Floor joist span tables for various sizes and species of wood 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.
Floor joists timber framing span tables.
Also available for the android os.
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.
These tables can also be used to determine deck joist span.
Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.
Straight line interpolation shall be permitted for intermediate spans and design values.
The calculated spans assume fully supported members properly sheathed and nailed on the top edge of the joist or rafter.
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.
Next use the buttons in the table to select the maximum length in feet or metres in brackets that your floor joists must span.
View joist rafter tables.