I am digging the footings for my extension (it should have been the start of the summer !), and about 3 metres of the new foundation is in the same location as the old foundations. It turns out these are 3 brick courses down and concrete about 250mm deep 600 wide. Since they are half as deep down as the new ones, and only about 250mm thick, I am fairly sure the BCO will want them removed, rather than over- pouring etc. I dug out a small area in another location with my SDS drill, drilling holes though and then chiseling, but it was very hard going and I think I might need more heavy-duty tools to do this job. So, what tools should be used to break up and extract a concrete slab
3000 x 600 x 250mm ? Thanks, Simon.