ANZ Centre, Auckland, New Zealand
Tetra Tech’s High Performance Buildings Group embarked on the redevelopment of the ANZ Centre located at 23–29 Albert Street in Auckland’s Central Business District.
- Size: 33,574 square meters (361,388 square feet)
- Construction Cost: NZD$75 million (USD$47.69 million)
- Client/Owner: Precinct Properties
- Architect: Warren and Mahoney
- Project Manager: RCP
- Completion Date: 2013
The redevelopment was fueled by ANZ’s desire to bring the early 1990s office development up to state-of-the-art building services. As part of this upgrade, the original systems were replaced with on-floor air-handling units that feature active chilled beams in a four pipe configuration comprising two supply and two return pipes for each unit with separate loops for cooling and heating. The system also features 100 percent outside air provisions, making the refurbishment a leading example of a commercial office space in Auckland. With many of the floors occupied, and over NZD$32 million (USD$20.35 million) of new investment in the building services, the building highlights were achieved through refurbishment by using energy-efficient design and state-of-the-art technology.
The refurbished multi-level building complex includes the following key areas:
- Basement car park levels one through six
- Ground-level plant rooms—new build
- Ground-level entrance pavilion and meeting suite facilities—new build
- Ground-level staged existing lobby refurbishment
- Low, mid- and high-rise lift services upgrade
- Low, mid- and high-rise tower office space—22 floors fully refurbished
- Roof-level plant room space
- New central mechanical and electrical plant at level six
Tetra Tech completed full design of mechanical, electrical, hydraulic, lift, fire, and acoustic base building services. Tetra Tech also provided fitout design to the anchor tenant, which continued through the integrated fitout construction phase. The refurbishment work needed to be carried out while the building remained occupied and fully functional.
The 22 anchor-tenant-occupied floors have been completely refurbished, with Tetra Tech responsible for the provision of new HVAC, lighting, power, hydraulic services, and fire protection systems. Heating and cooling to these floors is provided by a new on-floor plant, which includes air-handling units with heat recovery and chilled beams located in the ceiling. Additional generator capacity is provided in the basement to allow the anchor tenant to continue full operation during a power outage.
The work includes the replacement of the chilled water plant, which was rehoused from level 40 to a new basement-level plant room. This included two new centrifugal chillers complete with magnetic bearings.
Energy consumption since construction has been reduced by 30 percent, and power factor has improved to almost unity, achieving a significant cost saving and energy improvement for the owner and tenants.
The entrance lobby was completely refurbished with the addition of a new entrance pavilion, providing a meeting suite, circulation space, and cafe areas. The building's vertical transportation systems were given a major refurbishment and updated to a destination control system.
All aspects of the design were completed in accordance with ISO 9001.