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 Drain pipe blocking shower installation
Author: parloop (CA)

I'm in the process of removing an old bathtub/shower and replacing it with a walk-in shower. The problem is that a 1 1/2" drain pipe that was once covered by the tub is now eating into where my new shower floor/walls will be. I'd like to redirect it through the bottom plate of the wall, but the wall is flush with a floor joist that's already been notched and strapped. For some reason there's also already an unoccupied notch in the bottom plate.

Pictures here: [imgur.com]

What are my options?

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 Re: Drain pipe blocking shower installation
Author: steve (CA)

To start, the shower is required to have a 2" drain. That tee going through the joist is 2x1½x1½, so you have 2" available. Where the 2" 45*s down on the other side of the joist, does the drain go horizontal or vertical? What located in the area below the shower?

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 Re: Drain pipe blocking shower installation
Author: parloop (CA)

Replacing the 1 1/2" with 2" won't be a problem, there isn't much in the area under the shower. Some air ducts and wiring, but plenty of room. Once through the joist, the drain continues on horizontally.

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 Re: Drain pipe blocking shower installation
Author: steve (CA)

I'd cut out the bottom plate and strap. Replace the tee with a 2" combo, venting straight up into the wall and then angle over to the trap.

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 Re: Drain pipe blocking shower installation
Author: LeeHiggins (OK)

Hello. Yes, I agree with Steve.
If you want to install a walk-in shower you need a 2" drain. Last month my cousin installed a walk-in shower. But, before installing he had, scheduled a convenient appointment with the contractor to walk in tub Spokane Valley [www.walkinbathtubwa.com], they had visited at his house, listen to his concerns, and they have suggested that 2" soaking depth drain should be needed for his narrow bathroom to install a walk-in shower.



Edited 2 times.

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