Floor Joist 4x4 Beam Span Table

Distance a joist spans between a beam and a ledger or between beams using no.

Floor joist 4x4 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. So the house dimensions will now be 24 x 13. Span calculator for wood joists and rafters also available for the android os. A 2 2x10 can span 10 feet and so on.

Floor joist span tables for various sizes and species of wood. Joists design properties 6 floor span and load tables 7 8 tips for preventing floor noise 8 allowable holes 9 cantilevers 10 11 roof span and load tables 12 13 framing connectors 14 15 section 2. View joist rafter tables. 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. Span tables for domestic floor joists to bs 5268 7 1 note. The numbers in gray indicate the distance between the support posts. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.

Dimensional lumber deck beam span chart. A double 2x12 beam can span 12 feet. This means that some values are slightly more conservative than span tables from other sources if those do not include the amended guidance. When supporting joists that span 12 feet with no overhang beyond the beam a double ply beam can span in feet a value equal to its depth in inches.

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. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. Our floor joist span tables are based on loadings given in the newer amended version of bs 6399 1.

You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. 2x6 if joists are spaced. Also available for the android os. 2 and better southern pine or douglas fir joist.