The New Hornsby Aquatic Centre - Part 2

By Rebecca Brennan
Thursday, 20 December, 2012

The New Hornsby Aquatic Centre - Part 2

The construction of the new aquatic centre at Hornsby, in Sydney's north west continues. In the second installment of this feature, Pool + Spa talks with Raymond Huzij, Project Manager of Major Buildings at Hornsby Shire Council and Robert Trisley, Managing Director of Trisley's Hydraulic Services.

The demolition of the old Hornsby Shire swimming pool is now complete and the team at ADCO Constructions, who have been contracted to build the new centre have started on the excavation of the site. The next step, to bench the site for the car-park level and to excavate for the foundations of the new centre, is well underway.

"The old pool was demolished quite easily given the amount of 'concrete cancer' in the structure. This gave additional justification for the pool being closed and demolished - it was definitely not structurally sound at the end. The pool was progressively demolished from the south to the north - there was nothing untoward," said Raymond Huzij, Project Manager, Major Buildings at Hornsby Shire Council.

"The excavation is somewhat problematic as we are finding the rock levels vary greatly across the site. On the western side the contractors have had to excavate deeper to achieve the bearing capacity of the rock to the structural engineers requirements."

A separate tender was called for the water filtration works for the project. Trisley's Hydraulic Services have been contracted by Hornsby Shire Council to provide this service.

Robert Trisley, Managing Director of Trisley's Hydraulic Services said, "We are presently developing 'for construction' drawings. All of the equipment to be used has been approved and most of the major items of plant have been ordered."

"The Centre will utilize state of the art Atlas UFF filtration systems. These filters were selected after extensive comparisons with other overseas built filters. Atlas filters proved to be of superior build quality, will provide excellent water quality, will provide the client with significant water savings in comparison to sand filtration systems and are supported in Australia by a network of service agents. Atlas filters are made in Australia to Australian conditions."

"Centrifugal pumps matched to the required filter flow rates have been selected. The pumps will be built to withstand the aggressive nature of chlorinated water to provide reliability and durability."

The Centre will operate an onsite Chlorine generator as well as using Ultra Violet sanitization for the Leisure Pool.

About Trisley's Hydraulic Services

Trisley's Hydraulic Services P/L (THS) are a specialised pool company dealing with all aspects of the commercial swimming pool industry, including the installation and servicing from the smallest Aquatic Centres, to total plant removal, rebuild and upgrading of the largest Aquatic Centres, in Australia.

A family owned and operated business with over 50 years' experience in the industry, Trisley's stand behind their products and services.

Currently they are working on pools right across NSW, QLD and WA as well as new facilities in Alice Springs. Trisley's have over 350 service clients across Australia. They have also consulted/worked on pools for 2 Olympics Games, 1 Commonwealth Games and 1 FINA World Championship, the Cairns Esplanade (largest lagoon pool in the southern hemisphere), the main resort pool on Hayman Island and the Darwin Waterfront Wave Pool, currently the biggest wave pool in Australia. For more information visit

ADCO Construction Pty Ltd 

ADCO Constructions is a leading Australian construction company operating along the eastern seaboard, with offices in Sydney, Brisbane, Melbourne, Gold Coast, Townsville, Cairns and Newcastle. Established in 1972, ADCO has grown to be one of Australia's top 100 private companies with revenues in excess of $500 million per annum and 350 direct employees.

Over 70% of ADCO's work is sourced from repeat business clients within the government and corporate sectors. Clients include Woolworths, Bunnings, AMP, Dexus, QIC, Uniting Church as well as State and Federal Government bodies. ADCO has the resources to service our Client's projects regardless of size or complexity. Our successful projects range in size from $1 million to $100 million.

ADCO's success has been built on the consistent delivery of high quality projects completed on time and on budget. For more information visit

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