Roof Rafter Spacing 2x6
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Can span up to 13 4.
Roof rafter spacing 2x6. Span calculator for wood joists and rafters also available for the. An syp 2 6 rafter at 24 o c. 1 ft 0 3048 m. These numbers are for roofs supporting light loads of 20 pounds for square foot.
Rafter spacing rafters must be strong enough to hold the roof sheathing and the shingles. 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. Structures such as sheds or barns can be frames with rafters every 24 again make sure to consult local codes. That means it can span a total length of over 26 for a gable roof.
An spf roof at the same spacing and lumber size will span 11. Patio roof maximum beam rafter spans. Spacing in exterior exposure. Live load psf dead load psf span calculator for wood joists and rafters available for the iphone.
Typical rafter spacing codes will specify a minimum spacing of 16 inches 19 2 inches or 24 inches. 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. It is always better to have a large rafter rather than be concerned with a sagging roof. Douglas fir maximum horizontal roof rafter span for lumber grade selected structural and no.
Dead load weight of structure and fixed loads 15 lbs ft 2. 1 psf lb f ft 2 47 88 n m 2. 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. Builders aren t bound by standard rafter spacing measurements.
If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center. 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. For more information see our disclosures here. Live load is weight of furniture wind snow and more.
If your local building authority has a rafter spacing code you may not space rafters wider than required by code.
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