The figures are based on quality materials.
Wood beam span table roof.
Keep in mind that these are maximums in other words shortening spans slightly will result in a more solid structure.
You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.
Deflection for 30 psf live load.
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.
Span tables for jois ts and rafters american wood council 4 span tables for joists and rafters american wood council design criteria.
Span tables for domestic floor joists to bs 5268 7 1 note.
For lesser grades spans should be shorter.
This means that some values are slightly more conservative than span tables from other sources if those do not include the amended guidance.
Strength live load of 30 psf plus dead load of 10 psf determines the required bending design value.
Raised wood floor foundations.
Span calculator for wood joists and rafters also available for the android os.
Limited to span in inches divided by 360.
Also available for the android os.
The tables below give maximum spans for rafters and beams.