GIRDER n.
ly 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 girde…
GLACIAL a.
Geol.), earth and rocks which have been transported by moving ice, land ice, or icebergs; bowlder drift. -- Glacial epoch or period (Geol.), a period during which the climate of the modern temperate regions was polar, and ice covered large portions of the northern hemisphere to the mountain tops. -- Glacial theory or…