Australia
Galvanized
rebar for world's largest sundial - constructed
in Singleton in country NSW as a gift to celebrate
Australia's bicentenary (1988). The
sundial measures 14.6m long and 7.92m high.
Built of 30 cubic metres of concrete reinforced
with 2.5km of steel galvanized for corrosion
protection.
Galvanizing in Critical Areas:
Galvanized steel reinforcement used extensively
in the construction of a railway tunnel for
the Glen Waverley railway line under the South
Eastern-
Mulgrave
arterial link in Melbourne (1985). Galvanizing
reinforcement used mainly for corrosion protection
in the base hinges where moisture is most
likely to penetrate the concrete. Two
rows of reinforcement or cross bars used on
one side of the tunnel and a single row on
the other, to allow for differential loadings.
Here the use of galvanizing as an "insurance
policy" against corrosion is particularly
important as maintenance access to the hinge
area will be impossible once the tunnel is
completed.
Australia 's Parliament House
on Capitol Hill Canberra - used galvanized
reinforcement to ensure a life of centuries
for the vast building. (1983)
Galvanized reinforcement for
the Sydney's Intercontinental Hotel used as
a safeguard against cracking and spalling
of concrete (1985) and Hyatt Regency Adelaide
(500 tonnes of galvanized reinforcement used).
Brisbane's Commonwealth Bank - 32 storey building.
The facade of the building is composed of
over 1700 precast concrete panels each weighing
between two and five tonnes - a white granite
aggregate in a white cement matrix, polished
to give the appearance of very pale grey natural
granite. 350 tonnes of galvanized reinforcement,
in the form of rod, mesh and fabricated cages,
were used in the manufacture of cladding panels.
Situated less than 9 kilometres from Moreton
Bay as the crow flies, central Brisbane's
tall buildings are subject to salt-bearing
coastal winds in addition to an urban environment.
It was important here that no unsightly rust
stains on the gleaming facade occurred.
