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Project Details

Head Contractor: Grocon

Structural Engineer: Connell Wagner

Architect: PTW Architects

Ultrafloor Footprint: 30,000m2

Address: Cnr Goulburn & Castlereagh St’s, Sydney

Construction Type: Office Tower




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Civic Tower, Sydney

On the corner of Castlereagh and Goulburn streets in the Sydney CBD, Grocon was the developer and builder of Sydney's Masonic Centre. The new tower is supported by a complex transfer structure comprising of massive inclined concrete filled fabricated steel tubes and post-tensioned concrete tie beams forming the base floor of the tower. The whole tower of some 1000m² floor plate is founded upon the existing Masonic lift core of only 200m².

The original concept for the tower floor plate design was for a posttensioned concrete slab­ and beam arrangement with an overall depth of 420mm to cater for the live load of 4kPa, plus an additional 1kPa for superimposed live load and a 10kPa live loading for ompactus zones. Involving NPCAA member Ultrafloor® in the planning stage, the engineering design team were able to bring about savings in construction time and floor zone thickness.

The programming challenge of the Civic Tower required a flooring system with a greater panning capability, but with the speed of erection associated with precast concrete. Read More >

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