Collar beam | Article about collar beam by The Free Dictionary
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collar beam[′käl·ər ‚bēm]
A tie beam in a roof truss connecting the rafters well above the wall plate.
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
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.
References in periodicals archive
At the ends of the roof structure has a choice about the cripple collar beam
This flintstone former infirmary, (whose well-preserved roof with its collar beams
is considered one of the finest examples of 14th-century craftsmanship in this part of England), had seen service as a schoolroom and a barn.
Two, two-by-six inch collar beams
crossed at right angles some nine feet off the floor tying four of the hip rafters together.