How To Design A Gambrel Roof

A gambrel roof is a popular roof style on many contemporary barns and sheds.

How to design a gambrel roof.

To calculate a gambrel roof select gambrel roof from the roof type dropdown list or click on the appropriate toolbar button to calculate a. A gambrel or barn style roof is simply a gable roof with a change in slope partway up the roof. Besides its unique appearance a gambrel roof also serves to maximize the usable floor space in the attic area. 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.

Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. A couple years ago when i was building my 15 by 20 foot log cabin in far northern washington i decided to top the building with a gambrel rather than a more conventional gable or a frame roof. Gambrel roofs are symmetrical with two slopes on each side of the roof. A gambrel style shed roof offers the most storage space in the attic when compared to a gable or saltbox style shed roof.

The gambrel roof design calculator can go up against different style that when nitty gritty right can ooze a cutting edge feel. Gambrel roof framing geometry calculator inch this gambrel roof fits in a semicircle and starts as the top half of an equal sided octagon. Architect and builder andrew digiammo owns and operates a custom design build firm based in assonet mass. Use the select objects tool to select the left 30 wall to select it and click on the open object edit.

To create a gambrel roof to create a basic gambrel roof we need to tell the program to not build a hip roof plane over the two 30 walls in our plan as well as to set the appropriate lower and upper pitches for the two horizontal 40 walls. Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. A roof design gives the chance to extra floor space in the roof volume similar to a space or upper room space. Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape.

The roof is performing fine in service and i get all the benefits of the gambrel plenty of usable space with the aesthetic appeal of a roof that springs from the first floor. Gambrel roof framing geometry calculator metric this gambrel roof confines to a semicircle and starts as the top half of an equal sided octagon.