Dusty Gedge

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As coberturas e fachadas mediterrânicas, vivas e produtivas promovem o bem estar e a qualidade de vida das populações e contribuem decisivamente para o aumento da resiliência das cidades. Por esta razão é essencial não apenas o conhecimento das soluções existentes que melhor se adaptam ao nosso clima, como ainda o desenvolvimento das competências técnicas essenciais para a boa implementação daquelas soluções. O enfoque deste Workshop está na demonstração da integração da dimensão verde nas cidades e das oportunidades de intervenção conducentes à melhoria do desempenho energético dos edifícios, à redução do “efeito ilha de calor”, à boa gestão das águas pluviais, à reciclagem de águas cinzentas, à melhoria da qualidade do ar, ao aumento da biodiversidade e à segurança alimentar das populações urbanas, sempre assentando nas melhores e mais adequadas tecnologias disponíveis.

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Dusty Gedge

  1. 1. Green roofs in the Urban realm THOUGHTS ON APPROACHES TO SUCCESSIVE GREEN ROOFS IN THE DRY AND ARIDThursday, 20 October 2011
  2. 2. President EFB Two recent members Greece and PolandThursday, 20 October 2011
  3. 3. Director Livingroofs.org Lead Consultant www.greenroofconsultancy.comThursday, 20 October 2011
  4. 4. Dry Hot D Cities Polluted Air Water Impervious LightThursday, 20 October 2011
  5. 5. www.livingroofs.org www.greenroofconsultancy.comThursday, 20 October 2011
  6. 6. www.livingroofs.org www.greenroofconsultancy.comThursday, 20 October 2011
  7. 7. 42 6Thursday, 20 October 2011
  8. 8. Climate Change - UK Increased summer temperatures - particularly in Cities Increased likelihood of intense summer storms - leading to flash floodsThursday, 20 October 2011
  9. 9. Late June 09 - Health Alert 2 Early July Intense Short rainstormsThursday, 20 October 2011
  10. 10. Urban Areas - the problem? Lack of soil and permability Lack of vegetation and evapotranspiration Lack of ecosystems services LThursday, 20 October 2011
  11. 11. Pollination Soil Fertility/Health/Stability Habitat Ecosystem Services Regulation of climate/floods Shade and Shelter Clean WaterThursday, 20 October 2011
  12. 12. Here is a Title A bullet point Another one And another oneThursday, 20 October 2011
  13. 13. Here is a Title A bullet point Another one And another oneThursday, 20 October 2011
  14. 14. Here is a Title A bullet point Another one And another oneThursday, 20 October 2011
  15. 15. Here is a Title A bullet point Another one And another one NATUREThursday, 20 October 2011
  16. 16. Here is a Title A bullet point Another one And another one NATUREThursday, 20 October 2011
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  26. 26. These are N. European approach to green roofs Key consideration is to drain excessive water as soon as possible What about the Mediterranean? Need to impede the flow of water and retain it on the roofThursday, 20 October 2011
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  29. 29. Even in Southern Europe a focus on the light weight approach Light weight will need heavy irrigation Even N. Europe the best green roofs are between 100 -150 mm Engineers and Architects will need to recognise that lightweight is not: Good or sustainableThursday, 20 October 2011
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  34. 34. Considerations for Lisbon/Portugal •plants - what plants to use •to irrigate or not to irrigate •How to store excessive rain for re use later •building regulationsThursday, 20 October 2011
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  36. 36. Drawn by: Kevin PerryThursday, 20 October 2011
  37. 37. Drawn by: Kevin PerryThursday, 20 October 2011
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  40. 40. Biodiversity Amenity Energy Water Text Green roof benefits Protection of Urban Agriculture waterproofing Noise and Air PollutionThursday, 20 October 2011
  41. 41. Energy and WaterThursday, 20 October 2011
  42. 42. Energy •Macro and the Micro •City Scale and Building Scale •Cities can be 5 degrees warmer than the country sideThursday, 20 October 2011
  43. 43. Energy and Water •Vegetated landscapes need water •Plants - ‘sweat’ - evapotranspirate •Evapotranspiration = coolingThursday, 20 October 2011
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  52. 52. Summer  Reduc*ons  with  Green  Roof 4.15Kwh/msq/yr Z16 25% Z15 9% 22% Z8 Z13 2% 9% Z7 Z12 1% 2% Z6 Z12 1% Z5 Z11 0% Z4 Z10 5% Z3 Z9 Z2 Z1 Winter  Reduc*ons  with  Green   RoofBetween  2  -­‐  6  Kwh/msq/yrThursday, 20 October 2011
  53. 53. Power and Plants Evapotranspiration maintains ambient temp. close to 25 degrees CThursday, 20 October 2011
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  55. 55. We can use air con and other equipement to shade and irrigate Mediterranean green roofs Better green roofs better performance of the equipementThursday, 20 October 2011
  56. 56. WaterThursday, 20 October 2011
  57. 57. Rainfall Harvesting Toilet reuse Irrigation Text Water Run off Volume + Rate of run off Stormwater AttenuationThursday, 20 October 2011
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  59. 59. Rainfall Harvesting § Can use water from roofs as grey water § Some commercial substrates have nutrients which leads to discolouration of water § Discoloration disappears after few years once vegetation established § If are going harvest ‘no’ nutrient substrate can be used § POTSDAMMER PLATZThursday, 20 October 2011
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  67. 67. Final Thoughts - Engineering Often too much emphasis on this area What retains water, provides shade from the sun and the wind Engineering should be FOCUSSED on what helps the vegetationThursday, 20 October 2011
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  69. 69. Final Thoughts - Vegetation Vegetation is KEY - what plants create dew/condensation What survives in the surrounding mountains and dry plains of PortugalThursday, 20 October 2011
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  74. 74. Obligado dusty@dustygedge.co.uk Text TextThursday, 20 October 2011

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