Basement Plumbing Question w/Pics

[SunnyBeach]

We are moving in to a new house and have some questions about plumbing in the basement. I hope to figure these "extra pipes" out before building my workshop space.

For some background, the house was custom built in 1980 and has a walkout basement. It is on a pretty serious slope with dual sliding doors on the back side.

I am trying to determine if they added plumbing in the basement slab for a bathroom but just never got around to finishing it off. The placement of "some" of the pipes leads be to believe this is the case. Over the last 30 years walls have been built and some of these pipes are in different "rooms" than they need to be in.

Opinions are welcome!

This first picture is what I believe to be "stubs" for a tub/shower and sink. Looks like 2" pipe but I have not had measured it yet.

This one is in line with the two above and looks like 4" pipe. Could be a toilet but it should not be in line... from what I know.

This one off in the center of a different room. No idea what it is.

Again, opinions are welcome!

 

[Tim The Tool Man]

These are most likely sanitary stub outs for future bathroom and laundry room additions. You can easily test them by opening them up and doing the sniff test! Smell poo? You have a drain pipe! To utilize them however looks like a lot of gutting of existing structure. Personally they are a red flag to me because whoever did the work in that basement clearly didn't know what they were or how to properly cap them off before turning the the space into a room. That toilet stand pipe should have been cut off slightly below grade and capped so the carpet could lie over it, not around it, and those 2" stub out should have been built into the wall, not half in/half out. Use 2x6 instead of 2x4 for that wall... I therefore question the quality of the rest of the construction in that basement?

 

[SunnyBeach]

Thanks for the reply. Yes, the basement has a mix of construction quality/technique.

The one that bugs me the most is the one in the middle of the room with the wash sink. I have already tripped over that thing once... Anyway.

It would not take much time/money to rip out what is there and then fix it slowly. Just need to plan accordingly.

I should have some more time this weekend to measure and open up one or two of them to see what is going on.

 

[indyokie]

Drop in a smoke bomb, cover back up and find out. Looks like they never installed the sink and toilet they thought they would.