2x6 Floor Joists With 8 Ft Span

A 2x8 up to 12 feet.

2x6 floor joists with 8 ft span.

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. Floor joist span tables for various sizes and species of wood. 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. The larger the deck the larger the joists.

2x10 to 15 feet and 2x12 to 18 feet. A 2 2x10 can span 10 feet and so on. Joist span and spacing is set by your local building code. 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.

Live load is weight of furniture wind snow and more. 2 grade of douglas fir are indicated below. This a rough guideline. True floor joist span calculations can only be made by a structural engineer or contractor.

1 psf lb f ft 2 47 88 n m 2. Span calculator for wood joists and rafters also available for the android os. However when running spf 2 6 floor joists into the floor joist calculator referenced above you get a maximum span of 9 feet 8 inches with a minimum bearing length of 3 inches at each end on 12 centers. When building a house or even a deck it is important to confirm you have the correct joist sizes spans and spacing before you get started.

A double 2x12 beam can span 12 feet. 1 ft 0 3048 m. The numbers in gray indicate the distance between the support posts. Also available for the android os.

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. The rule of thumb is 6 foot span with a 2 6 on 16 centers.