Gambrel Roof Truss Dimensions

Besides its unique appearance a gambrel roof also serves to maximize the usable floor space in the attic area.

Gambrel roof truss dimensions. A gambrel room in attic truss also provides extra living space while giving your roof a barn like appearance. Or 24 o c you want to use. The double bend in the trusses makes for a more spacious area that affords more usable square footage than the average roof truss. Take the same truss count number times 4 for the number of 2 4 truss pieces you ll need to cut.

A gambrel or barn style roof is simply a gable roof with a change in slope partway up the roof. Take the number under the column of the center spacing 16 o c. That truss count number less 1 times 6 count 1 6 total is the number of osb web pieces you ll need to cut. This series of diagrams shows just how the second floor lays out in each of our six different truss widths.

Gambrel roof framing geometry calculator inch this gambrel roof fits in a semicircle and starts as the top half of an equal sided octagon. Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. So you have a really steep bottom pitch and a really flat top pitch. Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth.

Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. Hip sets are used to construct hip roofs which are roofs that slope from all sides. Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. This system consists of a girder truss corner girder corner jacks and end jacks.

Gambrel roof trusses are a popular style used often in barn or garage construction. Most of your pre made trusses that are designed as a gambrel consist of roughly a 20 12 bottom pitch and a 4 12 top pitch. See table 3 for the truss count. With no interior walls or support posts our engineered gambrel truss design optimizes useable upstairs interior space.

Well let s face it it s a very attractive roof design but there are practical considerations as well. To calculate a gambrel roof select gambrel roof from the roof type dropdown list or click on the appropriate toolbar button to calculate a. Use of manufactured roof trusses can dramatically cut labor costs when framing a gable roof compared to building rafters. Because of the number of bends in these trusses each one is custom made to specifically fit the roof that it will be installed within.