I have dug out a flat area in my garden (gone down about 1 meter) and i have hit the hardest subsoil ever - clay and large stones, completely solid - Now i need to dig out the trench for the foundations for the retaining wall. Is it ok, in some areas to not go so deep with foundations, as the ground is literally solid as a rock? Or should i spend the time with a hammer drill (well those bigger hammer action drill machines, which i have) and chip away until i can get the depth? seems daft to remove solid stone to only fill it back up with concrete, but thought i'd ask
Thanks
Thanks