Abstract: A beam having flanges (10, 11) of wood and a web interconnecting said flanges and consisting of metal rods (13) inclined relative to each other in the plane of the web like the bars in a trapezoidal curve and having end portions (14 and 15, respectively) bent in the same plane and at the same angle but in opposite directions and fixed in recessed bores (26) in the flanges (10, 11). Between the central portions and the end portions (14, 15) of the metal rods, washers (28) are accommodated in the recesses with close fit. The end portions (14, 15) are fixed either in blind bores (26) by engaging the wall of the bore, or in throughbores by means of a nut or the like engaging the end portion and abutting against the bottom of a recess of the end of the bore remote from the web. Preferably, the end portions (14, 15) are glued in their bores and the washers in their recesses.

Abstract: A beam having flanges composed of wood pieces and a web consisting of a wire member bent alternately back and forth to extend between and being attached to the flanges at the bends. Each flange comprises at least two wood pieces which extend longitudinally of the beam and are joined together by gluing, at least one of the wood pieces having recesses in the surface joined with the other wood piece, which recesses are adapted to receive the bends of the wire member. The beam is manufactured in that recesses are arranged at regular intervals in a long wood piece, whereupon two such wood pieces provided with recesses are placed at a distance from one another corresponding to the distance between the flanges of the beam to be made, with the recesses in one wood piece exactly opposite to points situated halfway between the recesses in the other wood piece.