One Central Park | Sydney

Decorated with a number of awards and accolades, One Central Park pushes the boundaries of modern architecture and landscape design. This iconic building is made up of two residential towers set on top of a retail podium, all encased in an impressive vertical garden. The complex centres around an iconic heliostat, suspended by a central cantilever to reflect light to the park below.

In 2012, HydroPlan was challenged with designing an irrigation and fertigation system for the vertical gardens and surrounding parks and terraces of One Central Park – a landmark skyscraper for the Sydney skyline. Across a total of 30,000 square feet of landscapes, the irrigation and fertigation systems utilise recycled water from the buildings occupants, further extending the building’s sustainability credentials. As well as helping to blur the lines between building and landscape, the vertical gardens change with the seasons to allow maximum sunlight in winter, while shielding the building in summer.

In 2021, HydroPlan was invited back to audit the system as part of a larger review on the vertical gardens undertaken by Turf Design Studio. Including a desktop review of as-constructed drawings, assessment of control system data and an onsite inspection of the pump station, irrigation and fertigation systems, our audit identified areas system components that had lost performance due to age, as a result causing issues such as poor uniformity. Recommendations included the installation of an irrigation system alarm to detect issues before they effect plant health, and the use of an automated fertigation dosing system to target applications in line with the specific requirements of plants.

Principal Consultant Bjorn Baker, who undertook the audit, also developed irrigation maintenance plans for the building, taking into consideration the operation of the system as is, and should the recommended upgrades be actioned.

One Central Park’s east tower was ranked by Emporis as one of the world’s best skyscrapers in 2013, and the best tall building in Asia and Australia in 2014 by the Council for Tall Buildings and Urban Habitat. In the same year, the project was the Landscape Design winner of the Sydney Design Awards.