Wood Beam Span Table Roof

Span calculator for wood joists and rafters also available for the android os. Keep in mind that these are maximums in other words shortening spans slightly will result in a more solid structure. Span tables for jois ts and rafters american wood council 4 span tables for joists and rafters american wood council design criteria.

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Our floor joist span tables are based on loadings given in the newer amended version of bs 6399 1.

Wood beam span table roof.

Raised wood floor foundations. For lesser grades spans should be shorter. Span tables for domestic floor joists to bs 5268 7 1 note. Strength live load of 30 psf plus dead load of 10 psf determines the required bending design value.

Deflection for 30 psf live load. This means that some values are slightly more conservative than span tables from other sources if those do not include the amended guidance. Also available for the android os. 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. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. Limited to span in inches divided by 360. The tables below give maximum spans for rafters and beams.

Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. The figures are based on quality materials.