The Green Programs. National Environmental Health Assn. 3/8/12 - Wash. DC

Transcription

1 The Green Programs National Environmental Health Assn. 3/8/12 - Wash. DC David Price 1 David Price 2 1

2 Residential Green Building Programs 1. National programs National Green Building Standard ICC (International Code Conf. (ICC) & NAHB) LEED for Homes Rating System Jan (U.S. Green Building Council) 2. State, Local, City programs 60-plus distinct programs nationwide 3. Regional Programs Environments for Living (Masco Corp.) EarthCraft (Greater Atlanta HBA & Southface) David Price 3 Cost Analysis Additional costs for certified green building Construction Costs Verification / Testing Costs Certification Fees David Price 4 2

3 David Price 5 National Green Building Standard ICC Developed ANSI open consensus process ANSI approved January, 2009 Sponsors: NAHB & Intrnl. Code Council (ICC) 42 committee members 36% Producers 33% Users 31% General 7 Task Groups 3 Ballot & Public Comment Cycles David Price 6 3

4 National Green Building Standard -Scope - Land Development Single Family Multi-family Additions Renovations David Price 7 Categories of Green Practices Lot Design Resource Efficiency Energy Efficiency Water Efficiency Indoor Environmental Quality Home owner education David Price 8 4

5 Certification Process Builder uses Green Scoring Tool to evaluate building Project Analysis shows points achieved Produces Designer s Report for Verifier Builder hires Verifier Verifier must be accredited; listed at Third-party Verification of all items required 2 inspections: rough & final Verifier submits report for review and approval NAHB Research Center issues certification David Price 9 Levels of Green Certification Bronze, Silver, Gold, and Emerald Minimum score per section required for each level Need additional points above section minimums The lowest section score determines the home s overall level David Price 10 5

6 Chapter 7 Energy Efficiency Example of a Green Practice ENERGY STAR or equivalent appliance(s) are installed: (1) Refrigerator 5 (2) Dishwasher 2 (3) Washing machine 4 David Price 11 Chapter 8 Water Efficiency Green Building Practice Sections Indoor and Outdoor Water Use Innovative Practices Example of a Green Practice A low-volume irrigation system is installed for each landscape type utilized: (1) High distribution uniformity (DU) rotating spray heads 2 (2) Drip irrigation 4 (3) Bubblers 4 (4) Drip emitters 4 (5) Soaker hose 4 (6) Subsurface irrigation 6 Point Modification: Points awarded once for each type of irrigation system installed. Maximum 10 points. David Price 12 6

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8 Project Scoreboard David Price 15 8,140 homes certified Various levels 3/8/12 David Price 16 8

9 Verification Costs Verifier fees are dependant on local conditions Builder contracts directly with verifier 300+ Verifiers nationally Many more in the accreditation process Two inspections required Verifiers typically provide other inspection/testing services David Price 17 Certification Fees Single-Family Homes $500 per home $200 per home for NAHB members Multifamily buildings $500 per building, plus $20 per-unit fee $200 per building for NAHB members, plus $20/unit Land Development Design Approval $2,500 Certified Development $2,500 David Price 18 9

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12 David Price 23 Total LEED for Homes Certifications 16,506 units certified 9,799 multifamily 6,707 single family 8,285 affordable 8,221 market rate *Through

13 50 % LEED for Homes Certifications 16,167 Units 13

14 Why the strong growth? National Program, Internationally-recognized standard Rigorous, true third-party certification Required third-party Performance Testing Owner assurance of green measures through third-party verification Open, inclusive development process 14

15 LEED EVOLUTION LEED for Homes Certification/Accreditation LEED for Homes 2008 LEED Rating System Development 3+ years between rating system updates Next update project for late

16 NEGATIVE ENV. IMPACT POSITIVE ENV. IMPACT NET ZERO IMPACT Platinum Gold Silver Certified Platinum Gold Silver Certified Platinum Gold Silver Certified Platinum Gold Silver Certified David Price 31 LEED for Homes Project Checklist Project Name Date? N Y Credit 1 Integrative Process 3 Location and Transportation Possible Points: 14 Y Prereq 1 Fundamental Site Selection Required PERFORMANCE PATH Credit 1 LEED for Neighborhood Development Location 14 PRESCRIPTIVE PATH Credit 2 Enhanced Site Selection 3 Credit 3 Preferred Locations 4 Credit 4 Compact Development 3 Credit 5 Community Resources 2 Credit 6 Access to Transit 2 Sustainable Sites Possible Points: 8 Y Prereq 1 Construction Activity Pollution Prevention Required Y Prereq 2 No Invasive Plants Required Credit 1 Heat Island Reduction 2 Credit 2 Rainwater Management 4 Credit 3 Non-Toxic Pest Control 2 16

17 Water Efficiency Possible Points: 13 Y Prereq 1 Water Metering Required PERFORMANCE PATH Credit 1 Total Water Use 13 PRESCRIPTIVE PATH Credit 2 Indoor Water Use 6 Credit 3 Outdoor Water Use 4 Energy and Atmosphere Possible Points: 36 Y Prereq 1 Performance of ENERGY STAR for Homes Required Y Prereq 2 Home Size Required Y Prereq 3 Energy Metering Required Y Prereq 4 Education of the Homeowner/Tenant Required PERFORMANCE PATH Credit 1 Minimize Annual Energy Use 29 BOTH PATHS Credit 2 Efficient Hot Water Distribution System 3 Credit 3 Active Solar Ready Design 1 Credit 4 HVAC Start Up Credentialing 1 Credit 5 Advanced Utility Tracking 2 Credit 1 Minimize Annual Energy Use 29 BOTH PATHS Credit 2 Efficient Hot Water Distribution System 3 Credit 3 Active Solar Ready Design 1 Credit 4 HVAC Start Up Credentialing 1 Credit 5 Advanced Utility Tracking 2 PRESCRIPTIVE PATH Credit 5 Building Orientation for Passive Solar 3 Credit 6 Air Infiltration 2 Credit 7 Envelope Insulation 2 Credit 8 Windows 3 Credit 9 Space Heating & Cooling Equipment 4 Credit 10 Heating & Cooling Distirbution Systems 3 Credit 11 Efficient Domestic Hot Water Equipment 3 Credit 12 Lighting 2 Credit 13 High Efficiency Appliances 2 Credit 14 Renewable Energy 4 Materials and Resources Possible Points: 10 Y Prereq 1 Certified Tropical Wood Required Y Prereq 2 Durability Management Required Credit 1 Durability Management Verification 1 Credit 2 Material Efficient Framing 2 Credit 3 Environmentally Preferable Products 4 Credit 4 Materials Resource Management 3 17

18 Indoor Environmental Quality Possible Points: 16 Y Prereq 1 Ventilation Required Y Prereq 2 Combustion Venting Required Y Prereq 3 Garage Pollutant Protection Required Y Prereq 4 Radon Resistant Construction Required Y Prereq 5 Air FIltering Required Y Prereq 6 Environmental Tobacco Smoke Required Y Prereq 7 Compartmentalization Required Credit 1 Enhanced Ventilation 3 Credit 2 Contaminant Control 2 Credit 3 Balancing of Heating and Cooling Distribution Systems 3 Credit 4 Enhanced Compartmentalization 1 Credit 5 Combustion Venting 2 Credit 6 Garage Pollutant Protection 2 Credit 7 Low Emitting Products 3 Innovation Possible Points: 6 Y Prereq 1 Preliminary Meeting Required Credit 1 Innovation 1 Credit 2 LEED AP Homes 1 Credit 2 Pilot Credit 1 Credit 3 Open Points 3 Regional Priority Possible Points: 4 Credit 1 Regional Priority: Specific Credit 1 Credit 2 Regional Priority: Specific Credit 1 Credit 3 Regional Priority: Specific Credit 1 Credit 4 Regional Priority: Specific Credit 1 Total Possible Points: 110 Indoor airplus - Construction Elements QUALIFIED HOME + Pest Barriers + Moisture Control + Materials + Radon Control + Combustion Systems + HVAC Systems 18

19 INDOOR ENVIRONMENTAL QUALITY Goal align credits amongst SF, MF, and Mid-Rise New Prerequisites: Environmental Tobacco Smoke (MF & Mid-Rise) Compartmentalization (MF & Mid-Rise) New Credits: Low Emission Products (moved from MR category) Ban ETS (Mid-Rise) Enhanced Compartmentalization Removed Credits: Radon Resistant Construction Moisture Control INDOOR ENVIRONMENTAL QUALITY Prerequisites 1. Ventilation ASHRAE Combustion Venting 3. Garage Pollutant Prevention 4. Radon Resistant Construction 5. Air Filtering 6. Environmental Tobacco Smoke 7. Compartmentalization Or Indoor airplus 19

20 How IAP fits into LEED for Homes Green Building LEED IEQ Credit 1 = IAP PLUS Example Over 20 durability features not required in LEED David Price 39 David Price 40 20

21 David Price 41 Elements of Success A simple way to understand energy performance at-aglance Easy to interpret like MPG Measured and verified David Price 42 21

22 Home Energy Rating - HERS Index 1. Home Energy Rater Analyze home construction plans; onsite inspections Software package to perform an energy analysis of design. Projected, pre-construction HERS Index. 2. Rater works with the builder Identify the energy efficiency improvements to meet ENERGY STAR performance guidelines, or other program s requirements. 3. HERS Index generated Rater conducts onsite inspections, including a blower door test and a duct leakage test. Test results, along with house plan specs. and software, rater generates HERS Index score for the home. David Price 43 22