Let me throw another tidbit out. Put some felt asphalt along the top edge of all you beams and joists. Just like tar paper for a roof. Also, you can put this between your pressure treated wood, and your hardware. PT lumber is corrosive to galvanized steel, even hardware with lots of zinc is not immune.
It's a cheap and easy way to keep moisture off of your framing. Here is a link to the option I'm planning to use over at our Amazon affiliate Vycor Deck Protector 4" x 75'
Check out this PDF over at the Grace Vycor site if you want to read up some more.