Rafter

Rafter

: "For the tennis player, see Patrick Rafter."A rafter is one of a series of sloped structural members, that extend from the ridge or hip to the downslope perimeter or eave, designed to support the roof deck and its associated loads. [http://www.nrca.net/consumer/technical/manual.com]

A type of beam, which supports the roof of a building. In home construction, rafters are typically made of wood. Exposed rafters are a feature of traditional roof styles.

In many buildings, rafters have been replaced by engineered trusses (trussed rafters), normally because of span limitations and/or roof load (weight from above).

Carpenters build rafters to frame the pitch of a roof. Roof pitch is measured as rise over span (a unitless fraction). In the United States slope is given in units of pitch for the ratio of inches (in) rise per 12 in of run or inches of rise per 1 foot (ft) of run. For example, "4:12 pitch" would mean 4 in of rise over 12 in of run and "4 pitch(es)" would mean 4 in of rise over convert|1|ft|m|abbr=on of run. In Australia, a roof pitch is given in degrees (°) of inclination.

In sports arenas, rafters are used to drape championship banners.

ee also

*Soffit
*Fascia (architecture)
*Purlin
*Joist


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Look at other dictionaries:

  • Rafter — Raft er (r[.a]ft [ e]r), n. A raftsman. [1913 Webster] …   The Collaborative International Dictionary of English

  • Rafter — Raft er, n. [AS. r[ae]fter; akin to E. raft, n. See {Raft}.] (Arch.) Originally, any rough and somewhat heavy piece of timber. Now, commonly, one of the timbers of a roof which are put on sloping, according to the inclination of the roof. See… …   The Collaborative International Dictionary of English

  • Rafter — Raft er, v. t. 1. To make into rafters, as timber. [1913 Webster] 2. To furnish with rafters, as a house. [1913 Webster] 3. (Agric.) To plow so as to turn the grass side of each furrow upon an unplowed ridge; to ridge. [Eng.] [1913 Webster] …   The Collaborative International Dictionary of English

  • rafter — (n.) sloping timber of a roof, O.E. ræftras (W.Saxon), reftras (Mercian), both plural, related to O.N. raptr log (see RAFT (Cf. raft) (n.1)), from P.Gmc. *raf …   Etymology dictionary

  • rafter — rȁfter m DEFINICIJA 1. sport onaj koji se bavi raftingom 2. splavar ETIMOLOGIJA vidi raft …   Hrvatski jezični portal

  • rafter — ► NOUN ▪ a beam forming part of the internal framework of a roof. DERIVATIVES raftered adjective. ORIGIN Old English, related to RAFT(Cf. ↑rafting) …   English terms dictionary

  • rafter — rafter1 [raf′tər, räf′tər] n. [ME < OE ræfter; akin to ON raptr, log < IE base * rep , post, beam] any of the boards or planks that slope from the ridge of a roof to the eaves and serve to support the roof: see FRAME rafter2 [raf′tər,… …   English World dictionary

  • Rafter — Patrick Rafter Nationalität:  Australien Geburtstag: 28. Dezember 1972 Größe: 185 cm Gewicht: 86 kg 1. Profisaison: 1991 …   Deutsch Wikipedia

  • Rafter — This unusual surname recorded in the spellings of Rafter, Raftiss and Wrafter, is Irish. It seems to originate from the popular clan name of O Raferty, as it seems that in the registers of County Mayo, the spellings are quite interchangeable upto …   Surnames reference

  • rafter — I (New American Roget s College Thesaurus) n. beam, timber, crosspiece, joist. See support. II (Roget s IV) n. Syn. beam, timber, crossbeam, roof beam, rib, common rafter, hip rafter, jack rafter, valley rafter; see also beam 1 , timber 2 . III… …   English dictionary for students

  • Rafter — /ˈraftə/ (say rahftuh) noun Pat(rick), born 1972, Australian tennis player; US Open champion 1997, 1998; Australian of the Year 2002. Pat Rafter was born in Mount Isa, Qld. He became a professional tennis player in 1991. As well as his wins in… …  

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