Maximum Span 2x6 Roof Rafter

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.

Maximum span 2x6 roof rafter.

1 psf lb f ft 2 47 88 n m 2. Ceiling joist span use this table to determine the maximum lengths of ceiling joists based on species of lumber joist spacing and joist size. Span calculator for wood joists and rafters also available for the android os. This table is simply a sample and may not be valid for your region.

For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. View joist rafter tables. Dead load weight of structure and fixed loads 15 lbs ft 2. Douglas fir maximum horizontal roof rafter span for lumber grade selected structural and no.

That means it can span a total length of over 26 for a gable roof. 2 are indicated below. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.

An syp 2 6 rafter at 24 o c. Maximum rafter span of 16 feet. For example in the rafter span table below the highlighted cell in the 40 live load table indicates that 2 x 8 southern yellow pine joists that have a grade of 2 that are spaced 24 apart can have a maximum span of 10 feet 3 inches 10 3 if designing for a live load of 40 lbs ft 2. While every effort has been made to insure the accuracy of the information presented and special effort has been made to assure that the information reflects the state of the art neither the west coast lumber inspection bureau the american wood council nor its members assume any responsibility for any particular design prepared from this online span calculator.

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. Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall. These numbers are for roofs supporting light loads of 20 pounds for square foot.

An spf roof at the same spacing and lumber size will span 11.