So the house dimensions will now be 24 x 13.
Floor joist wood beam span table.
Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.
Also available for the android os.
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.
You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.
Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.
Our floor joist span tables are based on loadings given in the newer amended version of bs 6399 1.
Span calculator for wood joists and rafters also available for the android os.
View joist rafter tables.
Table 9 1 in span tables for joists and rafters figure 5 gives a required compression value of 237 psi for a span of 16 feet and bearing length of 1 5 inches.
Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.
Let s expand our house beyond that 17 2 span capability to 24 feet wide.