Floor Joist Spans 2x6

1 psf lb f ft 2 47 88 n m 2.

Floor joist spans 2x6. 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. We ve included 2x6 2x8 2x10 and 2x12 joist spans and more. 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. Enter a span for the joist.

Finally select a type of lumber. 2 pine is the the most common so the field is pre selected at that. Simple span joists and rafters with uniform load. 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. Maximum floor joist span for no. The larger the deck the larger the joists. 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.

Span calculator for wood joists and rafters 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. View joist rafter tables. 2 grade of douglas fir are indicated below.

This will be slightly less than the length of the board. If a room is 10 inside to inside and the joists are cut 10 7 so they will bear fully on both walls then the span will be 10. True floor joist span calculations can only be made by a structural engineer or contractor. For best results refer to our wood and composite deck joist span table.

Span entries are listed for 2 6 through 2 12 joists and 12 in 16 in and 24 in. Dead load weight of structure and fixed loads 10 lbs ft 2. See our complete chart of floor joist size span and spacing requirements before you build.