Steel cable in a rectangular Jäkel-tube welded with L-shape angle profile, fixed by elements of plastic joined by two lines.
Steel cable - the main bearing element is placed in a tube to enable higher cable tension
Tube - the supporting fixation element from steel/dural/plastic or combined materials
Example: thin-walled Jäkel-tube from steel and L-shape angle profile from dural
The steel construction without cables requires two parallel thick-walled tubes.
The pure cable solution without tubes yields to a crash in the case of a cable failure.
The cable failure of the APV-IN-system is compensated by the stability of the tubes alone.
Comparison with examples of the current "pure" solutions:
Cables only solution, Austria
Beams only solution, Germany