Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.
Floor joist wood beam span table.
Span tables for domestic floor joists to bs 5268 7 1 note.
Let s expand our house beyond that 17 2 span capability to 24 feet wide.
The tables permit a bearing length of up to 3 5 inches but since 1 5 is probably the worst case that you ll encounter for joist or rafter bearing it s a safe value.
Also available for the android os.
So the house dimensions will now be 24 x 13.
This means that some values are slightly more conservative than span tables from other sources if those do not include the amended guidance.
View joist rafter tables.
Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.
You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.
Span calculator for wood joists and rafters also available for the android os.
Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.