Parallel Chord Roof Truss Span Chart

Other floor and roof loading conditions a variety of species and other lumber grades are available.

Parallel chord roof truss span chart.

Tcll top chord floor live load 2. Tcdl 10 psf and bcdl 5 psf 3. You can use sbca s span charts to roughly determine truss sizes available. Keep in mind that these tables are for estimations only.

1 b t c. Bottom chord dead load 5 psf. 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. 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.

Top and bottom chords braced by structural sheathing 6. Spacing of trusses are center to center in inches. Openings are to be located in the center of the span max opening width is 24 inches 7. 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.

Trusses must be designed for any special loading such as concentrated loads. Top chord dead load 10 psf. Live load l 480 total load l 360 5. Spans shown are in feet 4.