Abstract: A ceiling/floor or ceiling/roof structure comprising a plurality of substantially parallel substantially horizontally extending joists, each joist being supported at the two opposed ends thereof, a first set of transverse members resting on the top of and secured to the top of at least some of said joists, and a further set of transverse members extending underneath and connected to the lower surfaces of at least some of said joists, the said structure being adapted to be associated with ceiling and/or roofing or flooring materials.

Abstract: A bracket 13 for use at a node point in a framework between two horizontal members 11, 11' and vertical member 12, said bracket comprising a first channel member 19 having a base 20 and two upstanding side walls 23, 25, the longitudinal axis of which is aligned with the axis of said two horizontal members, said channel member 19 being provided with means defining two transverse partition walls 27, 28 defining a space within the first channel member intermediate the ends thereof for accommodating the base of the substantially vertical member 12, and defining spaces between the partition walls and the ends of the channel to accommodate the ends of the horizontal members, a further element 14 being provided for mounting said channel member 19 on a sub-structure 1.