Since your yard is sloped, one side of your deck will be above the ground level. Continue the grade beams across the entire deck area anyway. It can get difficult trying to match up a wood post to it.

Build a Freestanding Cantilevered Deck Supported by Parallel Beams. Around Alabama, where EHT is headquartered, most decks are connected to the side of a house with a ledger board fastened to the ...

I had to replace a damaged composite decking board on my ground-level deck and was shocked at what I discovered. On the underside of the decking, mushrooms and fungus were growing out of the board!