RECO was appointed to assist in the upgrade of the Granard Road interchange by duplicating an existing Reinforced Earth wall. The angle of the existing wingwalls precluded the construction of a conventional Reinforced Earth wall because a significant amount of the existing road would have to be removed to allow space for the reinforcing strips. Partial demolition would have compromised the stability of the remaining wall and the road pavement above. RECO’s design team developed a hybrid wall design to merge the new wall into the existing one at an acute angle. The merge was done using specially designed brackets and dynabolts to allow for the anticipated differential settlement between new and existing walls. An extension to the existing wall rather than replacing it has significantly reduced the carbon footprint of this bridge duplication project.

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Application
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Bridge Abutment (Transport Infrastructure)
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Products
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TerraClass®
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Location
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Brisbane, QLD Australia
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Owner
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Main Roads QLD
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Consultant
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RECO design reviewed by Main Roads QLD
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Contractor
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Bielby Holdings Pty Ltd
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Construction Date
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September, 2005
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