Yes, the new cocktail they use to make it "pressure treated" has reports of rotting out aluminum joist hangers. Maybe they've changed it, maybe not. I would recommend sealing it (epoxy, paint) and using a piece of rubber between the two materials.
“Americans have the right and advantage of being armed, unlike the people of other countries, whose leaders are afraid to trust them with arms.” – James Madison.
good stuff .... thanks all ... I'll have my brother in law veiw these threads .. see what he wants to do .. Many of you know I posted this over there too .. One gent said his floor was like 20yrs. old .. attributed it to keeping his boat covered religiously ..Do you guys throw a cover over your boat when not in use ??