Roof Truss Span Chart

The shapes and spans shown here represent only a fraction of the millions of designs produced by alpine engineers.

Roof truss span chart.

Tcll 40 psf tcll 80 psf tcll 125 psf truss spacing truss spacing truss spacing. The load span tables shown below demonstrate only a tiny subset of the possible combinations available with trussteel cfs roof trusses. The truss calculator will determine your roof trusses based on key inputs related to the pitch span and overhang of your roof. 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.

4 oc 25 5 0 5 psf truss member sizing no ceiling dimensional lumber required. 1 spans shown in charts. 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. Span tables below illustrate common combinations of the multiple variables available.

This is based upon the span of the rafter horizontal span not total rafter length live and dead loads. Typical roof truss design spans general notes. This rafter span calculator is species specific for douglas fir hemlock etc. 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.

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. You can use sbca s span charts to roughly determine truss sizes available. More roof calculators roof truss calculator how to cut rafters.

Floor truss span chart each individual floor truss design is unique based on multiple variables. Geometry loading spacing bearing conditions etc. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. 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 calculator for wood joists and rafters also available for the android os. Also available for the android os.