Collar beam / collar tie: A horizontal timber uniting two opposite common rafters at a point below the ridge, usually in the upper half of the rafter length ...
Collar beam
in a roof, a horizontal beam framed to and serving to tie together a pair of rafters at some distance above wall-plate level.
Colonnette jambs ...
Collar Beam/Tie A horizontal tie beam of a roof, which is joined to opposing rafters to prevent spreading of the roof structure. Normally at a level about half the height of the roof. Absence, removal or weakening can lead to roof spread.
Collar Beam - Horizontal members spanning roof rafters to supplement roof strength and/or form ceiling joist in half-story construction.
Collar beam
- a horizontal timber which ties rafters together at a height above the wall plate, ie above the level of a tie beam.
See roof.
Collar Beam - horizontal tie beam of a roof, which is joined to opposing rafters at a level above that of the wall plates.
Collar - horizontal timber member designed to restrain opposing roof slopes.
Arched braces: curved paired braces forming an arch, connecting wall or post below with tie-beam or collar beam above. Passing braces: long straight braces passing across other members of the truss.
Wind beam - A collar beam
Wind, winding - The twist of converted timber. It is a type of warp
Winder - A tapered tread in a turning part of a staircase (or circular stair) radiating from a common springing point at the newel post ...
are supported by curved braces from the wall; in Westminster Hall, in order to give greater strength to the framing, a large arched piece of timber is carried across the hall, rising from the bottom of the wall piece to the centre of the collar beam, ...
 See also: Collar, Beam, Post, Frame, Timber
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