Arrangement of truss cords

An arrangement of truss beams comprising:

• two chord beams with at least one cast chord (8), and of building elements with a slab (9) with strengthening truss beams (15) with at least one cast chord (8), in which the strengthening truss beams contain a beam web assembly (1,4) consisting of truss web members of a rod, wire or strip iron material, which truss web members are being bent and joined to such design that the truss web members, when seen in a longitudinal direction of the chord, form a zigzag or zigzag-like pattern or, as truss braces being placed diagonally in relation to the chord's (8) longitudinal direction, into zigzag or saw tooth shape, thus forming a truss web, fastened to the chords in a truss beam or to the chord and the slab in a building element,
• the beam web assembly having several truss web members consisting of a rod bent to a triangular shape or a triangle like shape (1,4),
• each truss web member having hook-like bends (2,2′) in both ends, the bends being mirror images of each other,
• a middle part of said web member being straight and forming a base in said triangle shaped member,
• said truss web member is being bent, in a main symmetrical view, around a middle of said base, the straight ends forming the side parts in said triangle shaped web member, and
• said end bends (2,2′) being oriented beside each other when seen in the chord (8) longitudinal direction and wrapped over adjacent to each other so that said straight ends of said web members intersect each other in one of said triangle corners, and together with said end bends (2,2′) forming a loop so that one with the chord (8) longitudinal reinforcement rod (6) is threaded inside said bends,
• said end bends are somewhat or entirely transverse to the chord longitudinal direction and that said bends (2,2′) are cast inside the chord (8).