girder

n. தூலம், தள ஆதாரமாக இடப்படும் பெரிய உத்தரம், தூலமாகப் பயன்படும் இரும்புப் பாளம், பாலங்களுக்கும் மோடுகளுக்கும் ஆதாரமான எஃகுக்கட்டுமானச் சட்டம்.

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Gird"er, n. Etym: [From Gird to sneer at.] Defn: One who girds; a satirist. Gird"er, n. Etym: [From Gird to encircle.] 1. One who, or that which, girds. 2. (Arch. & Engin.) Defn: 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. 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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