Recommended beam joist spans for deck framing.
How to proct deck floor joists.
A deck is a man made platform that is normally connected to a house.
The larger the deck the larger the joists.
For best results refer to our wood and composite deck joist span table.
A deck joist is the deck support beam that holds the deck floor boards securely onto the deck.
Deck joists last longer if you protect them from rot.
Nine joists will be needed for the 16 foot width.
In typical deck construction with a ledger on one side of the joist and beam on the other the size of the joists is driven by the size of the deck and based on the general maximum spans mentioned above.
Most decks are made of wood and are suspended above the ground supported by large post and beams.
The same statement applies to all structural framing members in your house but most of them aren t as exposed to moisture as deck joists.
I prefer to double the outside joists as do some deck builders which adds 2 joists for a total of 11.
The bigger you make your deck the more you ask of the framing timbers that hold up the deck s structure and the joists and beams that support the.
That means these joists can span the 12 foot depth of the deck and the beam can be located at the perimeter.
While beams are vertical joists lay horizontally on top of each beam to provide a sturdy level surface to lay your decking materials across.