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Progress Report on ASHRAE/USGBC/IESNA Std 189: High-Performance Green Buildings John Hogan, A.I.A., P.E. Senior Code Development Analyst Seattle Department of Planning and Development P.O. Box 34019 Seattle, Washington 98124-4019 Creating a Green Building Roadmap for Houston

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Progress Report on ASHRAE/USGBC/IESNA Std 189: High-Performance Green Buildings

John Hogan, A.I.A., P.E.

Senior Code Development Analyst

Seattle Department of Planning and Development

P.O. Box 34019

Seattle, Washington 98124-4019

Creating a Green Building Roadmap for Houston

City of Houston and Clinton Climate Initiative

Houston TX, 10 May 2007


Scope & intent: sponsors, topic areas, process, challenges, compliance

Coordination with national initiatives: U.S. Federal agencies, AIA, Natl Conf of Mayor

Outline of Standard 189: chapter outline, mandatory vs. prescriptive vs. performance

Overview of criteria

Next steps

STANDARD 189:Sponsors & Scope

Lead sponsor and cosponsors:- ASHRAE, USGBC, and IESNA

Five topic areas:- sustainable sites, - water use efficiency, - energy efficiency, - impact on atmosphere, materials & resources, - indoor environmental quality (IEQ)

STANDARD 189:Intent

What Standard 189 is:- a standard: “Standard for theDesign of High-Performance, Green Buildings Except Low-Rise Residential Buildings”(title uses the word “green” to convey intent,there is no claim to sustainability)

What Standard 189 is not:- not a design guide- not a rating system

STANDARD 189:Process and Challenges

Process: consensus process

Challenges:- to identify standards to reference (not programs)(LEED references a number of programs)- some standards only provide rating procedures, others provide procedures and pass/fail criteria(need to decide on how high to set the bar where criteria are not specified)- identify regulations where standards do not exist

STANDARD 189:Compliance

Compliance goals:- a document that can be implemented and enforced by a wide variety of users, from those on the leading edge to those with little knowledge

Mandatory provisions:(majority of standard)- essential criteria, can not be traded off

Prescriptive/Performance options:- Prescriptive: simple option, conveys the intent - Performance: allows innovation

STANDARD 189:Coordination w/ National Initiatives

U.S. Federal agencies MOU (E.O. 13423):reduce energy cost by 30% based on 90.1-2004use a minimum of 20% less waterlow-pollutant materials, 10% recycled

AIA (American Institute of Architects): 50% reduction of fossil fuels

National Conference of Mayors, 2030 initiative:buildings to be carbon neutral by 203060% in 2010, 70% 2015, 80% 2020, 90% 2025

STANDARD 189 SCHEDULE:Meetings to Date

SPC 189 preliminary meeting:26 June 2006, ASHRAE Annual Meeting

SPC 189 meetings for drafting of standard:29-30 August 2006 16-17 October 2006 11-12 December 200629-30 January 2007, ASHRAE Winter Mtg 1-2 March 2007 12-13 April 2007 (vote for public review)

STANDARD 189:Introductory Sections 1-4

1: Purpose

2: Scope

3: Definitions, Abbreviations, and Acronyms

4: Administration and Enforcement

STANDARD 189:General Structure for Sections 5-10

x.1: Scope

x.2: Compliance - comply with: x.3 Mandatory Provisions, and x.6 Submittals, and eitherx.4, Prescriptive or x.5 Performance

x.3: Mandatory

x.4: Prescriptive

x.5: Performance

x.6: Submittals

STANDARD 189:5. Sustainable Sites

5.3: Mandatory 5.3.1 Site Selection5.3.2 Site Development5.3.3 Mitigation of Heat Island Effect5.3.4 Reduction of Light Pollution

5.4: Prescriptive and 5.5: Performanceno requirements

STANDARD 189:5. Sustainable Sites (excerpts)

5.3.1 Site Selection: allowable sites- within existing buildings, brownfield, greyfield,- greenfield (less than 30% impervious surfaces)< 1/2 mi to: transit, or 10 basic services, or residential w/density >10 units/acre

5.3.2 Site Development- > 40% of site to be effective pervious surface(vegetated, green roof, porous/permeable paver)- reductions allowed for rainfall reuse on site

STANDARD 189:6. Water Use Efficiency

6.3: Mandatory 6.3.1 Site Water Use Reduction6.3.2 Building Water Use Reduction6.3.3 Water Metering

6.4: Prescriptive and 6.5: Performancex.1 Site Water Use Reductionx.2 Building Water Use Reduction

STANDARD 189:6. Water Use Efficiency (excerpts)

6.3.1 Site Water Use Reduction (mandatory for all) - 60% of improved landscape to be bio-diverse plantings, hydrozoning, smart controllers (evapotranspiration)

6.4.1 Site Water Use Reduction (prescriptive option)- a maximum of 1/3 of the improved landscape to be irrigated with potable water

6.5.1 Site Water Use Reduction (performance option)- potable water consumption for irrigation of improved landscape < 35% of baseline evapotranspiration

STANDARD 189:6. Water Use Efficiency (excerpts)

6.3.2 Building Water Use Reduction (mandatory for all) - plumbing fixtures generally 20% lower than EPAct- clothes washers & dishwashers to meet water factor (WF)- once through cooling prohibited for HVAC systems

6.4.2 Building Water Use Reduction (prescriptive option)- criteria for cooling towers, food service, medical labs- fountains to use on-site sources of water

6.5.2 Building Water Use Reduction (performance option)- equal or less than mandatory plus prescriptive

STANDARD 189:7. Energy Efficiency

7.3: Mandatory 7.3.1 General7.3.2 Energy Star Equipment and Appliances7.3.3 On-site Renewable Energy Power Systems7.3.4 Energy Metering

7.4: Prescriptive and 7.5: Performance7.4.x provides detailed component breakdown7.5.x provides comprehensive approaches

STANDARD 189:7. Energy Efficiency

7.4: Prescriptive 7.4.1 General Comprehensive Prescriptive Req.7.4.2 Building Envelope 7.4.3 Heating, Ventilating and Air Conditioning 7.4.4 Service Water Heating 7.4.5 Power 7.4.6 Lighting 7.4.7 Other Equipment 7.4.8 Energy Cost Budget

STANDARD 189:7. Energy Efficiency

7.5: Performance7.5.1 Gen’l Comprehensive Performance Req.7.5.2 Annual Energy Cost7.5.3 Annual Carbon Dioxide Equivalent

STANDARD 189:7. Energy Efficiency (mandatory)

7.3.1 General- mandatory parts of ASHRAE/IESNA Std 90.1

7.3.2 Energy Star Equipment and Appliances- comply w/almost all Energy Star categories (40+)

7.3.3 On-site Renewable Energy Power Systems- building projects to have on-site renewable power systems with a peak electrical generating capacity > 1.0% of the electrical service load- exception for 5% energy cost + 5% CO2e savings

STANDARD 189:7. Energy Efficiency (prescriptive)

7.4.1 General- ASHRAE/IESNA Standard 90.1 as modified

7.4.2 Building Envelope- more insulation and better windows, CZ-2: roof: R-25 continuous insulation, wall, steel-stud: R-13 + R-5 cont.insulation, wood-stud: R-13 + R-3.8 cont.insulation, windows: U-0.75 (double-glazed), SHGC-0.25- windows to have overhang (0.5 projection factor)- solar gain via east/west windows < north/south

STANDARD 189:7. Energy Efficiency (prescriptive)

7.4.3 Heating, Ventilating, and Air-Conditioning- higher equipment efficiencies (CEE Tier II)- more economizer cycle (outside air for cooling)- more energy recovery, more pipe/duct insulation- fan power to be 10% less, piping pressure limits- unoccupied hotel/motel rooms w/ auto-shutoff

7.4.6 Lighting - lighting power allowances to be 10% lower- better controls: occupancy sensors, photosensors for lighting in daylight zones

STANDARD 189:7. Energy Efficiency (performance)

7.5.1 General- must comply with both 7.5.2 and 7.5.3

7.5.2 Annual Energy Cost- < mandatory provisions + prescriptive optioncost used to combine fossil fuel and electric energy, but results may be skewed by demand charges

7.5.2 Annual Carbon Dioxide Equivalent (CO2e)- < mandatory provisions + prescriptive optioninclusion of CO2e to assess environmental impactfactors based on U.S. national averages

STANDARD 189:8. Building’s Impact on Atmosphere, Materials, Resources

8.3: Mandatory 8.3.1 Construction Waste Management8.3.2 Wood Products8.3.3 Refrigerants8.3.4 Storage of Recyclables & Discarded G’ds

8.4: Prescriptive and 8.5: Performance8.4.1 Reduced Impact Materials8.5.1 Life Cycle Assessment

STANDARD 189:8. Building’s Impact on Atmosphere, Materials, Resources

8.3.1 Construction Waste Management- divert 50% of construction debris

8.3.3 Refrigerants- no use of CFC-based refrigerants

8.3.4 Storage of Recyclables & Discarded Goods- provide areas for recyclables, reusable goods, and recycling of fluorescent/HID lamps and ballasts

STANDARD 189:8. Building’s Impact on Atmosphere, Materials, Resources

8.4.1 Reduced Impact Materials (prescriptive):comply with one of the following- recycled content:postconsumer plus ½ preconsumer > 10%- regionally extracted, processed and manufactured: regional materials > 15% building material cost - biobased products:biobased materials > 5% building material cost

STANDARD 189:8. Building’s Impact on Atmosphere, Materials, Resources

8.5.1 Life Cycle Assessment (performance)- perform a life cycle assessment per ISO 14044- LCI must include operating energy consumption- LCA must include all of these impact categories: land use, resource use, climate change, ozone layer depletion, human health effects, ecotoxicity, smog, acidification, eutrophication, and solid waste- show 5% gain in two categories for the building

STANDARD 189:9. Indoor Environmental Quality

9.3: Mandatory 9.3.1 Minimum Indoor Air Quality9.3.2 Environmental Tobacco Smoke Control9.3.3 Outdoor Air Delivery Monitoring9.3.4 Thermal Comfort9.3.5 Building Entrances9.3.6 Acoustical Control9.3.7 Daylighting by Skylights

9.4 Prescriptive & 9.5 Performance: x.1 Daylighting, x.2 Low-Emitting Materials

STANDARD 189:9. Indoor Environmental Quality

9.3.1 Minimum Indoor Air Quality- ASHRAE Std 62.1 + 30% for office & classrooms

9.3.2 Environmental Tobacco Smoke- smoking not allowed inside the building

9.3.3 Outdoor Air Delivery Monitoring- all spaces (mech. & nat.) to have CO2 monitoring

9.3.4 Thermal Comfort- comply with ASHRAE Standard 55

9.3.6 Acoustical Control- STC requirements for exterior sound, not interior

STANDARD 189:9. Indoor Environmental Quality

9.3.7 Daylighting by Toplighting (mandatory)- for all large spaces > 20,000 ft2

9.4.1 Daylighting by Sidelighting (prescriptive)- for office & classrooms: minimum effective aperture of 0.10 (VT x % window area) for north/east/south façade (no min. for west)

9.5.1 Daylighting by Sidelighting (performance)- for office & classrooms: show 30 fc on work surfaces w/ physical model or simulation - no direct sun on workplane

STANDARD 189:9. Indoor Environmental Quality

9.4.2 Low Emitting Materials (prescriptive)- adhesive/sealants: SCAQMD 1168, GS-36- paint/coatings: GS-11, SCAQMD 1168- floor coverings: CA 01350, SCS-EC10 - composite wood: no added urea-formaldehyde (no standard, but “Exterior” grade acceptable)

9.5.2 Low Emitting Materials (performance)- all spaces within the building to be modeled for IAQ concentration per California 01350

STANDARD 189:10. Construction and Operation Plans

10.3: Mandatory 10.3.1 Building Project Commissioning10.3.2 Building Acceptance Testing10.3.3 Measurement and Verification Plan10.3.4 Energy Use Reporting10.3.5 Durability Plan10.3.6 Transportation Management Plan10.3.7 Erosion and Sediment Control Plan10.3.8 Indoor Air Quality Construction Plan10.3.9 Construction

No Prescriptive or Performance

STANDARD 189:10. Construction and Operation Plans

10.2 Compliance: prior to final cert. of occupancy

10.3.1 Building Project Commissioning & 10.3.2 Building Acceptance Testing- for all, but less for projects < 5,000 ft2

10.3.3 Measurement and Verification Plan- assess water/energy/etc. after occupancy

10.3.4 Energy Use Reporting- expand database of actual energy consumption

10.3.5, 10.3.6, 10.3.7, 10.3.8, 10.3.9 Other Plans- provide continuity of intent after design

STANDARD 189:Normative Appendices

11: References

Appendix A: Building Envelope Tables

Appendix B: Continuous Air Barrier

Appendix C: HVAC Equipment Efficiency

Appendix D: Space Contaminant Concentration

STANDARD 189:Informative Appendices

Appendix E: Informative References

Appendix F: Integrated Design

Appendix G: Water Use Baseline

Appendix H: Global Warming Potential

Appendix I: Sample Forms for Chapter 8

Appendix J: Sample Durability Plan


Status reports:20 April 2007, ASTM Sustainability Symposium3 May 2007, AIA National Convention

ASHRAE, USGBC, IESNA:May 2007 approval for public review

Public review (tentative dates):May-June-July 2007

Further information on ASHRAE, then follow “Standards”

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