Pipe fittings and slope

slkarns

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!

Attached Images

 

TheEplumber

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

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ben's plumbing

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

plummen

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

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RocketGal

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

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

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TheEplumber

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

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