Roof Truss Span Chart

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

Roof truss span chart.

Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. Visit the roof framing page for more information on cutting roof rafters and visit the roof pitch calculator for determining rafter lengths based on rise and run. The load span tables shown below demonstrate only a tiny subset of the possible combinations available with trussteel cfs roof trusses. Floor truss span chart each individual floor truss design is unique based on multiple variables.

You can use sbca s span charts to roughly determine truss sizes available. The truss calculator will determine your roof trusses based on key inputs related to the pitch span and overhang of your roof. Span tables below illustrate common combinations of the multiple variables available. Every trussteel roof truss is a custom design based upon the unique load span bearing use and code criteria of a particular project.

This rafter span calculator is species specific for douglas fir hemlock etc. Typical roof truss design spans general notes. 4 oc 25 5 0 5 psf truss member sizing no ceiling dimensional lumber required. Span calculator for wood joists and rafters also available for the android os.

More roof calculators roof truss calculator how to cut rafters. 1 spans shown in charts. Also available for the android os. Tcll 40 psf tcll 80 psf tcll 125 psf truss spacing truss spacing truss spacing.

Geometry loading spacing bearing conditions etc. This is based upon the span of the rafter horizontal span not total rafter length live and dead loads. View joist rafter tables. Total load psf duration factor live load psf roof type 55 1 15 40 snow shingle 55 1 15 30 snow tile 47 30 snow 40 20 snow 1 25 20.

Keep in mind that these tables are for estimations only. To size joists and rafters use the maximum span tables for southern yellow pine. Alpine truss designs are engineered to meet specific span configuration and load conditions.