Parallel Chord Roof Truss Span Chart

1 b t c.

Parallel chord roof truss span chart.

Spans shown are in feet 4. Center line chase 24 max. Live load l 480 total load l 360 5. Top and bottom chords braced by structural sheathing 6.

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. Tcdl 10 psf and bcdl 5 psf 3. Spacing of trusses are center to center in inches. Trusses must be designed for any special loading such as concentrated loads.

Bottom chord dead load 5 psf. Tcll top chord floor live load 2. You can use sbca s span charts to roughly determine truss sizes available. Top chord dead load 10 psf.

The truss is a framework consisting of rafters posts and struts which supports your roof. 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. 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. Openings are to be located in the center of the span max opening width is 24 inches 7.