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. 2x6 if joists are spaced. 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. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. This means that some values are slightly more conservative than span tables from other sources if those do not include the amended guidance.

2 and better southern pine or douglas fir joist. 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. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. 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.

Our floor joist span tables are based on loadings given in the newer amended version of bs 6399 1. 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. 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.

Design properties 16 floor span and load tables 17 allowable holes 18 roof span and load tables 19 cantilevers 20 21. View joist rafter tables. The user enters the member geometry adds loads holes and other relevant data and then selects a product for analysis. Also available for the android os.

It is simple to use yet flexible enough to analyze a variety of common applications. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. Floor joist span tables for various sizes and species of wood. Bc calc performs engineering analysis to help our customers size beams joists columns studs and tall walls for their building projects.

The numbers in gray indicate the distance between the support posts. 2x6 if joists are spaced. A double 2x12 beam can span 12 feet. Span tables for domestic floor joists to bs 5268 7 1 note.