Layout Main Deck Joists

What happens here

The initial phase involves laying out and securing the primary pressure-treated lumber joists that form the main structural support of the deck. Workers measure, cut, and fasten these joists to the ledger board attached to the house and to the outer beam(s) or rim joists. This establishes the basic rectangular or curvilinear shape of the deck's subframe. The joists are typically spaced 12 or 16 inches on center, depending on the decking material and load requirements, ensuring a strong foundation for the deck surface.

Goal: Workers install the primary floor joists for the deck structure, establishing the basic framework.