Bürohaus Praterstern 3

Bürohaus Praterstern 3
Office and Commercial building, Vienna
Atrium at sunset
Facade at main entrance
Facts & Figures
Company:
Porr Bau GmbH
Customer:
ÖBB Immobilien GmbH
Project type:
Office and Commercial building
Land / city:
Austria, Vienna
Commencement:
06.2009
Project status:
Completed
Completion:
04.2011
Contact:
Bmstr. Ing. Stefan Wusits,
Roman Gutwenger
Total floor area:
31.240 m²
Floor space:
20.500 m²
Cement:
17.000 m³
Concrete reinforcement: 1.700 to
Project description
News headquater of ÖBB Infrastruktur AG.
PORR Bau GmbH (Region 1 / Major Projects Building
Construction and Building Construction Vienna New
Buildings) built the new headquarters of ÖBB
Infrastruktur AG at the newly designed Praterstern in
Vienna’s 2nd district with a construction time of
approximately 2 years. The eight-storeyed office
building consists of two nearly parallel buildings
which are connected by external passage ways and
a roofed central courtyard. The atrium can be
accessed via the main entrance’s staircase and
forms the core of the building which functions as a
place of communication and event location. Offices
for 800 employees were created on a gross floor
area of approx. 31,240 m². The building also
includes a conference centre, staff restaurant, ÖBB
shop and a fitness studio.
challenge for the production of the reinforced
concrete slabs (numerous work steps, interfaces and
delivery times of components).
Among the building’s architectural highlights are its
partially double-layered glass facades combined
with back-ventilated façade components and the
approximately 1,000m² foil cushion roof above the
courtyard which was installed above the top floor
with steel girders spanning 26m.
Closing remark
Due to the cooperative partnership of all participants
in this project the general contractor works were
completed on schedule in the 2nd quarter of 2011
and to the full satisfaction of the client.
Building construction
Construction works commenced on time right after
the site was handed over. Despite difficult working
conditions – restricted space, high groundwater
level, numerous installations and partially
contaminated excavation material – the necessary
foundation and carcassing works were completed on
schedule.
The carcass was built on a floor area of approx.
5,000m². Bentonite sealing was applied to
waterproof the foundation due to the local ground
water conditions.
Displacers were used for the building’s ceilings to
reduce its weight and make its foundation easier. Its
combination with the planned thermal activation of
the building (cooling for office floors) was a
PORR AG | Absberggasse 47, A-1100 Wien | T | F | [email protected] | ZZZSRUUJURXSFRP
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