A 2 2x10 can span 10 feet and so on.
2x6 floor board span.
If you use 5 4 decking joists must be no farther apart than 16 inches.
View joist rafter tables.
For example a joist made from doubled 2 x 6s can span a distance about 25 percent more than a single 2 x 6 but a 2 x 12 can span about 80 percent more than a 2 x 6 even.
A double 2x12 beam can span 12 feet.
1 ft 0 3048 m.
Dimensional lumber deck beam span chart.
See our complete chart of floor joist size span and spacing requirements before you build.
When supporting joists that span 12 feet with no overhang beyond the beam a double ply beam can span in feet a value equal to its depth in inches.
We ve included 2x6 2x8 2x10 and 2x12 joist spans and more.
The strength of a given joist board is most dramatically affected by the board s top to bottom width.
Dead load weight of structure and fixed loads 10 lbs ft 2.
2x6 joists should only be used on ground level decks that do not require and will not provide for any guards.
Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.
The width is considerably more important than the thickness of a board.
Span calculator for wood joists and rafters also available for the android os.
2 grade of douglas fir are indicated below.
Also available for the android os.
Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.
Decking made of 2x4s or 2x6s can span up to 24 inches.
If you will run decking at an angle you might need to put the joists closer together.
Live load is weight of furniture wind snow and more.
Decking boards span from joist to joist.
Again it s important to know your local codes.
For upper level decks 2x10 is recommended as the minimum size to use for strong guard post connections.
For conventional guardrail post installation bolted to the side of the framing larger framing will provide more strength in the rails.
