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Sustainable housing

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Sustainable housing

  1. 1. SUSTAINABLE HOUSING BY- RAJAT NAINWAL
  2. 2. WHAT IS SUSTAINABLE HOUSING ? Sustainable houses are those that are designed, built and managed as: • Healthy, durable, safe and secure, • Affordable for the whole spectrum of incomes, • Using ecological low-energy and affordable building materials and technology • Connected to decent, safe and affordable energy, water, sanitation and recycling facilities, • Using energy and water most efficiently and water recycling capabilities, • Not polluting the environment and protected from external pollutions, • Well connected to jobs, shops, health- and child-care, education and other services,
  3. 3. CONCEPT BEHIND SUSTAINABLE HOUSING These are buildings that ensure that waste is minimized at every stage during the construction and operation of the building, resulting in low costs. The techniques associated with the ‘Sustainable Housing' include measures to prevent erosion of soil, rainwater harvesting, preparation of landscapes to reduce heat, reduction in usage of potable water, recycling of waste water and use of world class energy efficient practices.
  4. 4. WHY FOCUS ON HOUSING ?  Accounts for a major portion of total energy use (20%)  Heating (38%) is largest consumer in home  Easiest sector to target  A great deal (perhaps 50%) of energy is wasted  Most homes are not adequately built for energy efficiency & older homes are typically not efficient  High energy prices can create financial burdens for homeowners and renters
  5. 5. ADVANTAGES -Require less cleaning, painting & routine maintenance. - More easily negotiated & higher energy efficiency. It is true that almost all forms of sustainable housing require a substantial investment at the beginning. Solar panels, for example, are still quite expensive. On the other hand, it has to be said that the eventual results can also be quite good. The initial investment into solar panels, for example, will bring the electricity bills down.
  6. 6. Material efficiency Green buildings are built from green, rapidly renewable, non-toxic, reusable and recyclable materials as lumber, bamboo, straw, recycled metal/stone, sheep wool, compressed earth block, concrete, cork etc This is the first office building in which the earth that came out from the basement excavation has been used as compressed stabilized earth block in the masonry of the building, and in making its landscape garden slopes. For instance wood is used instead of aluminum for doors and windows and the use of burnt brick is minimized. No imported stones are used. This gives about 30 percent reduction in CO2 emissions compared to the kind of buildings that are generally prevalent today.
  7. 7. - Water efficiency Water consumption is another objective in sustainable building. Water can be wasted by drip irrigation, leaking (toilet leaking can waste up to 90 gallons per day), pool showers. Recycling rainwater and using it for toilet flushing can save waste-water. Water saving shower heads, ultra-low flush toilets and other conserving fixtures can minimize waste- water. - Maintenance Green buildings need less maintenance. For example most green buildings don’t require exterior painting so often. Also as far as natural sources were used during its construction, they are not destroyed so quickly. - To decrease dependence on fossil fuels.
  8. 8. CLIMATE RESPONSIVE HOUSING We are now experiencing climate change as up until now, our human society hasn't stopped to consider our effect upon the Environment.It is deal with anaylsis of climatic zone and bioclimatic needs, comfort level in bio- climatic chart, use of passive solar architecture like roof , wall , opening, heating, ventilation, cooling, humidification
  9. 9. USE OF ECO-FRIENDLY MATERIAL Materials with low embodied energy ,Materials that contain recycled, Local or rapidly renewable material, Non- toxic/Low Toxic Materials Implications, Reduce the release of GHGs, Safeguard health of occupants, Reduced impact on the external Environmental like fly ash brick, water based paint, organic flooring and tiles.
  10. 10. SOME SUSTAINABLE BUILDING MATERIALS - BAMBOO - COMPRESSED EARTH BLOCK - TIMBER - CORK (IN FLOORING) - NATURAL RUBBER - NATURAL FIBRE (COIR, JUTE,)
  11. 11. Some possibilities: - Glass & skylights - Mirrors - Curves - Wall-to-wall floor coverings - Multi-purpose, small scale furnishings
  12. 12. Interior-exterior connection - Roof overhangs - Porch & deck Smooth transition from exterior to interior - Glass doors - Lots of windows
  13. 13. SUSTAINABLE DESIGN
  14. 14.  Sustainable design is defined as design that meets the needs of the present without compromising the ability of future generations to meet their own needs.
  15. 15. FACTORS FOR SUSTAINABLE DESIGN  Location & linkages  Indoor environmental quality  Materials & resources  Energy & atmosphere  Innovation & design process
  16. 16. Holistic approach includes: - Solar Orientation - Day lighting - Ventilation Systems - Environmentally friendly components such as recycled materials - Energy efficiency - Bamboo floor
  17. 17. Components of a passive solar house:  Direct gain—sunshine enters south-facing windows; absorbed within living space; stored in mass within home.  Indirect gain—energy from sun collected at one place, such as a solar greenhouse.
  18. 18. ENERGY EFFICIENCY
  19. 19.  Many minor modifications can enhance energy efficiency - Compact Fluorescent Lights - Efficient ceiling fan
  20. 20. EARTH – SHELTERED HOUSING  Uses the earth as a barrier & as a moderator of temperature
  21. 21. GEODESIC DOMES - Uses 30% less surface area to enclose the same amount of volume as a box type structure—less area for heat to escape or outside air to penetrate - Spherical shape provides for natural and efficient interior air circulation
  22. 22. DISADVANTAGES OF SUSTAINABLE HOUSING • Air-cooling features Particular cooling components that control precisely the indoor te perature i gree uildi gs do ’t e ist. The only thing that influences it is natural ventilation, which cannot be regulated. • Lo atio To amend sun exposure green building may need a correct structural orientation. It influences how natural light enters the building, how to shade some part of it. As far as the building will contain recycled resources the location of the uildi g is affe ted the la d’s hu idit , the ir u sta e of the surrounding area.
  23. 23. • Availa ilit of aterials In urban areas materials can be found easily than in rural areas. Sustainable buildings require special materials. A lot of eco-friendly materials are not available everywhere, so sometimes these materials are hard to find and transportation fees may be high. • Ti e To build a sustainable building, in some cases takes more time than an ordinary one. Sometimes it takes too much time to find the needed material . The client can delay the construction. • Cost Many believe that the cost of green building is cost-prohibitive. One need to invest a lot of money initially, however later with energy saving possibilities, electricity bills might be reduced.
  24. 24. THANK YOU

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