Strength live load of 30 psf plus dead load of 10 psf determines the required bending design value.
Wood roof truss span tables.
The load span tables shown below demonstrate only a tiny subset of the possible combinations available with trussteel cfs roof trusses.
Floor truss span tables.
Top chord dead load 10 psf.
Roof truss span tables alpine engineered products 15 top chord 2x4 2x6 2x6 2x4 2x6 2x6 2x4 2x6 2x6 2x4 2x6 2x6 bottom chord 2x4 2x4 2x6 2x4 2x4 2x6 2x4 2x4 2x6 2x4 2x4 2x6 2 12 24 24 33 27 27 37 31 31 43 33 33 46 2 5 12 29 29 39 33 33 45 37 38 52 39 40 55 3 12 34 34 46 37 39 53 40 44 60 43 46 64 3 5 12 39 39 53 41 44 61 44 50 65 47 52 70.
Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.
Limited to span in inches divided by 360.
You can use sbca s span charts to roughly determine truss sizes available.
Keep in mind that these tables are for estimations only.
These allowable spans are based on nds 91.
72 5 0 mi ni m u m girder floor truss floor truss jacks a a bearing wall girder floor truss floor truss jacks bearing wall cantilevered floor truss two 2x rim joists 24 max.
The above spans are based on american softwood lumber standard sizes.
Span calculator for wood joists and rafters also available for the android os.
Rafter span tables use these two tables for roof rafters with a slope of 3 in 12 or less.
Joists rafters simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.
Also available for the android os.
Use these two tables for roof rafters with a slope greater than 3 in 12.
Deflection for 30 psf live load.
Floor truss span tables.
Included are a series of representative roof truss span tables that will give you an idea of the truss spans available for a particular load condition load duration lumber type and truss configuration.
Basic lumber design values are f 2000 psi f 1100 psi f 2000 psi e 1 800 000 psi duration of load 1 00.
Center line chase 24 max.
Maximum deflection is limited by l 360 or l 480 under live load.
View joist rafter tables.
Bottom chord dead load 5 psf.
Joist and rafter span tables.
Spacing of trusses are center to center in inches.
Span tables use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.
Span tables for jois ts and rafters american wood council 4 span tables for joists and rafters american wood council design criteria.
05425 cold formed steel trusses roof truss spans every trussteel roof truss is a custom design based upon the unique load span bearing use and code criteria of a particular project.
