joist

joist
joistless, adj.
/joyst/, n.
1. any of a number of small, parallel beams of timber, steel, reinforced concrete, etc., for supporting floors, ceilings, or the like.
v.t.
2. to furnish with or fix on joists.
[1325-75; ME giste < OF < L *jacitum support, n. use of neut. of L jacitus (ptp. of jacere to lie), equiv. to jaci- var. s. + -tus ptp. suffix]

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      ceiling or floor support in building construction. Joists—of timber, steel, or reinforced concrete—are laid in a parallel series across or abutting girders or a bearing wall, to which they are attached, usually by metal supports called joist hangers, or anchors.

      The ends of the joists are grooved or notched so that they are flush with the weight-bearing elements to provide a smooth horizontal. Before the floor is laid above or the ceiling laths hung below the principal joists, additional strength may be given in the form of bridging joists—diagonal braces between the horizontal beams.

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Universalium. 2010.

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  • Joist — (joist), n. [OE. giste, OF. giste, F. g[^i]te, fr. gesir to lie, F. g[ e]sir. See {Gist}.] (Arch.) A piece of timber laid horizontally, or nearly so, to which the planks of the floor, or the laths or furring strips of a ceiling, are nailed;… …   The Collaborative International Dictionary of English

  • Joist — Joist, v. t. [imp. & p. p. {Joisted}; p. pr. & vb. n. {Joisting}.] To fit or furnish with joists. Johnson. [1913 Webster] …   The Collaborative International Dictionary of English

  • joist — [joist] n. [ME giste < OFr, a bed, couch, beam < gesir, to lie < L jacere, to lie, throw: see JET1] any of the parallel planks or beams that hold up the planks of a floor or the laths of a ceiling: see FRAME vt. to provide with joists …   English World dictionary

  • joist — [dʒɔıst] n [Date: 1300 1400; : Old French; Origin: giste, from Latin jacere to lie ] one of the beams that support a floor or ceiling …   Dictionary of contemporary English

  • joist — [ dʒɔıst ] noun count a long piece of wood or metal put below a floor or ceiling to support it …   Usage of the words and phrases in modern English

  • joist — (n.) early 14c. (late 13c. in Anglo Latin), from O.Fr. giste beam supporting a bridge (Mod.Fr. gîte), noun use of fem. pp. of gesir to lie, from L. iacere to lie, rest, related to iacere to throw (see JET (Cf. jet) (v.)). Notion is of wooden beam …   Etymology dictionary

  • joist — ► NOUN ▪ a length of timber or steel supporting part of the structure of a building. DERIVATIVES joisted adjective. ORIGIN Old French giste beam supporting a bridge , from Latin jacere lie down …   English terms dictionary

  • Joist — A roof made with a concrete slab with concrete joists A joist, in architecture and engineering, is one of the horizontal supporting members that run from wall to wall, wall to beam, or beam to beam to support a ceiling, roof, or floor. It may be… …   Wikipedia

  • joist — 1. noun A piece of timber laid horizontally, or nearly so, to which the planks of the floor, or the laths or furring strips of a ceiling, are nailed; called, according to its position or use, binding joist, bridging joist, ceiling joist, trimming …   Wiktionary

  • Joist — Recorded in England in a wide range of spellings including Jest, Jeste, Joce, Jose, Joist, Jost, Joust and Joost, this is a surname of Germanic, Dutch, Breton and Norman Franch origins. It is a cognate of the surname Joyce , itself deriving from… …   Surnames reference

  • joist — [14] Etymologically, a joist is a wooden beam on which boards ‘lie’ down. The word’s ultimate ancestor is the Latin verb jacēre ‘lie down’ (from which English also gets adjacent). Its neuter past participle jacitum was taken into Old French as a… …   The Hutchinson dictionary of word origins

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