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Carousel Pavilion Geelong Water Front
Steampacket Place, Quay
 Site: Designed to protect and showcase a restored and
operating 19th century steam carousel, complete with
steam engine and band organ, the steel and glass Carousel
Pavilion plays a cornerstone role in the revitalised
Geelong Waterfront.
Design: The
steel frame of the building comprises six umbrella forms
of 12 x 12 metres in a 3 x 2 array. The
steel structure is exposed and utilises a range of hollow
sections. The cross-linked main arms of the umbrellas
are fabricated box sections sculpted to reflect roof
loads with minimal use of material. The diagonal
arrangement of the mainframes and the combined arching
effect develops an inherently stiff structure
which eliminates the need for diagonal bracing in roof
or walls.
 The structure was refined using a 3D software package
for analysis, steel design and generation of bills of
quantities to compare the cost effectiveness of design
permutations. Close attention to connection detailing
was important as the structure was prefabricated and
fully bolted, contributing to aesthetics, integrity
of protection and cost control.
Environment: Sited on the sea wall and exposed to very high wind loading,
designers carried out a detailed analysis
using Australian Wind Code recommendations for strength
limit state conditions. Window mullions are
structural and stiffened with a horizontal truss which
forms the lower roof edge of the Pavilion.
Sea
spray and chloride deposition on the structure were judged
to require special attention for steel protection.
On careful assessment of the area, top grade after-fabrication
galvanizing to AS/NZS4680 (ISO
1461) was used on all structural steel.
Expanded
metal cladding on the cantilevered perimeter of the roof
had a cost benefit and provided the desired shading with minimum wind resistance.
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