Shed Roof Rafter Span Table

Rafter span tables use these tables to determine lengths sizes and spacing of rafters.

Shed roof rafter span table.

If you have a single sloped roof then the 11 span distance for 2 4 rafters o c. Also available for the android os. Maximum rafter spans for a patio roof in areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. More roof calculators roof truss calculator how to cut rafters.

Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall. Straight line interpolation shall be permitted for intermediate spans and design values. Use this table to determine the maximum lengths of ceiling joists based on species of lumber joist spacing and joist size. So this table could accommodate a house with a total rafter span or house width of 32 feet.

So roughly 7 8 long for a 2 4. To size joists and rafters use the maximum span tables for southern yellow pine. These span tables assume installation of at least three joists or rafters that are spaced not more than 24 on center. This rafter span calculator is species specific for douglas fir hemlock etc.

Therefore for gable roofed sheds the rafter span table is indicating how far a rafter can span half of your shed s width. You are going to cut out triangles that will cover the apex of each set of rafters. For an 8 10 shed one sheet of plywood should be fine. This is based upon the span of the rafter horizontal span not total rafter length live and dead loads.

The rule of thumb is that the gusset should be twice the width of the wood you use for your rafters. The calculated spans assume fully supported members properly sheathed and nailed on the top edge of the joist or rafter. Span calculator for wood joists and rafters also available for the android os.