Strength live load of 30 psf plus dead load of 10 psf determines the required bending design value.
Wood beam span table roof.
Tables 13 14.
Tables providing size selections for various beam spans and loading combinations for southern pine dimension lumber and southern pine glued laminated timber are available for the following applications.
Raised wood floor foundations.
The figures are based on quality materials.
Our floor joist span tables are based on loadings given in the newer amended version of bs 6399 1.
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 calculator for wood joists and rafters also available for the android os.
Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.
The tables below give maximum spans for rafters and beams.
For lesser grades spans should be shorter.
Also available for the android os.
You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.
Span tables for domestic floor joists to bs 5268 7 1 note.