Steep Roof Framing Details

And the line length measurement from the roof peak to the building wall is the hypotenuse.
Steep roof framing details. In the u s it is defined by the rise in inches to a 12 run. The style is affected too because the framing of the roof changes the slope. Steep slope roofing products are generally more visually appealing because they are critical aesthetic components for residential construction where the roof can consist of 40 of the exterior visual appearance of a home. Some of these can support the roof and prevent ridge sagging and wall spreading.
The run or half the building span is the base of the triangle. Cad details are available in dwg dwf dxf and pdf format. This article describes and illustrates the different types of support that prevents roof sagging and wall bulging at buildings including definitions of collar ties rafter ties and structural ridge beams. Your shed roof framing is not as complicated as you might think.
When you see this detail below it is referring to the pitch of the roof. Collar ties rafter ties tension beams structural ridge beams. 4 12 through 9 12 are the most common pitches. Vertical rise over horizontal run.
Roof pitch the roof pitch is the numerical measure of how steep or shallow a roof is. 3 inch rise per 12 run is a 3 12 pitch roof. Then you will have more storage. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.
To view a cad detail you will need a cad design program or a cad viewer program. The rise or height of the roof at its peak is the altitude of the triangle. When you locate the detail you want just click one of the four file format buttons to download it to your computer. For the shed roof pictured above the back has a 5 12 pitch.