Wood Floor Joist Span Table

Deflection for 30 psf live load.

Wood floor joist span table.

Designing with wood beam span tables. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. 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. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.

Next use the buttons in the table to select the maximum length in feet or metres in brackets that your floor joists must span. Floor joist span calculator. Span calculator for wood joists and rafters also available for the android os. View joist rafter tables.

Strength live load of 30 psf plus dead load of 10 psf determines the required bending design value. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. Floor joist span tables for various sizes and species of wood. To use the joist span calculator below first select the species of lumber you will use for your construction project from the drop down list.

Also available for the android os.