The project includes a comprehensive
restoration of the old hothouse in the Botanic Garden in Aarhus
originally designed by C.F. Møller Architects.
In the restoration the palm house will become a
new botanical knowledge centre, at the same time as the complex is extended
with a new, 18 metres
high tropical hothouse, in which the public can go exploring among the
tree-tops.
The existing snail-shaped hothouse was well
adapted to its surroundings, and it has been important to bear the existing
architectural values in mind when designing the new one.
The new hothouse also uses the organic form,
which is, at the same time, based on energy-conserving design solutions and on
a knowledge of materials, indoor climate and technology.
Advanced calculations have ensured that form
and energy consumption interact in the best possible manner.
The domed shape and the building's orientation
in relation to the points of the compass have been chosen because this precise
format gives the smallest surface area coupled with the largest volume, as well
as the best possible sunlight incidence in winter, and the least possible in
summer.
The support structure consists of 10 steel
arches, which fan out around a longitudinal and a transverse axis, creating a
net of rectangles of varying sizes.
FormTL planned and designed a cover for these
arches made mainly of double-layered ETFE cushions, which are affixed with
biaxially bent profiles due to their complex structure.
On the south-facing side, the cushions used
were made with three layers, two of which were printed. Through changes in
pressure, the relative positions of these printed foils can be adjusted.
This can reduce or increase, as desired, the
translucence of the cushions, changing the light and heat input of the
building.
Location: Aarhus, Denmark
Architects: C.F. Møller
Engineering: Søren Jensen Rådgivende Ingeniører
Landscape: C.F. Møller
Size: 3300 m2
(1242 m2
new tropical hothouse and 2071
m2 renovation and rebuild of
existing hothouse
Year: 2009-2013
Competition: 1. prize in architectural
competition. 2009
Client: The University
of Aarhus by Danish University
and Property Agency
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