If your cut doesn t need to be exact use a cold chisel and hand sledge to cut the concrete.
How to cut poured concrete wall.
Ignore any rebar you come across and just break the concrete free of the metal.
Once both sides ware cut he used a sledge hammer and some wedges to knock the wall out of position and into the pre dug hole awaiting outside.
Score the length of the cut three or four times with the chisel.
This process took approximately one hour to complete.
These joints should be cut in a quarter of the depth of the concrete slab during the very beginning of the curing process within 24 hours of the initial pour.
Measure from the edge of your concrete footing to the point where the outside face of your wall will be.
Start at the top of the opening and cut carefully along the lines you made on the wall.
Line up the blade of a concrete saw over the marks on one side of the wall.
I dug the dirt outside the foundation wall 10 deeper than i would normally dig.
Close up of cutting a door in a concrete foundation with a wet saw.
A circular saw with a masonry blade can also be used to either score or completely cut through the block.
So if your wall is 8 inches wide your two nails should be 8 inches apart.
Drive a nail into the concrete here.
Break the concrete wall into small chunks with your preferred tool and let the debris fall to the ground as you work.
Measure out from that nail to where the other face of your wall will be and place another nail.