Green home ppt 2 10_11


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Northwest Indiana Green Building Alliance

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  • Energy Guides introduced in 1978 and largely ignoredEnergy Star introduced in 1992
  • EPA calculates the amount of salvageable structural lumber disposed of annually 1 Billion board feet of structural lumber 3-5 pounds per square foot $250-$1000 plus disposal cost 62,000 average American homes could be built from itOver 1 Billion people without access to waterAbundance mentality – grow the pot not get more from it.Locally we have a lot of discussion on maintaining green space – local planning ordinances actually waste more green space and promote sprawl
  • AFUE – Affective Fuel Utilization EfficiencySEER – Seasonal Energy Efficiency RatioU-Value – resistance to heating or cooling loss from inside to outsideSHGC – resistance to heat or cold transfering through window from outside to inside
  • AFUE – Affective Fuel Utilization EfficiencySEER – Seasonal Energy Efficiency RatioU-Value – resistance to heating or cooling loss from inside to outsideSHGC – resistance to heat or cold transfering through window from outside to inside
  • Keep runs under 40 ft.Parallel piping system – PEXCentral core system
  • Green home ppt 2 10_11

    1. 1. NWI Green Building Alliance<br />NWI Green Building Alliance<br />
    2. 2. What Makes a Home Green<br />Site Design and Development<br />Lot Design, Preparation, and Development<br />Resource Efficiency<br />Energy Efficiency<br />Water Efficiency<br />Indoor Environmental Quality<br />Operation, Maintenance, and Building Owner Education<br />NWI Green Building Alliance<br />
    3. 3. Goals of Green Building<br />Low Impact<br />Minimal impact on natural environment<br />Energy Efficient<br />Reduced Energy usage and Water usage<br />Healthy<br />Protect occupant health and increase productivity<br />Minimize waste<br />Designed and constructed in a manner that minimizes waste, pollution, and environmental degradation<br />
    4. 4. Impact of Buildings in U.S.A.<br />In the United States alone, buildings account for: •    72% of electricity consumption,•    39% of energy use,•    38% of all carbon dioxide (CO2) emissions,•    40% of raw materials use,•    30% of waste output (136 million tons annually), •    14% of potable water consumption.<br /><br />
    5. 5. More than Energy Efficiency<br />Energy Efficiency is the easiest quantifier<br />Easy to track what is paid each month<br />Long standing programs<br />Energy Guides for Appliance<br />Energy Star<br />Holistic approach<br />Building Science<br />Looks at a bigger picture<br />Considers cause and effect of inputs<br />NWI Green Building Alliance<br />
    6. 6. Minimize Environmental Impact<br />Landfills<br />Pacific Ocean Garbage Island<br />Carbon Footprint<br />Wasted Materials<br />Land Use<br />NWI Green Building Alliance<br />
    7. 7. North Pacific Garbage Gyre<br />Larger than Texas.<br />NWI Green Building Alliance<br />
    8. 8. Who Says It’s Green?<br />Beware of ‘Green Washing’ – unsubstantiated claims <br />Third-Party Verification<br />Blower Door Testing and other analytical tools<br />Certification Programs<br />Department of Energy<br />Energy Star<br />Builders Challenge<br />Water Sense<br />National Association of Home Builders (NAHB) Research Center’s ANSI approved National Green Building Standard<br />United States Green Building Council (USGBC) Leadership in Energy and Environmental Design for Homes (LEED-H)<br />Environments for Living, Green Globes, etc.<br />NWI Green Building Alliance<br />
    9. 9. Blower Door Test<br />Depressurizes a house to find out how much air a home is leaking. Infrared cameras will show the hidden leakage.<br />NWI Green Building Alliance<br />
    10. 10. NWI Green Building Alliance<br />
    11. 11. Site Design and Development–The Basics<br />Refers to the overall perspective of where houses will be built, why, and what effect will the project have<br />Where do you choose to build<br />Avoid detrimental environmental impacts, minimize any unavoidable impacts, and mitigate those that do occur<br />NWI Green Building Alliance<br />
    12. 12. Site Design and Development–New Homes<br />Protect natural resources<br />Building orientation<br />Slope disturbance<br />Erosion <br />Storm water management<br />Landscape Plan<br />Preserve existing vegetation and trees<br />Density<br />Availability of Mass Transit<br />NWI Green Building Alliance<br />
    13. 13. NWI Green Building Alliance<br />
    14. 14. NWI Green Building Alliance<br />
    15. 15. Lot Design, Preparation, and Development – New Homes<br />Choosing a lot – infill, grayfield<br />Density<br />Availability of mass transportation, walkways, community resources<br />What happens to natural resources on the lot?<br />How is equipment used on the lot<br />What steps are taken to minimize soil disturbance, erosion?<br />How is storm water from the finished lot handled?<br />Vegetative swales<br />French drains<br />Rain gardens<br />wetlands<br />NWI Green Building Alliance<br />
    16. 16. Lot Design, Preparation, and Development–Existing Homes<br />Choose appropriate landscape and hardscape additions and placement<br />Consider adding Rain Gardens or Bioswales<br />Choose appropriate plant selections<br />Avoid sensitive areas<br />NWI Green Building Alliance<br />
    17. 17. Resource Efficiency – New Homes<br />Does it utilize<br /> reused or salvaged materials, <br />recycled content in the new materials<br />Is construction waste recycled?<br />Are renewable options chosen when available?<br />Are sustainable and responsible practices used by the manufacturing companies?<br />NWI Green Building Alliance<br />
    18. 18. NWI Green Building Alliance<br />
    19. 19. Resource Efficiency – Existing Homes<br />The same practices applied to an existing home –<br />Can any lumber be reused?<br />Can deconstruction materials be recycled?<br />Are materials chosen that come from responsible sources?<br />Companies that adapt environmentally friendly processes<br />Certified lumber<br />Chain of Custody<br />Recycled or BiobasedContent<br />NWI Green Building Alliance<br />
    20. 20. NWI Green Building Alliance<br />
    21. 21. Energy Efficiency – The Basics<br />How much energy will a home require to operate<br />Based on the International Code Commission’s International Energy Construction Code (ICC IECC)<br />Don’t be afraid to ask pros what the jargon means<br />Department of the Energy has very good tools available<br />NWI Green Building Alliance<br />
    22. 22. What your energy is used for:<br />NWI Green Building Alliance<br />
    23. 23. Energy Efficiency – The Basics<br />Includes:<br />Building envelope<br />Insulation and air sealing<br />Window and Door selection<br />Heating and Cooling equipment selection<br />HVAC system performance and efficiency<br />Duct system<br />NWI Green Building Alliance<br />
    24. 24. Energy Efficiency – New Homes<br />Equipment<br />Heating - At least 90% AFUE for gas and propane<br />Cooling – 14 SEER <br />Type of system determines AFUE and SEER needed<br />Properly Sized for project<br />Manual J, Manual D, Manual S<br />Sealed Ductwork<br />Windows – Look at the U-value and SHGC<br />U-value for our area is maximum of .30<br />SHGC value for our area is ‘any’<br />NWI Green Building Alliance<br />
    25. 25. NWI Green Building Alliance<br />
    26. 26. NWI Green Building Alliance<br />
    27. 27. Energy Efficiency – New Homes<br />Insulation<br />R value – a measure of thermal resistance<br />Zone 5 recommendations:<br />Walls – R19<br />Roof – R30<br />Air Sealing<br />Seal plates, joints<br />Avoid accidental ventilation<br />Lighting – use low consumption choices<br />CFLs, LEDs<br />NWI Green Building Alliance<br />
    28. 28. NWI Green Building Alliance<br />
    29. 29. Energy Efficiency – Existing Homes<br />Using polybutyl caulk to seal air infiltrations<br />Flexible, paintable<br />Seal ductwork where possible<br />Use mastic or duct sealing tape<br />Replace windows and doors with higher efficiency products.<br />Look for products that meet Energy Star requirements.<br />Add insulation<br />Consider impact of improvements!<br />NWI Green Building Alliance<br />
    30. 30. NWI Green Building Alliance<br />
    31. 31. Water Efficiency – Existing Homes<br />Water-Conserving Appliances<br />Showerheads - Between 1.6 gpm and 2.5 gpm<br />Faucets – 1.5 gpm or less at 60 psi<br />Use aerators<br />Toilets – 1.6 or 1.28 gpf<br />Planned irrigation system<br />Rainwater Collection<br />Automatic shutoff water devices<br />NWI Green Building Alliance<br />
    32. 32. Water Efficiency – New Homes<br />The average U.S. household uses<br />350 gallons of water per day (inside only) <br />Efficient delivery system<br />Reduce water in plumbing runs<br />Keep hot water source close to usage point<br />Water-Conserving Appliances<br />Showerheads - Between 1.6 gpm and 2.5 gpm<br />Faucets – 1.5 gpm or less at 60 psi<br />Toilets – 1.6 or 1.28 gpf<br />Planned irrigation system<br />Rainwater Collection<br />Gray water use<br />Automatic shutoff water devices<br />NWI Green Building Alliance<br />
    33. 33. NWI Green Building Alliance<br />
    34. 34. Indoor Environmental Quality - Basics<br />Keep the air inside healthy!<br />4 of 10 children in North America will develop respiratory disorders and ADD symptoms that are caused by environmental elements <br />Only 2 harmful environmental elements are found in greater concentration outside the home.<br />Spend 90% of time indoors<br />NWI Green Building Alliance<br />
    35. 35. Indoor Environmental Quality – New or Existing Homes<br />Pollution Sources<br />Combustion Equipment (furnace, hot water heater)<br />Cooking<br />Attached garages<br />Fireplaces and fuel burning appliances<br />Materials used<br />Ventilation<br />Humidity control<br />Fresh Air Intake (Make up air)<br />Filtration System (MERV 8 or greater)<br />Balanced System<br />NWI Green Building Alliance<br />
    36. 36. Indoor Environmental Quality – New or Existing Homes<br />Moisture Management<br />Keep water out of the house!<br />Proper flashing<br />Think like a rain drop<br />Moisture and vapor barriers –see slide<br />Insulation and air sealing<br />Hot meets cold, damp meets dry – problems!<br />Mitigation<br />capillary breaks<br />Ventilation (bathroom fans)<br />Dry materials<br />Appropriate materials<br />NWI Green Building Alliance<br />
    37. 37. Moisture Barrier<br />Keep Water outside the building envelop<br />NWI Green Building Alliance<br />
    38. 38. Indoor Environmental Quality – New or Existing Homes<br />Pay Attention to Materials Used!<br />Most materials used for construction today have information available about how they made and what is used<br />Several systems based on product<br />CARB (California Air Resources Board)<br />GreenGuard<br />Green Label Plus (carpeting)<br />VOCs - Volatile Organic Compounds<br />Urea-formaldehyde<br />NWI Green Building Alliance<br />
    39. 39. NWI Green Building Alliance<br />Solar Thermal Heating 90 Solar Evacuated tube system that heats his house through the floor with tubing(Radiant). <br />
    40. 40. NWI Green Building Alliance<br />HVAC Options- GeoThermal<br />
    41. 41. Conservationvs. Efficiency<br />Information courtesy of Stephanie Johnson, Jasper County REMC<br />NWI Green Building Alliance<br />
    42. 42. Practical Green Tips for Everyone<br />Change furnace filter regularly<br />Seal ductwork where possible<br />Add aerators to faucets<br />Change shower heads and toilets to low flow units<br />Recycle<br />Compost<br />Rain Barrels and Rain Gardens<br />Change Lightbulbs to CFLs or LED lighting<br />Difference in color of light available<br />NWI Green Building Alliance<br />
    43. 43. Operation, Maintenance, and Building Owner Education – New and Existing Homes<br />Orientation should include how to operate all the systems in the home<br />Data accumulated on materials, components<br />Manuals<br />Understand seasonal changes that will affect the building<br />Information on pest control<br />Training<br />(HVAC filters, thermostat operation and programming, lighting controls, appliance and water heater settings)<br />NWI Green Building Alliance<br />
    44. 44. Operation, Maintenance, and Building Owner Education – New Homes<br />Construction Manual<br />Placement of utilities<br />Safety features (shut off valves and major system controls)<br />Construction drawings<br />Photo record<br />Operations Manual<br />How to conserve water and energy<br />Recycling programs<br />Local public transportation options<br />Maintenance Manual<br />NWI Green Building Alliance<br />
    45. 45. Operation, Maintenance, and Building Owner Education – Existing Homes<br />Keep your documents, manuals, and warranties<br />Ask for detailed information from professionals selling and installing new equipment<br />Keep a record – including photos – for upgrades and replacements<br />Utility lines<br />NWI Green Building Alliance<br />