Longest Span Of 2 X 10 Floor Joists

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.

Longest span of 2 x 10 floor joists. Span calculator for wood joists and rafters also available for the android os. Table 9 2 adjustment factors for alternate loading and spacing conditions for determining required com pression perpendicular to grain design values f c for joists and rafters. These tables can also be used to determine deck joist span. While most residential construction uses 2x8 joists with 16 inch spacing there are many other factors you need to consider when determining the proper joist span length.

1 ft 0 3048 m. 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. 1 psf lb f ft 2 47 88 n m 2. Also available for the android os.

Span entries are listed for 2 6 through 2 12 joists and 12 in 16 in and 24 in. Spaced at 12 inches the joist may only span 16 feet 8 inches. 4 see a 1 3 for 2 span floor joist requirements. Joist span and spacing is set by your local building code.

The maximum span for a 2 x 10 floor joist is up to 21 feet depending on several factors. 2 grade of douglas fir are indicated below. Dimensional lumber deck beam span chart. At 16 inch spacing 15 feet 2 inches and 13 feet 3 inches at 24 inch spacing.

Loads psf on center spacing in. Live load is weight of furniture wind snow and more. Additionally the load that the floor needs to support is also a consideration. The width is considerably more important than the thickness of a board.

The numbers in gray indicate the distance between the support posts. 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 though it has the same amount of wood as a doubled 2 x 6. Use a joist span table such as those found in the resources section to determine the maximum 2 by 10 joist spans for other species and lumber grades. Dead load weight of structure and fixed loads 10 lbs ft 2.

Maximum floor joist span for no. A 2 2x10 can span 10 feet and so on. One must take into consideration the spacing of the joists and type of wood used. A double 2x12 beam can span 12 feet.