[tevake]

Can't really comment on the framing, some good tips above tho.

I replaced 2x6 fir decking with 1x6 Ipe over joist on 16inch centers. The new deck is very stiff, no flex is noticeable. That Ipe is very stiff, and probably close to as heavy as the 2x6 fir. Edge Fastened the decking with stainless screws thru plastic biscuits. So only had to fasten thru the deck boards at butt joints and the edge boards. Set those screws well in to allow for wood plugs.

The Ipe is very weather and bug resistant, still in good condition after ten years in place, this is on Kauai with rain exposure on about half of the deck.

Used Kumaru for interior flooring, also very hard and stiff. Just not as weather resistant as the Ipe, which is not pleasant when dealing with its dust from cutting/ sanding.

Not sure about the beautiful tiger wood, think it may be best suited for indoor application.

Would cover the top of the joist before laying the decking.

Very satisfying enjoying your new deck built with select quality materials.

Cheers Richard