PORR-NACHRICHTEN . 158-2010 - PORR AG

Siemens City Vienna
Dipl.-Ing. Dr. Martin Kaltenberger
Siemens City Vienna
On 10th of March 2008, JV Porr/Strabag were employed
as building contractors for the erection of
Siemens City Vienna. This office building provides
3,000 jobs, a canteen, a conference hall, underground
parking and spacious outdoor facilities. It is
situated directly beside the train station at Siemens
Street, Floridsdorf in Vienna.
Shaping the buildings architecture is an elliptical „Forum“,
an H-shaped „tower“ with an angled facade,
a rectangular “Nordspange” with angular front sides
and „Comline“, a glass covered connecting area.
With approximately 85,000 m 2 of gross floor area
and approximately 15,000 m 2 of basement area, the
site currently belongs to one of the largest buildings
in the Vienna area.
The production of the large dimensioned bored piles
as foundation for the tower was partly carried out
using water as ballast to prevent the intrusion of
stray sand into the groundwater. Energy lines in the
ground piles in conjunction with the concrete core
activation in the floor slabs support the cooling and
heating of the building.
The cantilevered 7 th Floor of the Tower which projects
out 12 m, was fixed with threaded poles in
strained piles on a steel framework to the roof, which
in turn is supported by centrifugally casted concrete
piles and transferred down into the pile foundation.
For reasons of weight reduction hollow plastic balls
were placed in the floor slabs.
One of the biggest challenges was the short construction
time frame and the implementation of the
architectural features such as the cantilever, the inclined
parts, the circular stairways and the slender
columns.
Foto: PORR-Archiv
Luftbild Südansicht
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PORR-NACHRICHTEN . 158-2010