Floor Span For 2x12

Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.

Floor span for 2x12.

Also available for the android os. 1 has a higher strength than no. This span table excerpt shows two possible sizes of built up floor beams 2 x 10 and 2 x 12. We ve included 2x6 2x8 2x10 and 2x12 joist spans and more.

The numbers in gray indicate the distance between the support posts. 3 due to fewer knots and defects in the grain of the wood. True floor joist span calculations can only be made by a structural engineer or contractor. Three other grades no.

Hem fir 2 joists with a live dead load of 40 10 psf. The full table shows more lumber sizes. See our complete chart of floor joist size span and spacing requirements before you build. A double 2x12 beam can span 12 feet.

2 grade of douglas fir are indicated below. Span calculator for wood joists and rafters also available for the android os. Boards cut and graded as structural select allow the longest spans. 1 ft 0 3048 m.

Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. 1 psf lb f ft 2 47 88 n m 2. A 2 2x10 can span 10 feet and so on. 3 allow shorter spans.

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. Floor joist span tables for various sizes and species of wood. 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. It also shows the maximum that the beam can span for various numbers of such pieces of lumber built together this is indicated by 3 ply 4 ply and 5 ply.

Maximum floor joist span for no. Spans in this table were derived from the irc table r502 3 1 2 design criteria. Live load is weight of furniture wind snow and more. Dimensional lumber deck beam span chart.