Gambrel Roof Connector Systems

The usual architectural term in eighteenth century england and north america was dutch roof the upper slope is positioned at a shallow angle while the lower slope is steep.

Gambrel roof connector systems.

The gussets top in the gambrel system above designed by the author create a three hinged arch out of each frame which simplifies the load analysis significantly. This gambrel roof fits in a semicircle and starts as the top half of an equal sided octagon. Hardware is required at only three points as opposed to nine different joints in the roof assembly of a traditionally framed gambrel making the system considerably easier to build. A gambrel or barn style roof is simply a gable roof with a change in slope partway up the roof.

This design provides the advantages of a sloped roof while maximizing. Our newest connectors have been developed to make stick frame connections in roofs as intuitive as possible to ensure the construction of safer stronger homes. Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. The gm20 gambrel has a 5 12 pitch and 23 degree slope on the upper section and 7 12 30 degree on the lower section.

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 gable roof has only two rafter or truss chord angles a top cut at the peak and a bottom cut at the walls. A gambrel style is often called a barn roof. If you plan on building and installing your own gambrel roof you ll have to draw out plans first to determine the proper dimensions.

Its double or sometimes triple slopes on each side of a peak provide more space inside the roof which is attractive to homeowners too. The difference between the two is that the gambrel only has two sides while the mansard has four. Besides its unique appearance a gambrel roof also serves to maximize the usable floor space in the attic area. Similar to mansard the lower side of the gambrel roof has an almost vertical steep slope while the upper slope is much lower.

Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. A gambrel or gambrel roof is a usually symmetrical two sided roof with two slopes on each side. Can i use multiple kits in a row to create a longer space. The varied roof lines that are possible with stick frame homes can also enhance curb appeal and market value for some homebuyers.

Late 19th century builder guides show this gambrel framing concept which the author has emulated using modern materials. The gm40 gambrel has an approximate 4 12 pitch and 17 degree upper section and a 7 12 30 degree lower section the gb5630 has a 7 12 pitch and 30 degree slope. Taken together the structural impacts the load of the upper roof the upward reaction of the knee walls and the restraint at the main wall plates place the lower rafters in bending.