What Is The Maximum Span For A 2x10 Floor Joist

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.

What is the maximum span for a 2x10 floor joist. 19 2 8 7. 1 psf lb f ft 2 47 88 n m 2. True floor joist span calculations can only be made by a structural engineer or contractor.

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 elements will greatly affect how far you can span your joists. A 2x8 up to 12 feet.

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. Span calculator for wood joists and rafters 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.

Douglas fir 2 by 10 joists graded as structural select allows joist spans up to 21 feet for a live load of 30 pounds per square foot when spaced 12 inches apart 19 feet 1 inch for 16 inch spacing and 16 feet 8 inches for 24 inch spacing. 1 ft 0 3048 m. 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. Joist size joist spacing maximum span. Maximum span of 2x10 floor joist maximum span of 2x12 floor joist the most important design choices to consider when building a home are the species and grade of wood that is being used as well as joist size and spacing.

Maximum floor joist span for no. These tables can also be used to determine deck joist span. 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.