Eco community near Bangkok

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Eco- community near Bangkok

• Regional experts group meeting
• 21-23 march ,2005

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Objective

• Evolve design strategies for a peri urban site
  near to Bangkok with following goals
• Develop demonstration model of sustainable
  urbanization (reflecting not essentially low
  density development but of medium to high density
  solutions that could be solutions for future)
• Macro planning of habitat to ensure sustainable
  site planning and linkage with city.
• Ecofriendly models of housing, at micro level, to
  have minimum energy use( maybe generating surplus
  energy by appropriate choice of design strategies
  and energy generation choice) water conservation,
  re use, recycle, waste minimization/waste-energy
  options, choice of appropriate building
  materials.
• To be able to meet UNEP objectives of
  information sharing, knowledge building
• Replicable model with adaptability to other
  regions and context
• Mainstreaming

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Site
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Site

• Site 2170 acre
• Naturally sloping
• Latitude -13 north
• Wind (summer)-south/south-west
• Wind (winter) -north/north-east
• Temp(DBT)-average 31 c
• -winter 20c
• Soil - Sandy with SBC -10t/sq.m.
• Rain -May-October 1500mm/year ( 6 months per
  year)
• Thai population-200,000 persons
• Water table - 15 m.
• Transportation -no mass transportation
• -only personalized vehicle

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Sustainable site planning

• Logical inferences from study of site parameters
• Natural slope, run off patterns and storm water
  flows not to be disrupted
• Minimize footprint , minimize hard surface,
  retain pineapple plantation
• Check run-offs and if strategies would affect
  other sites
• Water harvesting at site level (look at options
  of recharge/storage- to study the percolation on
  site as it is sandy soil)
• Not connected to city sewer line decentralized
  options for waste treatment and reuse waste water
  for landscaping purposes
• Biodiversity and eco system analysis

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Sustainable energy planning at building level

• Sources-
• Sun
• Biomass
• Wind
• Take advantage of net metering and differential
  tariff to evolve energy generation on site
• Design strategies to reduce demand at building
  level by doing climatic design
• Use of efficient appliances (example of bio solar
  house)

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Water optimization

• Appropriate landscaping ( to avoid manicured
  landscapes, go for more native plantations,
  forested cover and under growths)
• Rain water harvesting
• Recycle ,re use back on site

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Building components/ materials

• Use of appropriate materials that meets
  requirements of local climate (hot and humid
  conditions)
• Light weight construction recommended if going
  for full ac buildings with provision of external
  insulation
• Modularisation of building components

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Alternative view points that need to be resolved

• High/medium density solution
• Pros future need given the mode of urbanization
• Cons- the site conditions and land value favor
  low density solution
• Low density solution
• Pros in line with site location and land value
• Cons- may not be desirable sustainable model that
  one wants to demonstrate

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Alternative view points that need to be resolved

• Passive/hybrid /Fully air conditioned houses
• Passive low energy houses have much lower eco
  foot print an should be promoted
• Air conditioned houses provide better comfort
  conditions round the year
• In Bangkok all houses are air conditioned

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Inferences

• Demonstrate mixed density housing
• Demonstrate passive for community facilities
• Different typologies

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Some generic points

• Demonstrate high medium and low density solutions
• Demonstrate passive, hybrid and low energy
  consuming air con buildings
• Study sustainable solutions in other regions (
  water recycling techniques in Singapore)
• Perform life cycle analysis of eco- benefits
• Eco system analysis of bio solar house could be a
  starting point
• Perform market study to understand habitability
  potential of eco houses and demand.
• Public private partnership to enable
  mainstreaming

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• To be better than the best
• - Forward looking and strive to achieve more

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Thank you