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Compass rafter: A rafter curved or bowed on the top (the top surface of a rafter is called its "back") or both the top and bottom surfaces. Curb rafter: The upper rafters in a curb (kerb, gambrel, Mansard roof) roof. Hip rafter (angle rafter): The rafter in the corners of a hip roof. The foot of a hip rafter lands on a dragon beam.
The simplest form of roof framing is a common rafter roof. This roof framing has nothing but rafters and a tie beam at the bottoms of the rafters. The next step in the development of roof framing was to add a collar, called a collar beam roof. Collar beam roofs are suitable for spans up to around (4.5 meters). [5]
In the UK, a concrete tiled roof would normally have rafters at 600 mm (24 in) centers, roof battens at 300 mm (12 in) centers and ceiling joists at 400 mm (16 in) centers. The United States still uses imperial units of measurement and framing members are typically spaced sixteen or twenty-four inches apart.
The Tomlinson Lumber Co sold pre-cut materials for a 34 by 50 feet (10 m × 15 m) dairy barn with a Gothic-arched roof supported by three-ply rafters in 1958 throughout Minnesota. [ 10 ] The first published plans by an architect for a Gothic-arch barn appeared in 1916.
Two king post trusses linked to support a roof. Key:1: ridge beam, 2: purlins, 3: common rafters. This is an example of a "double roof" with principal rafters and common rafters. 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.
An example of an A-frame house in Gillette, Wyoming Traditional A-frame thatched house (palheiro), Santana, Madeira, Portugal An A-frame house owned and restored by Nicky Panicci in the Hollywood Hills, an example of an architectural A-frame. A historic photograph of an A-frame sod roof house in the Netherlands. Image: Cultural Heritage Agency ...
Pyramid roof: A steep hip roof on a square building. Pyatthat: A multi-tiered and spired roof commonly found in Burmese royal and Buddhist architecture. Tented: A type of polygonal hipped roof with steeply pitched slopes rising to a peak; Helm roof, Rhenish helm: A pyramidal roof with gable ends; often found on church towers.
This was used to prevent roof uplift. [13] The vaulted viga roof is another type of structural system using vigas, using parapets on the two side and eaves on the ends. The roof is left exposed on the interior and latillas are placed parallel with others in a diagonal pattern. [14]