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slkarns 04-10-2012 06:19 PM

Pipe fittings and slope
 
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Hi all,

I've read that when installing a toilet drain, the slope should be around 1/4" per foot. What I don't understand is this--when you have a pipe with a slope like this, and then you connect a 90-degree closet bend and a vertical pipe, how do you prevent the vertical pipe from also having a slope? I've attached a drawing in case I'm not explaining well.

Thanks!

TheEplumber 04-10-2012 09:45 PM

The old screw fittings were actually tapped @ 1/4" ft grade. Modern plastic drainage fittings have enough play to allow for minor adjustment. It's not an issue until you drastically exceed 1/4"ft

ben's plumbing 04-10-2012 09:49 PM

Quote:

Originally Posted by slkarns (Post 896045)
Hi all,

I've read that when installing a toilet drain, the slope should be around 1/4" per foot. What I don't understand is this--when you have a pipe with a slope like this, and then you connect a 90-degree closet bend and a vertical pipe, how do you prevent the vertical pipe from also having a slope? I've attached a drawing in case I'm not explaining well.

Thanks!

eplumber is right.... its not a problem at 1/4 " per foot with play in the fittings .....:yes:

plummen 04-11-2012 12:23 AM

Depends on how far you are from the stack,most are close enough that you dont need major fall in the pipe. :)

RocketGal 04-11-2012 03:00 PM

So would ''enough play" mean you could fit the pipe in the red portion of the diagram provided into the cup of the fitting, at an angle so that it runs vertical (again refering to the red pipe in the diagram). Hope this makes sense.

Javiles 04-11-2012 09:54 PM

Depends what code your under, IPC 1/8 per foot on a 3 and up sanitary line.

TheEplumber 04-11-2012 10:06 PM

Quote:

Originally Posted by RocketGal (Post 896698)
So would ''enough play" mean you could fit the pipe in the red portion of the diagram provided into the cup of the fitting, at an angle so that it runs vertical (again refering to the red pipe in the diagram). Hope this makes sense.

At 1/8" or 1/4" per ft- it will go to vertical


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