An old building in a new skin
The architects wanted to preserve the hangar atmosphere in the new terminal. Blees & Kampmann, the planning company, came up with the concept of building a new construction inside the old one, or a “house within a house.” This resulted in some rather specific difficulties, not only because the old structure had to be taken into account, but also today’s safety standards. The old building was stripped down to the bare supporting structure and given a new facade made of glass, brick and sheet metal. A second construction made of reinforced concrete was built inside the original structure. Due to the suburban train connection, the foundations had to be laid at a depth of eight meters, which entailed underpinning the existing foundation. A further four levels were built above the rails. Passenger transportation is located only in the central nave. The east aisle houses the administration and waiting areas. The west aisle was merely covered with a facade, which allows for a possible expansion of the terminal in a second construction phase.
The spectacular route to the departure level starts from a tubular glass skywalk that connects the adjacent parking garage with the terminal and ends in the enormous check-in hall. As in the past, the large glass surfaces provide daylight. Like glass boxes, stores, travel agencies and airline counters are fitted in between the double columns that make up the sidewalls. A glass cylinder roughly 18 meters in diameter cuts through both gallery levels and conveys an impression of the building’s dimensions even in the waiting areas below.
Security in case of fire