An spf roof at the same spacing and lumber size will span 11.
Roof rafter spacing 2x6.
Typical rafter spacing codes will specify a minimum spacing of 16 inches 19 2 inches or 24 inches.
1 ft 0 3048 m.
Spacing in exterior exposure.
It is always better to have a large rafter rather than be concerned with a sagging roof.
2 are indicated below.
If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center.
Patio roof maximum beam rafter spans.
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.
Structures such as sheds or barns can be frames with rafters every 24 again make sure to consult local codes.
But they do tend to space rafters in one of several industry standard increments typically.
Live load is weight of furniture wind snow and more.
Rafter spacing rafters must be strong enough to hold the roof sheathing and the shingles.
These numbers are for roofs supporting light loads of 20 pounds for square foot.
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1 psf lb f ft 2 47 88 n m 2.
That means it can span a total length of over 26 for a gable roof.
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.
Can span up to 13 4.
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.
An syp 2 6 rafter at 24 o c.
Span calculator for wood joists and rafters also available for the.
Builders aren t bound by standard rafter spacing measurements.
If your local building authority has a rafter spacing code you may not space rafters wider than required by code.
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Dead load weight of structure and fixed loads 15 lbs ft 2.