Sheffield Learning Resource Centre Library
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The new Resource Centre/Library for Sheffield University
consists of four floors and plant room, totalling
5,990m2 of floor space. The challenge was to source
methods and materials to accommodate the budget and rigid time
constraints while achieving the high level of finish required for
this in-situ concrete building. To satisfy these requirements,
Stephenson Holdings Ltd delivered a pioneering project, using the
innovative Hanson Cobiax slab system.
The semi-precast system comprises two-way spherical hollow
void formers made from recycled plastic within the depth of the
slab that are factory fixed to a precast soffit. This results
in concrete slabs that are 35% lighter than traditional in situ
slabs by removing the non-working dead load whilst maintaining
biaxial strength. The permanent formwork means that no finishing
work is required so the need for labour is reduced. Construction
time is reduced by up to 40% and the reduction in weight enables
greater spans to be achieved.
The use of this system resulted in increased construction
speed, reduced loads and less on-site labour.
The reduction in the volume of concrete contributes
significantly to environmental benefits and a reduction of up to
one third of embodied carbon dioxide (CO2). This represents a key
factor benefiting the construction industry's reputation where
environmental issues are concerned.
The project won the Construct Award for Innovation and Best
Practice in 2006.
: HBG Construction
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