Rafter Span Floor Joist Span Table

Deflection for 30 psf live load.

Rafter span floor joist span table.

Joist span table use these tables to determine floor joist spans based on grade of lumber size of joist floor joist spacing and a live load of 30 lbs ft 2 or 40 lbs ft 2 these tables can also be used to determine deck joist span. Limited to span in inches divided by 360. Tables listing maximum spans for southern pine joists and rafters are detailed below. Our floor joist span tables are based on loadings given in the newer amended version of bs 6399 1.

Ceiling joist span use this table to determine the maximum lengths of ceiling joists based on species of lumber joist spacing and joist size. 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. 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. Span tables for jois ts and rafters american wood council 4 span tables for joists and rafters american wood council design criteria. Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall. Floor joist span tables for various sizes and species of wood.