The table includes spans for.
Treated pine deck joists.
The larger the deck the larger the joists.
The sub floor joists and bearers are treated pine.
The decking is 90 mm wide and 22 mm deep.
The decking recieved 5 coats of cabots deck oil both top and bottom.
It has a much higher resistance to moisture than ordinary lumber even more than rot resistant types like redwood and cedar.
But the 2015 irc included a new one table r507 5 that will make it easy for deck builders to spec a joist size for a given span and joist spacing.
Decks get wet and may be framed with incised treated lumber so spans may have to be adjusted.
The deck is 10 meters long and 4 2 meters wide.
Use pressure treated lumber when you install the joists.
Please see an example of 450mm joist spacing below with your joist spacing determined you can use the 450mm column to determine what size timber you will need for your joists.
The images provided show our home prior to and after i fitted this deck.
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.
All materials were new from bunnings nerang.