|Twin tower office building
|127 Fitzwilliam Street, Sydney, New South Wales, Australia
|New South Wales Government
|Floor Area Ratio of 25.6:1 (123000sqm GIFA vs 4800 sqm site)
X-TOWERS: A NEW PARRAMATTIC
In the modern city, skyscrapers have emerged as the triangulation of political
will, economic prosperity and technological progress. What intrigues us in the
proposition for twin towers for Parramatta is not the triumph of building high
but the potential to create a specific identity for the city. A landmark that can
embody the creativity of its citizens.
So what are the critical parameters WHAT_architecture assigns to the design of
a high rise office?
ECONOMY: Given the spatial requirements of gross internal floor area, two
twin rectilinear towers were massed as simple rectilinear vertical extrusions
clad in glass. In doing so we are adopting forms that are efficient in
maximising the ratio of net lettable to gross floor area and that minimize the
area of external envelope in relation to lettable floor. This also allows for
quickness in construction.
STRUCTURE: Above a certain height, tall buildings are influenced more by
wind loadings than gravity. So as to reduce sway, we recognised that the
structural height (vertical cantilever) of the towers could be reduced by staying
the towers into a X-formation/
PLACEMAKING: The space between the legs creates enhanced public realm –
an arch – which accentuates urban circulation and thus the building form
provides both openness and enclosure. Facets at the lower levels demarcate
the entry points.
LIGHT: The X-form however is hybridised with the insertion of a bridge which
provides for greater natural daylight penetration into the interior tower spaces.
Views and daylight are further enhanced by facetting the corners to the upper
Parramatta is at the centre of the fastest growing region in Australia and with
this proposal we have a unique singular yet twinned tower. X marks this spot.