Hi, we have a bathroom with a toilet and a sink in our shop that has a concrete floor. We want to add a shower so we have a backup for when we remodel the one bathroom we have in the house. The ceiling are fairly high in the shop bathroom.

Our most recent thoughts were to build a platform in the bathroom so that we can tie the shower drain into the toilet drain so that we do not need to bust into the concrete floor. Does this sound like a plausible option and is there anything specific we need to know about connecting the drains. Thanks in advance for your input! :confused:

Bumping from 3rd page for suggestions :o

Will you be pulling a permit from the building department? Did you realize this would require the toilet to also be raised also? Your shower drain would also need a vent as well as a trap. You'd be raising the shower floor to be about 10" above the current floor, the vent would have to run up the wall, inside or out, and then reach the roof.

Yes, we knew we would have to raise the toilet as well, we have enough area and height to do this. We want to figure which way we were going to go before approaching the county for a permit. The toilet and shower will be very close together, maybe 3 feet. Will that create any issues tying the plumbing together? Thanks again for your input!

Why not simply do it right to began with. You're going to hafta break up the floor to connect to the toilet drain anyhow. I know of no way you can connect to the toilet without running a wye or combo off the toilet drain. Having said that. If youconnect the shower to the toilet you will have to run a vent out for the shower. A much simpler way would be to break up the floor and connect to the lavatory drain. That way the shower would be wet vented by the lavatory vent and there would be no need for a sseparate vent. As always, if a permit will be pulled ch eck with your local building department to see if wet vents are allowed. If not then go for it.
Good luck and thank you for rating my answer. Tom

I agree with Tom. Break the concrete. This way you won't have to raise toilet and shower and you won't have any steps walking in your bathroom.

Thanks Tom and Milo. We were hoping to avoid busting up the concrete but it would be the best way. The lav is across the bathroom so we will probably just tap into the toilet and vent out up through the ceiling. Thank you all again!