Detail Hip And Valley Roof Framing

In a rafter roof all of these components are required to provide a stable roof.

Detail hip and valley roof framing.

Hip and valley roof framing is no so complex as compared to hip roof framing procedures. 4 12 through 9 12 are the most common pitches. Common types of roofs and basic framing terms. Roof pitch the roof pitch is the numerical measure of how steep or shallow a roof is.

Vertical rise over horizontal run. Now draw the centerlines for all rectangles that are formed inside. Minus ridge thickness to allow for ridge becoming pole plate roof peak will be slightly higher ridge thick must be same. Hipped roof construction can seem quite complicated to grasp at first but i m going to break it down and explain each area in detail.

The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. It is the form most commonly used by. A dutch hip roof is a combination of both the hip roof and gable roof features. An example of each is shown in figure 2 1.

Not shown are the hip and valley rafters needed to tie the roof together where the rafters are framed at an angle to each other. Types of roofs the most commonly used types of pitched roof construction are the gable the hip the intersecting and the shed or lean to. And the line length measurement from the roof peak to the building wall is the hypotenuse. The function of each component is.

I ll start at the beginning with the easy bits before tackling the more complicated stuff and that way hopefully i ll make it really clear and easy to understand exactly how to set out measure cut and install hip and valley roof rafters. It is sometimes also referred to as a dutch gable roof precisely because it contains both roof style features. The run or half the building span is the base of the triangle. Here roofs are constructed with an angle of 90 degrees.

Tie down fixings tie down fixings are used to resist uplift and shear forces lateral loads in floor framing wall framing and roof framing. Gable a gable roof has a ridge at the center and slopes in two directions. First of all you need to design the layout of building. 3 inch rise per 12 run is a 3 12 pitch roof.

Prescriptive roof consisting of the rafters a ridge board ceiling joists and collar ties. Enter the extension wall length into wall length and double the extension wall width then minus ridge thickness into the wall width entries. Porch roof extensions for hip roof porch extensions from an existing building wall you can use half the calculator results. The rise or height of the roof at its peak is the altitude of the triangle.

In the u s it is defined by the rise in inches to a 12 run. The gable portion of a dutch hip roof is usually placed at the end of the roof ridge and sits on top of the plane of the hip roof.