I am roughing in my plumbing tomorrow – I have cast a 4″ sewer pipe in my concrete wall to leave a hole for the main drain, planning on exiting the house with 3″ PVC then a 3×4 T w/cleanout and 4″ to the septic tank.
The question: I remember (its been a while) something about 4″ must leave the house. I’ll have 3″ PVC leaving the house, then 4″ PVC within a foot outside. Any code violation here? If so, I need to chip a bigger hole in 8″ of concrete.
Treat every person you meet like you will know them the rest of your life – you just might!
Replies
Where I live it has to be 4 inch leaving the house. You don't want all your waste bottlenecking on the way out!
Have a good day
Cliffy
Hmmm sounds like a local code issue to me.
I can't find anywhere in the UPC uniform plumbing code where it says you have to have a 4" pipe.
UPC goes by fixture loading good rule of thumb on most house 3 toilets or less 3" 4 toilets or more = 4"
Thanks guys - I'll only have 2 toilets, so no problems w/3", I think I'll use 3" as planned and enlarge the hole if the inspector wants me to. (and quote the UPC to him)
Treat every person you meet like you will know them the rest of your life - you just might!
Carefull quoting the upc the first line of that book says the administrative athority supercedes anything written past this point
Thanks - and I have certainly been a part of this type of discussion w/inspectors, and learned to shut up and smile.
Treat every person you meet like you will know them the rest of your life - you just might!
In my own place, I have only two toilets; my plumbing sub installed a 4" line when we roughed in the plumbing. And yes, I'd goofed on what size to cast the opening in the fdn wall, so out came the Kango....
OTOH, if the piece of pipe you cast into the wall is 4" PVC, you could save yourself a lot of busted concrete if you are able to just grind out enough of a groove around both sides of it to slide the hub of the appropriate joint fitting onto it.
Dinosaur
A day may come when the courage of men fails,when we forsake our friends and break all bonds of fellowship...
But it is not this day.
Edited 10/4/2005 11:51 pm ET by Dinosaur
in PA it must be 4" (in our locale)
why don't you just call the inspector and ask before you do the rough-in ?
carpenter in transition
I know the hole in the septic tank is a 4, so might as well run 4 from cleanout to tank. I went with 3 and a bushing.