wind 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.
References in periodicals archive ?
The performance of vertical axis wind turbine (VAWT) rotor in terms of rpm was tested at various speeds of wind source by changing direction of the wind beam striking from centre of the rotor to the tip of the rotor active side without introducing blockage in the downstream flow (free stream wind).