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Charter Hall’s WorkZone buildings in Green Star first

Charter Hall’s WorkZone buildings in Perth have become Western Australia’s first to be certified 5 Star Green Star Office As Built v3, with the developer calling the buildings Perth’s greenest yet.

The $220 million WorkZone comprises two A Grade seven-storey buildings totalling 28,000 square metres located on the edge of Perth’s CBD at 202 Pier Street. The buildings, built by Broad and with AECOM as ESD consultant, were designed to target five star NABERS ratings, but according to a Charter Hall spokeswoman are currently tracking at just above 5.5 stars.

WorkZone_Charter-Hall_PerthCharter Hall senior development manager Simon Hulett said developing a sustainable asset was a key focus from the outset of the project.

“The result is not only WA’s greenest and most sustainable office building, but also a highly efficient and inspiring workplace for our tenants that encourages collaboration and productivity,” he said.

Managing director of Broad Group Holdings Dean Goodliffe said working closely with Charter Hall was crucial to delivering on the sustainability goals.

“There are many aspects of a project’s lifecycle that need to be considered to achieve a 5 Star Green Star rating, and it is through rigorous pre-planning and positive interaction between contractor and client teams that we were able to achieve this significant benchmark,” he said.

Sustainability features

WorkZone features a BMS by Johnson Controls employing extensive utilities monitoring.

“This includes metered energy usage at distribution board level and at each variable speed drive, including all major equipment,” a Charter Hall spokeswoman said. “Water usage and gas usage are monitored at tenancy level and water is also monitored at each major usage point. The BMS provides a high level of interface to the chiller system and to the tenancy AV system to control local tenancy meeting rooms.”

There is a low energy, efficient active chilled beam airconditioning system, with natural ventilation also used.

“Natural ventilation is introduced into the building’s cooling sequence, which consists of finely tuned economy cycle, chilled beam, chiller and gas boiler sequencing. Natural ventilation is also available to the glass lift shaft to simulate an air curtain between the perimeter glass, the glass lift car and the internal building space when conditions require it.”

WorkZone-Internal-1_SmallerWater saving features include low water use fixtures throughout the building and an onsite grey water treatment plant that collects water from showers and hand basins to supply toilet flushing and irrigation. The greywater system is designed for 10,000 litres over 24 hours at full occupancy.

Energy efficient lighting is in the form of T5 lamps, with daylight harvesting and motion detection for after hours.

High performance facade glazing allows a high level of natural light penetration while a sun hood protects from glare and heat.

End-of-trip amenities including 188 secure bicycle racks, 23 showers and 228 lockers. The are 224 secure parking bays (one bay per 125 sq m). WorkZone is located within 200 metres of the train line and near a bike path.

There is no onsite renewable generation.

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