Hamburg-Alsterdorf is an above-ground metro station where the original historic shelter was to be connected to a modern section of roofing with an underpass and lift shaft. The production documentation we supplied covered the steel structure of the new part of the roof with distinctive triangular columns, including cladding, cladding and awnings for the lift shaft, glass railings around the underpass exit, including static and dynamic assessment, service railings and stairs for staff.