Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.
Roof joist span table.
1 inch 25 4 mm 1 foot 304 8 mm 1 pound per square foot 0 0479kpa.
Also available for the android os.
Table r802 4 1 ceiling joist spans for common lumber species uninhabitable attics without storage live load 10 psf l δ 240 check sources for availability of lumber in lengths greater than 20 feet.
View joist rafter tables.
You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.
Span tables use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.
For each application a pdf download is available.
Span calculator for wood joists and rafters also available for the android os.
Joist and rafter span tables.
Tables listing maximum spans for southern pine joists and rafters are detailed below.
These 46 tables are based upon design values for visually graded southern pine dimension lumber that became effective june 1 2013.