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Beam vibrators

In their simplest form, beam vibrators consist are petrol-driven or electrical vibrators mounted on a suitable length timber beam, spanning between side formwork, that are used level and compact concrete slabs. Lightweight, long-span beams (also known as razorbacks) consist of a series of triangular shaped sections to give an extremely wide range of lengths, from about 3 m to more than 30 m.

 
Acknowledgement: The Concrete Society
 

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Concrete on site 5: Placing and compacting