top beam

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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.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Top Beam. The top beam of a certain type of electrostatic precipitator consisted of a wide girder and two narrow girders.
The top beam was connected to a hydraulic actuator in the horizontal direction by four loading screws (diameter = 42 mm).
With an 11 metre high top beam level, the racking provides 12,600 pallet locations on four beam levels (plus floor level) and pallets are double stacked to reduce the number of beams required.
"Floor Surface regularity is the most important aspect for a VNA Racking facility especially when the racking has a top beam height of 15 metres," he explained.
112 Feet from the ground to the top beam of the new press box.
Dimensions of all details are revised in order to set equistable stiffness: thickness of the top beam flange for 1st segment--30 mm, for the rest - 25 mm; thickness of the bottom beam flange is 30 mm for the segments 1 and 2, the rest--25 mm; the I-sectional web thickness of segments 1 and 2 is 14 mm, the rest--12 mm; all stiffening ribs are of 10 mm thickness; joint flange plate thickness between segments 1 and 2 is 25 mm, the rest - 20 mm; openings strengthening ribs on segments 1 and 2 of 14 mm thickness and 200 mm width, in the rest--thickness of 8 mm and width of 100 mm.
Racking is arranged four-high with a top beam at 8.5m.
between that and the top beam instead of the horizontal 2x4 framing we show.
In addition, a supplemental lighting system is being installed with fixtures attached to the top beam of the west grandstand and under the roof of the east grandstand.
When placing rain curtains to drop from an arbor or gazebo, Claffey Pools makes a hollow top beam to accommodate the equipment.
The piston is fastened to the top beam through spherical surfaces, which eliminates the effect of horizontal loads during the working stroke and also makes tilted settings possible.
Special optics are used to change a Gaussian-shaped beam to a flat top beam profile at the aperture plane.