Fire safe construction 3 floor performance and tj pro rating 4 5 section 1.
2 x 6 roof joist span.
2 6 shed roof rafters are enough for nearly any type of shed a homeowner wants to build.
1 psf lb f ft 2 47 88 n m 2.
2 x 12 s are not listed because you can span pretty much whatever you want.
9 16 tji joists design properties 6 floor span and load tables 7 8 tips for preventing floor noise 8 allowable holes 9 cantilevers 10 11 roof span and load tables 12 13 framing.
Live load is weight of furniture wind snow and more.
1 ft 0 3048 m.
Another option are 2 x 8 rafters spaced 24 inches o c.
This ceiling joist span table is based on the 2012 irc for uninhabitable attics with limited storage.
It covers 2 common lumber species and sizes at 20 pounds per square foot load.
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.
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.
An syp 2 6 rafter at 24 o c.
Although 2 x 4 s are included in the official table they are not listed because it is never advised to use them.
Can span up to 13 4.
For example the highlighted cell below shows that a 2 x 6 southern yellow pine joist with a grade of 2 and spaced 24 apart can have a maximum span of 10 feet 0 inches 10 0 if you are designing your structure to support a plaster ceiling.
For heavy roofs or in.
Maximum rafter spans for a patio roof.
Dead load weight of structure and fixed loads 15 lbs ft 2.
In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.
The table states that 2 x 6 rafters spaced 16 inches on center o c can span a maximum distance of 13 feet 5 inches.
Trus joist tji joist specifier s guide tj 4000 july 2019.
Span calculator for wood joists and rafters also available for the android os.
Span length for 2 6 rafters.
2 are indicated below.
In making your choice consider how you will insulate your insulate your roof.