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The SummerGreen Star MURT Pilot

Project Background LandCorp Tender

– Development Guidelines– Sustainability Guidelines

Consortium led by Match– Offered best overall package– Committed to include sustainable initiatives

Design Team– Architect: Donaldson and Warn– ESD, Mechanical, Electrical: Lincolne Scott– Hydraulics: HDA Consultants– Structural: GHD– Quantity Surveyor: RBB

MATCH

“Match is a boutique development company, who’s aim is to build quality design based developments.”

Ottimo Home

Maymont

Donaldson and Warn

“Donaldson+Warn is a multidisciplinary contemporary design studio with extensive experience in architecture, urban design, master planning, interior architecture and public art. For over two decades the practice’s work has consistently featured in national and international publications and attracted numerous awards”

Palandri Winery

Christchurch Grammar

Lottery West – Tree Top Walk

The Site

Perth CBD

Fremantle

South Beach

~15

km

Rottnest Island

Cockburn Sound

Garden island

<2 km

Lot 232“The Summer”

The Local Area

Lot 232“The Summer”

The location

The Summer

Background (ESD) Original

– Agreement with LandCorp to be “Sustainable” – Sustainability Schedule Approved by LandCorp

Evolution– MURT Pilot ROI near start of project– Opportunity to extend commitment to ESD– Determined that Green Star could be achieved– Applied and accepted as a pilot project (1 of 7)– Project was assessed as part of the Green Building Council

of Australia’s (GBCA) Multi Unit Residential Tool Design (MURT)

– Only WA MURT Pilot Project to be assessed– First residential project to achieve a Green Star rating

LandCorp Schedule

Climate Responsiveness and Thermal Performance– Cross flow ventilation, High performance materials– “Additional” AccuRate Energy Rating (average 5 Stars with min

4stars) Energy Conservation and Efficiency

– Low energy lighting– Gas boosted solar hot water– Renewable energy (photovoltaic)

Water Efficiency and Conservation– Efficient fixtures– Install 3rd pipe (for future connection)

Materials Innovation and Construction Technology– Low VOC paints, carpets and adhesives– “Additional” HDPE plumbing in lieu of PVC

Accessibility– Lift access to car park, Universal access to units

Affordability– Diversity of sizes and range of units

Liveability– Climate control, Cross ventilation, High performance glazing

EnergyManagement

WaterIndoor Environment

QualityMaterials

Land use and EcologyTransport

Green StarClimate responsiveness and energy efficiency

Water Efficiency and ConservationLiveabilityMaterials Innovation and Construction

Technology

Sustainability Schedule

Comparison

Green Star vs Sust. Schedule Energy

– Increase in passive performance from 4 stars average (BCA) AccuRate to 7 stars AccuRate (insulation, cross ventilation, orientation)

Rainwater used for toilet flushing Transport initiatives

– Cycle storage facilities– Visitors cycling facilities– Reduced car parking

Waste Management – Recycled waste area

Metering – Additional electricity, gas and water metering

Lighting/equipment controls – increased Construction

– Env. Mgt Plan– Increased commissioning focus

Green Star Rating

4 Star 5 Star 6 Star

Green Star Targets – First Pass

Pilot vs “normal”

No technical manual, limited documentation of requirements

Untested criteria References to Office V3 technical manual (often

not applicable)

More assistance from GBCA

Project Context

Small/medium development with commensurate budget

36 apartments No site “property manager”- only body

corporate

Green Star Strategy– Build on areas already addressed in submission

• IEQ• Energy• Water

– Focus on areas with greatest environmental outcome fro expenditure

– Minimise any ongoing “burden” on occupants/owners

Management Commissioning has increased focus on handover

documentation Metering – changed from pilot to V1(2 points for

smart metering in pilot, plus 2 in energy plus 2 in water, all 6 in Man-16 in V1)

Issues for our project– Struggled to find an economical solution to “smart

metering”– Use of a BMS was not practical for the scale of the project– Had difficulty with commissioning requirements, building

tuning and commissioning agent role • Building is simple with simple service• No property manager for ongoing mgt • Strata Company with Multiple owners at practical

completion, not necessarily on site (could be investors with tenants)

Indoor Environment Quality

Private external spaces added

Issue for Project– Struggled with requirements to demonstrate design

achieved full noise credits

Ventilation Modeling

Daylight Modeling

Sample Daylight Models for Units 18 and 19

Energy Conditional Requirement – average 7 stars AccuRate

(different from V1 which now has 10% improvement over regulated requirement, which is 4 stars average in WA)

Max 15 points in pilot, now 20 in V1 Metering credits in pilot, now in Mgt in V1 Includes energy efficient appliances Peak Demand reduction criteria easier

Issues for our project– 7 star “hurdle” required changes to building fabric/insulation etc

(even though the building was already very efficient)– Metering requirements required dedicated electronic

metering/monitoring system or BMS to get full points– Need to provide appliances as part of base building to get credits

Passive Building Performance High Performance Thermal Materials for

construction Building Orientation Solar Shading Operable Louvres for air flow control by occupants Average 7 Stars AccuRate Rating

4 stars = 118 MJ/m2

7 stars = 52 MJ/m2

If all units living areas were air conditioned (option) saving ~ 30 tonnes GHG emissions per annum (~ 1 tonne per apartment)

Solar Hot Water

Gas boosted Solar hot water Storage tank and boosters on roof Solar panels will provide approx. 70% of the annual

hot water demand Will save approximately 100 tonnes CO2-e of GHG

p.a. Equivalent to permanently removing 30 medium

sized cars off the road

Transport

Parking criteria recognise “minimum requirement’ so credits' for not exceeding minimum allowances can be gained

Credits for being close to amenities Issues for our project

– Location dictated availability of credits– Small vehicle parking option not practical

Water

Reduced use of potable water credits Water efficient appliance credit Pools/spas credits

Issues for Project– Rainwater collection area limited to roof. (Still

sufficient to get 4/5 credits for reduced potable water consumption)

– Need to install washers as part of base building

Water Recycling

Rain water will be collected and reused for toilet flushing - utilising a 3rd Pipe

This will provide in excess of 30% (site restrictions limit the amount available) of the total potable water utilised for toilet flushing

The reuse of rainwater will save the equivalent of 6 domestic swimming pools (30kl) or a total of 177 kL per year.

Materials

Recycling waste area adapted to residential Universal Design (adaptability for disabled

access) is in this section Now more credit points available with V1 (cf

pilot)

Issues for Project– Costs were factor in not targeting many materials

points

Land Use and Ecology

Includes Outdoor Communal Facilities credits

Issues for Project– Scale of project limited ability to provide communal

facilities

Emissions

Issues for Project– Ongoing Mgt of on site recycled (black/grey) water

and scale of project did not make this viable– All stormwater retained on site (full credits for

watercourse pollution)

MURT – Summary of Issues Increased Costs vs Market Benefit

– Green Star design and administration– Construction

Ability to achieve required energy rating (conditional requirement)

Issue of final ownership (multiple owners) and control after settlement

Metering Use of BMS Green Star Process

– Applicability to the scale of the development– Applicability to Residential (vs Office)– Usual submission requirements

(precision,consistency, addressing all requirements…)

Final Result

Thank YouQuestions?

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