Help with Toilet drain rough-in

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Jeff H Young

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Ok. Thank you.
From a learning perspective: While I recognize that splicing a drain with Fernco type fittings is an acceptable way to go, if the cuts are not perfect how does the interruption in a smooth pipe interior not grab toilet paper, etc. and cause a clog?
It doesent help having ragedy joints , remove and make perfect is a choice you could make
 

wwhitney

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a washing machine dropping into a 3 inch drain will not have any affect on siphoning the toilet
because the washing machine hose is 1 1/4 in diameter and it cannot totally fill a 3 inch drain with water to
the point it will siphion anything... Also if you have a a bunch of vents its not gonna be an issue
because they are vents and they are venting everything...
That may perhaps be true in practice, but that's not what the wet venting rules in the IPC and UPC say.

Cheers, Wayne
 

Master Plumber Mark

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Ok. Thank you.
From a learning perspective: While I recognize that splicing a drain with Fernco type fittings is an acceptable way to go, if the cuts are not perfect how does the interruption in a smooth pipe interior not grab toilet paper, etc. and cause a clog?
It will work.... nothing is gonna be perfect when cutting into something under the floor....

Like when we cut cast iron to do a job the cut is never perfect but it is never a problem because
sediment basically will fill up the small gaps on the bottom side of the pipe .... rarely if ever will something
catch on the pipes
unless you have really butchered up that pvc pipe and have something sticking up like a half inch
in the line....

dont worry about it
 

Master Plumber Mark

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That may perhaps be true in practice, but that's not what the wet venting rules in the IPC and UPC say.

Cheers, Wayne

Well, he explained how many vents he has in the area and the concrete is already poured
so I think I would leave sleeping dogs lie.... he has got plenty of vents......

In our state the code is very laxed and you can

vent a whole 3 -5 bathroom 2 story home on just one 1 1/2 vent pipe sticking out the roof. if you choose to
.... I have seen this done by others and it somehow seems to work....
I would prefer at least a couple more 2 inch stacks sticking out the roof they allow this.
They have not run a 3 inch stack out a roof around here in decades...

so I am pretty sure that this guy is gonna be ok
 

Dutch6575

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Ok. Thank you very much for the all of the replies. I really appreciate all of your knowledge and experience. It has been very helpful.
 

Jeff H Young

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Missed the part about pouring concrete I would not be concerned at all about the imperfect joints either . OP was though making me wonder what problem with the joints were
 

Dutch6575

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Missed the part about pouring concrete I would not be concerned at all about the imperfect joints either . OP was though making me wonder what problem with the joints were
No real problem with the joints (no big gouges or burs), just an approximate 1/4 gap between pipes under the fernco fittings and the cuts not perfectly square but not bad either.
I was just thinking theoretically/generally how this unsmooth new part of the drain system would not catch debris.

Also, does a toilet with more 'flushing power' help to clear out the lines immediately downstream better (shoot more volume of water faster down through the drain)? I assume this is the obvious case.
Or are they just better at cleaning out what is in the bowl?
 

Jeff H Young

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No real problem with the joints (no big gouges or burs), just an approximate 1/4 gap between pipes under the fernco fittings and the cuts not perfectly square but not bad either.
I was just thinking theoretically/generally how this unsmooth new part of the drain system would not catch debris.

Also, does a toilet with more 'flushing power' help to clear out the lines immediately downstream better (shoot more volume of water faster down through the drain)? I assume this is the obvious case.
Or are they just better at cleaning out what is in the bowl?
I would assume the quicker it flushes the better , I think your ok
 
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