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Mysterious drain pipe in basement slab

Posted: Fri Sep 28, 2018 11:28 am
by bobthebuilder
I'm currently in the demolition phase in a basement remodel, and the previous owner built a floating floor on top of a concrete slab.

To my surprise, there's some sort of metal/iron drain pipe that was left exposed.

There's no water or fumes coming out of the pipe. I would expect it to be an ABS pipe, but this is a 100 year old house in Ontario, so there's all sorts of surprises.

Any ideas what this is? Just wanted some input before calling the plumber.

Re: Mysterious drain pipe in basement slab

Posted: Fri Sep 28, 2018 11:47 am
by A. Spruce
Depending on the size, probably an abandoned floor drain (2" pipe) or toilet (3" pipe).

Re: Mysterious drain pipe in basement slab

Posted: Fri Sep 28, 2018 12:11 pm
by bobthebuilder
Thanks A.Spruce!

That's what I figured. The pipe is around 2" in diameter.

Re: Mysterious drain pipe in basement slab

Posted: Fri Sep 28, 2018 4:09 pm
by Shannon
You never know but it is likely some sort of drain. Could have been a bar, washing machine ,bathroom...who knows for sure. Kinda looks like you can see the concrete floor patch so that may lead you to where the end is? I would suspect it is in that corner from the slope on the pipe?

Re: Mysterious drain pipe in basement slab

Posted: Fri Sep 28, 2018 8:15 pm
by bobthebuilder
Hi Shannon,

Thanks for the reply! Now that you mention it--- that area was a bar a few decades ago. The previous owner mentioned that to me before he sold the home. Great guess!

What's the best way to cap a drain that size?

PS, thanks to your videos, I've learned quite a few tips that gave me the confidence to tackle projects. Thanks so much for taking the time to make your awesome content. You're a natural teacher.

Re: Mysterious drain pipe in basement slab

Posted: Fri Sep 28, 2018 10:11 pm
by A. Spruce
If it's cast iron, get yourself a rubber cap with hose clamp, that's about the only way you're going to do it yourself.

Re: Mysterious drain pipe in basement slab

Posted: Sat Sep 29, 2018 12:03 am
by Shannon
Yup cut the pipe and cap as Spruce said