Floor Joist Wood Beam Span Table

Also available for the android os.
Floor joist wood beam span table. The widest span in the floor joist span table in part 2 of this tutorial module showed that floor joists can span 17 2 if they are 2 x 12s spaced 12 o c. 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. Floor joist span tables for surveyors floor construction. 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.
This means that some values are slightly more conservative than span tables from other sources if those do not include the amended guidance. You need to measure the complete span of your floor joists together with the distance between them the centres and the size of the timbers. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. View joist rafter tables.
So the house dimensions will now be 24 x 13. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. Let s expand our house beyond that 17 2 span capability to 24 feet wide. True floor joist span calculations can only be made by a structural engineer or contractor.
Span tables for domestic floor joists to bs 5268 7 1 note. Span calculator for wood joists and rafters also available for the android os. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. This sample table gives minimum floor joist sizes for joists spaced at 16 inches and 24 inches on center o c for 2 grade lumber with 10 pounds per square foot of dead load and 40 pounds of live load which is typical of normal residential construction.
This should be compared to the table. Our floor joist span tables are based on loadings given in the newer amended version of bs 6399 1.