how deep are drain pipes in the slab typically? Do they run horizontally in the slab, or below the slab and only comes up vertically at the connection point?
I am doing a bathroom remodel and the is charging a lot to do the concrete work. So I'm thinking about renting a jackhammer and doing the trenching myself, but I wanna make sure i don't hit a drain pipe. Any tips on locating the drain pipe without one of those fancy cameras?