Raised wood floor foundations.
Wood beam span table roof.
This means that some values are slightly more conservative than span tables from other sources if those do not include the amended guidance.
You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.
Span calculator for wood joists and rafters also available for the android os.
For lesser grades spans should be shorter.
Deflection for 30 psf live load.
Also available for the android os.
Limited to span in inches divided by 360.
Keep in mind that these are maximums in other words shortening spans slightly will result in a more solid structure.
Span tables for domestic floor joists to bs 5268 7 1 note.
Tables 13 14.
The tables below give maximum spans for rafters and beams.
Span tables for jois ts and rafters american wood council 4 span tables for joists and rafters american wood council design criteria.
Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.
Our floor joist span tables are based on loadings given in the newer amended version of bs 6399 1.