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deeprig9
Member since Sep 2012
39590 posts

Plumbing Drain Lines not Sloped
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?



Johnpettigrew
LSU Fan
Louisiana
Member since Sep 2017
685 posts

re: Plumbing Drain Lines not Sloped
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.


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70
Johnpettigrew
LSU Fan
Louisiana
Member since Sep 2017
685 posts

re: Plumbing Drain Lines not Sloped
On 20’ that would be less than 1/4 inch


WhiteMandingo
Member since Jan 2016
1745 posts

re: Plumbing Drain Lines not Sloped
The code is 1/8 th of an inch per foot for sanitary waste.
So on 20'
You need 2 1/2" of fall


deeprig9
Member since Sep 2012
39590 posts

re: Plumbing Drain Lines not Sloped
quote:

The code is 1/8 th of an inch per foot for sanitary waste.
So on 20'
You need 2 1/2" of fall



I have zero inches of fall.


CottonWasKing
LSU Fan
4,8,15,16,23,42
Member since Jun 2011
22685 posts

re: Plumbing Drain Lines not Sloped
quote:

I have zero inches of fall.


Do yourself a favor. Call a good plumber and let them deal with it while you write the check


deeprig9
Member since Sep 2012
39590 posts

re: Plumbing Drain Lines not Sloped
quote:

Do yourself a favor. Call a good plumber and let them deal with it while you write the check



I had three plumbers tell me to frick off on the phone, they don't do septic, I said I just had my septic replaced, it ain't the septic, they say it must be your main line, I say no, they replaced that too, I say I'll send you a picture of my invoice, I'll send you pics of the work, just send somebody out, nobody in metro ATL wants my money. I'm feeling very Frank Rizzo about this.


deeprig9
Member since Sep 2012
39590 posts

re: Plumbing Drain Lines not Sloped
This is 90's build, probably alot of buildup, can I pour muriatic acid down the pipes to get this shite cleaned out?


Zappas Stache
Utility Muffin Research Kitchen
Member since Apr 2009
28470 posts

re: Plumbing Drain Lines not Sloped
What type of toilet flange do you have? A typical one drops straight down and connects to a 90 elbow that runs out to you stack...or septic in you case. You can get a 45 degree toilet flange that you would connect to another 45 elbow and should give you some xtra height at the start of the run.


deeprig9
Member since Sep 2012
39590 posts

re: Plumbing Drain Lines not Sloped
90 out of toilet


Image: https://i.imgur.com/fZyClRz.jpg




Bathroom sink joins it here.

Image: https://i.imgur.com/ysuQKQ4.jpg





Turn here about 3 feet from where the sink line joins it.


Image: https://i.imgur.com/lifgaAg.jpg




Then it is a straight line for another 10 feet or so.





Zappas Stache
Utility Muffin Research Kitchen
Member since Apr 2009
28470 posts

re: Plumbing Drain Lines not Sloped
So is the toilet backing up? What is the issue you are having?


WhiteMandingo
Member since Jan 2016
1745 posts

re: Plumbing Drain Lines not Sloped
You could install a lift station?

Idk


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deeprig9
Member since Sep 2012
39590 posts

re: Plumbing Drain Lines not Sloped
Sometimes. And when it does, you get bubbles when running sink in the same room, or one of the upstairs bathrooms but not the other upstairs bathroom.



Zappas Stache
Utility Muffin Research Kitchen
Member since Apr 2009
28470 posts

re: Plumbing Drain Lines not Sloped
quote:

Sometimes


One thing I don't see in your pics is a vent pipe. Is there one near the toilet?


deeprig9
Member since Sep 2012
39590 posts

re: Plumbing Drain Lines not Sloped
I will look for this tonight. I appreciate your attention to the matter. Im also a big zappa fan.
This post was edited on 5/16 at 5:58 pm


keakar
Member since Jan 2017
14311 posts

re: Plumbing Drain Lines not Sloped
quote:

I had three plumbers tell me to frick off on the phone, they don't do septic, I said I just had my septic replaced, it ain't the septic, they say it must be your main line, I say no, they replaced that too, I say I'll send you a picture of my invoice, I'll send you pics of the work, just send somebody out, nobody in metro ATL wants my money.


i think the issue they dont want to deal with is, you cant reasonably raise the house, so the remedy to create more angle to the sewer lines would be lowering your septic system connection, if not the whole system.

so have a look, can the entry point to septic system be lowered at least an inch or two if those pipes were cut and reconnected?

next time when you talk to them, say the company you had come out, you think they did a bad job and installed the main line wrong and you need that main line part adjusted or replaced. maybe just ask for an inspection to be done and then while the guy is there, you two can figure out what needs to be done.
This post was edited on 5/17 at 11:29 am


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10
keakar
Member since Jan 2017
14311 posts

re: Plumbing Drain Lines not Sloped
as mentioned, you need at minimum a 3" vent pipe connection very close to the toilet, i dont recall off hand the exact code, but its something like within 3 feet. also why isnt there a cleanout and the end of the line before the toilet in case of a blockage? there almost always is for exposed sewer lines.

i also notice in your pictures it looks like thats a 4"x 3" 90 on the toilet, im no code expert but no way in hell should you be reducing pipe size after the toilet.

another observation is they seem to be trying to cram everything in tight to the floors to get between the floor joist bracing instead of under them. is there a really good reason they couldnt have run the pipes at more natural way going under the rafters as needed? im mainly looking at that damn cross brace right by the toilet 90
This post was edited on 5/17 at 11:32 am


Chitown_Badger
Wisconsin Fan
A one drink walk from Wrigley
Member since May 2013
14675 posts

re: Plumbing Drain Lines not Sloped
So maybe not the perfect thread for this question but close enough.

In my second bathroom (humble brag), the water in the tub will drain only to the point that it's below the drain cover. So if I take the plug off, I can see the water sitting there about an inch down.

I live on the fourth floor of a five story condo building, and the master bath does not have the same issue. Is there any way to know what's likely causing this? It's not blocked because all the water drains and I've gone at it with one of those 3 foot long clog grabber things. Would be interested to know if it was faulty plumbing from the start, something within the walls of my condo, or something further down the line out of my reach.


wickowick
LSU Fan
Head of Island
Member since Dec 2006
41556 posts

re: Plumbing Drain Lines not Sloped
There is a p trap under all plumbing to keep sewer gasses from coming into the home. You are seeing the water on the top of the p trap

Image: https://upload.wikimedia.org/wikipedia/commons/thumb/8/8e/P-trap.svg/800px-P-trap.svg.png


Chitown_Badger
Wisconsin Fan
A one drink walk from Wrigley
Member since May 2013
14675 posts

re: Plumbing Drain Lines not Sloped
quote:

wickowick


So you're saying that's normal then?

Haven't showered in there for months and then we suddenly had an issue with drain flies. Just finished offing those frickers with a wire brush cleaning and some DrainGel.


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