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Engineered Wood Sustainability And Green Building Practices Slide Show

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Engineered Wood Sustainability And Green Building Practices Slide Show

  1. 1. Engineered Wood, Sustainability and Green Building Practices Green Building Practices For Wood Frame Construction
  2. 2. Learning Objectives After this session, you will be equipped to : Define and Discuss Sustainability Issues Compare construction materials for “green” compatibility Identify and select various Green Rating Tools Compare/contrast Green Building Programs Evaluate various EWP products based on the deconstruction/reconstruction principle Discuss EWP framing systems recognized as “green” by current Green Build programs.
  3. 3. Energy FactsEnergy doesn’t grow on treesDecisions are now being made based on energy costs and sustainability
  4. 4. A New Vocabulary Life CycleSustainability Renewability Costs Carbon Carbon EmbodiedSequestration Footprint Energy
  5. 5. A New Vocabulary GreenBuilding LEED Building Green Standard Green Charrette Globes
  6. 6. Components of Green Building Resource Efficiency Environmental Energy Impact Efficiency
  7. 7. Renewable Resources? Wood Concrete SteelInsulating Value? Yes NO NO Renewable? Yes NO NOLow Energy Cost to Yes NO NO produce? Purifies the air? Yes NO NO Potentially Yes NO NOUnlimited Supply?
  8. 8. Forestry FactsWood is renewable and sustainable Source: APA
  9. 9. Wood is Good for the environmentUS Raw Material Production and Total Energy Used Source: APA
  10. 10. Nature’s Air Purifier!A growing forest produces 1 ton of oxygen andabsorbs 1.4 tons of carbon for every ton of woodMature trees slow in their absorption rate of CO2Harvesting insures that the carbon is locked in thewood (Carbon Sequestration) .Decaying trees release stored carbon back into theatmosphereNew trees with rapid absorption rates can bereplanted to continue this air purification.Source: APA
  11. 11. Benefits of Wood vs. Steel and Concrete high insulating and acoustic properties recycling and resource recovery rates low pollution rates in harvesting and millinghttp://www.engineeringtoolbox.com/thermal-conductivity-d_429.html
  12. 12. Lifecycle Analysis Resource Extraction Disposal, Reuse Manufacturing or Recycling Building Onsite Demolition ConstructionSource: Buildinghttp://www.athenasmi.org/ Occupancy &about/lcaModel.html Maintenance
  13. 13. Comparison of Materials 5 times 126 times 14 times 24 timesmore energy more energy more energy more energyto produce 1 to produce 1 to produce 1 to produce 1 ton of ton of ton of glass. ton of steel. cement · aluminum. Source: APA
  14. 14. LCA Wood vs. Steel and Concrete CORRIM Study Results:Wood vs. Steel: 17% embodied energy savings with woodWood vs. Concrete: 16% embodied energy savings with wood www.CORRIM.org
  15. 15. Lifecycle Analysis: the environmental proof of wood* Sustainability Attribute Wood Steel Concrete• Total Energy Use • Lowest • + 140% • +70%• Greenhouse Gases • Lowest • +45% • +81%• Air Pollution • Lowest • +42% • +67%• Water Pollution • Lowest • +1900% • +90%• Solid Waste • Lowest • +36% • +96%• Ecological Resource Use • Lowest • +16% • +97% Source: Athena Institute. http://www.athenasmi.org * Sullivan and Horwitz-Bennett, Using wood for sustainable design&construction
  16. 16. Not all engineered products are created “green”-equal
  17. 17. Green Building Programs- Who’s in the “LEED” National ProgramsUSGBC/L.E.E.D. Leadership in Energy and Environmental DesignNAHB/Green Building StandardGreen Building Initiative/Green Globes
  18. 18. USGBC/L.E.E.D. for Homes Mission:Promote sustainable building Top 25% of Homes http://www.usgbc.org/ShowFile.aspx?DocumentID=3638 Best Environmental FeaturesPromote Green Residential BuildersPromote Green Commercial Building
  19. 19. USGBC/L.E.E.D. Categories Location & SustainableInnovation Linkages Sites Water Energy & Material &Efficiency Atmosphere Resources Awareness Indoor Air and Quality Education
  20. 20. USGBC/L.E.E.D. Platinum Gold Silver CertifiedPoints adjusted for larger/smaller homes
  21. 21. USGBC/L.E.E.D. How to ParticipateJoinIdentify project team (Charrette)Build the homeCertifySellRepeat…
  22. 22. NAHB Green Building ProgramHBA drivenOnline scoring toolBased on GB Guidelines document Foundation for HBA programsResidential ISO Standard -2008
  23. 23. NAHB Green Building Program Lot Design, Resource Energy Preparation, Efficiency Efficiency Development Operation, Indoor Maintenance, Water Efficiency Environmental Homeowner Quality Education Global Impact
  24. 24. NAHB Green Building Program Emerald Gold Silver Bronze
  25. 25. NAHB Green Building Program Builder ParticipationCalculate your scoreForward to Green VerifierBuild and verify Green StatusCertify Home Test and InspectBuild again
  26. 26. Green Building Initiative MissionAccelerate best building practicesGreen Globes (commercial construction)Integrates use of Athena EcoCalculatorANSI Standard for assessment of Commercial BuildingsPromotes NAHB program to HBA’s
  27. 27. National Program SimilaritiesChecklist based3rd party verification requiredSimilar categories addressed: Resource efficiency Energy efficiencyFraming recommendation similar: Advanced Framing and O.V.E.Designed to create marketing opportunities
  28. 28. National Program DifferencesNAHB program requires environmental management systems for manufacturer and builder- ISO 14001FSC the only forestry certification for LEED. (USGBC position under review) NAHB recognizes multiple certifications.LEED predominantly paper based, NAHB and Globes are web-based programs.
  29. 29. Regional Green Building Programs Wisconsin Green Built Home http://wi-ei.org/greenbuilt/ New construction, remodeling, multifamily, waterfront programs Wisconsin Energy Star or REScheck +15 levels Based on points checklist Minimum 10% 3rd party verified
  30. 30. Regional Green Building Programs Minnesota Green Star http://www.mngreenstar.org/ New construction and remodeling Certified, Silver, Gold levels Based on a points checklist All 3rd party verified
  31. 31. The Big “3” for wood frame: Summary Categories Resource Efficiency Environmental Energy Impact Efficiency
  32. 32. ResourceEfficiency Finding a Fit for Fiber: Determining Optimum Value is A Manufacturer’s Responsibility
  33. 33. ResourceEfficiency The Principle: Best And Highest Use
  34. 34. EnergyEfficiency Resource Efficient products used in an Energy Efficient Manner
  35. 35. EnergyEfficiency Interplay between the wood frame system and the thermal envelope
  36. 36. Environment Protect the environment as you conduct your business• NAHB Program requirement: “the product line, plant, or company must be ISO 14001 certified.”
  37. 37. EWP Applications meeting GreenBuilding Guidelines- Resource Efficiency Life Cycle Assessment Tool Download EcoCalculator at: http://www.athenasmi.org/index.html
  38. 38. EWP Applications meeting GreenBuilding Guidelines- Resource EfficiencyResource Efficiency Use OVE/Advanced Framing 4’ and 2 Modules Wider o/c Spacing More InsulationEliminate thermal bridgingSingle top plates2 stud corners with drywall clipsP.E.T.Construction layouts
  39. 39. EWP Applications meeting GreenBuilding Guidelines-Resource EfficiencyResource Efficiency Applications- EWP Wide Flange I Joists 24 oc performance Framing layouts Panelize P.E.T.
  40. 40. EWP Applications meeting GreenBuilding Guidelines- Energy Efficiency Energy Efficiency Requirements: Increase R Value in the building envelope Applications: Remove wood, decrease thermal bridging, increase insulation…..how? Use wide flange, heavy duty I joists at 24 oc., 1 ¾” wide face studs for walls. Stack roof framing over wall framing over floor framing in a 24” oc module. Use energy efficient materials when possible.
  41. 41. Advanced Framing Techniques
  42. 42. EWP Applications meeting Green Building Guidelines Environmental ImpactISO 14001 Environmental Management System Defined: An objectively verifiable declaration of your intended environmental management system.
  43. 43. Summary WOODClearly superior building materialEWP provides optimum performance opportunitiesNot all Engineered Wood is created GREEN equal.
  44. 44. Learning Objectives Did we???????? Define and Discuss Sustainability Issues Compare construction materials for “green” compatibility Identify and select various Green Rating Tools Compare/contrast Green Building Programs Evaluate various EWP products based on the deconstruction/reconstruction principle Discuss EWP framing systems recognized as “green” by current Green Build programs.
  45. 45. Engineered Wood, Sustainability and Green Building Practices Green Building Practices For Wood Frame Construction

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