单词	collar beam
释义	Collar beam (Arch.) a horizontal piece of timber connecting and tying together two opposite rafters; - also, called simply collar. See also: Collar collar beam collar beam [′käl·ər ‚bēm] (building construction) A tie beam in a roof truss connecting the rafters well above the wall plate. collar beam A horizontal member that ties together two opposite common rafters, usually at a point halfway up the length of the rafters below the ridge. See also: beam collar beam, spanpiece, sparpiece, top beam, wind beam collar beam A horizontal member which ties together (and stiffens) two opposite common rafters, usually at a point about halfway up the rafters in a collar beam roof. ThesaurusSeeking post
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