Permanent and Temporary works design of the internal structure for the Shell House building forming part of the Wynyard Place development.
CBD Commercial Development.
- Heritage façade retention (Shell House and 285 George Street),
- Heritage clock tower retention (Shell House),
- Staged load transfers (Existing-Temporary; Temporary-Permanent (Shell House),
- Complex sequencing and close coordination with the contractor’s team at Multiplex.
Temporary Works key features:
- Transfer of 400t Heritage Clock tower from existing columns to the temporary support system and demolition of the existing support structure.
- Suspended 400t Heritage Clock tower, eccentrically supported over live demolition/construction site.
- External Façade retention trusses integrated with scaffolding and hoarding design.
- Central Stability core with integrated suspended crane base.
- Stability Core concrete encased steel plunge piles, de-cased and braced as excavation progresses for 12.5m below existing basement level
- Stability core stabilised utilising the mass of the offset clock tower through 2 levels of outrigger beams.
- Additional stability provided by thrust braces into the excavated sandstone face and integrated into permanent shoring walls and façade support columns.
Permanent Works key features:
- Offset new concrete stability core
- Permanent geotechnical loads resisted through basement diaphragm slabs
- Engagement/Disengagement sequencing from the temporary stability system
- New basement levels including substation and car parking
Integration with adjacent Wynyard Place Tower development car parking
- Crane to be relocated on top of new permanent core walls
- Composite steel new permanent slabs
Architect: Make Architects
Sector: Commercial, Retail
Services: Heritage, Construction Engineering, Structural