Lumber Span Floor Joist Span Chart

The table excerpt above is simply a sample and may not be valid for your region.

Lumber span floor joist span chart.

Of bearings and is based on uniformly loaded joists. While every effort has been made to insure the accuracy of the information presented and special effort has been made to assure that the information reflects the state of the art neither the west coast lumber inspection bureau the american wood council nor its members assume any responsibility for any particular design prepared from this online span calculator. View joist rafter tables. Roof rafter span use this table to determine the maximum lengths of roof rafters based on species and grade of lumber spacing dimensions load and slope.

The spans are based on simple span joists. Maximum floor joist span for no. For southern pine. 2 lumber grade all joists are bridged sample floor joist span table.

Of visually graded southern pine dimension lumber maximum spans in feet inches. Live load is weight of furniture wind snow and more. Looking at this table you will see there is a choice in the size of floor joist 2 x 6 2 x 8 2 x 10 or 2 x 12 and there is a choice in the joist spacing 12 16 or 14. Dense elect structural select structural nondense structural no 1 dense no 1 nondense no 2 dense.

Floor joist span tables for various sizes and species of wood. 1 ft 0 3048 m. 2 grade of douglas fir are indicated below. Floor joist span use this table to determine the maximum lengths of floor joists based on species of lumber joist spacing and joist size.

Table 1 floor joists 30 psf live load 10 psf dead load 360 deflection. 1 psf lb f ft 2 47 88 n m 2. Effective june 1 2013. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.

Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. Also available for the android os. But the 2015 irc included a new one table r507 5 that will make it easy for deck builders to spec a joist size for a given span and joist spacing. Dead load weight of structure and fixed loads 10 lbs ft 2.

Span calculator for wood joists and rafters also available for the android os. The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel.