2x12 Span Floor Joist

1 ft 0 3048 m.

2x12 span floor joist.

The larger the deck the larger the joists. 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. 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. A double 2x12 beam can span 12 feet.

1 psf lb f ft 2 47 88 n m 2. A 2x8 up to 12 feet. See our complete chart of floor joist size span and spacing requirements before you build. A 2 2x10 can span 10 feet and so on.

Dimensional lumber deck beam span chart. Dead load weight of structure and fixed loads 10 lbs ft 2. The numbers in gray indicate the distance between the support posts. 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.

Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. 2 grade of douglas fir are indicated below. True floor joist span calculations can only be made by a structural engineer or contractor. Joist span table use these tables to determine floor joist spans based on grade of lumber size of joist floor joist spacing and a live load of 30 lbs ft 2 or 40 lbs ft 2 these tables can also be used to determine deck joist span.

Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. Spans in this table were derived from the irc table r502 3 1 2 design criteria. Span calculator for wood joists and rafters also available for the android os. Maximum floor joist span for no.

Floor joist span tables for various sizes and species of wood. 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. Also available for the android os. Live load is weight of furniture wind snow and more.

Span entries are listed for 2 6 through 2 12 joists and 12 in 16 in and 24 in. 2x10 to 15 feet and 2x12 to 18 feet.