Parallel Chord Roof Truss Span Chart

Live load l 480 total load l 360 5.

Parallel chord roof truss span chart.

Spans shown are in feet 4. Tcdl 10 psf and bcdl 5 psf 3. Openings are to be located in the center of the span max opening width is 24 inches 7. Keep in mind that these tables are for estimations only.

Other floor and roof loading conditions a variety of species and other lumber grades are available. 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. 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. Spacing of trusses are center to center in inches.

Tcll top chord floor live load 2. Top and bottom chords braced by structural sheathing 6. 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. Top chord dead load 10 psf.

You can use sbca s span charts to roughly determine truss sizes available. The truss is a framework consisting of rafters posts and struts which supports your roof. 1 b t c. Trusses must be designed for any special loading such as concentrated loads.