Projects in this category include non-prestressed structures such as domes and shells made from more traditional materials like concrete.
Prestressed structures may include saddle shaped cablenets, planar wall or roof glass surfaces supported by a stressed cable network.
Externally supported roofs (cable supported) also come into this category.
Sydney Wildlife World
Entrant: UFS Australasia Pty Ltd
Client: Sydney Attractions Group
Architect: Misho & Associates/ RIHS Architects – Misho & Gerry Rihs
Structural Engineer: Fabric: Wade Consulting Joseph Dean,
Steel: S2 Corporation Murray Allen
Fabricator(s): Fabric Shelter Systems Graham Griffin
Category: 6 ID Number: 5111
Location: 253 Pacific Highway, Coffs Harbour, NSW
Client: Park Beach Plaza
Completion Date: February 2013
Architect: Red Dog Architects
Structural Engineer: DeGroot Benson
Specialists: Tensys Engineers - Structural Design
Builder: Edwards Constructions
Fabricator: Ronstan International, Locker Group
Installer: Ronstan International
APPLICATION OF PROJECT: Facade
Design, fabrication and installation of cable supported perforated aluminium façade on Park Beach Plaza Car Park at Coffs Harbour.
Other Structural Forms - Cablenets, Glazing, Facades, Spaceframes
The LSAA has groups of members interested in cablenets, high technology glazing and facades.
In fact one main reason for the creation of the LSAA from the MSAA was to cater for the growing number of projects which involved large glazed areas being supported by pretensioned cable truss systems or cablenets.
In modern times, when the overall energy usage for the life of a building is taken into account, the use of high technology facades will become more important. There is also a growing use of "green facades" or vertical gardens.
The traditional spaceframe structures are becoming rarer - those with many small elements that are man-handled and connected together on site. Labour costs and erection times are now outweighed by fewer larger assemblies that can be installed quickly by cranes.
The LSAA would welcome articles and links to projects in this category.
Pitt Street Lighting System
The City of Sydney turned to Ronstan to upgrade Pitt Street Mall's lighting to an energy-efficient catenary system as part of the overall redevelopment at the precinct. The result is a ladder-like series of lights supported by a Ronstan high-tension stainless steel cable framework.
The system illuminates the pedestrian areas below and the facades of the buildings, without needing large self-standing poles or heavy-looking supports. The 16m high tensile cable web is almost invisible, with bowstring support cables anchored every 20 meters into the facades of the buildings along the mall.
The catenary lights themselves comprise long tubes, combining downward illumination and a sequence of LEDs along the vertical length, which can be programmed for different colors depending on seasonal requirements – reflecting specific moods and occasions.
"The applications of tensile architecture are endless, thanks to its complex combination of engineering and design," says Rowan Murray, General Manager of Ronstan Tensile Architecture. "The Pitt Street Mall project is another example of this fact – and of the versatility, reliability and beauty of tensile forms."
The catenary lighting system at Pitt Street Mall comprises a twin longitudinal cable arrangement tied back to the surrounding buildings via spacers and guying cables. 23 customized tube style luminaires (lights) are suspended between 34 Marine Grade type 316 stainless steel ribbon catenary cables. The 1x19 strand cables are designed and manufactured to withstand up to 60 tonnes of tension, while resisting corrosion and stretch.
Pitt Street Mall reopened on December 6, 2012. In addition to Ronstan Tensile Architecture, the Sydney, Australia project team consisted of head contractor Westfield Construction, architect Tony Caro Architecture, cable and structural designers Enstruct Structural & Civil Engineers, building connections engineers Hyder Consulting and electrical contractors FIP Electrical.
- Client: City of Sydney
- Head Contractor: Westfield Construction
- Architects: Tony Caro Architects
- Cable Structural Design: Enstruct Structural & Civil Engineers
- Building Connections Engineering: Hyder Consulting
- Electrical Contractor: FIP Electrical
Entrant: Structural Dynamics Australia
Category: 4 ID Number: 4966
Location: Perth Zoo, WA
Client: Government of WA - Department of Finance
Completion Date: January 2012
Architect: Pritchard Francis
Structural Engineer: Pritchard Francis
Builder: The Slatter Group, WA
APPLICATION OF PROJECT: Zoological Enclosure
Structural Dynamics was contracted by The Slatter Group WA to assist with the design, material selection/supply and installation of a lightweight zoological enclosure that would cover an area of 90 meters long, 34 meters wide and 10 meters high.
The enclosure was covering two existing exhibits at the Perth Zoo, namely the penguin display and wetlands area, so needed to have minimal impact on the existing flora and infrastructure.
Pritchard Francis had already conducted the majority of the structural design and calculations of loads - Structural Dynamics assisted both The Slatter Group WA and Pritchard Francis with final material specifications to meet demanding requirements.
With such a large open enclosure that needed to be visually appealing for visitors as well as transparent for the exhibits inhabitants the challenge was to specify materials that met demanding load specifications but at the same time provided a light weight alternative that had minimal visual impact on the surrounding exhibits.
Monash University Building 76 Strip Facade Structures
Entrant: Oasis Tension Structures (Australia) Pty Ltd
Location: Wellington Road - Clayton Vic
Client: Monash University
Architect: DesignInc (Melbourne)
Struct. Eng.: John Mullin & Partners
Specialist: Tensys Engineering (Australia) Pty Ltd
Others: Ronstan International (Australia) Pty Ltd
Builder: Hooker Cockram Projects Ltd
Fabricator: Atkins Fabrication (Australia) Pty Ltd
50 Martin Place - Glass Roof
Taylor Thomson Whitting (Engineer)
Location: 50 Martin Place, Sydney. Completed: Unknown
Team: Johnson Pilton Walker, Taylor Thomson Whitting, Brookfield Multiplex, Sharvain Pacific Steel
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