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  1. 1. Sustainability Image courtesy of
  2. 2. Overview – Today’s lesson • What is sustainability? • Why? • Construction: What do we do? •Discussion Topics •Video: Google a new approach • Tile Manufacture: An Analysis •PowerPoint presentation
  3. 3. Sustainability: A Definition "meet present needs without compromising the ability of future generations to meet their needs“ (UN 1987)
  4. 4. Sustainability: Why? Sustainability is a long term approach to environmental protection and process improvements. Sustainable design prevents pollution from the start and calls for systems thinking, which acknowledges the connections between the economy, the environment and social responsibility. (, 2012) However the term is increasingly recognised in the context of the environment and how we can sustain ourselves on the planet.
  5. 5. Sustainability: Scottish Government The goal of sustainable development is to enable all people throughout the world to satisfy their basic needs and enjoy a better quality of life without compromising the quality of life of future generations Scottish Government 2012
  6. 6. The Environment How does the environment affect us? Our Health! •Air quality •Water contamination •Exposure to the Sun Question: Can you name any other effects changes in the environment may have on how we live?
  7. 7. The Environment: What we do Do we have an affect on the environment? Yes! of course we do but how? •Energy •Water •Transport •Rubbish
  8. 8. Environmental Impact What drives Environmental impact? Environmental impact is traditionally propelled by the population, affluence and technological advances. What does this mean? •Population •Affluence Technology
  9. 9. Measuring the Impact How is environmental impact measured? The most common measure of environmental impact is through CO2 emissions. What are CO2 emissions? Carbon dioxide is a greenhouse gas released from the burning of fossil fuels, mammal exhalation and by the decaying of most organic solid objects. It is believed to be responsible for global warming, which in turn is responsible for erosion of the ozone layer.
  10. 10. Generating Electricity
  11. 11. Discussion Generating electricity Nuclear Wind Solar Hydro Gas Oil What do you think? Is nuclear safe and sustainable?
  12. 12. Discussion Nuclear power is the most affordable large-scale low-carbon energy source currently available to the UK. A new generation of nuclear power stations could help the UK fulfil its commitments to tackling climate change and realise its vision of a secure, affordable electricity supply. The UK Government believes new nuclear power stations should form part of a low-carbon energy system. (EDF 2012)
  13. 13. Discussion Topic What areas of construction affect the environment? What has the industry done to address this? What can we do as individuals in the construction industry?
  14. 14. Discussion Topic Design This stage represents the first opportunity to maximise a sustainable sustainable building and construction benefits. This stage sets the direction for the future use/s of the building and should consider the effects on the local environment from construction through to the end life of the building.
  15. 15. Discussion Topic Building Materials The choice of building materials is important Many factors should be considered including the climate, material source and the existing environment.
  16. 16. Discussion Topic Why Build New? Reusing or refurbishing existing buildings will reduce the amount of waste going to landfill and could help preserve heritage and cultural artefacts.
  17. 17. Discussion Topic Refurbishment Refurbishment of a building can reduce operating and maintenance costs, reduce waste, increase building performance, extend the life of the building and can be more sustainable than demolishing the building and building a new structure. Refurbishment can be both partial (replacing windows) or total for example a whole building
  18. 18. Google Google in California takes Sustainability to a different
  19. 19. Wall and Floor Tiling: An Example Johnson Tiles: A British Tile Manufacturer based in Stoke on Trent, England The aim To uphold their longstanding commitment to environmental management They have had a formal environmental policy in place since 1992.
  20. 20. Wall and Floor Tiling: An Example The solutions A number of energy saving measures have been implemented throughout the plant such as: •speeding up kilns •changing CRT monitors to flat screens •switching from twice fired to once fired production •using automatic light sensors to low usage areas •re-using kiln exit heat. ©
  21. 21. Wall and Floor Tiling: An Example The solutions •Used pallets are utilised within the factory and for deliveries. •The company purchases second hand pallets and also repairs damaged pallets where possible. •Re-using 90% of the glaze and pigment transportation buckets that are used on site. •Each year Johnson Tiles recycle 20,000 tonnes of ceramic waste from their own production processes and those of 14 other local ceramic manufacturers who deliver ceramic waste from their own production plants for re-processing at the Stoke-on-Trent factory. ©
  22. 22. Wall and Floor Tiling: An Example The solutions •The ceramic waste is ground to a suitable size and added to standard ceramic materials to create tile bodies. These recycled materials comprise on average 25% of the raw material but can be as high as 36%. •92% of the content of the company's packaging is from recycled materials and all waste cardboard and plastic wrapping waste is baled on site and sent for recycling. •Reuses water in the company's body preparation area and has removed water from other parts of the production process. ©
  23. 23. Johnson Tiles: The Results •Energy saving measures have realised significant energy savings of 25% per tonne of ceramic tile produced which equates to 42 million kWh per year. •Recycling the 20,000 tonnes of ceramic waste annually diverts 24,000 cubic metres from landfill. •1,250 tonnes of virgin timber saved annually through the re-use of pallets on site •92% of the company's packaging is from recycled materials and all cardboard and plastic wrapping waste is sent for recycling ©
  24. 24. Johnson Tiles: The Results •In the company's body preparation area 30,000m3 of water is re-used each year. In addition, the company has also removed water from other parts of the production process which has realised additional savings of 2,100m3 of water. •Reusing 90% of the 10,000 plastic glaze buckets in their factory gives a saving of 5 tonnes of plastic per year. •In addition, it is estimated that 235,000 miles of HGV journeys per year using 133,750 litres of diesel (360 tonnes of CO2) are saved on the transportation of raw materials by using this recycled material. ©
  25. 25. Johnson Tiles: Learning points © Learning points •Johnson Tiles has recognised the financial and environmental benefits that can be gained through adopting a systematic approach to resource efficiency and is committed to continuously improving its performance going forward. •Huge savings can be made by reusing and recycling materials, equipment and water.
  26. 26. Construction Department City of Glasgow College 2013