Patent ID: 8851096
Filing Date: 2014-10-07
Classification: E04C,E04H

Abstract:
1. A preassembled lattice beam for building a truss of a roof of a structure, in particular such as a tent or a stretched fabric structure, essentially made up of a lower rib and an upper rib connected to one another by at least one diagonal secured to said lower and upper ribs so as to be able to pivot between the transport position, in which said lower and upper ribs are close together, and a mounting position in which said lower and upper ribs are spaced apart from one another, preferably so as to form an acute angle, between the at least one diagonal and one of the two ribs, and having at least one stationary upright connecting in said mounting position at right angles to both the lower and upper ribs, at least one rib among the lower and upper ribs, each being made in the form of an essentially H-shaped profile having an open side receiving, on the inner surfaces of each side wing forming the feet of the H, at least one first pivoting fastening means of the pivoting diagonal(s) and at least one second, rigid fastening means of the stationary upright(s), characterized in that the profile with the essentially H-shaped section has a closed side opposite the open side and separated therefrom by at least one first crosspiece, extending over the entire longitudinal length of said profile, the ends of each side wing forming the feet of the H on that side being connected by at least one second crosspiece, extending over the entire longitudinal length of said profile.