Gable Roof Rafter Spacing

For standard shed roof rafter spacing see rafter span chart.

Gable roof rafter spacing.

Total rafter length with overhang. For instance 2 grade 2x4s at 16 on center will span just over 9. An spf roof at the same spacing and lumber size will span 11. Rafter plumb cut depth.

These numbers are for roofs supporting light loads of 20 pounds for square foot. Maximum rafter spans for a patio roof in areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. After they re up you can snap a line to mark and trim the tails in a nice straight line to make up for any ridge warp or marking cutting and fixing errors. An syp 2 6 rafter at 24 o c.

That means it can span a total length of over 26 for a gable roof. That rafter outside forms the overhang for the barge boards to fix to and so the soffit boards and ventilation are continuous all the way. So the space between rafters can be greater without reducing the maximum span. The same concept holds true for roof trusses.

Total rafter lumber length. Framing a gable roof building a gable with barge end purlin struts and collar ties. Gable roof framing calculator plan diagram with full dimensions for a good straight fascia add an extra inch or 2 to the tails of all your rafters total length. 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.

If you get premium kiln dried lumber then you could span 10 5 with the same size of lumber and rafter spacing. Total roof width with rake overhangs. As a general rule roofs that have a high human occupancy rate should be framed with rafters every 16 structures such as sheds or barns can be frames with rafters every 24 again make sure to consult local codes. If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center.

There is no standard spacing it depends on what size of rafters you want to use and the span of your shed. Common spacing for trusses on this type of building is often between 2 and 4 feet but trusses built with advanced designs may allow spacing as great as 8 or 12 feet. Can span up to 13 4.