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by up to 8 m,” explain Gabbert and Müller with one voice. Any values needed
for planning the use of void former systems were calculated for the demanding
architectural geometry in the SPRINGER QUARTIER using “Quick and Light”
software, which Cobiax provides to all structural engineers free of charge.
These structural design specifications were subsequently incorporated into the
structural and reinforcement plans by the Ed. Züblin AG Hamburg Technical
Office, and so could be implemented on the construction site.
Inner city location demands complex logistics
A particular challenge for large-scale construction sites in inner-city locations
was the limited space available and the requirement to minimise the impact on
normal city traffic. “Due to the SPRINGER QUARTIER’s central location, the
time slots when materials could be delivered to the construction site were very
tight. What’s more, there was only limited space available on site for unloading
delivery vehicles, “ reports Christoph Wieghaus, site manager for Ed. Züblin
AG. Ed. Züblin AG is part of the STRABAG SE group of companies, one of
Europe’s leading construction services technology groups.
Since a total of 5,500 tonnes of steel
and about 34,000 m³ of concrete
were needed for shell construction,
all deliveries had to be precisely
coordinated to avoid traffic jams in
the surrounding streets. Delivering
the Cobiax SL void former modules
to the construction site over a total of
seven loads was also included in the
time planning.
We pre-assembled the void former
systems for the first delivery at the
HEINZE Cobiax Deutschland
factory, so the concreting work
could start straight away. For the
remaining six, the individual
components were assembled and
processed on site instead.
“After finishing the first mid-layer
slabs, those areas could be used as
temporary storage and assembly
space for the Cobiax modules,”
explained Wieghaus.
“After pre-assembling the void
former modules, we then put them
into position on the individual slab
sections.”
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