Remediation of Hobson Wharf

This historic wharf required significant work to strengthen and restore it to be fit for purpose. Located in the heart of Auckland's entertainment precinct, and the home of the Auckland Maritime Museum, communications and engagement with neighbouring stakeholders was an essential part of the smooth project delivery.


Project Name: Hobson Wharf Remediation (Design and Repair)

Project Overview: Wardale has been appointed as Project Manager for the remediation of the wharf during 2016 and 2017. The role includes procurement of the specialised contractor and day to day management of the project including regular PCG meetings, and contract management with the contractor.

Hobson wharf was build in 1928, and has had limited maintenance completed on the sub floor structure over the years.

A 2014 condition assessment found that a number of elements were needing reinstatement to bring them back to their full load capability.

The wharf is no longer used for freight, and has for many years been the home to the New Zealand Maritime Museum. A small percentage of the wharf is used by Panuku for access along the neighbouring wharf.

Project Sponsor: Auckland Council, The Maritime Museum of New Zealand – Managed by Panuku Development Auckland.

Project Capex: NZ $2.5 million

Project Consents: Consents for this project were not required as the repairs and maintenance works are a permitted activity within the Coastal Plan.

Although consents were not required the Coastal Plan provides upper limits on the noise that can be permitted within the zone. The type of methodology selected by the contractor to remove the existing decaying concrete includes the use of high pressure water blasting at over 20,000 psi, which required monitoring as the noise is close to breaching the upper limits permitted within the zone.

Project Timing: Project commenced in 2015 with early engagement with contractors. Works commenced post procurement in September 2016.

Works are suspended during the period 1 December 16 through to 30tth April 17, before commencing again on the 1st May. The project is expected to be finished by 1 December 2017.

Procurement Consultants: The project management has included the procurement of a select number of advisors to the project including Beca who were selected to advise the project on historical methods for remediating concrete wharves.

Project Governance: A full Project Control Group was established including staff from the Maritime Museum, Hobson Wharf Marina, Viaduct Marina and project reporting staff from within Panuku.

Procurement Contractors: The contractor was selected after a two stage process. A design and build solution was selected to allow the contractors to specify their methodology, materials (mix), and their programme of works to satisfy the decision to suspend works during the busy summer period within the viaduct harbour area.

Project Background: Hobson wharf was build in 1928, and has had limited maintenance completed on the sub floor structure over the years.

A 2014 condition assessment found that a number of elements were needing reinstatement to bring them back to their full load capability.

The wharf is no longer used for freight, and has for many years been the home to the New Zealand Maritime Museum. A small percentage of the wharf is used by Panuku for access along the neighbouring wharf.

This wharf remediation project required a significant amount of engagement with the neighbouring businesses. The remediation of this wharf will be the first completed in central Auckland where the wharf will continue to be tenanted above the works that are underway.

The nature of the remediation works include the use of high pressure water blasting to break away the existing concrete within elements that require rebuilding. Over 80 decibels of noise from the waterblasting wand can be heard at the neighbouring businesses on the adjoin wharf.

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