Wood beam

Details Wood beam Wood beam

E - Fixed Constructions

04

C

20/48, 154/97

E04C 3/14 (2006.01)

Patent

CA 1067272

ABSTRACT OF THE DISCLOSURE A chipboard beam made of glue coated chips has top and bottom layers extending for the full length of the beam consisting of elongated chips, that may be for example as much as 5cm in length oriented with their fibers in the longitudinal direction of the beam. The middle layer is made of flat chips having random fiber orientations in a vertical plane parallel to the long dimension of the beam. The chips are glued together under heat and pressure in a press, with the result that there is great coherence both between and within the layers. The pressing is done with the wider cross-sectional dimension of the beam horizontal, so that at this stage the layers of chips are side-by- side longitudinal stringers. In order to provide higher density in the outer layers (top and bottom layers in the load bearing position of the beam) after a preliminary pressing of the bed downwards against the support of the bed, a lateral pressing of the edges with higher pressure is performed which provides increasing density of the edges, which become the top and bottom of the beam.

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