Adding a toilet.

[papawfalcon]

I want to add a toilet and sink in my garage.It will be in an outside corner and thought I could dig a trench under the slab. The problem is what is the best way to cut a hole for the water line and a hole for the toilet drain. Thanks Ken.

 

[wb2vsj]

Boy, you are a glutton for punishment

How thick is the slab? Hammer drill a circle and then hammer/chisel out the center?

Have you considered a raised platform for the toilet then exiting out the side of the wall? I don't know what your climate is - you may/will have to insulate if you do this.

 

[Brian_B_]

At some point in the past someone added a toilet, big fiberglass utility sink, and the washer\dryer hookups in my garage. They busted out the whole section of concrete and put all the necessary pipes in and then re-poured that whole area.

It is walled off into a room. The only way you can tell..is under the door itself...you can see the crack and a very very very slight change in the color of the concrete.

I love it! Working in the garage I have a half bath and do not have to track through the house. The big sink is great for washing up and some parts washing.

I am sure others will chime in on the how to side, but it is well worth it IMHO.

 

[papawfalcon]

Ask and you shall receive. Maybe easier said than done I really appricate the feed back. Will have lots of food for thought.Thanks Ken

 

[trbomax]

You could core drill it and get a perfect round hole.

 

[Bib Overalls]

You can make the hole with a heavy duty hammer drill from a tool rental. Drill a circle of 1/2" holes close together and bust it out. This is a nasty, dirty job. I know, I've done it. Always a risk of cracking the slab. And then there is the digging. Undermining a slab requires more hole than you would think. Good luck.

 

[Garage5.9]

target saw with a diamond blade

 

[beerdog]

call a good plumber.

 

[Grumpy365]

Frame out a floor. Make he bathroom step up 6" or so. So you do your plumbing above the concrete instead of under it.

 

[93L#3008]

Frame out a floor. Make he bathroom step up 6" or so. So you do your plumbing above the concrete instead of under it.

cheapest and easiest way to go.

 

[Daniel Dudley]

You could core drill it and get a perfect round hole.

This is what I did. I dug under the slab, and core drilled 5 inch holes, one for the waste line and one for the water line. The drill had a vacuum base that sucked down on the concrete, and it flushed the hole with water. took me an afternoon to drill two holes through 14 inches of concrete.

 

[incurablescrounge]

What about using an incinerating toilet (Incinolet) and waterless hand cleaner?