Power lines are our main traffic arteries. Large projects often include several hundred kilometers of cable with totally different cross sections. This may also include busbars for the medium and low voltage segment. Other designs of the routing systems are known, for example, as cable trays, mesh trays, risers or underfloor and parapet ducts. For this purpose, a diligent and space saving planning of the tray routing is required to design the actual tray construction as efficiently as possible, also with respect to the cable routing of other trades.