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Old 10-10-2012, 09:58 AM   #1
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Toilet Drain


Which of these is the best configuration for a toilet drain ?

Going to assume that C is incorrect because of no immediate vent pipe; that leaves A or B.
Which one would be the best configuration ?

Thanks,
Arky


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Old 10-10-2012, 10:10 AM   #2
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If the "MAIN STACK" is a vent and not a waste stack to an upper floor then I'd guess B
Whats the prize?

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Old 10-10-2012, 10:16 AM   #3
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Quote:
Originally Posted by TheEplumber View Post
If the "MAIN STACK" is a vent and not a waste stack to an upper floor then I'd guess B
Whats the prize?
Thanks Eplumber,

(No prize ) I was going to go with B at first, but then I thought that A would be more
of a straight shot, however, I still wasn't sure.

What makes B a better choice than A ?

(The main stack is a vent)

Thanks,
Arky

Last edited by Arky217; 10-10-2012 at 10:18 AM. Reason: add clarification
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Old 10-10-2012, 10:25 AM   #4
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Toilet Drain


Just missing a trap under the sink in all the pictures.
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Old 10-10-2012, 10:35 AM   #5
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Originally Posted by joecaption View Post
Just missing a trap under the sink in all the pictures.
?? Not a sink, it's a toilet.

Arky
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Old 10-10-2012, 10:49 AM   #6
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Quote:
Originally Posted by Arky217 View Post
Thanks Eplumber,

(No prize ) I was going to go with B at first, but then I thought that A would be more
of a straight shot, however, I still wasn't sure.

What makes B a better choice than A ?

(The main stack is a vent)

Thanks,
Arky
This image shows water flow in a sinks trap arm, same applies for toilets. A wye's configuration at it's crotch restricts air movement to the trap.
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Old 10-10-2012, 11:32 AM   #7
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Makes sense, thanks.

Arky
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Old 10-15-2012, 10:18 PM   #8
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Toilet Drain


In the following picture, assuming that the 'other drainage' pipe cannot be moved, which would be the better arrangement, A or B ?

Thanks,
Arky

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Old 10-15-2012, 10:25 PM   #9
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A is the best. this is assuming that the has nothing connected to it other than a lav or nothing at all.
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Old 10-15-2012, 10:27 PM   #10
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Quote:
Originally Posted by Arky217 View Post
In the following picture, assuming that the 'other drainage' pipe cannot be moved, which would be the better arrangement, A or B ?

Thanks,
Arky

Are you taking a test or something? I'd hate to give you quiz answers
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Old 10-15-2012, 11:02 PM   #11
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Quote:
Originally Posted by TheEplumber View Post
Are you taking a test or something? I'd hate to give you quiz answers
No test ; I'm just an old (67) geezer, hoping to get my plumbing right on my retirement house
so when I get to old to move around , hopefully I won't have any plumbing problems to deal with.

Regards,
Arky
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Old 10-19-2012, 10:00 PM   #12
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Toilet Drain


One last time on the toilet drain.
Because of obstructions and space limitations, I need to have the toilet drain into the
stack lower than the tub and sink.
Would there be any potential problems with this arrangement, that is having the sink and tub drain into the stack about a foot above the toilet inlet ?



Thanks,
Arky

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