Roof Truss Span Chart

Geometry loading spacing bearing conditions etc.

Roof truss span chart.

Typical roof truss design spans general notes. Every trussteel roof truss is a custom design based upon the unique load span bearing use and code criteria of a particular project. The shapes and spans shown here represent only a fraction of the millions of designs produced by alpine engineers. Alpine truss designs are engineered to meet specific span configuration and load conditions.

To size joists and rafters use the maximum span tables for southern yellow pine. Span tables below illustrate common combinations of the multiple variables available. 4 oc 25 5 0 5 psf truss member sizing no ceiling dimensional lumber required. Keep in mind that these tables are for estimations only.

Span calculator for wood joists and rafters also available for the android os. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. View joist rafter tables. The load span tables shown below demonstrate only a tiny subset of the possible combinations available with trussteel cfs roof trusses.

You can use sbca s span charts to roughly determine truss sizes available. This rafter span calculator is species specific for douglas fir hemlock etc. This is based upon the span of the rafter horizontal span not total rafter length live and dead loads. Tcll 40 psf tcll 80 psf tcll 125 psf truss spacing truss spacing truss spacing.

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. Rafter span tables use these tables to determine lengths sizes and spacing of rafters based on a variety of factors such as species load grade spacing and pitch. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. 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.

The truss calculator will determine your roof trusses based on key inputs related to the pitch span and overhang of your roof. Also available for the android os. 1 spans shown in charts.