Let s consider a basic gable wood roof framing design.
Roof framing 2x6 spans.
Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.
Here we have a wood framed gable roof.
Applies to panels 24 or wider table r503 2 1 1 1 joist size spacing allowable span 12 6 8 15 12 3 5 6 24 4 7 9 5 5812 girder and header spans for interior bearing walls.
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.
Can span up to 13 4.
Span length for 2 6 rafters 2 6 shed roof rafters are enough for nearly any type of shed a homeowner wants to build.
Maximum rafter spans for a patio roof.
View joist rafter tables.
For heavy roofs or in.
Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.
Panel continuous over two or more spans w long dimension perpendicular to supports.
1 psf lb f ft 2 47 88 n m 2.
Span calculator for wood joists and rafters also available for the android os.
An essential part of planning a patio roof or gazebo project is determining the number size and spacing of rafters beams and posts according to the loads they will carry.
Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall.
Roof span ft remarks rafter slope 2x6 2x8 2x10 table r502 3 1 2 dead load 10 psf.
1 ft 0 3048 m.
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.
Continuing on from part 3.
Floor beam span tables of residential structural design we will now look at roof rafter and beam design.
In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.
Also available for the android os.
An syp 2 6 rafter at 24 o c.
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.
Live load is weight of furniture wind snow and more.