drain pipe sizes 3" or 4"
I am new here and have been reading different thread and learned a lot.
Great forum and very useful.
I am hoping to get some opinion from some of your experiences so I can make the right decision in the plumbing makeover that my house is going to get.
Basically my main concern at this time is to make sure the right size pipe is being used on the toilets and main drain.
They will be low flow (Toto) and I understand that 3" pipe is enough and may be even better although you can use 3" or 4" according to codes.
This remodel is for a one story house so several line are going to connect to the main drain underneath the house, which I was going to make a 4"(about 10 feet before exiting the house crawl space) but I am not sure if I even need to do that until I actually connect to the sewer line since it seems fine to run 3" all the way.
I will check with the plumbing inspector but was hoping to get some input from anybody willing to help.