2x12 Floor Joist Span Chart

Find out how far your deck joists can span when framing your deck.
2x12 floor joist span chart. Tree sawed and engineered. Choose from multiple types of decking and from 2x6 up to 2x12 joists. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. Floor joist span tables for various sizes and species of wood.
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. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. This page focuses on the tree sawed variety. Kiln dried number 2.
Live load floor joist span tables in chapter 7 of the state residential code based on the 2012 international residential code. Also available for the android os. Span tables use these tables to determine rafter span ceiling joist span and floor joist span. He goes to the 40 lb.
Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. 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. Those tables are intended for interior floors not decks.
Joists for use in residential framing applications fall into two different categories. Decks get wet and may be framed with incised treated lumber so. And that s just what many deck builders designers and inspectors have probably done for years. We ve included 2x6 2x8 2x10 and 2x12 joist spans and more.
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. Live load is weight of furniture wind snow and more. Types of floor joists. The floor joist span chart and building code requirements are based on data from the 2012 international residential code using number 2 lumber.
See our complete chart of floor joist size span and spacing requirements before you build. 2 grade of douglas fir are indicated below. 1 psf lb f ft 2 47 88 n m 2. View joist rafter tables.