View joist rafter tables.
Maximum span 2x6 roof rafter.
This table is simply a sample and may not be valid for your region.
Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.
Live load is weight of furniture wind snow and more.
An spf roof at the same spacing and lumber size will span 11.
2 are indicated below.
Can span up to 13 4.
Douglas fir maximum horizontal roof rafter span for lumber grade selected structural and no.
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.
These numbers are for roofs supporting light loads of 20 pounds for square foot.
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.
For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements.
Maximum rafter span of 16 feet.
Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall.
Ceiling joist span use this table to determine the maximum lengths of ceiling joists based on species of lumber joist spacing and joist size.
Also available for the android os.
An syp 2 6 rafter at 24 o c.
Dead load weight of structure and fixed loads 15 lbs ft 2.
1 ft 0 3048 m.
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.
1 psf lb f ft 2 47 88 n m 2.
Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.