Ipe bench for deck
I got a bunch of what I believe to be Ipe from a friend. I plan to prep it for a bench, specifically a horizontal slat style. For simplicity sake, I was planning on using something like a 3" square tube as the vertical posts (going into the cement footings under the deck) with flatstock welded to it for the "T" support, one at each end of the bench. Then my slats will be attached to these T posts. My concerns were:
1) can I simply lag screw these to the metal and call it good or will the outdoors destroy this simple attachment method?
2) what's the span that can safely be used as a bench slat (these planks are about an inch thick and maybe 3 inches wide)?