Hey all, I'm putting plans together to build a deck out back of my house. I plan to do a floating design. The struggle I'm having is how to support it because there is an existing patio. It's constructed with a 6" concrete slab (yes, 6") with brick on top, grouted in. My thought is to use deck blocks on top of the concrete, and buried concrete piers where it extended over the yard. Any thoughts on this design?