Roof Framing Typical Wood Details

Roof pitch the roof pitch is the numerical measure of how steep or shallow a roof is.

Roof framing typical wood details.

Gable a gable roof has a ridge at the center and slopes in two directions. 13 30 box gable 13. Chapter 7 ceiling and roof framing 40 ceiling joists 40 flush ceiling framing 42 post and beam framing 42 roof slopes 44 flat roofs 45 pitched roofs 45 valleys 48 dormers 48 overhangs 48 ridge beam roof details 49 lightweight wood roof trusses 49 chapter 8 wall sheathing 53 types of sheathing 53 corner bracing 54. An example of each is shown in figure 2 1.

The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. Common types of roofs and basic framing terms. Such roofs are built with mostly timber take a number of different shapes and are covered with a variety of materials. Standard details for metal roofing siding post frame and.

4 12 through 9 12 are the most common pitches. The run or half the building span is the base of the triangle. Typical prescriptive roof framing introduction to prescriptive roof framing 3 prescriptive roof construction the international residential code irc and the international building code ibc set out specific guidelines within which conventional light frame wood structures may be built without the need for engineering analysis of each component. 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.

3 inch rise per 12 run is a 3 12 pitch roof. Likewise dissimilar metals also require a. Vertical rise over horizontal run. Time of manufacture producing mill number and the grad.

It is the form most commonly used by. Domestic roof construction is the framing and roof covering which is found on most detached houses in cold and temperate climates. In the u s it is defined by the rise in inches to a 12 run. Cad details are available in dwg dwf dxf and pdf format.

When you locate the detail you want just click one of the four file format buttons to download it to your computer. Roof framing ceiling joists parallel to. Treated wood since the soluble copper in the preservative is corrosive to aluminum. The details were adapted from figures in the apa publication the advanced framing construction guide form m400 which highlights construction.

4 details for conventional wood frame construction. And the line length measurement from the roof peak to the building wall is the hypotenuse. To view a cad detail you will need a cad design program or a cad viewer program.