Roof Truss Component Names

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.

Roof truss component names.

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 roof also beautify a house but the primary purpose of a roof is to protect against any form of weather. The wall plate width see figure 7. Bearing cut or seat cut.

Structural support of trusses usually walls normally with a timber wall plate. 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. A slight vertical cut usually less than 75mm at the. 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.

The rafters when combined together help to form the truss. Roof truss parts explained. A horizontal cut to the bottom of a sloping bottom chord usually the width of the bearing i e. The highest point on a truss where the sloping top chords meet.

Rafters have a tendency to flatten under gravity thrusting outwards on the walls. Hip this is an external angle formed by the intersection of two sloping roof planes. 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.