Span calculator for wood joists and rafters also available for the android os.
Floor joist spans 2x6.
2 grade of douglas fir are indicated below.
Span ft 1 5 2 0 2 5 3 0 3 5 2 30 22 18 15 13 4 59 44 36 30 25 6 89 67 53 44 38 8 119 89 71 59 51 10 148 111 89 74 63 12 178 133 107 89 76 14 207 156 124 104 89 16 237 178 142 119 102 18 267 200 160 133 114.
2 pine is the the most common so the field is pre selected at that.
See our complete chart of floor joist size span and spacing requirements before you build.
The larger the deck the larger the joists.
True floor joist span calculations can only be made by a structural engineer or contractor.
Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.
1 psf lb f ft 2 47 88 n m 2.
This will be slightly less than the length of the board.
Finally select a type of lumber.
Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.
The illustrations one for cantilever joists and one for flush rim beam hung joists point out where joist span measurements are taken from the saddle of the ledger mounted joist hanger to the center of a dropped beam or saddle of the.
1 ft 0 3048 m.
Simple span joists and rafters with uniform load.
Span entries are listed for 2 6 through 2 12 joists and 12 in 16 in and 24 in.
For best results refer to our wood and composite deck joist span table.
This sample table gives minimum floor joist sizes for joists spaced at 16 inches and 24 inches on center o c for 2 grade lumber with 10 pounds per square foot of dead load and 40 pounds of live load which is typical of normal residential construction.
View joist rafter tables.
Also available for the android os.
Dead load weight of structure and fixed loads 10 lbs ft 2.
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.
We ve included 2x6 2x8 2x10 and 2x12 joist spans and more.
Maximum floor joist span for no.
