2x6 Roof Rafter Span

This rafter span calculator is species specific for douglas fir hemlock etc.

2x6 roof rafter span.

The pitch and span of your roof will dictate how long of a rafter you ll need use maximum span calculator to help you find your rafter size. Dead load weight of structure and fixed loads 15 lbs ft 2. This is based upon the span of the rafter horizontal span not total rafter length live and dead loads. That means it can span a total length of over 26 for a gable roof.

These numbers are for roofs supporting light loads of 20 pounds for square foot. To size joists and rafters use the maximum span tables for southern yellow pine. 1 psf lb f ft 2 47 88 n m 2. Can span up to 13 4.

For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. 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. 2 are indicated below. Visit the roof framing page for more information on cutting roof rafters and visit the roof pitch calculator for determining rafter lengths based on rise and run.

An spf roof at the same spacing and lumber size will span 11. An syp 2 6 rafter at 24 o c. So this table could accommodate a house with a total rafter span or house width of 32 feet. If you look at the rafter span chart you ll notice that 2x4s can be used for rafters on spans up to 11.

Span calculator for wood joists and rafters also available for the android os. Rafter span tables use these tables to determine lengths sizes and spacing of rafters based on a variety of factors such as species load grade spacing and pitch. The spans in this table are based on a maximum supported rafter span of 16 feet where the supported span is the total horizontal distance spanned by the roof rafters divided in half not the diagonal distance or the length of the rafter. Douglas fir maximum horizontal roof rafter span for lumber grade selected structural and no.

Also available for the android os. More roof calculators roof truss calculator how to cut rafters.