2 X 10 Floor Joist Span
Common joist spacings for 2 by 10 joists and other dimensional lumber sizes are 12 16 and 24 inches.
2 x 10 floor joist span. Maximum floor joist span for no. 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. 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.
The larger the deck the larger the joists. Joists that are closer together can support more weight which allows the joists to span a longer distance than joists spaced further apart. True floor joist span calculations can only be made by a structural engineer or contractor. Spans in this table were derived from the irc table r502 3 1 2 design criteria.
2x10 to 15 feet and 2x12 to 18 feet. 1 psf lb f ft 2 47 88 n m 2. Span calculator for wood joists and rafters also available for the android os. Live load is weight of furniture wind snow and more.
In general terms joists spaced 16 inches on center can span 1 5 times in feet their depth in inches. Also available for the android os. The lengths and sizes of joists vary depending on the species and quality of the lumber used. Rafter and joist span faq.
2 grade of douglas fir are indicated below. 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. 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.
Dead load weight of structure and fixed loads 10 lbs ft 2. 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. 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. A 2x8 up to 12 feet.