Figuring The Height Of A Gambrel Roof

Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape.

Figuring the height of a gambrel roof.

Building width enter the width of the building. If your goal is to only calculate the roof height do not enter any numbers in wall height field and only use building width and roof pitch fields. Gambrel roof framing geometry calculator inch this gambrel roof fits in a semicircle and starts as the top half of an equal sided octagon. Calculate hip roof online.

The lower slope is locked for regular gambrels. Carpenters measure roof pitch as inches of rise per 12 inches of run. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. The lower slope length is measured from outside wall to the start of the upper sloped roof section.

Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. Bath with a gambrel roof. Lower height the lower height is the distance from the floor to the peak of the lower rafter. Building a bathhouse with a hip roof.

A 1 in 12 roof pitch roof rises 1 inch for every 12 inches of run. Height a good rule to follow with a gambrel roof design is that it should be twice as wide as it is high. Gambrel roof framing geometry calculator metric this gambrel roof confines to a semicircle and starts as the top half of an equal sided octagon. Rafters are nailed to the ridge board and run down to overhang the exterior wall.

The calculator made my life easier. Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. If this isn t practical then perform the same measurement on the underside of the roof. Everything was simple just calculate get all the drawings then frame a roof.

In other words if you start with a say 14 12 bottom pitch your top pitch should be 7 12 or greater. We included a roof pitch chart below the 7 12 example image and the calculator below that. This will give not only asymmetrical appearance but also balance out the load of the building over a much more stable area. All results of calculations is accurate.

As a reminder please don t forget to add height of rafter thickness of roofing material and ridge vent to the number that you ll get using our calculator. Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. The rule of thumb that i use when designing a gambrel is that the top pitch should be no less than half the pitch of the bottom. Gambrel roof square footage calculator calculate the square footage of a gambrel style roof using imperial measurements.

Enter the slope of the lower gambrel rafter or select from the dropdown list.