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Leed for-homes Presentation Transcript

  • 1. LEED for HomesTips for Successful Projects
    Ann Edminster
    M.Arch., LEED AP
    Design AVEnues avedminster@designavenues.net | 115 Angelita Avenue | Pacifica, CA 94044 | 650-355-9150
    © Design AVEnues 2009. Reproduction, distribution, display and use of the presentation without written permission of the speaker is prohibited.
  • 2. The Main Points
    Understand the program
    Understand the process
    Use integrative design
    Model early & often
    Get the order right
    Set expectations
    Manage the process
  • 3. ± 90
    PLATINUM
    ± 75
    GOLD
    ± 60
    SILVER
    ± 45
    CERTIFIED
    UNDERSTAND THE PROGRAM
    Comply with all MANDATORY MEASURES, a.k.a. prerequisites
    Meet or exceed category POINT “FLOORS”
    Achieve minimum overall SCORE
  • 4. The Threshold Adjuster
    … compensates for the overarching effect of home
    size on resource use by adjusting the award level
    point thresholds based on floor area.
  • 5. Home Size
    In 1950
    In 1970
    1.6x 1950
    297 SF/personaverage floor area 1,000 SF 3.37 people per household
    478 SF/person average floor area 1,500 SF 3.14 people per household
    In 2000
    2.8 x 1950
    840 SF/person average floor area 2,200 SF 2.62 people per household
  • 6. The Rating CategoriesID LL SS WE EA MR EQ AE
    INNOVATION & DESIGN PROCESS
    INDOOR ENVIRONMENTAL QUALITY
    ENERGY & ATMOSPHERE
    SUSTAINABLE SITES
    LOCATION & LINKAGES
    WATER EFFICIENCY
    MATERIALS & RESOURCES
    AWARENESS & EDUCATION
  • 7. Points, Floors, Prerequisites
    POINTS: 22FLOOR: 5 PREREQS: 2
    POINTS: 11 FLOOR: 0PREREQS: 3
    POINTS: 38FLOOR: 0PREREQS: 8
    POINTS: 21FLOOR: 6 PREREQS: 7
    ID LL SS WE EA MR EQ AE
    POINTS: 15FLOOR: 3 PREREQS: 0
    POINTS: 16FLOOR: 2 PREREQS: 3
    POINTS: 3FLOOR: 0PREREQS: 1
    POINTS: 10FLOOR: 0 PREREQS: 0
  • 8. USGBC
    PROVIDER
    PROJECT TEAM
    The Delivery System
    GREEN RATER
  • 9. Roles & Responsibilities
    PROVIDER
    • Oversight  Certification  Quality assurance  Liaison to USGBC
  • Roles & Responsibilities
    PROVIDER
    • Oversight  Certification  Quality assurance  Liaison to USGBC
    GREEN RATER
    • Preliminary review
    • 10. LEED on-site verification
    • 11. Navigational support
    • 12. Certification administration
    • 13. Consulting (sometimes)
  • Roles & Responsibilities
    PROVIDER
    • Oversight  Certification  Quality assurance  Liaison to USGBC
    GREEN RATER
    • Preliminary review
    • 14. LEED on-site verification
    • 15. Navigational support
    • 16. Certification administration
    • 17. Consulting (sometimes)
    HERS RATER
    • HERS on-site verification
    • 18. Performance testing
    • 19. Modeling (sometimes)
  • Roles & Responsibilities
    PROJECT TEAM
    • COMMIT (Contract Documents)
    • 20. Plan and follow through
    • 21. Document your decisions
    • 22. Prepare submittals
  • Roles & Responsibilities
    PROJECT TEAM
    • Submittals
    • 23. Durability forms
    • 24. CIR/ID proposals
    • 25. Accountability Forms
    • 26. EPP information
    • 27. O&M manual
    • 28. Additional documentation
  • UNDERSTAND THE PROCESS
    • Pre-construction
    • 29. During Construction
    • 30. Completion
  • The LEED for HomesProcess
    SELECT PROVIDER
    SELECT GREEN RATER
    REGISTER ONLINE
    CONFER WITH GREEN RATER & REVIEW PLANS
    BUILD GREEN HOME(S)
    SUBMIT INITIAL PAPERWORK
    DOCUMENTATION& FINAL VERIFICATION
    PRE-DRYWALL VERIFICATION
    COMPLETE HOME(S) & LANDSCAPE
    PRE-DRYWALL VERIFICATION
    COMPLETE HOME(S) & LANDSCAPE
    Certification!
  • 31. CONFER WITH GREEN RATER & REVIEW PLANS
    PRE-CONSTRUCTION
    • Review design with Provider & Green Rater
    • 32. Identify additional work needed
    • 33. Estimate score and rating level
    • 34. Promote per USGBC guidelines (optional)
  • PRE-CONSTRUCTION
    SUBMIT INITIAL PAPERWORK
    • Durability Risk Evaluation
    • 35. Durability Checklist
    • 36. HERS Report (energy modeling)
    • 37. Waste Diversion Plan
  • DURING CONSTRUCTION
    PRE-DRYWALL VERIFICATION
    PRE-DRYWALL VERIFICATION
    • Thermal bypass inspection
    • 38. Durability / envelope measures (optional)
    • 39. Site protections
  • COMPLETION
    DOCUMENTATION
    • Accountability forms 
    • 40. O&M manual
    • 41. Materials list
    • 42. Calculations, etc.
  • COMPLETION
    MANDATORY TESTS
    Envelope air leakage
    Duct leakage
    Refrigerant charge
    OPTIONAL TESTS
    Outdoor air flow
    Exhaust air flow
    Supply air distribution
    Irrigation system
    & FINAL VERIFICATION
    • On-site verification
    • 43. Performance testing
    • 44. Paperwork verification
    • 45. Scoring & rating
    • 46. Certification
  • USE INTEGRATIVE DESIGN
    Courtesy of Duncan Prahl, IBACOS
  • 47. USE INTEGRATIVE DESIGN
    “Integrated design can reduce construction cost while providing significant sustainable design benefits. On the CSU Monterey Bay Library, by comparing a number of integrated structural, mechanical, and architectural schemes, we found that tradeoffs from one discipline more than offset added costs in another, while achieving energy savings of almost 40%.”
    ~ Scott Shell, EHDD Architects
    Courtesy of Duncan Prahl, IBACOS
  • 48. “Any phenomenon is controlled both by the working of its smaller parts and by its role in the larger system of which it is a part.”
    • H.T. Odum (Environment, Power & Society, 1971)
  • The integrative design process
    Recognizes that each aspect of building design influences others
    Envelope affects HVAC sizing
    Windows affect lighting loads
    Lighting affects cooling loads
    Waste heat from one process can be pre-heating for another
    © Eraxion | Dreamstime.com
  • 49. Keys to integrative design
    Commit to the integrative design process
    Hold a charrette
    Have regular meetings
    Establish communication protocols
    Identify scope of responsibilities and interactions for all parties
  • 50. Build your team
    Assess your team’s capabilities
    Identify any voids 
    Fill the voids
    Energy savvy?
    © Dandanos | Dreamstime.com
  • 51. Who should be involved?
  • 52. Who should be involved?
    Owner/developer
    Architect
    General contractor
    MEP consultant(s)
    Energy analyst
    Landscape designer
    Interior designer
    Others …
    © Pressmaster | Dreamstime.com
  • 53. Who should be involved?
    Owner/developer
    Architect
    General contractor
    MEP consultant(s)
    Energy analyst
    Landscape designer
    Interior designer
    Others …
    One and the same?
    © Pressmaster | Dreamstime.com
  • 54. The integrative design process
    Develop a design concept
    Test alternatives using parametric analysis – evaluate effect of one variable at a time on:
    energy performance
    constructability & cost
    other aspects of design
    Test different combinations
    © Antonprado | Dreamstime.com
  • 55. MODEL EARLY & OFTEN
    Energy modeling: it’s not just about compliance – it’s a design tool!
  • 56. MODEL EARLY & OFTEN
    © Kellyoptra | Dreamstime.com
    Energy modeling: it’s not just about compliance – it’s a design tool!
  • 57. MODEL EARLY & OFTEN
    NOT
    © Kellyoptra | Dreamstime.com
    © Brandonparry | Dreamstime.com
    Energy modeling: it’s not just about compliance – it’s a design tool!
  • 58. Your energy consultant
    Choosing a good one
    Experience matters (relevantexperience)
    Mindset matters (maybe even more!)
    Collaborating
    A member of the design team
    Your mechanical engineer, possibly?
    Needs to understand all the design opportunities
  • 59. When and why should you do energy modeling?
    Before the charrette
    During the charrette
    To test design options
    To qualify for tax credits & other incentives
    To comply with green building programs
    To capture the performance as accurately as possible!
    EARLY & OFTEN!
  • 60. GET THE ORDER RIGHT
    • The Basics
    Siting
    Massing
    Orientation
    © Gabigarcia | Dreamstime.com
  • 61. GET THE ORDER RIGHT
    • The Basics
    Siting
    Massing
    Orientation
    Sun
    Wind
    Water
    Neighbors
    Trees
    © Gabigarcia | Dreamstime.com
    © Serg_velusceac | Dreamstime.com
  • 62.
    • Minimize Occupant-driven Loads
    Can you control the stuff?
  • 63.
    • Minimize Occupant-driven Loads
    Can you control the stuff?
    Design can influence energy-use behavior
    Cross-ventilation, etc.
    Tassafaronga, David Baker + Partners
  • 64.
    • Minimize Occupant-driven Loads
    Can you control the stuff?
    Design can influence energy-use behavior
    Cross-ventilation, etc.
    Monitoring & feedback
    Courtesy Lucid Design Group
    Tassafaronga, David Baker + Partners
  • 65.
    • Minimize Enclosure Loads
    It’s all about the envelope!
    Mike Keesee, SMUD, Project Manager, The House of the Future
  • 66.
    • Minimize Enclosure Loads
    Window orientation & size
    Window shading
    Window R-value(not U!)
    Window SHGC
    It’s all about the envelope!
    Mike Keesee, SMUD, Project Manager, The House of the Future
  • 67.
    • Minimize Enclosure Loads
    Window orientation & size
    Window shading
    Window R-value(not U!)
    Window SHGC
    Structure (thermal bridging)
    It’s all about the envelope!
    Mike Keesee, SMUD, Project Manager, The House of the Future
  • 68.
    • Minimize Enclosure Loads
    Window orientation & size
    Window shading
    Window R-value(not U!)
    Window SHGC
    Structure (thermal bridging)
    Air leakage
    It’s all about the envelope!
    Mike Keesee, SMUD, Project Manager, The House of the Future
  • 69.
    • Minimize Enclosure Loads
    Window orientation & size
    Window shading
    Window R-value(not U!)
    Window SHGC
    Structure (thermal bridging)
    Air leakage
    Insulation quantity
    Insulation quality
    It’s all about the envelope!
    Mike Keesee, SMUD, Project Manager, The House of the Future
  • 70.
    • Minimize Equipment Loads
    Heating efficiency & sizing
    Cooling efficiency & sizing
    Duct leakage & sizing
    Water heater efficiency
    Hot water distribution
    Lighting
    Appliances
    © Caraman | Dreamstime.com
  • 71.
    • Integrate the Other Issues
    Indoor environmental quality
  • 72.
    • Integrate the Other Issues
    Indoor environmental quality
    Water efficiency
    Plumbing
    Plants
    Irrigation
  • 73.
    • Integrate the Other Issues
    Indoor environmental quality
    Water efficiency
    Plumbing
    Plants
    Irrigation
    Materials
  • 74.
    • Integrate the Other Issues
    Indoor environmental quality
    Water efficiency
    Plumbing
    Plants
    Irrigation
    Materials
    Site and stormwater protections
  • 75.
    • Integrate the Other Issues
    Indoor environmental quality
    Water efficiency
    Plumbing
    Plants
    Irrigation
    Materials
    Site and stormwater protections
    Renewable energy
  • 76. SET EXPECTATIONS
    LEED for Homes is an above-codeprogram
    It will require change from all parties
    Anticipate needs for education
    Document all agreements
  • 77. Focus on what’s different
    • Energy Star / Thermal Bypass Checklist
  • Focus on what’s different
    • Energy Star / Thermal Bypass Checklist
    • 78. Durability planning
  • Focus on what’s different
    • Energy Star / Thermal Bypass Checklist
    • 79. Durability planning
    • 80. Waste planning
  • Focus on what’s different
    • Energy Star / Thermal Bypass Checklist
    • 81. Durability planning
    • 82. Waste planning
    • 83. Operations & maintenance manual
  • Offer education & resources
    HERS Rater shadowing
    Diagnostic pre-testing
    Trades training
    Resource listings
    Waste diversion opportunities & methods
    Continuing education = competitive advantage
    Learning curve = continuing education investment, not a cost of the project.
  • 84. Understand cost impacts
    New practices
    • You’re no longer creating the same product, so the cost will probably change;how much depends on current practices.
  • Hyundai? … or Honda?
    • More fuel-efficient
    • 85. More durable
    • 86. Better-designed
    • 87. More comfortable
    • 88. Superficially similar, but …
    Cost difference? Substantial.
  • 89. Honda? … or Honda with sunroof?
    • Same fuel efficiency
    • 90. Same durability
    • 91. Same design quality
    • 92. Slight increase in comfort
    • 93. Pretty much the same –
    Cost difference? Minor.
  • 94. Understand cost impacts
    New practices
    New baseline, new product, new price?
    Learning curve
    One-time investment benefits all future projects
  • 95. Understand cost impacts
    New practices
    New baseline, new product, new price?
    Learning curve
    One-time investment benefits all future projects
    Program administration
    Verification + Quality Management = VALUEADDED
  • 96. MANAGE THE PROCESS
    Assign responsibility for every credit
  • 97. Manage the process
    Assign someone to shepherdthe responsible parties
    Check in with key parties monthly
    Prompt for questions, documentation
    © Koljambus | Dreamstime.com
  • 98. Manage the process
    Provide research and tracking tools (MR2)
  • 99. Manage the process
    Provide research and tracking tools (MR3)
  • 100. Manage the process
    Provide research and tracking tools (WE3)
  • 101. Manage the process
    Ensure every LEED measure being pursued is in the construction documents!
  • 102. Keys to success
    • Commitment
    • 103. Capacity-building
    • 104. Planning & organization
    • 105. Selling the benefits
    • 106. Ongoing communication
  • Q & A
    Thank you!
    avedminster@designavenues.net