Builder Rough-In Plumbing Help

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Old 01-12-20, 12:52 AM
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Builder Rough-In Plumbing Help

How can I tell if my builder rough in plumbing Beneath the slab is ready to finish without breaking up the concrete?

ive got what looks like a toilet flange coming out of the concrete about 12.5” from the unfinished wall, two 2” capped pipes in the unfinished wall (also coming out of the concrete), and I think a 3” or 4” pipe which runs from below the concrete floor to above the floor joists.

we’ve also got a sump pump which connects to a hose outside as well as a concrete square which looks like it may have been poured after the basement foundation was. I’ve only done work in our upstairs bathroom so this is all new to me. Thanks! (And sorry if this is a silly question)
 
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Old 01-12-20, 12:04 PM
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Welcome to the forums.

You could check with the builder.

Typically if the stubs are in place in the concrete floor they are connected and ready to be used.
Pictures are very helpful too........ How-to-insert-pictures.
 
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Old 01-13-20, 07:01 AM
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Builder rough-in plumbing pictures

Thank you - I've attached some images of the area in question if it helps. I wasn't able to attach them from my phone.

My wife and I bought the house a couple of years ago so we aren't sure who the builder is, but I may call the city recorder's office today to see if we can have these identified somehow.

Also - am I correct in that there are two (2) rough-ins for sinks inside of the frame wall here?

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Last edited by PJmax; 01-15-20 at 07:09 PM. Reason: resized pictures
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Old 01-13-20, 08:20 AM
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Directly above the rough in on the left of the stack is a pipe going through the top plate of the wall.
Where does that go?
 
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Old 01-13-20, 04:16 PM
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I cannot say definitively where it goes; however, it disappears into the floor joist into the framed wall between my two existing bathrooms on the first floor.

i would suspect it may go out of the house? It is labeled “Future Vent” by the builder.
 
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Old 01-14-20, 05:41 AM
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If the pipe is labeled "vent" then... it's the vent. If there is a cap on the end be ready for some water to come out when you remove the cap.

I don't see any rough in for a tub or shower. Will this be a powder room only?

Before finishing off the walls install steel plates over the main vent stack. Since that pipe is close to the edges of the top & bottom plates the steel plate will prevent you from running a screw or nail through the pipe when installing the sheetrock.
 
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Old 01-14-20, 08:35 AM
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Okay thank you that is helpful. Would you run that steel pipe the length of the wall or only at the edges of the top/bottom plate? We were planning on bisecting the wall and installing a closet on the left-hand side of the picture with the bathroom on the right-hand side.

And yes, we are planning for this to be a toilet/sink installation only.
 
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Old 01-14-20, 08:41 AM
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I would assume the tub rough in has been cemented over. It's that small patch on the floor. You would just need to break it out if you want a tub there... I bet it's also been plumbed, but was just covered to avoid leaving a hole someone could fall into.

And yes, I'd say the left line is the vent, right line the sink.
 
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Old 01-14-20, 09:32 AM
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Plate not pipe. You attach them wherever a pipe or wire is near the face of a stud to prevent it from being damaged while hanging sheetrock or a picture.

 
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Old 01-15-20, 07:31 AM
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Alright thanks so much, I feel comfortable proceeding now that I've had some more experienced eyes on everything.

I mentioned the concrete square to my wife and now she wants to put in a shower.
 
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Old 01-15-20, 08:34 AM
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I mentioned the concrete square to my wife and now she wants to put in a shower.
Ahhh, Rookie mistake. lol
 
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Old 01-15-20, 08:50 AM
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One thing to note, if you ever finish the opposite side of the wall (the side the osb is leaning against) is that the clean out fitting needs to remain permanently accessible. So if you hang drywall there you would need to make a hole and put a cover over it. These covers work nicely and aren't too obvious.
 
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