Basement bathroom rough in question
- Thread starter jacobsed
- Start date
manwithtools
ALLIANCE MEMBER
My best guess below. I suspect the vent was intended to go in the wall that would be framed beside the shower. Pretty confident on the three of them, so process of elimination leaves the 4th as the vent.
Yep this should be right. If it was done right there should be a vent stub overhead somewhere to tie that bath into.My best guess below. I suspect the vent was intended to go in the wall that would be framed beside the shower. Pretty confident on the three of them, so process of elimination leaves the 4th as the vent.
mike93lx
ALLIANCE MEMBER
I'd agree, but would also run a camera before starting any significant work to make sure and confirm no issues have come up in the last 40+years
Probably post 2 has it, but would be easy to tell a shower as there would be a trap at the bottom of it.run some water to make sure the trap is primed and put a stick in & see which one has the trap. probably could even see water with a flashlight.
and the vent and sink will need to be tied in to the main stack/vent
I suspect the sink is wet venting the toilet. .
and the vent and sink will need to be tied in to the main stack/vent
I suspect the sink is wet venting the toilet. .
Lots of great replies guys I really appreciate it. Yes, there are capped off supply lines overhead going into that room. Right now it is storage/shop space. My mother in law is getting up there in age and she is reluctant to spend anytime in her very nicely remodeled basement due to needing an accessible toilet without having to navigate a flight of stairs first. I can easily set a toilet and vanity and that room has a door with a locking knob. I ran water down the 4” drain for the toilet for a half hour and everything seems free and clear. I don’t see a tie in for the vent. I was going to use an AAV for it.
mike93lx
ALLIANCE MEMBER
Well damn, you aren't messing around!
Gotta love a ******* in the middle of a big room
Gotta love a ******* in the middle of a big room
Haha yes! I asked her if she wanted a curtain but she said nope don’t need it. She declined a vanity also. There is a laundry sink in an adjacent room where you can wash your hands.Well damn, you aren't messing around!
Gotta love a ******* in the middle of a big room
75gmck25
Well-known member
Showers and washing machines (by current code) have a 2" drain to reduce the possibility of overflows, but sinks and bathtub/shower combos can use a 1.5" drain.
Unless the perspective is wrong, that pipe on the right is larger, which means it's probably intended for the shower or washing machine. If you run a snake down it and find a P-trap under the floor, it was intended for a shower. For a shower, you may also find that the cement was framed around that pipe and then filled in, so you can break it out and make minor adjustments to the pipe location when you set the shower.
Unless the perspective is wrong, that pipe on the right is larger, which means it's probably intended for the shower or washing machine. If you run a snake down it and find a P-trap under the floor, it was intended for a shower. For a shower, you may also find that the cement was framed around that pipe and then filled in, so you can break it out and make minor adjustments to the pipe location when you set the shower.
I suspect it's a wet vent for the toilet as well as sink drain, that would make it 2" also
All of the risers are 2" pipe. The one on the left is the shower. I put water down it and and you can see water in the trap. I put water down the other two also and there was no standing water that I saw. I think the vent is the one to the right of the shower as @manwithtools stated in the first reply to this thread. There really isn't any other logical reason for a pipe to be there. I put an AAC on it. The toilet works great and I don't hear gurgling anywhere.
larry4406
Well-known member
At the day job, the smallest they run under concrete is 2". So wet bars, lavy's etc, all get 2" stub ups. When roughed, the tee is installed and then sometimes stepped down to 1.5" for the vent.
I am guessing its a Code/local thing as I have had 3 different plumbers over the past 10 years and all do it this way. Not something I really paid attention to when I started in this industry 20+ years ago.