Auckland Airport - Pier B


Auckland International Airport had undergone a series of internal alterations and small building extensions to incrementally increase the processing capacity of the terminal over several years. However, this strategy was becoming less sustainable in view of the continued increase in demand at Auckland Airport and the constraints imposed by the configuration of the existing terminal.

With 15.3 million travellers expected to use the international terminal by 2025 (compared to 6.5m in 2008), Auckland Airport recognised that a substantial reconfiguration and increase in overall area of the international terminal was required to ensure the facility would continue to operate efficiently and effectively into the future.

The brand new Pier B building was built by Hawkins in response to capacity pressures and provides access to four new aircraft hard stands, two additional gate lounges and dual air bridge boarding of large aircraft - such as the new Airbus A380s. It is also able to service two A380s at the same time. It was designed and built with a simple structural grid, allowing for expansion in all directions, and with the ability to add plant and equipment into the building when expanded and, most importantly, to provide additional gates as required over time.

The building, including links to other parts of the main terminal building, covers roughly 5,500sqm and is 145m long, 18m wide. Approx. 1425 m3 of concrete went into the pier. The construction period for the building was set right at the beginning of the project despite much of the detail not being known. This is not unusual for airport projects due to the large number of diverse stakeholders, and it is something Hawkins has learnt to manage over the years. Some design changes were made, such as pre-casting in-ground tie beams to speed construction. Final details of some finishes and fittings were confirmed just 12 weeks from completion.

Early collaboration between the design team and Hawkins yielded cost savings at a time of surging world steel prices. Several kilometres of circular steel columns were indented in the correct lengths many months prior to the design drawings being finished, prior to steel price increases. Early collaboration with the steelwork fabricator also yielded savings in material handling and truck movements. This open team approach resulted in a streamlined fabrication and erection process. Despite the complex two-way moment frame system employed, of the approximately 380,000 bolts required not a single bolt or bolt hole required modification.

Pier B was a Leadership in Engineering and Environmental Design (LEED) project, which is a green building accreditation system, so new disciplines with regard to procurement and recording where materials were used within the building was essential to the Hawkins team.

This also included rubbish recycling with the separation of plastic, steel, cardboard, Gib-board, paper, and timber and crushing waste concrete and returning it as backfill during construction. Special features of LEED for the finished building include a solar hot water system, a rainwater recycling system and photovoltaic cells for generating electricity.

 


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