Quote Originally Posted by Christos View Post
It is on the design plan to have piers for the columns and the depth of the fill will be added to piers to ensure that the piers will be in original ground. I have already discussed this with the builder and it was included as part of the quote for concrete.
That is fine but just keep in mind the rest of the slab will be unsupported and would normally be designed as a suspended slab on fill in those areas so typically the slab thickness and reinforcement would be increased in that area.