I'm looking for some guidance on running water/drain from the house to a detached garage approximately 35ft away. Both are on slab foundations. It seems the easiest place to tie in is the kitchen cold water and drain as they are both above the slab, directly against the back wall and the nearest water/drain to the garage. I've gathered that I'll need to dig a trench 36" deep and run 1/2" K-copper and 3" PVC under the footings of both the house and garage. The copper will be sheathed in 1" PVC where it contacts the slab.
I'm unclear about a few things:
1. How to connect the incoming drain to the existing undersink drain. I've attached a picture of what it looks like under the sink:
ETA: The blue valve is for a silcock on the back of the house. I assume I will need a sump to make use of the kitchen drain?
2. The best way to excavate and fish the lines through the fill between the slab and the bottom of the footings.
I considered breaking up a 2'x2' square in each slab, working from the inside and finishing with bag concrete. If there were a way to do it from the outside (and not have to break up the floor) I'm open to suggestions.
I paid a plumber to do an estimate. He said it would be several thousand and if I don't mind the digging I could do it myself in a weekend and save on most of that. I'm comfortable doing all the labor involved, but not the planning/design.
I'm unclear about a few things:
1. How to connect the incoming drain to the existing undersink drain. I've attached a picture of what it looks like under the sink:
ETA: The blue valve is for a silcock on the back of the house. I assume I will need a sump to make use of the kitchen drain?
2. The best way to excavate and fish the lines through the fill between the slab and the bottom of the footings.
I considered breaking up a 2'x2' square in each slab, working from the inside and finishing with bag concrete. If there were a way to do it from the outside (and not have to break up the floor) I'm open to suggestions.
I paid a plumber to do an estimate. He said it would be several thousand and if I don't mind the digging I could do it myself in a weekend and save on most of that. I'm comfortable doing all the labor involved, but not the planning/design.
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