The usual technique is to bolt it to the stair stringers the frame.
How to build deck stairs without a landing. Attach the stringers to the deck using angle brackets and 3 galvanized deck screws. Below the living room floor you can still open the window for ventilation but then you will need a railing around the deck as it will be 30-36 inches above grade. Use L brackets and screws to attach everything.
Learn how to build stairs using 2x12 stringers. That tells you that 15 risers will be needed. This image shows a contemporary technique where solid stringers and open risers are set higher up against the fascia and angle brackets secure them to the deck.
Deckstair construction varies but the general requirements are consistent. The bottom post is the toughest post to make solid when you build outdoor stair railings. After you connected the first stringer then follow the same process for the rest of the stringers and risers.
Proper footing support and an adequate landingRegardless of the stair run and number of treads the stairway needs a footing at the bottom to support the stringersthey cant just rest on the ground. It will not shift under weight and will require almost no upkeep. When the deck is freestanding and not connected to the house then the stair footing and all other footings for the deck only needs to be 12 in.
108 divided by 7 equals 15428. A mid level landing is required as per design specifications. Instead the door is simply installed one step up in the wall above the beam.
Suppose the total distance from bottom floor to top floor including the thickness of the second floor is about 108 inches. Anchor the toe-kick to the pad using lag screws and masonry anchors. Then we need to divide 108 by 15 and we get around 7 316 inches or the exact height each riser needs to be.