Floor Joist Span Chart

Floor joist span use this table to determine the maximum lengths of floor joists based on species of lumber joist spacing and joist size.

Floor joist span chart. 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. The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel. This chart is for basic reference only.

1 psf lb f ft 2 47 88 n m 2. 2 grade of douglas fir are indicated below. Dead load is the weight of the structure and any fixed items.

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. Floor joist span tables for various sizes and species of wood. Of bearings and is based on uniformly loaded joists.

Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. 1 ft 0 3048 m. Dead load weight of structure and fixed loads 10 lbs ft 2.

Also available for the android os. 9 16 tji joists design properties 6 floor span and load tables 7 8 tips for preventing floor noise 8 allowable holes 9 cantilevers 10 11 roof span and load tables 12 13. The maximum span is measured o c.

The spans are based on simple span joists. Tji joist specifier s guide tj 4000 july 2019. The floor joist spacing is the distance between the centers.