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So 4X4 posts, 2X8″ joist probably, and 5/4 decking about half way notched in (as deep as a circular saw will get me).
Fabric won’t save any money over this plus it blows around and decays. The benefit to the angled wood instead of laid flat like a deck is that I don’t get additional snow weight on top of this (it will be on top of a deck). Also it gives the ideal angle against the sun when the sun is perpendicular to it and, finally, as the sun swings around at late day and sends its light parallel to the slats, they still offer substantial shade (though not complete).
Feel free to post thoughts on if this is awesome or terrible! Thanks!