Wood Floor Joist Span Calculator

You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.

Wood floor joist span calculator. Joist calculator tutorial you. Our floor joist span tables are based on loadings given in the newer amended version of bs 6399 1. Joist and rafter span tables. The load on an outside wall with clear span trusses is exactly half the load on each wall.

For example joists spaced 16 inches from the center of the joist next to it can span 1 5 times in feet the depth of their inches. Ready to start calculating how much lumber you ll need for your joists. Floor joist span tables calculator. Next use the buttons in the table to select the maximum length in feet or metres in brackets that your floor joists must span.

Also available for the android os. This means that some values are slightly more conservative than span tables from other sources if those do not include the amended guidance. 2x6 over a 14 span doityourself community forums. To learn more about deck joist sizing spacing and allowable span reference this chart.

Enter a span for the joist. 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. Span calculator for wood joists and rafters also available for the android os. Deck joist span chart twhouse org.

If a room is 10 inside to inside and the joists are cut 10 7 so they will bear fully on both walls then the span will be 10. Span tables for deck joists beams and flooring giving. For example if building is 24 x 24 and has trusses and the load on the roof will be for 30 lb snow load and a ceiling with no storage will total out like this. Floor joist span calculator 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 domestic floor joists to bs 5268 7 1 note. This will be slightly less than the length of the board. Finally select a type of lumber. As a rule the larger the deck the larger the joists.