CONNECTING ELEMENTS BETWEEN PRECAST CONCRETE COMPONENTS
Lattice girders are three-dimensional, industrially prefabricated reinforcing elements. They consist of an upper chord, two lower chords, and continuous diagonal truss wires or a combination of diagonal and vertical wires. Truss wires are connected to the chords by means of electric resistance welding.
The bottom chords are usually made of ribbed reinforcing steel, and the top chords and diagonals of smooth or ribbed reinforcing steel. Depending on the requirements, reinforcing steels of strength classes B500 or B550 are used.