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Plumbing Drain Lines not Sloped

Posted on 5/15/19 at 7:54 pm
Posted by deeprig9
Unincorporated Ozora, Georgia
Member since Sep 2012
64283 posts
Posted on 5/15/19 at 7:54 pm
I don't know the terminology, but I know enough to know that the shite pipe is supposed to have a slope to it, and not run 20 ft horizontal.


The easy answer is just re-run the shite pipe at a slope, right?

But the main drain pipe it enjoins is high enough up that the enjoinment doesn't allow for slope.

So now I'm replumbing the whole shite show, right?

I know they have "shite shredders" in Germany, can I just put one of these in line?

Posted by Johnpettigrew
Louisiana
Member since Sep 2017
1633 posts
Posted on 5/15/19 at 8:48 pm to
I think the proper slope is one hundredth per foot on sewer pipe. You don’t want too much slope because the water will out run the solids which turns into a blockage.
Posted by Johnpettigrew
Louisiana
Member since Sep 2017
1633 posts
Posted on 5/15/19 at 8:50 pm to
On 20’ that would be less than 1/4 inch
Posted by Sidicous
Middle of Nowhere
Member since Aug 2015
17302 posts
Posted on 6/18/19 at 4:57 pm to
This thread has kinda come in handy when looking at homes for Mom to move into. Because of this thread I was opening cabinets and looking at drain pipes for things like tubs and disposals. Finally got some usage from the Bubble Level app on my phone I downloaded years ago!

Turns out the one she decided to buy has a 4 degree backwards angle off the disposal they are gonna fix. Instead of draining down 4 degrees it was 4 degrees up from the disposal unit. Just like if it was a toilet, gotta run downhill or gonna have waste running back into the disposal and ending up stinking and stuff if not corrected. 1 out of 10 homes had this error.

So thanks all that contributed to this thread!
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