Category Achievements

Management

Green Star Accredited Professional engaged to provide sustainability advice throughout the design and delivery period

Comprehensive pre-commissioning, commissioning and quality monitoring were performed by relevant contractors and communicated to building owner.

Building tuning - commitment to 12 months commissioning building tuning (with quarterly reviews and a final recommissioning after 12 months of operation) after building handover

Independent commissioning agent appointed to provide commissioning advice to ensure optimal building performance

Comprehensive building users guide

Adoption of an environmental management plan during construction

Targeting 80% of construction waste diverted from landfill

Indoor Environment Quality

Ventilation rates - 50% increase on fresh air rates on AS 1668.2-1991

Air change effectiveness greater than 0.95 to enhance occupant comfort

Carbon dioxide monitoring and control

Daylight glare control - active louvres on the western facade to reduce light & heat ingress

High frequency ballasts installed in fluorescent luminaires over a minimum of 95% of the tenancy's Net Lettable Area to avoid low level flicker

Office lighting levels less than 400 lux over a minimum of 95% of the Net Lettable Area to reduce discomfort and strain for occupants

60% of Net Lettable Area has direct line of site through vision glazing

Thermal modelling to optimise comfort levels

Internal noise levels monitored for noise intrusion from outside and building services

95% of all painted surfaces use low-VOC paints. All carpets, adhesives and sealants are specified as low-VOC

Low formaldehyde emission from composite wood products

Dedicated tenant exhaust riser

Energy

Energy improvements - designed for a 5 star NABERS Energy + 20% CO2 reduction

Electrical sub-metering for base building and tenancy for energy monitoring

Chilled beam air conditioning system separated into perimeter and internal zones to maximise efficiency. The primary air handling plant is a floor by floor system (located in 2 plant rooms at each floor) which improves tenant control and after hours energy wastage across multiple tenancies

Lighting power density less than 2.0 watts per m2 per 100 lux

Lighting controlled by zoned timed switches and perimeter sensors. Motion sensors in common areas controlled by base building.

High efficiency chillers incorporating variable speed compressors.

Transport

Small car parking spaces provided

Secure bicycle storage, accessible showers and changing facilities with lockers provided for 10% of occupants

Close access to public transport networks which have frequent services

Water

Water efficient kitchen and bathroom fittings, waterless urinals and dual flush toilets (3/6L)

Grey water treatment plant for recycling shower and hand-basin water to be used in toilet flushing

Water sub-metering for effective monitoring and leak detection

Landscape irrigation via subsoil drip system and automatic timers with rainwater/soil moisture sensor control override

Cooling towers designed to achieve six or better cycles of concentration

All water used for testing of hydrant systems, and all drain down water from sprinkler systems is returned to the fire reserve tank or irrigation tank.

Materials

Appropriately sized recycling waste storage in base building

20% of all aggregate used is recycled aggregate; 20% of cement for in-situ concrete and 15% of cement for pre-cast concrete is replaced with industrial waste product

At least 90% percentage of all steel in the design contains a post-consumer recycled content greater than 50%.

The total PVC content cost for major services elements (pipes, conduits and cables) is reduced by at least 30% by replacing with alternative materials.

All timber and composite timber products used in the building and construction works are required to be sourced from either or a combination of post-consumer re-used timber or Forest Stewardship Council(FSC) certified timber

Land Use & Ecology

Reuse of land that was previously developed

Development has minimal environmental impact

Emissions

100% of heating ventilation and air conditioning refrigeration have an ozone depletion potential of zero

Refrigerant leak detection and recovery

Stormwater collection and distribution from this site designed in accordance with the Victorian EPA Best Practice Guidelines for Environmental Management for Urban Stormwater

Outflows to the sewerage system due to building occupants' usage have been reduced via grey water recycling and water efficient fixtures and fittings

All thermal insulation avoids the use of ozone-depleting substances in both its manufacture and composition

Innovation

Three 2.5kW wind turbines on the rooftop provide green energy to a proportion of the building. The wind turbines will be connected in parallel to the main grid and will help reduce the buildings demand for conventionally produced electricity.

Active chilled beams - This will be the first large scale development to use active chilled beams as the primary form of air conditioning in Perth. Active chilled beams offer a significant energy saving opportunity, with less air handling power required. Chilled beams also offer the potential for tight humidity control, with air supplied purely to control internal humidity. This improves internal comfort conditions and reduces the risk of mould growth within the occupied space.

The western facade for this building has been provided with automated louvers which respond to solar detection, ensuring no direct solar penetration into the space. This feature allows the building to maintain views and natural lighting, whilst eliminating the negatives of radiant temperature and glare