Roof Framing Plan Flat Roof

The rise or height of the roof at its peak is the altitude of the triangle.

Roof framing plan flat roof.

Often the flat roof has a slight pitch in the rafters. The flat roof is a very common style in areas with little rain or snow. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. From there the flat roof system you choose will determine the materials you apply.

The framing style of the roof refers to the actual components of each roofing truss and the design of the structural foundation of that roof. A flat roof has a slope of 1 8 per foot to 2 12. The flat roof is economical to construct because ceiling joists are elimi nated and rafters are used to support both the roof and ceiling loads. When framing a flat roof you will need to create a slight incline.

Figure 20 9 shows how a flat roof could be repre sented on the roof plan. Parts of a roof. Ridge board v s beam. Transfers the loadof the roof through the raftersto walls below.

Think of a flattened hip roof. The run or half the building span is the base of the triangle. Partially these will depend on the style of roof you ve selected but you ll also have some wiggle room depending on the design elements of the house. It is not ideal for snow or heavy rain but modern materials and proper drainage have helped.

Flat roofs are always built at a slight incline at least 1 8 inch per foot. If you build a flat roof try to have it slope in multiple directions to drains or gutters. Figure 20 8 shows the materials commonly used to frame a flat roof. And the line length measurement from the roof peak to the building wall is the hypotenuse.

The point at which all the raftersare attached to. One of the most important parts of building a sturdy roof is the initial roof framing plan. A ridge board is a horizontal member of the roof frame. This will help you create a flat roof framing plan.

Ridge board ridge beam. Roof framing simply describes how a group of rafters and beams are fitted or joined together in order to provide support for the roof covering. Some roofs actually slope in several directions ensuring optimal water runoff. In addition to being used in residential construction the flat roof is typically used on commercial structures to provide a platform for heating and other mechanical equipment.

When used it must be shown on the roof plan flat roof. Supported by lally columns. Ridge beam sits below the rafters.