Determining Environmental Attributes of Building Materials … · 2020-03-24 · Determining...
Transcript of Determining Environmental Attributes of Building Materials … · 2020-03-24 · Determining...
Determining EnvironmentalAttributes of Building
Materials Under VariousGreen Building Programs
ll LEED LEEDll Green Globes Green Globesll Seattle (King County) Built Green Seattle (King County) Built Greenll Austin Green Building Program Austin Green Building Programll California Green Builder Program California Green Builder Programll Built Green Colorado Program Built Green Colorado Programll Wisconsin Wisconsin GreenbuiltGreenbuilt
Determining Environmental Attributes ofBuilding Materials Under Various Green
Building Programs
Leadership in Energyand Environmental
Design (LEED)
Point Distribution within Several LEED Programs
108 points 69 pointsTOTAL 1 pointHomeowner awareness 10 pointsLocation and linkages 4 points 5 pointsInnov. and design process 29 points 15 pointsIndoor air quality 24 points 13 pointsMaterials and resources 14 points 17 pointsEnergy and atmosphere 12 points 5 pointsWater efficiency 14 points 14 pointsSustainable sites
LEED-H,Version 1.72
LEED-NC,Version 2.2
Point Distribution within Several LEED Programs
108 points 69 pointsTOTAL 1 pointHomeowner awareness 10 pointsLocation and linkages 4 points 5 pointsInnov. and design process 29 points 15 pointsIndoor air quality 24 points 13 pointsMaterials and resources 14 points 17 pointsEnergy and atmosphere 12 points 5 pointsWater efficiency 14 points 14 pointsSustainable sites
LEED-H,Version 1.72
LEED-NC,Version 2.2
Points for “environmentally preferable materials” –
5 under LEED-NC
4 under LEED-H
Credit 7 - FSC certified wood
Credit 6 - Rapidly renewable matls (10-year or less harvesting cycle)
Credit 5.2 - Local/regional matls (harvesting)
Credit 5.1 - Local/regional matls (manufacturing)
Credit 5Environmentally preferable productsCredit 5.1 - Tropical hardwoods, if used,must be FSC [prerequisite]Credit 5.2 - Select environmentallypreferable products from list.
Credit 4.1 and 4.2 - Use of matls with recycled content
Credit 3 - Materials extracted/ manufacturedwithin 500 miles
Credit 3.1 and 3.2 - Use of salvaged/refurbished/reused matls
Credit 2.2 - Advanced framing techniques Credit 2.1 and 2.2 - Reduction of construction waste
LEED-H LEED-NC
Credits Related to Characteristics of Construction MaterialsUnder the LEED-NC and LEED-H Programs
Low-VOCPaintWalls, ceiling, trimLow-VOCInsulationRoof + floor + wallNo carpet in houseFlooringFloorLow-VOC carpet and padFlooringFloorLow-VOCCountersInterior
Low-VOCCabinets andtrim
InteriorQualifying EPPsComponentAssembly
FSC-certifiedFramingFloorFSC-certifiedFramingRoofCement replacementsCementFoundation
Guidelines for Environmentally PreferableMaterials Under LEED
- Recycled content carpet and pad- linoleum- bamboo- FSC certified wood- recycled content tile- sealed concrete
FlooringFloor
Qualifying EPPsComponentAssembly
Guidelines for Environmentally Preferable MaterialsUnder LEED
- Recycled content- FSC-certified
SheathingRoof + floor + wall
- Recycled content- Vegetated
RoofingRoof
Recycled contentInsulationRoof + floor + wall
Recycled contentInsulationRoof + floor + wall
Recycled contentGypsum boardWalls + ceilingsFSC-certifiedFramingInterior wallFSC-certifiedFramingExterior wall
Qualifying EPPsComponentAssembly
Guidelines for Environmentally PreferableMaterials Under LEED
Recycled contentCountersOther
- Recycled content- FSC-certified
Cabinets and trimOther
- Recycled content- FSC-certified
Doors and windowsOther Recycled contentDeckingLandscape
Qualifying EPPsComponentAssembly
- Recycled content- FSC-certified
SidingExterior wall
Guidelines for Environmentally PreferableMaterials Under LEED
ß To change the Rapidly Renewable Credit (Credit 6 under LEED-NC in Table 3) to a Biobased Credit.
Proposed Changes to LEED
ß To change the Rapidly Renewable Credit (Credit 6 under LEED-NC in Table 3) to a Biobased Credit.
ß To modify MRc7 to establish a basis for adoption of certification systems but maintain the FSC Certification requirement for wood products at this time.
Proposed Changes to LEED
ß There is no provision for systematic analysis of any construction material except wood – and then only by FSC.
ß Building materials assessments are not informed by LCA/LCI.
ß Designation of environmentally preferable materials is based largely on intuition, internal politics, and single attributes.
LEED Bldg. Mat’ls Stds Summarized
ß Materials designated as “green” under LEED are not necessarily better than non-designated materials; some, in fact, are demonstrably worse.
LEED Bldg. Mat’ls Stds Summarized
Green Globes
Point Distribution within Green Globes
1000 pointsTOTAL 200 points200 pointsIndoor environment 70 pointsEmissions, effluents, other 100 pointsResources 85 pointsWater 380 pointsEnergy 115 pointsSite 50 pointsProject management
PointsCategoryCategory
Point Distribution within Green Globes
1000 pointsTOTAL 200 points200 pointsIndoor environment 70 pointsEmissions, effluents, other 100 pointsResources 85 pointsWater 380 pointsEnergy 115 pointsSite 50 pointsProject management
PointsCategoryCategory
10 - What proportion of bldg matls and components are reused?10 - What proportion of bldg materials contain recycled post-
consumer content? 5 - What proportion of materials are bio-based mat’ls? 5 - What proportion of lumber and panel products are third-party
certified (SFI, CSA SFM Program, FSC, ATFS)?
30Minimize consumption and depletion of material resources
40Have the following assemblies been selected based on a life cycleassessment considering embodied energy and green house gasemissions? – Foundations and floor assemblies, structural systems,roof assemblies, other mat’s (cladding, windows, etc.)
PointsCharacteristic
Credits Related to Characteristics of Construction MaterialsUnder the Green Globes Program
10Re-use of existing structures10Building durability, adaptability and disassembly
Reduction, re-use and recycling of waste 10
PointsCharacteristic
Credits Related to Characteristics of Construction MaterialsUnder the Green Globes Program
ß A central focus of bldg matls assessment is LCA/LCI using international protocols.ß The program seeks to minimize use of non- renewable materials.ß Guidelines throughout the standards are based on established standards (ANSI, ASHRAE).ß There is no requirement for certification of any material other than wood, but any one of a number of certification programs are allowed.
Green Globes Bldg. Mat’ls Stds Summarized
The King County(Seattle) Green Building
Program
Point Distribution within Seattle GBP
827 points*TOTAL
129 pointsPromote environmentallyfriendly homeowner O&M
205 pointsMaterials efficiency 152 pointsHealth and indoor air quality 186 pointsEnergy efficiency 155 pointsSite and water RequiredBuild to green codes/regulations
PointsCategoryCategory
* Other points for innovation and certain required elements.
Point Distribution within Seattle GBP
827 pointsTOTAL
129 pointsPromote environmentallyfriendly homeowner O&M
205 pointsMaterials efficiency 152 pointsHealth and indoor air quality 186 pointsEnergy efficiency 155 pointsSite and water RequiredBuild to green codes/regulations
PointsCategoryCategory
8Use wood composites rather than lumber
3Formaldehyde, CFC, HCFC free products used* 3Use linoleum, cork, or bamboo flooring
8High durability products used10Use locally produced materials
17Use recycled materials27Wood FSC certified or equivalent25Limit project size
30Reuse materials48Recycle construction wastes/minimize wastes
PointsCharacteristic
Credits Related to Materials Efficiency Under the Seattle GBP
95/205
* Additional points (12-27) under the Health and Indoor Air Quality Section
ß Building materials assessments are not informed by LCA/LCI.ß Recycling reuse is a central theme.ß FSC or equivalent means FSC.ß Emphasis on not using sawn lumber.ß There is no requirement for certification of any material other than wood.
Seattle GBP Bldg. Mat’ls Stds Summarized
The Austin, TexasGreen Builder Program
ß The nation’s first green building program.
ß The program is rather informal (unless rating of a project is requested), with fact sheets available to builders on a wide range of topics, including construction materials.ß Assistance is provided to construction professionals and consumers in making choices when evaluating green building materials and systems.
Austin, Texas Bldg. GBP Stds Summarized
ß Builders can ask that a project be rated through this program. Ratings are done using USGBC (LEED) requirements.
Austin, Texas Bldg. GBP Stds Summarized
The California GreenBuilder Program
Focus Areas within California GBP
Construction waste diversionAdvanced ventilationWood conservationWater conservationEnergy efficiency
Focus AreaFocus Area
ß Is not a point-based system.
ß Seeks to minimize wood use through the use of engineered wood, computer controlled saws, off-site production of modular sections.ß Considerable attention to diversion of material from landfills.ß Certified wood specified, but certification may be SFI, ATFS, CSA, or FSC.
California Green Builder Program Summarized
ß Little attention to individual characteristics of building materials.
ß Building materials not assessed using LCA/LCI.
California Green Builder Program Summarized
The Built GreenColorado Program
Point Distribution within Built Green Colorado
12230
Req.Features
871+TOTAL 76+Water resource conservation
230Material resource efficiency 150+Health and safety/Indoor air qual. 380+Energy efficiency
35Site protectionPoints*CategoryCategory
* Each home must have a minimum of 70 points and include all required features.
Point Distribution within Built Green Colorado
12230
Req.Features
871+TOTAL 76+Water resource conservation
230Material resource efficiency 150+Health and safety/Indoor air qual. 380+Energy efficiency
35Site protectionPoints*CategoryCategory
* Each home must have a minimum of 70 points and include all required features.
15House size <1,500 ft2
8Use of locally sourced materials
12CFC, HCFC, Formaldehyde free* 13Reduced wood use (advanced framing)
8Use of long-life materials.
24Use engineered wood to reduce use of lumber. 23Wood materials are third party certified.
14Use of structural insulated panels instead of standard framing.
6Minimum job site waste.
30Use materials other than wood54Building materials with recycled/reused content
PointsCharacteristic
Credits Related to Material Resource Efficiency Under theBuilt Green Colorado Program
* Additional points under the Health and Indoor Air Quality Section
ß Major emphasis on recycling/reuse.ß Major emphasis on reduction of wood use (and particularly lumber use) and substitution of non-wood materials for wood.ß Third – party certified wood specified, but can be SFI, ATFS, CSA, or FSC.ß Certification not required for any material other than wood.ß No provision for systematic assessment of materials using LCA/LCI.
Colorado Built Green Program Summarized
The Wisconsin GreenBuilt Program
Point Distribution within Wisconsin GBP
185 pointsMaterials selection 153 pointsEnergy efficiency
47 pointsLandscape conservation andstormwater management
18 pointsSiting and land use
RequiredMeet basic requirements in energyefficiency, air tightness, ventilation,erosion control, recycling, use oftropical hardwoods.
PointsCategoryCategory
Must score at least 60 points in addition to meeting basic requirements.
Point Distribution within Wisconsin GBP (Cont.)
578 pointsTOTAL 33 pointsEfficient use of space 33 pointsBuilder operations
30 pointsWaste reduction, recycling anddisposal
23 pointsPlumbing and water conservation 56 pointsIndoor air quality
PointsCategoryCategory
Must score at least 60 points in addition to meeting basic requirements.
Materials Selection Criteria - Wisconsin GBP
4No vinyl
5Use of engineered wood products 4Use of highly durable materials
2Use of domestically produced mat.
4Use of regionally produced mat’ls
7Reduce materials consumption 16Use of non-wood materials 20FSC certified or equivalent 28Reused or recycled const. mat’ls
Points*CategoryCategory
ß Major emphasis on bldg mat. characteristics.ß Major emphasis on recycling/reuse.ß Certification by FSC or equivalent specified.ß Certification not required for any material other than wood.ß No provision for systematic assessment of materials using LCA/LCI.
Wisconsin Green Builder Program Summarized
BREEAM (Building ResearchEstablishment EnvironmentalAssessment Method), UK has
recently set a new standard forbuilding materials evaluation.
Comparison of Green Building Programs
3rd PartySFI, ATFS,CSA, FSC
FSCOnlyGreen Building
Program
XX--
X
XXWisconsin GreenbuiltXBuilt Green Colorado
California Green Builder----Austin Green BuildingXXSeattle (King County)XGreen GlobesXXLEED
Certification Requirement
Comparison of Green Building Programs
Wisconsin GreenbuiltBuilt Green ColoradoCalifornia Green Builder
--Austin Green BuildingSeattle (King County)Green GlobesLEED
CertificationRequired for
Materials other thanWood
Green BuildingProgram
Comparison of Green Building Programs
X
Use of VinylDiscouraged
XXWisconsin GreenbuiltXBuilt Green ColoradoXCalifornia Green Builder--Austin Green BuildingXSeattle (King County)
Green GlobesXLEED
Use of BambooFlooring
RewardedGreen BuildingProgram
Comparison of Green Building Programs
XXX--X
X
PrescriptiveSystem REPreferableMaterials
Wisconsin GreenbuiltBuilt Green ColoradoCalifornia Green BuilderAustin Green BuildingSeattle (King County)
XGreen GlobesLEED
Bldg MaterialsAssessment Based
on LCA/LCIGreen BuildingProgram