Maximum Span 2x6 Roof Rafter

View joist rafter tables.

Maximum span 2x6 roof rafter.

Maximum rafter span of 16 feet. An spf roof at the same spacing and lumber size will span 11. 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. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.

Live load is weight of furniture wind snow and more. Ceiling joist span use this table to determine the maximum lengths of ceiling joists based on species of lumber joist spacing and joist size. Can span up to 13 4. 1 psf lb f ft 2 47 88 n m 2.

1 ft 0 3048 m. Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall. Douglas fir maximum horizontal roof rafter span for lumber grade selected structural and no. 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.

Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. Dead load weight of structure and fixed loads 15 lbs ft 2. 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. Also available for the android os.

These numbers are for roofs supporting light loads of 20 pounds for square foot. For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. Span calculator for wood joists and rafters also available for the android os. An syp 2 6 rafter at 24 o c.

This table is simply a sample and may not be valid for your region.