Exallos Specialist Engineering
Structural components can account for up to 35% of the overall construction costs. Our Exallos Specialist Engineering Division thoroughly analyses a project to identify better alternatives that reduce costs and improve buildability. Our reviews consider temporary works planning and design, materials selection, traditional and non-traditional formwork systems, precast options, craneage and staged delivery.
The Group developed the unique range of services that Exallos provides in response to demand from world class developers requiring services which encompass more than the traditional engineering offerings:
- Temporary works planning and design
- Construction Methodology Development
- Equipment Selection, Installation and Design
- Dilapidation and Building Condition Assessment
- Forensic and diagnostic services
- Site planning/ operational analysis
Exallos's services are becoming widely accepted by the marketplace as the benchmark for the industry.
The Exallos Division provides services in the following areas:
Construction Methodology –
Equipment -
Infrastructure
Mining and Resources -
Property
Construction Methodology
Melbourne Cricket Grounds
The MCG stadium recently underwent an AUD $500 million redevelopment of its Northern side in time for the hosting of the 2006 Commonwealth Games. Exallos developed the methodology for the erection of the seating bowl and roof steelwork and designed the lifting details, temporary bracing and access walkways. The temporary works design included a detailed wind load analysis and provided for the staged handover of the works to the client for spectacular occupation.
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Mackay Ship Loader
The project involved the erection of the 360 tonne, 47m high ship loader in the on shore assembly yard and its subsequent transportation onto the existing wharf. The Exallos Division developed an erection methodology together with detailed information for the lifting of various sub-assemblies and a methodology for transporting the completely assembled ship loader on jinkers to the wharf.
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Walsh Bay Wharves 6 & 7 Apartments
This apartment project in one of Sydney’s prime locations consisted of a 200 metre long four storey concrete framed structure with a concrete basement. The basement structure which is to home a 100 year service life is located between the low and high tide levels of Sydney Harbour, thus being effectively submerged for most of the time. Robert Bird Group were engaged to provide an economic design for this high performance basement. A method was developed to construct the basement sequentially in eight sections above the high water line and then lower each section into its final position. All eight sections were then stitched together to form the completed basement.
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Equipment
Pitt & Bathurst Street Crane
As part of the 25 metre deep site excavation contract for the multi-storey tower in the centre of Sydney’s CBD, a Favco 350 HT tower crane was installed on the face of the vertical sandstone excavation and supported on fabricated structural steel needles. The needle beams were anchored and grouted to the rock. A braced steel grillage was installed on top of the needles to support a tower crane. Design overturning moments acting on the base grillage and needles were resisted by securing the crane to the rock face with a crane tie.
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Queen Victoria Village
This $600 million redevelopment of the 1.8ha Queen Victoria Hospital site comprised 2 apartment buildings, 2 low-rise commercial buildings, retail space and parking for approximately 1500 cars. The Exallos division provided construction engineering services for this massive project which included 12 tower cranes, 6 personnel and materials hoists, 3 climbing concrete placing boom installations.
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Infrastructure
Jindabyne Dam
Jindabyne Dam, one of the series of dams that forms part of Australia’s famous Snowy Mountains Hydro Electric Scheme had a new 3.6 metre diameter tunnel added in 2005. Exallos was responsible for the design of the timber formwork for the concrete lining at the tunnel bend. The decision to use timber formwork for the single bend in the tunnel enabled quick and easy stripping. Particular care was required in controlling the rate of placement of the concrete to maintain formwork stability and to ensure that it was not overstressed.
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Garden Island Hammerhead Crane
This project involved a condition study of the 250 tonne hammerhead crane constructed between 1944 and 1951. Exallos were appointed to establish the structural, mechanical and electrical condition and to investigate the option and costs of fully refurbishing, demolishing or decommissioning and conserving the crane. A number of options ranging from restoring the crane to its full working load capacity through to full conservation as a non functioning crane as well as its demolition and associated budget costs were presented to the client.
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Northshore Hamilton
The current port activities at the lower reaches of the Brisbane river are gradually being shifted to the new port facilities at the mouth of the Brisbane river. This has led to a significant brownfield site to become available in the Hamilton area of Brisbane just 8 kilometres from the city’s CBD. The Exallos division of the Robert Bird Group provided design services for the building structure, the underpinning and site retention works in addition to all design services associated with the tower crane, personnel/ material hoist, concrete placing boom and overhead protection gantry.
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Mining & Resources
Zinifex Stockpile Building
Robert Bird Group’s Exallos Specialist Engineering Division recently commenced a five year plan to complete major maintenance on this 250m long building. The building stores zinc and lead ores during their final drying stage prior to transport by sea. The ores are sulphides which create ‘Acid Rain’ which unfortunately precipitates within the building causing significant corrosion.
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Property
Luna Park
The heritage listed face at the entry to Sydney’s Luna Park had to be temporarily relocated to enable a Favco 1000E II tower crane to be erected in the park. The crane was required in order to dismantle a roller coaster that was to be relocated to the Dreamworld Theme Park, on Queensland’s Gold Coast. Robert Bird Group’s Exallos Engineers designed a frame to support the face during relocation and storage, as well as a static base installation for the crane supported on 4 mass concrete pad footings in order to facilitate removal of the roller coaster.
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Lexicon
Located in Brisbane’s central business district, the design and construction of this 23 storey mixed use, concrete framed building with its 4 levels of below ground basement carparking, presented a number of engineering challenges. The deep basement excavation required complex underpinning due to the presence of the high level footings of the adjoining building. The Exallos division of the Robert Bird Group provided design services for the building structure, the underpinning and site retention works as well as all design services associated with the tower crane, personnel/ material hoist, concrete placing boom and overhead protection gantry.
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