Plumbing ?

[35k0]

Hey everyone,
I have a 30x44 slab formed up, walls will be 10' high 2x6 construction with Attic Trusses.
We are planning to put a bathroom in the attic. The question I have is, can the 4'' septic line come up the footing, through the bottom plate and up the exterior wall between the studs?
I don't want the pipe exposed if I don't have to.
We will also be bringing over a water line from the house, can that be sleeved through the footing, through the bottom plate and into the exterior wall as well?
Or, would I just need to make a little utility closet and stub them up through that area?
Thanks for any response.
I live in Northern MN and the water line will be buried below the frost line.
- Shawn

 

[matt_i]

I would try to put it in a chase that's inside the exterior wall.

Not what you asked for. But, if it ever needed to be serviced, a couple panels off and you're working. You preserve full wall insulation that way too. Possible to route your water line thru the same chase. Insulate the exterior-facing side of the chase fully but leave the interior-side of the chase uninsulated. Heat will flow to the water line.

Imo it would be very easy to get "off" during the pour when you hardly have any room for error with a 4.25" OD pipe in a 5.5" cavity. That 4" pipe is not easily flexed around like a 3/4" or 1". Bottom and top plates will be compromised and need extra beef.

Concrete stem wall will be thin in that area where the pipe rises, even if an 8" wall the exterior of wood and concrete are close to flush. Easy for the stem wall to crack in the thin section.

If something ever went wrong you'd be jackhammering out the foundation and figuring out how to support the building in the meantime. Vs. some dirt work excavation and then precision shoveling under the footer (or down to a penetrating sleeve). The extra height should also help with the slope.

 

[TurnipTruck]

Don’t put water in exterior walls if at all possible. The utility closet sounds okay, if it is heated (or at least vented to the interior).
Sleeves through the foundation is recommended.
We don’t get as cold as you, but it does stay cold longer up here.

 

[35k0]

Thanks guys, I forgot to mention the slab will be pex/radiant heat.
I figured going through the footing was a bad idea, but needed to ask anyways.
Another idea was to pop them through, under where the stairs will be.

 

[casmurbax]

Ideally before you run your radiant floor piping, you would have the rough in for the plumbing done at least through the slab

So you are not going to put a sink on the first floor?

As other's have suggested keep the piping out of the exterior wall studs.

 

[35k0]

Ideally before you run your radiant floor piping, you would have the rough in for the plumbing done at least through the slab

So you are not going to put a sink on the first floor?

As other's have suggested keep the piping out of the exterior wall studs.

I am going to put a sink on the first floor with a drain. I will also have a 10' channel drain.

This is all going to be dug in before poly, foam, pex and rebar.

Thanks!

 

[Jking24]

I would suggest putting the pipe just inside the building in the same utility area that will house the radiant plumbing/ boiler

 

[35k0]

I would suggest putting the pipe just inside the building in the same utility area that will house the radiant plumbing/ boiler

Good call, I appreciate all the feedback!