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CALGCALGCALGreenCALGreen& &

ASHRAEASHRAE 189 1189 1ASHRAEASHRAE 189.1189.1

California’s new green code and the national green standard

January 13th, 2011Cole Roberts, P.E., LEED AP | ArupChristine Lee, LEED AP | ArupRoshan Mehdizadeh | Stanford University

The Purpose of Building CodesThe Purpose of Building Codes

International Building Code (USA) - 2006 edition

101.3 The purpose of this code is to establish the minimum requirements to safeguard the public

health, safety and general welfare through structural strength, means of egress facilities,

stability, sanitation, adequate light and ventilation, energy conservation, and safety to life

and property from fire and other hazards attributed to the built environment and to provide p p y f p

safety to fire fighters and emergency responders during emergency operations.

Big Picture in italics

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Credit: Adapted from Dave Eisenberg, Development Center for Appropriate Technology

The Purpose of Building Codes








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The Lens of Building Codes The Lens of Building Codes

Fire/SmokeFire/SmokeStructureEgressLight

V til tiVentilationHeat/Cooling

WaterWaste

Electricity & GasEnergy Efficiency

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Resource DepletionHealth

Fire/Smoke

Resource Depletion

Jobs

Health

EconomyFire/SmokeStructureEgressLight

V til ti

Biodiversity

Climate Change VentilationHeat/Cooling

WaterWaste

Food

Climate Change

Electricity & GasEnergy EfficiencyWell Being

F t

Security

CommunityFuture

GenerationsPolitical Unrest

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Possible Questions…Possible Questions…

Will this mean no more LEED certifications?

Does this mean everything is LEED certified?

How many LEED points do I get for CALGreen/189.1? What about for Tier 1 or 2?

Does this mean green building costs go up or go down!?

Where does CALGreen/189.1 apply and what’s the pp ydifference?

Who verifies performance?

Why do we need 3+ green building perspectives?!!!

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TopicsTopics

OverviewBackgroundCALGreenASHRAE Standard 189.1

CALGreen vs ASHRAE 189.1 ComparisonPublication jurisdiction and timelinePublication jurisdiction and timelinePublication sponsorship & developmentContent- Building siteBuilding site- Materials and resources- Water use- Energy consumption- Environmental quality- Commissioning and building operation

Takeaways, conclusions, and Q&A

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y

BackgroundBackground

Multiple regulatory bodies issuing publications on the design of high-performing buildings

CodesCodesStandardsRating SystemsDesign GuidesDesign Guides

Why ASHRAE 189.1 and CALGreen?Design guides and rating systems not written in code language. CALGreenand ASHRAE 189.1 were written so that local jurisdictions can adopt it to make the green building provisions mandatory.

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CALGreenCALGreen | Title 24, Part 11| Title 24, Part 11

What?Part of California Building Standards CodeMandatory requirements for new buildings in California (varies byMandatory requirements for new buildings in California (varies by Jurisdicton, HDC, DSA, OSHPD)Voluntary tiers (I & II) with more stringent requirements and supplemental language can be adopted by local jurisdictionslanguage can be adopted by local jurisdictions

When?Voluntary 2008 California Green Building Standards code went into effect A 2009August, 2009Mandatory CALGreen 2010 went into effect January 1st, 2011

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ASHRAEASHRAE Standard 189.1Standard 189.1

What:National standard intended for adoption into building codesApplies to all buildings except low-rise residential buildingsApplies to all buildings except low rise residential buildingsSimilar to other ASHRAE Standards and LEED

When?Published January 2010

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Where does LEED fit?Where does LEED fit?

1998 2010

LEED

1998 2010

ASHRAE 189.1

CALGreen

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Tiers vs. Third Party Systems

CALGreen Tiers not recommended for leadership standards

Tiers not yet definedImplementation will be inconsistentMost building departments not equipped for enforcementMost building departments not equipped for enforcement beyond traditional health & safety issues

Third-party rating systems offer:Better enforcement and quantificationRegional consistency for the building industryOngoing training programs for building professionalsOngoing training programs for building professionals

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SponsorshipSponsorship

LEED 189.1 CALGreenUSGBCU S Green Building Council

ASHRAEAmerican Society of Heating

BSCCalifornia Building StandardsU.S. Green Building Council American Society of Heating,

Refrigeration, and Air Conditioning Engineers

California Building Standards Commission

USGBCU.S. Green Building Council

HCDCalifornia Department of Housing and Community Developmentp

IESIlluminating Engineering Society

DSADivision of State Architect

OSHPDOffice of Statewide Health Planning and Development

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StructuresStructures

LEED 189.1 CALGreenPrerequisites and Credits Mandatory, Prescriptive /

Performance PathsMandatory, Prescriptive / Performance PathsPerformance Paths Performance Paths

Rating Levels corresponding to # points earned

Subject to jurisdictional adoption with or without amendments (code

Option of meeting Tier I/II by choosing set # of Electives (1 & 3 respectively)earned amendments (code

minimum).Electives (1 & 3 respectively)

Guidance Code Code

Performance Prescriptive Prescriptive

Contin al Updating-------------------------Continual Updating-------------------------

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Scope & JurisdictionScope & Jurisdiction

LEED 189.1 CALGreenResidential / Non-Residential / Neighborhood

All Except Low Rise Residential

Residential (non high rise) / Non ResidentialResidential / Neighborhood Residential Non Residential

Nationally Oriented Nationally Oriented State Oriented

GBCI certification Local jurisdiction code enforcement

Local jurisdiction code enforcement

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LEED Points ApproximatedLEED Points Approximated

708090

100110

Platinum

3040506070 CalGreen

189.1Certified

SilverGold

01020

M d tMandatoryTier 1 avg

Tier 2 avgContributing

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LEED points are only a LEED points are only a partial picture.partial picture.

How Green are the How Green are the Codes?Codes?

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Publication Content ComparisonPublication Content Comparison

Categories (generalized)Building SiteMaterials and ResourcesMaterials and ResourcesWater UseEnergy ConsumptionE i t l Q litEnvironmental QualityCommissioning and Building Operations

Approach to Category ComparisonApproach to Category ComparisonKey provisional differencesOverall content differences

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Building SiteBuilding Site

CALGreen does not have provisions for selecting sites close to rail or transit

CALGreen does not have provisions for selecting sites close to rail or transit

ASHRAE 189.1 does not address bicycles, alternative fuel vehicles or associated parking

ASHRAE 189.1 does not address bicycles, alternative fuel vehicles or associated parking CALGreen currently hasCALGreen currently hasp gp g CALGreen currently has

many sections regarding building site that are “reserved”

CALGreen currently has many sections regarding building site that are “reserved”

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Building SiteBuilding Site

Primary Differences between CALGreen and ASHRAE 189.1ASHRAE 189.1 is more of a stand-alone publication (at times referring to other standards and codes) than CALGreen which refers to other parts ofother standards and codes) than CALGreen, which refers to other parts of Title 24 (California Building Standards Code)CALGreen is currently missing a significant portion of the topics covered by ASHRAE 189 1by ASHRAE 189.1

Similarities between CALGreen and ASHRAE 189.1Due to sections of the Planning and Design section designated as g g g“Reserved”, there is currently little similarity between the code and standard

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Materials and ResourcesMaterials and Resources

ASHRAE 189.1 does not have provisions for reused materials, and CALGreen does not have mandatory provisions for reused materials

ASHRAE 189.1 does not have provisions for reused materials, and CALGreen does not have mandatory provisions for reused materials

CALGreen currently lacks mandatoryCALGreen currently lacks mandatorylacks mandatory materials provisions present in ASHRAE189.1 and LEED. These sections may be addressed by the BSC

lacks mandatory materials provisions present in ASHRAE189.1 and LEED. These sections may be addressed by the BSCat a later date in “reserved” section 5.405 Material Sources.

at a later date in “reserved” section 5.405 Material Sources.

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ASHRAE 189.1 has certified wood provisions. CALGreen will not address this until the next code cycle

ASHRAE 189.1 has certified wood provisions. CALGreen will not address this until the next code cycle

ASHRAE 189.1 has provisions (for the performance option) for a life ASHRAE 189.1 has provisions (for the performance option) for a life CALGreen currently

lacks mandatory LCACALGreen currently lacks mandatory LCAcycle assessment but CALGreen

only includes provisions for a LCAof materials assemblies as a voluntary measure

cycle assessment but CALGreenonly includes provisions for a LCAof materials assemblies as a voluntary measure

lacks mandatory LCAprovisions but may be addressed by the BSCat a later date in “reserved” section 5.409 Life Cycle

lacks mandatory LCAprovisions but may be addressed by the BSCat a later date in “reserved” section 5.409 Life Cycle

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yAssessment.

yAssessment.


Primary Differences between CALGreen and ASHRAE 189.1CALGreen currently lacks much of the materials provisions in its mandatory measures section (many of the provisions are voluntary)mandatory measures section (many of the provisions are voluntary)

Similarities between CALGreen and ASHRAE 189.1If the voluntary measures currently in CALGreen were to become mandatory, the materials provisions would be similar to those of ASHRAE189.1 and LEED

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Water UseWater Use

ASHRAE 189.1 addresses water use in HVAC systems, but both LEEDand CALGreen do not

ASHRAE 189.1 addresses water use in HVAC systems, but both LEEDand CALGreen do notand CALGreen do not.and CALGreen do not.

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Water UseWater Use

Primary Differences between CALGreen and ASHRAE 189.1The most significant difference is that ASHRAE 189.1 addresses the water consumption of HVAC systems and CALGreen does notconsumption of HVAC systems and CALGreen does notCALGreen specifies a certain potable water use reduction but ASHRAE189.1 does not (instead specifies fixture flow limitations)

Similarities between CALGreen and ASHRAE 189.1In terms of provisions addressing irrigation systems and plumbing fixtures, CALGreen and ASHRAE 189.1 are similar

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Energy ConsumptionEnergy Consumption

CALGreen simply refers to Title 24, Part 6, the energy

CALGreen simply refers to Title 24, Part 6, the energy

189.1 supercedesmany parts of 90 1189.1 supercedesmany parts of 90 1 , gy

code, and indicates that a green building should achieve at least a 15% reduction in energy

( hi h i h

, gycode, and indicates that a green building should achieve at least a 15% reduction in energy

( hi h i h

many parts of 90.1 and outperforms the energy standard by ~25-30%.

many parts of 90.1 and outperforms the energy standard by ~25-30%.189.1 requires on-

site renewable generation of no less

189.1 requires on-site renewable generation of no less

usage (which is what voluntary Tier 1 requires)

usage (which is what voluntary Tier 1 requires)

gthan 6 kbtu/ft2 (approx. 5-15%)

gthan 6 kbtu/ft2 (approx. 5-15%)

CALG l tCALG l t

189.1 requires EnergyStarequipment

189.1 requires EnergyStarequipment CALGreen voluntary

measures address people movement, EnergyStarappliances, and thermal bridging

CALGreen voluntary measures address people movement, EnergyStarappliances, and thermal bridging

equipmentequipment

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thermal bridging.thermal bridging.

Energy ConsumptionEnergy Consumption Green power purchase requirements (as an exception to renewable energy on

Green power purchase requirements (as an exception to renewable energy onrenewable energy on-site) are significant (~20kbtu/sf/yr)

renewable energy on-site) are significant (~20kbtu/sf/yr)

189.1 provides detailed guidance and requirements for metering resource use.

189.1 provides detailed guidance and requirements for metering resource use.

189.1 sets a new 189.1 sets a new

Demand response is addressed as a voluntary measure

Demand response is addressed as a voluntary measure

benchmark for demand reduction.benchmark for demand reduction.

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voluntary measure with no required performance threshold.

voluntary measure with no required performance threshold.

Energy ConsumptionEnergy Consumption

Primary Differences between CALGreen and ASHRAE 189.1Reference energy performance (CALGreen) vs improved energy performance (189 1)performance (189.1)Inclusiveness of Non-regulated loads (189.1)Energy (CALGreen) vs Energy Cost/CO2e/Energy Demand (189.1)Renewable Energy Requirement (189 1)Renewable Energy Requirement (189.1)M&V Requirement (189.1)Green Power Requirement (189.1)El /E l & Th l B id i (CALG )Elevators/Escalators & Thermal Bridging (CALGreen)

Similarities between CALGreen and ASHRAE 189 1Similarities between CALGreen and ASHRAE 189.1As CALGreen Tiers are adopted, it becomes similar to 189.1.

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Environmental QualityEnvironmental Quality

Neither 189.1 or CALGreen adopts the increased ventilation language of LEED.

Neither 189.1 or CALGreen adopts the increased ventilation language of LEED.of LEED.of LEED.

189.1 effectively matches the LEED requirements and also restricts construction vehicle idling

189.1 effectively matches the LEED requirements and also restricts construction vehicle idling

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idling.idling.


ASHRAE 189.1 and CALGreen IEQ material provisions are similar

ASHRAE 189.1 and CALGreen IEQ material provisions are similarsimilarsimilar

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These environmental quality provisions reside in the voluntary

These environmental quality provisions reside in the voluntaryvoluntary measures of CALGreen. Mandatory measures are limited.

voluntary measures of CALGreen. Mandatory measures are limited.

CALGreen and 189.1 have acoustical provisions

CALGreen and 189.1 have acoustical provisionspp

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These provisions are i il i t i

These provisions are i il i t isimilar in stringency,

though less than LEED.similar in stringency, though less than LEED.

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Primary Differences between CALGreen and ASHRAE 189.1Mandatory CALGreen measures are significantly less stringent than 189.1, though voluntary measures are fairly similarthough voluntary measures are fairly similar.189.1 addresses acoustical performance in building interiors (wall/floor/ceiling assemblies).

Similarities between CALGreen and ASHRAE 189.1Material and ventilation provisions are fairly similar.

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Commissioning and Building OperationCommissioning and Building Operation

ASHRAE 189.1 lists extensive system

ASHRAE 189.1 lists extensive system ycommissioningy

commissioning

CALGreen does not require system measurement and verification of energy use after occupancy as

CALGreen does not require system measurement and verification of energy use after occupancy as

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p ya mandatory measure

p ya mandatory measure

Commissioning and Building OperationCommissioning and Building Operation

Primary Differences between CALGreen and ASHRAE 189.1ASHRAE 189.1 lists more systems for commissioning when compared to CALGreenCALGreenUnlike ASHRAE 189.1 and LEED, CALGreen does not require post-occupancy measurement and verification as a mandatory measure

Similarities between CALGreen and ASHRAE 189.1Commissioning and maintenance documentation

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CALGreenCALGreen vsvs ASHRAE 189.1 TakeawaysASHRAE 189.1 Takeaways

Key Differences Applicability (California vs National)Sub-Applicability (BSC DSA OSHPD HCD etc )Sub-Applicability (BSC, DSA, OSHPD, HCD, etc.)Tier & Amendment Effect (one code with many variants)LEED Ordinances Remain189 1 R l ti hi t I CC (j i di ti l li ti )189.1 Relationship to IgCC (jurisdictional compliance option)

Concluding RemarksDive InDive InProcess of Change in Constrained EconomyLEED just got cheaper

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A Lot to Think About:A Lot to Think About:

ASHRAE 90.1 – 2004, 2007, and 2010

IECC 2006, 2009, and 2012

LEED NC 2.2 and 2009

ASHRAE 189.1 (green bldg std), published Jan 2010

IgCC 2010 (v1.0 out March 2010, final Aug 2010).IgCC 2010 (v1.0 out March 2010, final Aug 2010).

CALGreen (January 2011)

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101.3 The purpose of building professionals is to minimum requirements to enable public






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ResourcesResources

CALGreen via the Building Standards Commission: http://www bsc ca gov/CALGreen/default htmhttp://www.bsc.ca.gov/CALGreen/default.htm

Standard 189.1: http://www.ashrae.org/greenstandard

USGBC-NCC/Alameda County: http://www.usgbc-ncc.org

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