Roof Truss Parts Names

Rafters these are wooden beams that run from the top of the roof to the bottom.

Roof truss parts names.

The highest point on a truss where the sloping top chords meet. Bearing cut or seat cut. A roof also beautify a house but the primary purpose of a roof is to protect against any form of weather. Structural support of trusses usually walls normally with a timber wall plate.

The rafters when combined together help to form the truss. Tie down fixings tie down fixings are used to resist uplift and shear forces lateral loads in floor framing wall framing and roof framing. A horizontal cut to the bottom of a sloping bottom chord usually the width of the bearing i e. A roof is the uppermost parts of any building which give protection against animals and most especially weather be it rain snow sunlight heat wind and so on.

A horizontal timber or metal resting at the peak of the roof the rafters and trusses are connected to the ridge board for a cohesive framework. Butt cut a small 90 degree cut at the end of a truss usually 1 4. A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load. A timber roof truss is a structural framework of timbers designed to bridge the space above a room and to provide support for a roof trusses usually occur at regular intervals linked by longitudinal timbers such as purlins the space between each truss is known as a bay.

Heel height the thickness of a truss at the end of the bottom chord. Just as there are many types of roofs with many roof parts there are many different types of roof trusses this extensive article explains through a series of custom truss diagrams the different truss configurations you can use for various roofs. Parts of a roof the main structural parts of a roof are ceiling joists ridge board jack rafter hip rafter common rafters creeper rafters raking plates out riggers and noggings or last rafter overhang. It s important to note that the external forces that appear here and their reactions are acting only in the node area but the way the structure is built allows the dispersion of these.

Hip this is an external angle formed by the intersection of two sloping roof planes. A slight vertical cut usually less than 75mm at the. Bottom chord splice if the truss span is too long for two bottom chords the middle bottom chord is referred to as the splice. One of a series of diagonal members of the truss that meet at the apex in order to support the roof deck and its loads.

Roof truss parts explained. Rafters have a tendency to flatten under gravity thrusting outwards on the walls. The wall plate width see figure 7. Horizontal beams supported by posts and used to support the mid span of rafters to cover longer spans these are used in large buildings like the traditional large old barns in the us.

Truss the truss is a framework comprised of wooden beams that helps to support the roof. Roof trusses can be said to be the skeleton of the roof as you known the skeleton produce the shape of animals even humans. While this article focuses on configurations we also have a very cool set of illustrations showcasing the different parts anatomy of roof trusses.