Architect and Builder September/October 2015 | Page 25

Visitors are struck by
the central heart of the
scheme: a multi-storey
atrium covered with a
long span ETFE roof

comprises fabricated box girders tapered in
section cantilevering generally 12 metres with
the maximum cantilever being 13.5 metres. The
closed box form is further stabilised by a tubular
bracing network ensuring that, despite the large
cantilever, that the structure remains stable.
The back edge of the roof allows free flow of
wind under the roof to ensure wind uplift forces
are minimised. The soffit of this roof is clad in

Multichoice City

Brownbuilt 406 roof sheeting underslung from
a propped purlin system propped off the upper
Metsec purlins that support the Brownbuilt
KlipLok roof sheeting. The edges of the sheeting
are carefully trimmed and finished off with
fascia elements that ensure the roof remains
elegant and a dominant and imposing feature
as visitors or occupants approach the building
from the West.

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