structures construction work. bf. potsdam pirschheide new platforms. construction of two outer platforms (1 and 2) h=0.76cm, replacement construction of platform 3 (h=76cm) with barrier-free access to new platforms 1 and 2, lighting and weather protection with construction of two platform roofs on platforms 1 and 2, demolition of existing platforms, platform bridges and superstructures (berlin outer ring) as well as the passenger / baggage tunnel except for sections that are designed as bat quarters.