Parallel Chord Roof Truss Span Chart

The truss is a framework consisting of rafters posts and struts which supports your roof.

Parallel chord roof truss span chart.

Strongback splicing at change of span type 2 bracing unit 70 x 35 block fixed to msj with 2 75mm 3 05ø nails to top chord and bottom chord multigrip strongback strongback fix bracing panel to vertical webs with 2 30mm x 2 8ø nails fix trimmer to wall top plate with 3 75mm x 3 05ø nails 7 0 mm structural plywood or equivalent masonite fixed. Live load l 480 total load l 360 5. Tcll top chord floor live load 2. Spacing of trusses are center to center in inches.

You can use sbca s span charts to roughly determine truss sizes available. Openings are to be located in the center of the span max opening width is 24 inches 7. The important point to keep in mind when you use your truss calculator is that every truss calculation is completely unique and is based on the size of your roof and its specific dimensions. Center line chase 24 max.

Keep in mind that these tables are for estimations only. Tcdl 10 psf and bcdl 5 psf 3. Other floor and roof loading conditions a variety of species and other lumber grades are available. Top and bottom chords braced by structural sheathing 6.

Trusses must be designed for any special loading such as concentrated loads. 1 b t c. Spans shown are in feet 4. 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.