Parallel Chord Roof Truss Span Chart

Bottom chord dead load 5 psf.

Parallel chord roof truss span chart.

Live load l 480 total load l 360 5. The truss is a framework consisting of rafters posts and struts which supports your roof. Openings are to be located in the center of the span max opening width is 24 inches 7. Other floor and roof loading conditions a variety of species and other lumber grades are available.

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. Center line chase 24 max. Top and bottom chords braced by structural sheathing 6.

Top chord dead load 10 psf. Spacing of trusses are center to center in inches. 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. You can use sbca s span charts to roughly determine truss sizes available.

Tcdl 10 psf and bcdl 5 psf 3. 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. Trusses must be designed for any special loading such as concentrated loads. Tcll top chord floor live load 2.