Roof Framing Plan Flat Roof

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.

Roof framing plan flat roof. Ridge beam sits below the rafters. When framing a flat roof you will need to create a slight incline. The point at which all the raftersare attached to. When used it must be shown on the roof plan flat roof.

Parts of a roof. 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. A flat roof has a slope of 1 8 per foot to 2 12. This will help you create a flat roof framing plan.

The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit 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. Figure 20 9 shows how a flat roof could be repre sented on the roof plan. Figure 20 8 shows the materials commonly used to frame a flat roof.

Underneath the basics flat roofs are usually constructed with a ceiling nailed to joists which support a deck usually wood in residential construction a vapor barrier insulation and a roof board. Supported by lally columns. A ridge board is a horizontal member of the roof frame. If you build a flat roof try to have it slope in multiple directions to drains or gutters.

Often the flat roof has a slight pitch in the rafters. 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. Transfers the loadof the roof through the raftersto walls below. The flat roof is a very common style in areas with little rain or snow.

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. From there the flat roof system you choose will determine the materials you apply. In order to do roof framing properly it is important to understand the unique shape and dimensions of your roof since these will greatly impact the geometry of the roof frame. Ridge board v s beam.

Think of a flattened hip roof. One of the most important parts of building a sturdy roof is the initial roof framing plan. Flat roofs are always built at a slight incline at least 1 8 inch per foot. The rise or height of the roof at its peak is the altitude of the triangle.

It is not ideal for snow or heavy rain but modern materials and proper drainage have helped. Ridge board ridge beam. Some roofs actually slope in several directions ensuring optimal water runoff.