 2" on all drains.

I'll vent the tub up the outside wall and tie back into the stack for a better vent. Should I then a run a 3x3x2 wye before the toilet to drain the tub water versus inline after the toilet as drawn?
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Old 03-01-2013, 11:43 PM   #20
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I thought you could use tees for the sinks as long as they are vertical? Should I replace them all with y's?

Overkill but I'm using 2" on all drains.

I'll vent the tub up the outside wall and tie back into the stack for a better vent. Should I then a run a 3x3x2 wye before the toilet to drain the tub water versus inline after the toilet as drawn?
I think I messed you up-- You need to use a tee when tying the horizontal sink arm into the vent. The toilet vent should connect to the main drain with a wye/45- just remember- vertical to horizontal is always a wye(with few exceptions)
The tub vent can go through the roof by itself.
My code has the 3 x 2 wye downstream of the toilet vent.
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Old 03-01-2013, 11:48 PM   #21
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Got it- thank you!
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Old 03-02-2013, 05:08 PM   #22
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hey ghostmaker why does the tub need a separate vent when a 2 inch is allowed 8 feet to vent under ipc
As he has it drawn the tub has no vent so when the toilet flushes it will pull the water from the tub trap and allow sewer gas into the house. He may not pull the trap on the first flush but each flush will cause a rocking motion in the liquid trap seal. This motion will eventually cause a loss of seal allowing sewer gas into your living area.

It's basic fluid dynamics. A toilet is a large surge of water and as that surge enters the pipe an air source is needed.

The second reason is as he has it drawn it will not meet the Ohio plumbing code. The object of plumbing is to install it in a way that protects the trap seals. The code is designed from past mistakes and is constantly revised to make corrections. Plumbing in the USA is over 100 years of knowledge accumulated from failures.

You will find if you pull the permits most if not all inspectors will be willing to come out and help you lay out the job. Our job is to make sure an installation is done so your house and largest asset you may own is protected. We are not here to cause you problems but to guide you on the proper way to install a particular installation to meet the code.



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Old 03-03-2013, 01:38 AM   #23
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new construction - dwv tub/toilet question


hey ghost just so i learn. if you put the tub on a wye between the sink/wet vent combo and the toilet and it is a 2 inch going to tub and is within 8 feet of wet vent would that meet code
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Old 03-03-2013, 02:21 PM   #24
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I re-drew it with proposed changes. Because it is a whirlpool tub with a deck/pier it will not be possible to vent straight up or inbetween the toilet and tub. I can go up the outside wall and revent if I have to but was wondering if the new picture would also work downstream? It is just under 8 feet center to center.
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