Traditional Rafter Roof Construction

Definition of common rafter.

Traditional rafter roof construction. A common rafter runs from the roof ridge to the top of the front or rear wall plate and extend beyond the wall to provide an overhang or eaves or soffit. The roof rafters provide integral structural support to the roof. Piece by piece rafter roof construction however is still the more common construction method for many buildings. The ridge beam runs along horizontally along the top of the roof and is supported by the other rafters.

The 4 hip rafters begin at the 4 corners of the roof and connect to the ridge beam. If you re framing a gable roof on a new house or building a shed or even a doghouse with a gable roof you ll need to cut a number of roof rafters. The most commonly used types of pitched roof construction are the gable the hip the intersecting and the shed or lean to. A cut roof this is the traditional method of cutting the timber on site and building up the roof using rafters ridge boards joists and purlins etc the exact details being determined by the size of roof size of timbers etc.

A common rafter comprises two beams that extend upwards from the top plate of either side of a shed wall. There are two basic methods of pitched roof construction. Roofs are framed in five basic designs. A truss roof using factory made trusses which are delivered to site complete and just erected.

Every piece is measured cut and fastened together to form the rafter. Rafters are the traditional means of framing a roof. Due to the width. Simple roofs such as a shed or the common gable are fairly easy to construct even without plans if you understand the basics and a little geometry.

This means that each rafter is built on the job site using dimensional lumber. I have a hip roof with a 12 12 pitch on the main side of the roof while the end is an 18 12 pitch. Building with them is known as stick framing. Each beam is notched at the bottom called a birdsmouth so that it rests flat on top of each wall.

An example of each is shown in figure 2 1. At the top where the rafters meet they are either angled to meet at a point or attached to a horizontal ridge beam. The types of rafters used in a hip roof include common jack hip and ridge beam rafters. Ben march 1 2015.

Billy hope this helps you construction master pro calculator example building is 30 wide main roof 12 12 end cap is 8 12 1. Shed gable hip gambrel and mansard. How do you figure the length and angles of the cuts on an uneven roof for the hip rafter.