The roof form
follows a series of parametric definitions which were modelled with
variable
control points enabling adjustments throughout the design process.
The plan form
follows the curves defined in the
masterplan guidelines and is divided into 5m wide orthogonal bays.
The sectional
profile is a series of compound radii giving a smooth transition from
the roof
to the walls and providing the structure with sufficient curvature to
achieve
larger spans over the atrium areas of the roof shell.
The
elevational curve is set out to achieve maximum height over the centre
of the
building where the main circulation spaces and the entrances to the
building
are located. The ends of the building contain office areas and can be
accommodated in reduce in height. The profile of the roof curves
downwards
giving a dynamic profile to the skyline of the building.
The cladding
form is derived from programmatic and environmental influences.
The parametric
roof form computer model was refined to enable the roof bays to be
independently controlled in response to making openings, allowing
natural light
into the building and naturally ventilating the facade.
A computer
animation tool was used to morph the characteristics of the
openings in
order to provide smooth transitions between the overlapping roof
segments and
to keep within the parameters of the minimum radii possible to
construct with
simple metal profile roofing trays. This parametric morph model also
allows
considerable freedom and control to modify the geometry throughout the
design
process in response to structural, environmental and aesthetic
constraints.
images
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