Abstract: A roofing truss (3) has an end plate (10) for engagement against a flange (1a) of a supporting I-beam (1). To aid assembly of the truss and I-beam and to locate the same after assembly the upper end of the plate (10) carries on the surface to face the I-beam a bifurcated guide means (11, 12) arranged to extend over the upper portions of the flange (1a) and to engage on either side of a central web (1b) of the I-beam (1).

Abstract: A pallet system includes a modular base element providing a horizontal supporting surface (17) and, at each corner, an array of vertical sockets (6, 7, 8) and a plurality of modular side elements having uprights (20, 21) arranged to mate with the sockets of the base element in order to stand vertically at a horizontal edge of the latter, the side elements being capable of being assembled with the base in either of two relatively horizontally displaced positions in one of which a vertical edge (24) thereof can engage and locate an upright (20) of a similar element assembled to an adjacent horizontal edge of the same base element, to form a corner, and in the other of which the vertical edge (24) can engage and locate an upright (20) of a similar element assembled to an adjacent horizontal edge of another base element mating with the first, to form an extended coplanar vertical wall.