This has been asked before but without a detailed answer. I want to install a ledger board on the foundation, not the brick.
Can I run joists off the ledger board like normal, then in the opposite direction build another set of 2"*10" joists ontop of those ones?
Not an answer. Frame challenge solution:
My code requires 8" x 4" x 1/2" Steel Angled Deck Brackets attached to the posts to support the doubled up ledger (edge beam). I'd use more of those attached to the foundation to support the ledger at the house, and then through-bolt it into the veneer for pullout.
I'm not sure how many you'd need as this is kinda ad-hoc. But if you laminated the ledger at the house (to double that up too), you'd need less... That may actually be a requirement for a ledger hung between, what is essentially in this case, pockets. So you need one every... w/e the max distance is between pockets for a ledger that's stood-off from the building. Presumably that's the same distance that your edge beam can be between posts. Which is never more than 8', so you need at least three.
Page 32 of my code book shows it like you have drawn, but with those beams I'm talking about in the comment. And are probably assumed to be set into pockets of a masonry structure, but I don't think you want to do that to your foundation. As it is, my plan requires two ~1" holes drilled into concrete for every bracket, which violates the foundation's water-tightness. But it's above grade, so...
I understand not wanting to make a freestanding deck with all the footings involved. But since this is close to the ground, a floating deck will work fine. The rules vary somewhat by jurisdiction, so you need to check that you (a) can install a floating deck, (b) that your desired deck height is at or below the maximum height for a floating deck, and (c) determine whether or not you need any permits.
Many jurisdictions allow floating decks up to a particular size without any permit at all. That is in contrast to a regular deck which pretty much always requires a permit, for very good reasons.
