Maximum Floor Joist Span 2x12

2 lumber grade all joists are bridged sample floor joist span table.

Maximum floor joist span 2x12. 1 psf lb f ft 2 47 88 n m 2. The table excerpt above is simply a sample and may not be valid for your region. The table below shows the maximum span for a floor joist with the following designations. For example in the joist span table below the highlighted cell shows that 2 x 8 southern yellow pine joists that have a grade of 2 and are spaced 24 apart can have a maximum span of 10 feet 3 inches 10 3 if designing for a live load of 40 lbs ft 2.

2 grade of douglas fir are indicated below. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. True floor joist span calculations can only be made by a structural engineer or contractor. 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.

Douglas fir larch lumber species no. See our complete chart of floor joist size span and spacing requirements before you build. Live load is weight of furniture wind snow and more. Dead load weight of structure and fixed loads 10 lbs ft 2.

We ve included 2x6 2x8 2x10 and 2x12 joist spans and more. Span calculator for wood joists and rafters also available for the android os. 1 ft 0 3048 m. While every effort has been made to insure the accuracy of the information presented and special effort has been made to assure that the information reflects the state of the art neither the west coast lumber inspection bureau the american wood council nor its members assume any responsibility for any particular design prepared from this online span calculator.

The numbers in gray indicate the distance between the support posts. 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. 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 2 2x10 can span 10 feet and so on.

These tables can also be used to determine deck joist span. Span entries are listed for 2 6 through 2 12 joists and 12 in 16 in and 24 in. 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.

Also available for the android os.