Gambrel Roof Rafter Layout

Place a 6 in 12 in 15 cm 30 cm rectangular piece of osb or 3 4 in 1 9 cm thick plywood under the joint of an assembled rafter.

Gambrel roof rafter layout.

Either use our standard design or we can custom build to your design. Click here to buy the plans to build this tall barn style shed with loft for only 9 97. Trace and cut osb or plywood joints to connect the rafter pieces. Purlins joints are used slopes are fixed and the length of the top and bottom rafters including overhang will always be equal.

The numbers vary depending on your local design wind speed zone but the bottom line is that you can use the same hardware here that you would use if the roof were an ordinary 12 pitch roof with straight rafters. This gambrel roof fits in a semicircle and starts as the top half of an equal sided octagon. Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. This approach conforms to my general design philosophy when in comes to the structural design of houses.

Volume of building equal to gothic type building. Then use a saw to cut the lines that you drew. A regular gambrel fits inside a circumscribed semi circle and is essentially one half of a regular octagon. How to build perfect barn style gambrel roof trusses.

Click here to see more shed building videos. Build the trusses now because the empty floor will be part of your temporary truss jig. The starwood gambrel rafter can be used to give your building the classic barn look or can be used for an economical storage solution.