Wood Floor Joist Span Table

Floor joist span calculator.

Wood floor joist span table.

Next use the buttons in the table to select the maximum length in feet or metres in brackets that your floor joists must span. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. Floor joist span tables for various sizes and species of wood. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.

Limited to span in inches divided by 360. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. Span calculator for wood joists and rafters also available for the android os. Strength live load of 30 psf plus dead load of 10 psf determines the required bending design value.

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. Span tables for jois ts and rafters american wood council 4 span tables for joists and rafters american wood council design criteria. 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. Designing with wood beam span tables.

Deflection for 30 psf live load.