Roof Framing Geometry

For complex roof framing trigonometry or geometry must be used.

Roof framing geometry.

However it has over 1 000 geometric roof framing drawings in the book as well for carpenters that are not comfortable using trigonometry. Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. There is more trigonometry in this book than all of the roof framing books written in english combined. Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth.

The run or half the building span is the base of the triangle. Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. Roof framing geometry trigonometry for polygons polygons in mathematical context polygons in carpenters mathematical context central angle pi 2 n working angle pi 2 n 2 plan angle pi central angle 2 exterior angle plan angle 2 s is the length of any side of the polygon n is the number of sides. However it has over 1 000 geometric roof framing drawings in the book as well for carpenters that are not comfortable using trigonometry.

The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. Gambrel roof framing geometry calculator inch this gambrel roof fits in a semicircle and starts as the top half of an equal sided octagon. Gambrel roof framing geometry calculator metric this gambrel roof confines to a semicircle and starts as the top half of an equal sided octagon. There is more trigonometry in this book than all of the roof framing books written in english combined.

Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth.