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Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
Dusty Gedges - EFB
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Dusty Gedges - EFB

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O enfoque deste Workshop está na demonstração das oportunidades de intervenção que resultam da actual conjuntura no âmbito da CERTIFICAÇÃO ENERGÉTICA E DA QUALIDADE DO AR EM EDIFÍCIOS, dando relevo ao …

O enfoque deste Workshop está na demonstração das oportunidades de intervenção que resultam da actual conjuntura no âmbito da CERTIFICAÇÃO ENERGÉTICA E DA QUALIDADE DO AR EM EDIFÍCIOS, dando relevo ao papel das COBERTURAS no desempenho energético-ambiental do edificado. O Workshop é dirigido a todos os decisores que influenciam a qualidade de construção do meio edificado.

O tema assume grande relevância, na medida em que as coberturas dos edifícios estão na origem de muitas patologias, que carecem de resolução urgente e, também, porque é nestes espaços que será possível integrar um conjunto importante das oportunidades associadas à sustentabilidade urbana – é o caso da utilização de energias renováveis, do aproveitamento da água da chuva e do contributo para a redução do efeito “Ilha de Calor Urbana”.

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  • 1. Future Cities - Cidades Futuras “Quando alguém cria uma cobertura verde numa casa, não precisa de temer que a casa se dissolva na paisagem.” Freidensreich Hundertwasser (1928-2000) – Artista plástico, arquitecto e filósofo austríaco
  • 2. Dusty Gedge Presidente da EFB
  • 3. Quente Seca CIDADE Poluída IMPERMEÁVEL Ar Água
  • 4. Here is a Title A bullet point Another one And another one NATURE
  • 5. www.livingroofs.org www.greenroofconsultancy.com
  • 6. www.livingroofs.org www.greenroofconsultancy.com
  • 7. 42 7
  • 8. Late June 09 - Health Alert 2 Early July Intense Short rainstorms
  • 9. Alterações Climáticas - UK Aumento da temperatura no Verão – em particular nas cidades Aumento da probabilidade de ocorrência de precipitações intensas – fenómenos de inundações repentinas
  • 10. Áreas urbanas - o problema? • Falta de solo e de permeabilidade • Falta da vegetação e de evapotranspiração • Falta de ecosystems services „...UK cities will need an increase of at least 10% green space by 2020 to combat climate change..University of Manchester 2005
  • 11. Manchester and Central London - No room for parks City of London No room for trees
  • 12. Polinização Habitat Ecosystem Services Regulação do clima / inundações Protecção e abrigo Agua potável
  • 13. Intensive green roof
  • 14. Intensive green roof
  • 15. Extensive Semi intensive Intensive Use Ecological Landscape Garden/Ecological Landscape Garden/Park Type of vegetation Moss-Herbs-Grasses Grass-Herbs-Shrubs Lawn/Perennials, Shrubs, Trees Benefit W, T, B W, T, B, A W, T, B, A Depth of substrate 60 - 200mm 120 - 250mm 150 - 400mm Weight 60 - 150 kg/m2 120 - 200 kg/m2 180 - 500 kg/m2 Cost Low Periodic High Input is the defining factor
  • 16. Extensive green roof
  • 17. Extensive green roof
  • 18. Extensive green roof
  • 19. Extensive green roof
  • 20. Extensive green roof
  • 21. Incêndio Manutenção Infiltrações Text Mitos e desafios Integração Estabilidade paisagística
  • 22. INCÊNDIO
  • 23. Waterproofing “Vor sprung durch technik” •Green roof element protects waterproofing •From UV, ponding, frost etc •Can double/triple life of waterproofing
  • 24. Maintenance
  • 25. • Intensive - depends on the vegetation - High Maintenance/Input • Extensive - low maintenance - biannual weed and clear out of outlets perimeters • Instant green - higher maintenance later • Slow greening - less maintenance long term www.livingroofs.org 27 www.greenroofconsultancy.com 37
  • 26. STRUCTURE Lightweight sedum mat 90kg/m2 Substrate based extensive green roof 120 -150 kg/m2 Paving/shingle 120 kg/m2 Semi intensive 200 -250 kg/m2 Intensive 300 kg/m2
  • 27. Aesthetics Extensive - adornment or ecology One of the main concerns during design process
  • 28. Energia e Água
  • 29. Energia • Macro and the Micro • City Scale and Building Scale • Cities can be 5 degrees warmer than the country side
  • 30. Energia e Água • Vegetated landscapes need water • Plants - „sweat‟ - evapotranspirate • Evapotranspiration = cooling
  • 31. CIDADES FRESCAS / CIDADES VERDES
  • 32. Energia e Água Roehr: 10 % de redução no uso de energia 14% de redução da escorrência superficial
  • 33. Paradise Park • Brown roof is approximately 150mm • Slows heat transfer by 6 hours • Between noon and 1800 no heat transfer • 28kW heat gain • 9.2kW per hour would normally be used • Needs no air conditioning • Saving 3,800kWhrs/year
  • 34. Summer Reductions 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 Reductions with Green RoofBetween 2 - 6 Kwh/msq/yr
  • 35. Power and Plants Evapotranspiration maintains ambient temp. close to 25 degrees C
  • 36. ÁGUA
  • 37. Rainfall Harvesting Toilet reuse Irrigation Water Run off Volume Rate of run off + Stormwater Attenuation
  • 38. Water Retention TYPE OF DEPTH [MM] VEGETATION WATER RETENTION GREEN ANNUAL AVERAGE % ROOF Extensive 20-40 MOSS/SEDUM 40 40-60 SEDUM/MOSS 45 60-100 SEDUM/MOSS/HERBS 50 100-150 SEDUM/HERBS/GRASS 55 150-200 GRASS/HERBS 60 Intensive 200 - 250 LAWNS/SHRUBS 60 250 - 500 LAWNS/SHRUBS 70 <500 LAWNS/SHRUBS/TREES <90
  • 39. Rainfall Attentuation Roofs are source -green roofs a source control mechanism In practice there is very little runoff for many rainfall events A lot of the water that falls on the roof is removed by evaporation and transpiration from plants Runoff volumes and rates are reduced In Germany green roofs are important part of zero discharge sites
  • 40. 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 PLATZ
  • 41. Drawn by: Kevin Perry
  • 42. Drawn by: Kevin Perry
  • 43. Nature
  • 44. Black redstart
  • 45. Rare pollinators need substrates as well as plants
  • 46. 98 91
  • 47. New London Plan • The Mayor will and the boroughs should expect all major developments to in corporate living roofs and walls, where feasible and reflect this in Local Development Framework policies. It is expected that this will include roof and wall • planting that delivers as many of these objectives as possible: • Accessible roof space • Adapting and mitigating for climate change • Sustainable urban drainage • Enhancing biodiversity • Improved appearance • Boroughs should also encourage the use of living roofs in smaller developments and extensions where the opportunity arises
  • 48. Area of green roofs = 326,682m2/3.5 million ft2 Hyde Park/Kensington gardens = 250,000m2 Up to 2004 = 76,682m2 /825,400ft2 2004 -2009 = 326,682m2/3 million ft2 Text Total greater than 500,000m2
  • 49. Existing roofs in the City 10 million m2 potentially could be greened There is more to do!
  • 50. OBRIGADO dusty@dustygedge.co.uk Text Text

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