Town Town - Office Tower

Marking the gateway to Vienna towards the east, the Town Town Office Tower in Erdberg is the main element of a developing urban zone. Its location directly on the subway line and in proximity to the highway to the airport connects the project ideally to the city; with regard to urban development guidelines this offers the opportunity for a distinctive architectonic form. By combining two typologies (high rise slab and cylindrical tower) and with a cleverly positioned central circulation and access core as “hinge”, the building achieves a very high efficiency. The proportion of net usable floor area to gross floor area is 86% in contrast to 82% in a conventional building. The shape of the high rise is also optimized for the implementation of an integrated and energy-active building system, which explains its excellent performance in terms of sustainability. The crystalline forms of the metallic skin were developed in simulations of dynamic wind forces in order to be radar compatible and climatically, acoustically and functionally optimized. The skin envelopes both the slab and the tower, thus merging them into a single hybrid form. Through the main entrance from the plaza the visitors step into a multi-level lobby as communication zone with a flight of stairs, which lead to the semi-public areas like the café, event spaces as well as special areas including the double height conference area. Further special areas like the canteen and the IT center can be reached via the two elevator groups, which also connect to the standard floors with offices: one group with four elevators accesses the first 16 floors of the high rise, the other group with three elevators is reserved for the floors 16 to 26. On the 16th floor at 70 m of height - at the joint of slab and tower - the Sky Lobby with roof terraces, and on the 26th floor at 105 m of height the two story Sky Lounge with a gallery are situated. Both areas serve as communication zones and offer internal meeting areas with a panoramic view towards the landscape of the Danube in the east and the urban landscape of Vienna.