lattice girder

2 definitions found

lattice girder - Collaborative International Dictionary of English v.0.48 :

  Girder \Gird"er\, n. [From Gird to encircle.]
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     1. One who, or that which, girds.
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     2. (Arch. & Engin.) A main beam; a stright, horizontal beam
        to span an opening or carry weight, such as ends of floor
        beams, etc.; hence, a framed or built-up member
        discharging the same office, technically called a compound
        girder. See Illusts. of Frame, and Doubleframed floor,
        under Double.
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     Bowstring girder, Box girder, etc. See under Bowstring,
        Box, etc.
  
     Girder bridge. See under Bridge.
  
     Lattice girder, a girder consisting of longitudinal bars
        united by diagonal crossing bars.
  
     Half-lattice girder, a girder consisting of horizontal
        upper and lower bars connected by a series of diagonal
        bars sloping alternately in opposite directions so as to
        divide the space between the bars into a series of
        triangles. --Knight.
  
     Sandwich girder, a girder consisting of two parallel wooden
        beams, between which is an iron plate, the whole clamped
        together by iron bolts.
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  Lattice \Lat"tice\, n. [OE. latis, F. lattis lathwork, fr. latte
     lath. See Latten, 1st Lath.]
     1. Any work of wood, metal, plastic, or other solid material,
        made by crossing a series of parallel laths, or thin
        strips, with another series at a diagonal angle, and
        forming a network with openings between the strips; as,
        the lattice of a window; -- called also latticework.
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              The mother of Sisera looked out at a window, and
              cried through the lattice.            --Judg. v. 28.
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     2. (Her.) The representation of a piece of latticework used
        as a bearing, the bands being vertical and horizontal.
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     3. (Crystallography) The arrangement of atoms or molecules in
        a crystal, represented as a repeating arrangement of
        points in space, each point representing the location of
        an atom or molecule; called also crystal lattice and
        space lattice.
        [PJC]
  
     Lattice bridge, a bridge supported by lattice girders, or
        latticework trusses.
  
     Lattice girder (Arch.), a girder of which the wed consists
        of diagonal pieces crossing each other in the manner of
        latticework.
  
     Lattice plant (Bot.), an aquatic plant of Madagascar
        (Ouvirandra fenestralis), whose leaves have interstices
        between their ribs and cross veins, so as to resemble
        latticework. A second species is Ouvirandra Berneriana.
        The genus is merged in Aponogeton by recent authors.
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