The Wynyard Place project represents one of the most significant commercial redevelopments in the heart of Sydney’s Central Business District. The development comprises of; restoration and integration of two heritage-listed office buildings: Shell House and 285 George Street. A new premium office building at 10 Carrington Street and a 27-storey commercial tower at 1 Carrington Street.
In total, the redevelopment delivers approximately 68,000 square metres of commercial office space and 7,000 square metres of retail space, revitalising a key precinct above Sydney’s Wynyard Station.
Witt Consulting was engaged to provide specialist investigative and surveying services to support the redevelopment across multiple facets of the project. Their scope of work included:
Structural & Material Investigations – Detailed inspections of exposed structural connections across 285 George Street Building, Shell House Building, Hunter Connection Tunnel, Wynyard Station Interface Zone
Geotechnical & Structural Testing
- Test pits to expose and assess subsurface conditions
- Concrete core sampling to evaluate material integrity
- Concrete cover meter scans for reinforcement cover depth verification
- Yield strength testing to determine existing structural capacity
Geometric Surveying
- Precision surveys of structural steel beams to assess alignment and condition
- Measurement of floor slab thickness for load-bearing assessments
- Mapping of concrete encased beams and detailed documentation of slab and beam penetrations
Witt Consulting’s investigations provided critical insights into the existing structural conditions and material performance of the heritage and interface structures. This information was instrumental in informing design, construction methodologies, and integration strategies for the new and restored buildings.
The redevelopment of Wynyard Place stands as a landmark example of how modern commercial space can be successfully integrated with heritage structures and urban infrastructure – with Witt Consulting playing a key role in ensuring structural integrity and construction feasibility.
