Typical rafter spacing codes will specify a minimum spacing of 16 inches 19 2 inches or 24 inches.
Roof rafter spacing 2x6.
1 ft 0 3048 m.
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.
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Live load is weight of furniture wind snow and more.
Patio roof maximum beam rafter spans.
Douglas fir maximum horizontal roof rafter span for lumber grade selected structural and no.
An spf roof at the same spacing and lumber size will span 11.
That means it can span a total length of over 26 for a gable roof.
Dead load weight of structure and fixed loads 15 lbs ft 2.
2 are indicated below.
Spacing in exterior exposure.
But they do tend to space rafters in one of several industry standard increments typically.
Span calculator for wood joists and rafters also available for the.
1 psf lb f ft 2 47 88 n m 2.
If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center.
It is always better to have a large rafter rather than be concerned with a sagging roof.
Rafter spacing rafters must be strong enough to hold the roof sheathing and the shingles.
Live load psf dead load psf span calculator for wood joists and rafters available for the iphone.
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.
Rafter and roof joist spacing is only one part of a complex roof design that works together to form a structure that meets building codes and can hold up the weight of the roof and roof load.
An syp 2 6 rafter at 24 o c.
These numbers are for roofs supporting light loads of 20 pounds for square foot.
Can span up to 13 4.
Structures such as sheds or barns can be frames with rafters every 24 again make sure to consult local codes.