Gambrel Roof Structural Analysis

A gambrel roof is a two sided symmetrical roof that has two slopes on each side.

Gambrel roof structural analysis. Think of a typical barn roof the most common gambrel roof most people see. A traditionally framed gambrel top left requires a complicated structural analysis and extensive labor intensive reinforcing with metal hardware at each connection in order to direct uplift forces through the complex multiple load paths that exist in the frame all of which add considerable time and expense. Area under roof si b material inframing el c. A gambrel style is often called a barn roof.

Theoretical calculation 24 b. In this video i will find the compression tension and magnitude of each member and the f. 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 contractor will take it to an engineer anyway.

The lower slope is steeper and the upper slope is positioned at a shallow angle. Gambrel roofs are symmetrical with two slopes on each side of the roof. We had an open gambrel roof in a shed we built with a loft at our old house and it was the gussets that were more important because they hold the angle of the gambrel. Dead loadson bamroof 28 b analysis ofthe.

Besides its unique appearance a gambrel roof also serves to maximize the usable floor space in the attic area. A gambrel or barn style roof is simply a gable roof with a change in slope partway up the roof. Wind pressuredistribution diagram 25 4. We had to size the plate and put in the right number of fasteners as well as size the rafters.

Wind pressuredistribution 23 a. If you plan on building and installing your own gambrel roof you ll have to draw out plans first to determine the proper dimensions. Dutch roof was the popular term for a gambrel roof in the eighteenth century in england and north america. Advantages ofthe three rafter gambrel e3 3.

Wind loadsonbarn roof 26 5. A gambrel roof is a popular roof style on many contemporary barns and sheds. Its double or sometimes triple slopes on each side of a peak provide more space inside the roof which is attractive to homeowners too.