Flat Roof Framing Plan Details

Flat roofs are hard to replace.

Flat roof framing plan details.

As you may imagine there is a fair amount of weight involved here in terms of boards felt etc. Roof plans a roof plan is used to show the shape of the roof. A flat roof has a slope of 1 8 per foot to 2 12. Roof framing and drainage plans will be discussed in chapter 30.

This will help you create a flat roof framing plan. The run or half the building span is the base of the triangle. And the line length measurement from the roof peak to the building wall is the hypotenuse. The plan that is drawn of the roof area may be either a roof plan or a roof framing plan for some types of roofs a roof drainage plan may also be drawn.

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 not ideal for snow or heavy rain but modern materials and proper drainage have helped. This could mean flat roofs may not raise the same red flags they used to. Flat roof construction for residential.

Flat roofs are always built at a slight incline at least 1 8 inch per foot. Some roofs actually slope in several directions ensuring optimal water runoff. The rise or height of the roof at its peak is the altitude of the triangle. But now flat roofs often are constructed with fewer layers because of improved waterproofing technology.

Although flat roofs are cheaper to build than pitched roofs they have a shorter life span. Sizes of joists needed for flat roof construction. Old asbestos roofs are often replaced with flat roofs. Some observers suggest it s harder to replace a flat roof than a traditional pitched shingle roof because of the labor required to remove its layers especially on older flat roofs.

A roof is considered to be flat when it is of a slope of 1 5 o to the horizontal. Materials such as the roofing material vents and their location. You can do this with a foam layer that exactly fits your roof. Think of a flattened hip roof.