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Showing posts from April, 2021

Residential Roof Truss Design

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  Roof trusses are an established structural design used to support buildings over a wide area of space. Trusses are made of wood, metal, concrete or a combination of these materials and have several main components such as joint angle, pole pieces, clevis rings and tiebacks. Often, timber roof trusses were used for hundreds of years to support roof and floor systems on commercial buildings. However, with changing building and construction techniques, truss designs have become increasingly less attractive to most building contractors due to the increased use of aluminum and steel. For residential and light commercial structures, low-priced economical trusses can be selected using standard tongue-and-groove joinery method to avoid expensive framing materials. Low-priced roof trusses with standard tongue-and-groove joinery system usually include four clevis rings with two on each end and one crossbrace. Common types of timber trusses used in residential and light commercial structur...

Timber Roof Trusses

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 A timber roof truss , also known as shingle truss, is a vertical structural frame of timbers primarily used to support a roof and to bridge the open space above a building. Trusses generally occur at periodic intervals, connected by long horizontal timbers like purlins, at right angles to each other. The open space between the timbers is called a bay. Bay roofs are common in North America and are becoming more popular in Europe, particularly where open space is at a premium. These roofs have many advantages over conventional roofs, such as thermal insulation, noise insulation, and reduced energy bills. However, in some regions, like the USA, timber roof trusses can be more expensive than conventional roofs. Timber roofs are relatively simple to install and require very little maintenance. In the right location, they can also look very attractive. There are two types of timber trusses - straight and sloping. Straight timber trusses are constructed by crossing the bottom half of a c...