Just enclosed my deck and bought porcelain tile. Need to know if the structure of the deck can support the weight. Deck is 24×10, 2×8 stringers on 16 inch centers. 6×6 support posts about 7 ft apart set about 8 feet out (rather than being on outer edge). With the weight of subfloor and leveling products and heavy (but rather thin) porcelain tile…is there a calculation to figure out what is ok?
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I would talk to an engineer. From your description, it seems like there would be too much movement because of the cantilever and your grout and tile would crack.
I thinks there might be some calculation needed to fig out the strength of the surface