06-05-2022, 07:47 PM
Most important thing is contact surface area. A trench merely helps guarantee that the whole thing stays wet, which helps, and it might take less concrete, with the whole thing finished at grade to avoid creating a tripping hazard. Pressure washer is less work than a chisel, and there's bound to be a nice low spot for it.
Same can be done for a house, I think the NEC stipulates 20' of wire in a concrete foundation. There's a whole other thread on this.
Same can be done for a house, I think the NEC stipulates 20' of wire in a concrete foundation. There's a whole other thread on this.