Floor Joist 4x4 Beam Span Table

Span calculator for wood joists and rafters also available for the android os.

Floor joist 4x4 beam span table.

Span tables for domestic floor joists to bs 5268 7 1 note. This means that some values are slightly more conservative than span tables from other sources if those do not include the amended guidance. 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. 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.

2x6 if joists are spaced. The numbers in gray indicate the distance between the support posts. 2 and better southern pine or douglas fir joist. Dimensional lumber deck beam span chart.

You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. A 2 2x10 can span 10 feet and so on. 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. 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.

A double 2x12 beam can span 12 feet. View joist rafter tables. Distance a joist spans between a beam and a ledger or between beams using no. Our floor joist span tables are based on loadings given in the newer amended version of bs 6399 1.

Floor joist span tables for various sizes and species of wood. 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. 2x6 if joists are spaced.

Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. True floor joist span calculations can only be made by a structural engineer or contractor. 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.