Roof Truss Component Names

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 component names.

The highest point on a truss where the sloping top chords meet. Bearing cut or seat cut. Hip this is an external angle formed by the intersection of two sloping roof planes. Modern timber roofs are mostly framed with pairs of common rafters or prefabricated wooden trusses fastened together with truss connector plates timber framed and historic buildings may be framed with principal rafters or timber roof trusses roofs are also designated as warm or cold roof depending on how they are designed and built with regard to thermal building insulation and ventilation.

Structural support of trusses usually walls normally with a timber wall plate. The wall plate width see figure 7. Roof trusses can be said to be the skeleton of the roof as you known the skeleton produce the shape of animals even humans. A horizontal cut to the bottom of a sloping bottom chord usually the width of the bearing i e.

Roof truss parts explained. 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 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. A roof also beautify a house but the primary purpose of a roof is to protect against any form of weather.

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. Rafters have a tendency to flatten under gravity thrusting outwards on the walls. The rafters when combined together help to form the truss.