At the time of awarding the contract, a real girder grating, a fully welded construction, was put out to tender. Together with Lamparter, it was possible to optimize the system to create a solution that was both economical and still appealing in terms of design: the primary, secondary, and tertiary beams of the three-bar articulated grating, which are of diDuring the contract awarding process, a real girder grating that was fully welded was put out for tender. Lamparter collaborated with the client to optimize the system and come up with a cost-effective solution that was still aesthetically pleasing. The three-bar articulated grating's primary, secondary, and tertiary beams have different thicknesses, and they were prefabricated as individual components that were easily assembled with concealed detailing.fferent thicknesses, could be prefabricated as individual components and easily assembled thanks to the concealed detailing.