Defence Establishment Berrimah New Swimming Pool Construction




Darwin, Northern Territory


$2.3 million


July 2018 to October 2018


Lump Sum Construct Only

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Project Overview

Defence Establishment Berrimah is located approximately 8km east of Darwin’s central business district. The 150ha property contains Defence accommodation for personnel stationed around Darwin and includes a fitness and health centre, medical facilities, recreation areas and a communication centre. A works area within the Establishment includes vehicle shelters, vehicle maintenance facilities, stores, a nursery and a wash-down bay.

Intract Australia was awarded the contract to construct the new swimming and associated building infrastructure project for Defence personnel living in the Defence Establishment Berrimah, both for fitness and recreation purposes.

Scope of Work

Project works were for the construction of a new swimming pool and upgrades to the attendant building adjacent to the existing gymnasium and basketball courts. The pool construction included the excavation of the pool’s footprint, as well as all other plumbing and drainage works. The pool was 11m by 16m with a maximum depth of 2.2m, which required over 280,000L of water to fill the completed pool.

Initial works included service locations and isolations, clear and grub excavations, demolition of existing steel structures, installation of new watermains and tie-ins into existing mains, installation of underground power conduits, and stormwater pipework and pits.


The upgrade works to the attendant building included formwork and steel fixing, pouring the concrete base, walls and slabs, and constructing blockworks. In addition, works to the existing gymnasium building included tilting and roofing installation, as well as a mechanical fit out, insulation and linings, joinery and benchtops, amenities, canopy and walkways on roof, and landscaping and fencing.

Testing and commissioning included mechanical, electrical and filtration system to ensure all installations were safe and met the design requirement.

Over 2,600m³ of earthworks, 400m³ of concrete, 100m² of roofing and 800m² of landscaping was undertaken across the works.

All trees within and adjacent to the construction site were protected and retained during the project works. An existing steel structure was recycled to minimise impacts on landfill. A key driver of the project was ensuring civil works were conducted outside the wet season, particularly excavation and backfilling works.

Local and Indigenous Participation

Project workforce peaked at six personnel achieving 3,000 work hours without incurring a single safety or environmental incident. Indigenous participation peaked at three personnel achieving a 46% Indigenous Participation rate. The vast majority of subcontractors and suppliers were sourced locally.

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