Green roofs sungoo

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DT117/4 Sustainable Build & Design - Class Presentations

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Green roofs sungoo

  1. 1. Green Roofs<br />Sungwoo Hong<br />D07109970<br />Construction Mgmt & Tech<br />
  2. 2. Contents<br />1. Environmental Problems.<br />2. Definition of Green Roofs<br />3. Detail of Green Roofs<br />4. Green Roof benefits<br />5. <br />6. Case study (Apartment in Parnell St)<br />
  3. 3. Environmental Problems<br />
  4. 4. Air pollution<br />About 400,000 People die each year in Chinese cities due to air pollution.<br />
  5. 5. Flood - Storm water<br />Dr. Roger Pielke, Jr., who has done significant research concerning the determination of flooding related losses has an assessment of the damages between 100 and 150 billion dollar  (U.S.A)<br />
  6. 6. Energy Consumption - Waste<br />
  7. 7. Global warming<br />
  8. 8. Noise Pollution<br />Freedom of Information Act (FOI) request reveal in the period April 2008 - 2009UK councils received 315,838 complaints about noise pollution from private residences.<br />
  9. 9. Any solution?<br />
  10. 10. What is green roof?<br />
  11. 11. What are the Green roofs?<br />Roofs that are purposely fitted or with vegetation are known as green roofs or living roofs.(CIBSE Knowledge series) / which is simply green in the economic sense (GaryGrant)<br />The modern green roofs started from Germany in the 1970s and 1980s.<br />
  12. 12. Technical Detail of Green roofs<br />
  13. 13. Types of Green Roof<br />Three main types of Green Roof:<br />Extensive: extensive sedum or extensive biodiverse <br />Simple intensive (Semi-intensive): which can also be biodiverse<br />Intensive: <br />
  14. 14. Extensive Sedum<br />Depth of substrate: 20-100mm <br />Suitable flora: mosses, grasses, some flowering plants, etc<br />Maintenance requirement: Low<br />Relative cost: Low<br />Good effect on summer overheating/attenuation of <br />storm water moderate to good<br />
  15. 15. Extensive biodiverse<br />(rubble roof or brown roof)<br />Depth of substrate: less than 100mm <br />Suitable flora: self-seed, local plant<br />Maintenance requirement: Very low<br />Relative cost: Low<br />Slight effect on summer overheating / Negligible winter insulation / attenuation of <br />storm water good<br />
  16. 16. Simple intensive<br />Depth of substrate: 150-500mm <br />Suitable flora: grasses, typical flowering garden plants and shrubs<br />Maintenance requirement: require some maintenance<br />Relative cost: moderate<br />excellent effect on summer overheating / negligible on winter insulation / attenuation of <br />storm water good to excellent<br />
  17. 17. Intensive (Roof Garden)<br />Depth of substrate: 150-500mm <br />Suitable flora: all vegetation<br />Maintenance requirement: frequent<br />Relative cost: High<br />Excellent effect on summer overheating/attenuation of <br />storm water good to excellent<br />
  18. 18. How does it work?<br />Green Roof system absorbs many of the mineral in the polluted air into its soil as nutrition, thus reducing the smog<br />
  19. 19. How does it work? (Cont)<br />Green roof absorb the CO2 and produce O2 through the process of photosynthesis, thus cleaning the air we breath<br />
  20. 20. How it works? (Cont)<br />Green Roof system will hold approximately 70% of the rainwater from a 6cm downpour. The water is released gradually through evaporation and over flow.<br />This system protect the roof from the elements. Such a roof protection would usually cover the initial costs of the Green Roof installation.<br />
  21. 21. How does it work? (cont)<br />Green Roof insulation the building thus reducing writer energy costs.<br />Whilst there are conflicting views on the causes of global warming it is widely agreed that Green Roof create a cooler/cleaner environment.<br />
  22. 22. How does it work? (cont)<br />Green Roof have a natural cooling effect and can shield the building from the heat of the sun thus less energy for air conditioning needed.<br />The cooling effects of green roof improved the performance of solar panels.<br />
  23. 23. How does it work?(cont)<br />Green Roof absorb noise and prevent it from bouncing into adjacent buildings.<br />
  24. 24. How does it work? (cont)<br />Green Roof contribute to the quality life for residents.<br />It encourage wildlife to return t o the cities<br />
  25. 25. Case(Roof garden) – Ivy exchange in Parnell St<br />
  26. 26.
  27. 27. What is the next?<br />There are enough evidence and successful examples of real benefit of Green Roofs. <br />Architects, planners, engineer, developers, builders need to realise its potential power and need to use more widely.<br /> More research is required to quantify other more obvious benefits.<br />Legislation need to be changed to encourage people to use Green roof more.<br />
  28. 28. The future<br />Desinged by architects Emilio Ambasz & Associates and opened in 1993, the ACROS building complements and effectively extends the adjacent Tenjin Central Park<br />
  29. 29. The future<br />This is a Hundertwasser Building in Vienna, Austria, designed by FriedensreichHundertwasser.<br />
  30. 30. Reference<br />http://sciencepolicy.colorado.edu/prometheus/archives/disasters/000563part_ii_historical.htm<br />

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