Sustainability of housing in cities- Atul Rajmani Pathak

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Sustainability of housing in cities- Atul Rajmani Pathak

  1. 1. Atul PathakB.Arch First YearDepartment ofArchitectureBIT Mesra,PatnaCampus
  2. 2. Contents to be discussed:1.What is Housing? a)Types of Housing2. The term “SUSTAINABILITY” a)The postulates of “SUSTAINABILITY” b) Sustainability in Architecture c)Goals of Sustainable Housing d)Sustainable Architecture in houses: How can we achieve it?3.Housing as a Design Process a)Environment , Society and Economy Relation b)Knowledge Transfer During the Housing Process c)Feature demand : Housing Designers VERSUS Potential Purchasers4. Housing Demand: A Datasheet a)Urbanization & Population Growth b) Urbanization & Housing Demand-Supply Dynamics5. Sustainable Housing Methodologies a) Common Approaches b)Designing the elements of a typical house c)The assessment toolkit6.Contemporary Methods on Sustainable Housing a)Works of Charles Correa : Architectural expressions with dominance of natural climate controlmeasures b) E-House c)Green rating for housing d)Modern Sustainable Techniques
  3. 3. 1.What is Housing? Housing generally refers to the social problem of insuring that members of society have a home to live in, whether this is a house, or some other kind of dwelling, lodging, or shelter
  4. 4. 2.The term “SUSTAINABILITY”:a)The postulates of “SUSTAINABILITY”: Sustainable design recognizes the interdependence of the built and natural environments; It seeks to harness natural energy flows and biological processes Eliminate reliance on fossil fuels and toxic materials, and improve resources and efficiency. In the short run, the impact of these changes will reduce the environmental impact of our designs. In the long run, the goal is to create buildings that are not only not harmful but actually part of natural systems and restorative of those systems.“Sustainable design is concerned with the quality of our environment as a whole system”
  5. 5. b)Sustainability in Architecture: SUSTAINABLE MANKIND – LIVING & INTERACTING WITH OUR ARCHITECTURE ENVIRONMENT IN A WAY SO THE ART & SCIENCE OF THAT MANKIND & THE BUILDING ENVIRONMENT REMAIN (CREATIVE & TECHNICAL) HEALTHY & LONG SUSTAINING RESOURCES WASTE ENERGY
  6. 6. c)Goals of Sustainable Housing: • Waste nothing • Adapt to place • Use “free” resources • Optimize rather than maximize • Create a livable environment • Sustainable design is built to last longer • The materials used can be re-used or recycled • More energy efficient, which in the long term saves on utility bills • Can benefit profit margins of builders
  7. 7. d)Sustainable Architecture in houses: How can we achieve it? -ENERGY EFFICIENCY: -SMALL IS GOOD -PASSIVE SOLAR DESIGN -ACTIVE SOLAR DESIGN -HIGH LEVELS OF INSULATION -EFFICIENT HEATING OF AIR & WATER -THERMAL MASS -VENTILATION -EFFICIENT LIGHTING -WASTE MANAGEMENT: -THROUGH DESIGNING IN MODULES -RECYCLING WHILE BUILDING -GREY WATER SYSTEMS -LOW FLOW TAPS & SHOWERS -BUILDING MATERIALS: -USE OF RENEWABLE, NON TOXIC MATERIALS -USE OF RECYCLABLE/RECYCLED MATERIALS -LOCALLY SOURCED TO REDUCE TRANSPORT WHY IS ENERGY EFFICIENCY AT THE TOP?
  8. 8. 3.Housing as a Design Process:: a)Environment,Society and Economy Relation: Sustainability: Human Well Being EnvironmentEconomy Society Architecture:Technical Response
  9. 9. b)Knowledge Transfer During the Housing Process: Knowledge Knowledge about about Constraints: Design Legislators Top-down Decision-making Strategy Restrictions & Solutions:Design is a Encouragements Risks &transformation between Possibilitiesareas of knowledgebearing on a particular Designersproject, aiming for Designconsensus of problem Knowledge s nel Csolving. t i Lawson B. R. Knowledge Gap about Occupants between ce D pu m tt o B Design Knowledge - o Problems: Transformation Needs & Requirements
  10. 10. c)Feature demand : Housing Designers VERSUS Potential Purchasers Users – General Public Designers - Professionals
  11. 11. 4.Housing Demands : A Datasheeta)Urbanization & PopulationGrowth
  12. 12. b)Urbanization & Housing Demand-Supply Dynamics: Supply shortfall since post- independence (1947) In 2005, estimated demand 209.5 million, supply 189.5 million
  13. 13. 5.Sustainable Housing Methodologies: a)Common Approaches: Vernacular approach to design (passive architecture, local materials, use of local labor): Low income/low cost housing and mass housing programme of the government; certain pockets in India (Kerala and Auroville) Adoption of Energy conservation building code in envelope design, labeled appliances for households; particularly applicable to middle and high income group housing Green rated housing : Energy and resource efficiency looked at holistically in addition to indoor environmental quality and societal issues
  14. 14. b)Designing the elements of a typical house
  15. 15. c)The assessment toolkit:
  16. 16. 6.Contemporary efforts on Sustainable Housing: a)Works of Charles Correa : Architectural expressions with dominance of natural climate controlmeasures Orientation and shading as per solar geometry
  17. 17. Design for daytime and night time use
  18. 18. b) E-House: Used local lumber Preserved mature trees Recycled demolition materials High-efficiency doors and windows Integrated central vacuum Insulated chimney systems High efficiency lighting-control systems Uses wind power Used local labor Accounted for daylight and natural ventilation in planning
  19. 19. c)Green rating for housing• GRIHA (Green Rating for Integrated Habitat Assessment)• LEED rating for homes• Eco housing programme in Pune (Western India)• Tool to facilitate design, construction, operation of a green building ,and in turn ….measure “greenness” of a building in India
  20. 20. Incentives for GRIHA Rated Green Buildings (governmentprojects only)• Reimbursement of rating-cum- registration fee for buildings with higher rating.• Incentives to architects/ design consultants• Capital subsidy for under Ministry’s scheme• Promotional activities (training, awareness generation, capacity building programme)• Incentives to Urban Local Bodies• First 200 Government buildings exempted from paying registration fees in advance. “What gets measured gets managed”
  21. 21. Key highlights of GRIHA • Sets out guidelines for design, construction and  Building types operation (new constructions) • Sets performances benchmarks for key  Commercial resources like, energy and water  Residential • Facilitates integration of traditional knowledge on architecture with present day technology  5 climatic zones  Hot – Dry • Integrates all relevant Indian codes and  Warm – standards (e.g NBC 2005, ECBC 2007, IS Humid codes)  Composite • Is in complete alignment with government  Temperate policies and programs (e.g Environmental  Cold clearance by the MoEF: GRIHA pre certification gets fast track EIA clearance)
  22. 22. d)Modern Sustainable Techniques: -ENERGY EFFICIENCY -HIGH LEVELS OF INSULATION -EFFICIENT HEATING OF AIR & WATER
  23. 23. -ENERGY EFFICIENCY -THERMAL MASS -EFFICIENT LIGHTING-WASTE MANAGEMENT -LOW FLOW TAPS & SHOWERS
  24. 24. -BUILDING MATERIALS -USE OF RENEWABLE, NON TOXICMATERIALS -USE OF RECYCLABLE/RECYCLEDMATERIALS -LOCALLY SOURCED TO REDUCETRANSPORT
  25. 25. 7.Conclusion:Henceforth, Sustainable eco-friendly construction is the practice of creating structures using resources that are environmentally responsible and energy- efficient.It encompasses factors such as internal and external design, construction, operation, maintenance, renovation, and deconstruction.Aim of this is to reduce the overall impact of the built environment on human health and the natural environment.
  26. 26. References: Bernstein, Phil. Design E2 Podcast. http://www.basicinitiative.org/programs/global_communities/katrina_furniture_project.htm http://www.e-house.us/ Palleroni, Sergio. Green For all. Design E2. Kontent Real. Pod Cast. Mendler, Sandra, William Odell, and Mary Ann Lazarus. The Guidebook to Sustainable Design, 2nd ed. Hoboken, New Jersey: John Wiley & Sons, Inc., 2006. McDonough, Michael. “Toward a sustainable nation.”http://www.pbs.org/designe2/e-house_final_.pdf Williamson, Terry, Anthony Radford and Helen Bennetts. Understanding Sustainable Architecture. London: Spon Press, 2003.• Blutstein, H. and Rodger, A.: Tall Buildings and Urban Habitat: Cities in the Third Millennium. 6th WCCTBUH, pp 131-142, London, 2001• Pitts, A,: Planning and Design Strategies for Sustainability: Pragmatic sustainable design on building and urban scales. Oxford: Architectural Press, 2004• Melet, Ed,: Sustainable Architecture: towards a diverse built environment. Rotterdam: NAI Publishers, 1999.• Roaf, S., Horsley, A. and Gupta, R.: Closing the Loop: Benchmarks for sustainable buildings. London: RIBA Enterprises Ltd., 2004• Taylor, B: Presentation in the conference: Design for 2050: East meets West. Nottingham University. 2005• Luzkendorf, T. and Lorenz, D.: Sustainable property investment: valuing sustainable buildings through property performance assessment. Building Res. & Inf., 33, pp 212-234, 2005• Chen, Bing, 2004. The Potential to Enact Zero Emissions Development in China. School of Architecture: M. Arch Studies Dissertation, University of Sheffield, 2004.• Layard, A., Davoudi, S. and Batty, S., ed.: Planning for a Sustainable Future. London: Spon Press, 2001.• Mendler, S. & Odell, W.: The HOK Guidebook to Sustainable Design. John Wiley & Sons, INC, 2000.• Lawson, B. R.: How Designers Think. Oxford: Architectural Press, 1997.• Pitts, A. and Chen, B.: The Potential for Zero Emissions/Energy Development in China. Proceeding: 22nd PLEA2005, Santorini, Greece, 2005.
  27. 27. DO YOU NEED TO BE AN ARCHITECT TO CONTRIBUTETOWARDS SUSTAINABLE ARCHITECTURE????HOW ABOUT…..-BUILDER-PRODUCT DEVELOPER-RESEARCHER, OR….-A TEACHER-A HOME OWNER-YOU! NOW! SUSTAINABILITY IS AN ATTITIUDE. IT IS A WAY YOU CAN CHOOSE TO LIVE YOUR LIFE. ---------------------------------------THANK YOU-----------------------------------

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