Turning vent stack into shower drain?

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Old 11-10-18, 07:42 PM
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Turning vent stack into shower drain?

I bought a commercial building that only had a two piece bath. I'm making it into a house and trying to combine what was a utility room with the bath to make one large bathroom. The vent stack was literally right between the two rooms. What we would like to do is make the vent stack the shower drain and the pipe in the far corner the new vent stack which we will vent the pipe on the right to. What are the challenges and is this possible? I know I need a trap drain for the shower, but is there a drain type that will work that will not involve digging up the concrete? I'm trying to avoid digging up concrete.
 
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Old 11-10-18, 07:47 PM
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Removing the concrete is the only way to do it.
 
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Old 11-12-18, 05:56 PM
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Yep, content has to go. Only wye fittings underground. 👍
 
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Old 11-13-18, 05:51 AM
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There are non-dig options but they are worse than busting out the concrete and doing it right. There are pump systems but they require power and are constantly at risk of clogging or breaking down. By far the best option is to cut out the concrete and lay the piping under the slab.
 
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Old 11-24-18, 10:23 PM
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Actually figured it out. Converted the vent stack to drain using rector seal waterless trap. the other two pipes were connected and lead to vent. problem solved. glad I didnt listen to the advice here and dig up the concrete.
 
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Old 11-25-18, 05:36 AM
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So, you are not complying with plumbing code or having this project inspected?
 
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Old 11-25-18, 06:24 AM
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I once installed a Shower Stall by placing it 8" higher than the concrete floor; using concrete blocks and I placed my trap within that 8", and the 8" rise was hardly noticeable . . . . just a step up.

But this was 40 years ago in an un-zoned community (at the time) in a remote camp..
 
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Old 11-25-18, 06:41 PM
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glad I didnt listen to the advice here and dig up the concrete.

It never ceases to amaze me why people come here looking for advice on the proper way to do something when they are dead set on doing a hack job anyway.
 
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