2x4 Floor Truss Span Chart

View joist rafter tables.

2x4 floor truss span chart.

Span calculator for wood joists and rafters also available for the android os. Strongbacks must be installed at mid span to achieve the maximum spans indicated for the vibration criterion in section 9 23 4 3 2 of the national building code of canada nbc. Geometry loading spacing bearing conditions etc. And parallel to floor truss span strongback lateral supports 24 max.

Tcll 40 psf tcll 80 psf tcll 125 psf truss spacing truss spacing truss spacing. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. Spacing of trusses are center to center in inches. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.

Maximum deflection is limited by l 360 or l 480 under live load. 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. Therefore for gable roofed sheds the rafter span table is indicating how far a rafter can span half of your shed s width. 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.

Floor truss span chart each individual floor truss design is unique based on multiple variables. Floor trusses can span farther between bearing points than i joists allowing for larger open rooms. Span tables below illustrate common combinations of the multiple variables available. Floor truss span tables alpine engineered products 17 these allowable spans are based on nds 91.

Also available for the android os. This also reduces the need and cost for extra bearing posts beams and footings. Means that your shed should be no wider or longer depending on how you orientate your single sloped roof than 11. Basic lumber design values are f 2000 psi f 1100 psi f 2000 psi e 1 800 000 psi duration of load 1 00.

The 2 4 s and 2 6 s are considered to be in spf 3 stud and the 2 8 s and 2 10 s in spf 1 2. While every effort has been made to insure the accuracy of the information presented and special effort has been made to assure that the information reflects the state of the art neither the west coast lumber inspection bureau the american wood council nor its members assume any responsibility for any particular design prepared from this online span calculator.