The new main headquarters of the international engineering office schlaich bergermann and partner is located in the west of Stuttgart. The interior design of the revitalized seven-storey office building from the 1970s is defined by its transparent room structures. Strähle‘s System 3400 from was used to separate the offices and conference rooms from the open workspaces. Due to the relatively low ceiling height, the architects of the Ippolito Fleitz Group were careful to reduce the heights of the floor and ceiling sections to a minimum. The twopart aluminium sections of the System 3400 make installation easy. The variable sections were glazed either with 16 mm thick laminated safety glass or 10 mm thick toughened safety glass depending on their sound insulation requirements. Used together with acoustic film, the laminated safety glass attains a sound insulation value of 41 dB (Rwp).