Hello all! I have a 5-inch stub-out pipe in my basement that I would like to re-route all of the Drain Waste water on one side of my house to -- in addition to still keeping the DWV from one bathroom going to the existing main drain pipe. So basically, I'd have two main drains leading to the sewer.

Can anyone give me a lowdown on the pros/cons of this? Is this even possible, or desirable? I will be checking the local plumbing code for our town (northeast Kansas) to see if anything specifically prohibits this, but my thought is this-- the volume of waste water in my house won't be changing, it will just be coming from 2 different areas. Right?

Either way, I would really appreciate any tips from the pros or experienced do-it-yourselfers.

Thanks in advance.

You have a what? Maybe I have one too!

You have a what? Maybe I have one too!!

Sorry about that. I guess that's what I get for trying to type a message on these stupid smartphones that are too small for my fingers these days. :)

My question is this: I have a 5-inch stub-out pipe in my basement that I would like to re-route all of the Drain Waste water on one side of my house to -- in addition to still keeping the DWV from one bathroom going to the existing main drain pipe. So basically, I'd have two main drains leading to the sewer.

Can anyone give me a lowdown on the pros/cons of this? Is this even possible, or desirable? I will be checking the local plumbing code for our town (northeast Kansas) to see if anything specifically prohibits this, but my thought is this-- the volume of waste water in my house won't be changing, it will just be coming from 2 different areas. Right?

Either way, I would really appreciate any tips from the pros or experienced do-it-yourselfers.

Thanks in advance.

A few corrections. That 5" stub up is really a 4" ID Pipe.
So basically, I'd have two main drains There's only one main drain in the house and that's the one leading out of the house to the sewer. Everything connected to it is a branch.
Before I give you an answer. I have to know the reason you wish to do this. Everything is possible in plumbing as long as it is kept in code and with enough money. Do you have a separate system for each bathroom? Let me know, Tom

A few corrections. That 5" stub up is really a 4" ID Pipe. There's only one main drain in the house and that's the one leading out of the house to the sewer. Everything connected to it is a branch.
Before I give you an answer. I have to know the reason you wish to do this. Everything is possible in plumbing as long as it is kept in code and with enough money. Do you have a separate system for each bathroom? Let me know, Tom

Tom:

Basically, there is a very low-hanging waste water pipe going right across a nearly finished basement. It's an eyesore, and it takes a lot of space away from my otherwise nice high ceilings. Due to the framing members of the house, it doesn't seem possible for this pipe to take any other efficient route to the main drain area, without even more significant reduction of basement living space.

My thought is, since there is only one bathroom on that side of the house, I would keep it draining to the current main drain area. If possible and allowed, I would remove the drain pipe that feeds all other drains in the house, create a new horizontal elbow where there's current a vertical one, and pipe everything else to the other drain pipe in the floor (which definitely measures 5" wide if I read my trusty tape measure correctly).

I think my main questions are: has anyone done this before successfully (or not)? And more to the point, before I do this work, is there a way I can make sure that this intended drain definitely leads to the main waste line?

Again, thanks for your time.