Gambrel Roof Details

Gambrel roofs are symmetrical with two slopes on each side of the roof.

Gambrel roof details.

Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. A gambrel or barn style roof is simply a gable roof with a change in slope partway up the roof. The project architect briefly discusses the basics of gambrel roof design. To calculate a gambrel roof select gambrel roof from the roof type dropdown list or click on the appropriate toolbar button to calculate a gambrel roof.

Gambrel roofs can be a challenge. Also most gambrel roofs require a kneewall to support the knuckle or the joint between the upper and lower roof slopes. Gambrel roof framing geometry calculator inch this gambrel roof fits in a semicircle and starts as the top half of an equal sided octagon. Gambrel roof trusses the gambrel roof trusses are symmetrical and their shape in elevation could be described as one half of an asymmetrical octagon.

On each side the truss has two slopes the one on top is at a shallow angle the other one is longer and steeper. Dealing with two roof pitches instead of one seems to complicate matters disproportionately. If you plan on building and installing your own gambrel roof you ll have to draw out plans first to determine the proper dimensions. The guidelines i am about to explain for you outline the steps i use when i am designing my gambrel shed plans barn shed plans and small barn plans.

With overhang selected drag slider to increment decrement birdsmouth seat width to suit. Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape.