I have seen the helical piers utilized for repair of a crane rail foundation. The helical piers can be galvanized for protection against corrosion. The jacking is typically done by hand and can be incredibly precise, in fact on the above project, the contractor accidentally lifted the...
Could the use of #57 stone be placed under footings where
loose soils were removed? The argument would be that fines
could wash into the stone and potentially undermine the
foundation?