Coles Hallam becomes Australia’s first Green Star Rated Supermarket

Citygreen - Coles Hallam becomes Australia’s first Green Star Rated Supermarket

Coles Hallam becomes Australia’s first Green Star Rated Supermarket:

Coles has achieved the first Green Star rating for a supermarket, awarded by The Green Building Council of Australia (GBCA). Coles in Hallam (situated in outer-south-east Melbourne) achieved the 4 Star Green Star rating. Designed by Michael Carr Architect, key achievements at the Hallam store include:

  • 50% more fresh air compared to minimum standards through high-performance heating, ventilation, and air conditioning 
  • 15% reduction in greenhouse gas emissions with highly-efficient chillers and heat reclaimed from refrigeration cases used to supply heating in other parts of the supermarket 
  • LED lighting to reduce energy consumption and internal heating loads 
  • 70% reduction in water consumption compared to traditional supermarkets with water-efficient fixtures and fittings, and 150,000-litre capacity water tanks 

Coles Hallam is also the first supermarket to undergo a, “Life Cycle Assessment, allowing Coles to make comparisons between different materials and products to select healthy, efficient and sustainable options.”

The GBCA’s Chief Executive Officer, Romilly Madew, said, “Coles, in their determination to develop a supermarket of the future, has set a new benchmark for sustainable supermarket design in Australia. Coles now has a framework for sustainable supermarkets that are not only more efficient and cost effective to run, but are also more comfortable places in which to work and shop.”

Madew added that the GBCA has compelling international researching confirming that, “…green retail buildings featuring good natural light and ventilation, high-performance heating and cooling systems, and materials low in harmful chemicals, are not only more efficient and cheaper to operate, but can also improve the experience for customers and return on investment for owners.”

Advanced Tree Pit Design Enhances Urban Forestry

Citygreen - Advanced Tree Pit Design Enhances Urban Forestry

With increasing urbanization, and more highly concentrated populations within cities, strengthening the green infrastructure is becoming increasingly important. One of the largest opportunities for impact is maintaining and enhancing the urban canopy. This is addressed most readily by advanced tree pit design, which refers to the subterranean structures put in place during planting.

In Minneapolis, the local government conducted research that revealed well-planted trees provide a strong financial incentive in addition to the ecosystem benefits. The research found a $2 million savings between a storm water conveyance system, or subterranean cell systems.

Peter MacDonagh, a landscape architect, said in an ASLA interview, “larger, older trees are far more valuable than younger ones, so work needs to be done to preserve these and use new techniques to enable younger trees to stay in place longer.”

As trees were planted in the past, the soil they were placed in was compacted, causing a lack of nutrients, storm water management, and root establishment. As a result, the trees struggle to thrive and provide their benefits to the local environment and infrastructure. Often, these struggling trees will either die, stop growing, or begin to push through and ruin sidewalks and roads.

The Center for Urban Forest Research calculates that large-canopy trees …outperform small trees…and they do not start adding significant environmental performance until they reach 30 feet,” states Matthew Gordy, a landscape and urban design professional.

By utilizing cell systems, the strain put on the trees’ growth is almost completely eliminated, resulting in lower costs, and increased shade, stormwater management, and overall well being of the populaces and local infrastructure.

Get more information on advanced soil cell systems here.

The Future of Urban Water

Citygreen - The Future of Urban Water

The Future of Urban Water:

What would the state of urban water be in the next couple of years?

Well, the report The Future of Urban Water: Scenarios for Urban Water Utilities in 2040 by ARUP explores trends and future scenarios for the future of urban water utilities in 2040. It is the result of a jointly funded collaboration between Arup and Sydney Water.

“The programme has helped us gain a better understanding of possible pathways into the future, including implications for future infrastructure, governance and customer experiences.”

It depicts four plausible scenarios for the future of urban water utilities in 2040, using Sydney as a reference city. The report explores how a wide range of social, technological, economic, environmental and political trends could shape the urban water future.

The World Economic Forum’s Global Risks 2014 report said water crises is one of the top five global risks posing the highest concern. “Despite this, water issues are often overlooked or misunderstood, and there is a need for better awareness of their social, economic and environmental impacts.”

The Arup report said aside from the increasing water scarcity and pollution, rapid population growth and urbanisation are “major factors posing fundamental challenges to the global water cycle, with a particular pressure on the urban water supply”.

Australia utilises over 50 percent of its water consumption for agricultural purposes. The rest is for household, industrial and commercial use. But in urban areas, “the main driver for demand remains the population, and thus population growth”.

One of the key drivers for water conservation is smart infrastructure. It responds intelligently to changes in its environment to improve performance. “It is estimated that the market size for smart grid technologies will almost triple by 2030. Smart water networks could save the industry US$12.5 billion a year.”

Another is the change to a more digital lifestyle where people will be able to monitor the consumption and cost of water in real time. “More awareness of the issues could lead to increased scrutiny of water utilities and pricing of services. The availability of data provides an opportunity to educate customers about consumption and managing resource use.”

The report also mentioned new solutions for water supply such as the extensive use of desalination. About 96 percent of the earth’s total water supply is found in oceans. “Worldwide, desalination plants are producing over 32 million cubic metres of fresh water per day. However, energy costs are currently the principal barrier to its greater use.”

Finally, the report also said green infrastructure is part of the plan. “Benefits of increased green infrastructure include the reduction of flood risk, improved health and wellbeing as well as providing a habitat for wildlife. Extensive green networks can be formed over time to create an encompassing city ecosystem that can support the sustainable movement of people, rebuild biodiversity and provide substantial climate change adaptation.”

For more of the report, you can check this out.

Citygreen - Urban Forestry eBook

Benefits of Green Roofs, Walls and Facades

Benefits of Green Roofs, Walls and Facades

Image from Fytogreen. This is Fytogreen’s vertical garden project in 1 Blight St, Sydney.

Winter is coming to Australia and with the cold weather comes heating costs. However, heating costs may soon be a thing of the past with an alternative greener concept.

Victoria’s Growing Green Guide, a project by The University of Melbourne, The Inner Melbourne Action Plan and several industry experts, is pushing for green roofs as a more cost-effective alternative to answer heating needs.

The guide provides technical advice on how to design, build and manage green roofs, walls and facades so they can provide multiple benefits over a long period of time.

According to the guide, green roofs, walls and facades provide several benefits to the community and its residents. Here are some excerpts from the report:

  • Building owners and developers are increasingly installing green roofs, walls or facades to add a point of difference, increase commercial returns, provide visual appeal and turn a building into a local landmark. It increases property value as well as other benefits for building owners. Green roofs can lengthen the lifespan of a traditional roof surface. They protect a roof’s waterproof membrane from solar radiation and add insulating materials to reduce severe temperature fluctuations on the roof surface. The report says early design discussions will help ensure that the roof, wall, or façade can be planned and incorporated in other building aspects such as drainage, irrigation, lighting and weight loading.
  • Green roofs absorb and retain rainwater and can be used to manage stormwater run-off in urban environments. They can also filter particulates and pollutants. Stormwater run-off can be reduced or slowed because it is stored in the substrate. Additional water storage capacity in green roof systems can be provided through incorporation of a water retentive layer or drainage layer at the base of the green roof.
  • It reduces building heating and cooling requirements. Green walls and facades can reduce heat gain in summer by directly shading the building surface. Green roofs reduce heat transfer through the roof and ambient temperatures on the roof surface, improving the performance of heating, ventilation and air conditioning (HVAC) systems.
  • Green walls, roofs and facades reduce the urban heat island effect. Temperatures can be reduced by covering a roof or wall with a layer of vegetation that shades building materials, which would otherwise absorb heat. Evapotranspiration provides cooling effects, as water is evaporated from the soil and plants transpire by taking water in through roots and releasing it through leaves. The report suggests a city-wide strategy to implement green roofs, walls and facades to help mitigate some of the negative consequences of the UHI effect.
  • Green roofs can contribute to and enhance biodiversity by providing new urban habitats and specific habitats for rare or important species of plants or animals. It can also provide a link or corridor across urban ecological deserts and assist in migration of invertebrates and birds.
  • These green infrastructures can increase amenity and provide opportunities for food production, recreation, relaxation or commercial ventures. Green roofs, walls and facades can be used for multi-level greenery designs that connect with ground level green spaces.
  • Finally, they also contribute to the removal of gaseous pollutants from the air. Plants with a high foliage density or with textured leaf surfaces that trap small particles also assist in removing particulate pollution, through dry deposition on the foliage or through rain wash.

The good news is that most building surfaces have the potential for greening. It’s just a matter of knowing how to do it properly to get the most benefits out of it. A copy of the guide is free to view for those interested.

Biomimicry: Learning From Nature

Biomimicry- Learning From Nature

 

Image credit HOK

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A Water Sensitive Urban Environment

A Water Sensitive Urban Environment

A Water Sensitive Urban Environment:

Water Sensitive Urban Design (WSUD) is also known as Low Impact Development (LID) in the United States, and Sustainable Urban Drainage Systems (SUDS) in the United Kingdom.

It all refers to the land planning and engineering design approach that integrates the urban water cycle, including stormwater, groundwater, and wastewater management and water supply, into urban design. This is done to minimise the environmental degradation as well as improve the look of the area.

Why use WSUD? According to the guidelines released by the South Eastern Councils in Melbourne Victoria, WSUD has been identified as a “means to control flows and filter stormwater to remove pollutants”.

Stormwater is the water that runs off urban surfaces after heavy rainfall. The report said it has been identified as the key cause of pollution and declining health of waterways.

“With increased urban development, the proportion of impervious surfaces in our catchments increases. This increases the velocity and amount of water running into our waterways, creating problems of erosion and flooding and changing natural flow regimes, with associated ecological damage. It also washes more pollutants into our streams, further impacting river health.”

Victoria councils, like other councils in Australia, have recognised the importance of sustainable water management such as WSUD. The release of various guidelines enables organisations to have a first point of reference for their projects.

The design “integrates urban water cycle management with urban planning and design, with the aim of mimicking natural systems to minimise negative impacts on the natural water cycle and receiving waterways and bays”.

Some of the key principles of WSUD as stated in the Urban Stormwater: Best Practice Environmental Management Guidelines (BPEMG) include:

  • Protect and enhance natural water systems within urban environments.
  • Integrate stormwater treatment into the landscape, maximizing the visual and recreational amenity of developments.
  • Improve the quality of water draining from urban developments into receiving environments.
  • Reduce runoff and peak flows from urban developments by increasing local detention times and minimising impervious areas.
  • Minimise drainage infrastructure costs of development due to reduced runoff and peak flows.

Australian states started to release WSUD guidelines based on the federal government’s foundational research in the 1990s. Western Australia first released theirs in 1994 followed by other states like Victoria, New South Wales, Queensland and so on.

The Citygreen® products are designed to ensure it supports the effort for a sustainable water management. The Stratavell’s™ octagonal modules leave over 94 percent of its total volume for root growth and storm water harvesting. Find out more about the products here.

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