Collar beam

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(redirected from top beam)
(Arch.) a horizontal piece of timber connecting and tying together two opposite rafters; - also, called simply collar.

See also: Collar

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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References in periodicals archive
The Mustangs' Emma Hallin, who posted the top beam score of 9.1 and was the final gymnast to perform, also was second in the all around (36.55), on floor (9.45), and fifth on bars (8.8).
Features include four, 8-inch swivel casters with four-position locks, and with optional V-groove casters for track guidance, or an optional lever ratchet for top beam height adjustment.
centers; integral, continuous concrete base and top beam members; and, patent-pending, galvanized steel ShearStrip.
A ceremony was held earlier this month when the top beam was hoisted into place on the 73rd floor.
I noticed a worn-shiny spot on the top beam, just about the size of a narrow cowboy's butt.
RSVP Med Spa uses various techniques such as Q - Switched Laser Technology, Active Q - Switched Mode, Flat Top Beam Technology and Q Plus C for tattoo removal.
A NEW swimming pool is set to make a splash after the top beam was placed on the PS7.5million extension of a Coventry leisure centre.
The reinforced concrete top beam with a cross-section of 400 mm by 400 mm was casted as well, through which the horizontal loads were applied to the wall.
To the right of the fireplace, one of the old doorways can be seen with its curved top beam and old hinges on the door.
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