I don't really have a grade problem, it's a pole barn basically, it has 4x2" welded galvanized 8-ga. steel structure/frame, with 8, 8' deep x 12" round concrete pillars, that its sitting on & anchored to {I could dig down 6', if I wanted too}, there's bed rock under all that, instead of a footings, the pillars were the way to go, that whole area was decomposed granite fill, not the best for a minimum of 90% compaction, with road base gravel over it, except the one side on the right, it' on a concrete & rebar reinforced cinderblock retaining wall, around the whole side & back of the property, with 1/2" redhead anchors holding it to the wall.... I am going to remove some of the road base gravel, about 8", before I pour the concrete & form it up under the galvanized sill plates, putt pressure treated lumber under them, pour concrete up to that level, I still need to also dig electrical & plumbing trenches, install pipe & conduit, then pour at-least a 6" thick rebar reinforced concrete floors, under the sills, install a 4 post lift on the side with 14'+ ceiling.... if you can understand what I mean...