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Development
Implementation
Practical use
Standard 189.1
What is Standard 189.1?
A design standard not a rating system
Developed in ANSI model code language
Applies to all buildings except low-rise residential (same as ASHRAE/IES Standard 90.1)
Optional compliance path to the International Green Construction Code
Standard 189.1 provides
High-performance green buildings minimum requirements:
Mandatory criteria
PLUS
Performance options
Prescriptive options
Evidence based requirements that complement green building rating programs
Sponsors and Project Committee
Sponsor and co-sponsors:
ASHRAE
USGBC (U.S. Green Building Council)
IES (Illuminating Engineering Society)
Project committee: 35+ voting members; variety of disciplines, industries & organizations
The Green Standard
Standard 189.1-2011:
Standard for the Design of High-Performance
Green Buildings
Standard 189.1 Building Blocks
“ASHRAE 189.1 is a compliance option of the IGCC "
International Green Construction Code (IGCC)
§1.0 through §4.0 cover the Purpose, Scope, Definitions and Administration
§5.0 through §10 are the working sections
Standard 189.1 Sections
To provide minimum requirement for:
Siting
Design
Construction
Planning for operation
….of high performance green buildings.
§1.o0 PURPOSE
2.1 Provides minimum criteria for:
a. New
1. Buildings
2. Portions of buildings or
3. Systems & equipment in existing buildings
b. Site sustainability, water use efficiency, energy efficiency, indoor environmental quality (IEQ), atmospheric impact, and resources.
2.2 Does not cover single family dwellings or non water or energy use buildings.
2.3 Does not supersede any health & safety requirements
§2.0 Scope
§3.0 Definitions, Abbreviationsand Acronyms
4.1 Buildings shall comply with mandatory requirements in Sections 5 through 11
4.1.1 Normative appendices are mandatory
4.1.2 Informative appendices offer further information
§4.0 Administration and Enforcement
Compliance Paths
+
+
(simple option, very few calculations)
(more options, but more flexible)
Mandatory Provisions
Allowable sites with limitations for Greenfield, Brownfield, or Greyfield sites
Mitigation of heat island effect including:
% hardscape and solar reflectance index (SRI) as well as
natural vegetation and shading by structures
§5.0 Site Sustainability
Mandatory Provisions (cont)
Light pollution reduction includes:
Backlight, Uplight and Glare (all tabularized)
Invasive plants removal
Mitigation of transportation impacts
Connections of primary building entrances to pedestrian walkway for access to a public way or transit stop
§5.0 Site Sustainability
Prescriptive Option
-Minimum 40% of site area shall have effective
pervious area.
-20% of area shall be maintained as Greenfield
Performance Option
- For existing buildings 20 % of average rainfall to be managed.
- For new buildings on Greenfield or Brownfield sites 40% of rainfall to be managed.
-For all other sites manage 50% of rainfall
§5.0 Site Sustainability
Mandatory Provisions
Landscape Design: bio-diverse & adapted plantings for 60% of landscape
Irrigation Design: hydrozoning
Controls: smart irrigation controllers
Building Water Use: plumbing fixtures and appliances to meet standards indicated
HVAC systems: efficient drift eliminators on cooling towers and condensate collection as indicated
Consumption measurement: all measured devices monitored with data storage requirements for retrieval
§6.0 Water Use Efficiency
Prescriptive Option
Building Water Use Cooling tower and blow down rates provided
High efficiency Energy Star cooking equipment
Only air cooled refrigeration equipment
Performance Option
Site water reduction: <35%potable water for irrigation
Proposed building use: < [mandatory + prescriptive]
§6.0 Water Use Efficiency
Mandatory Requirements
§7.3.2 on site renewable provisions for future installation
§7.3.3 energy consumption management and recording
Prescriptive Options
Requirements in 189.1 which supersede 90.1
Requirements for building envelope, roofs and solar heat gain coefficient (SHCG)
§ 7.0 Energy Efficiency
§7.4.3 HVAC
Based on Standard 90.1, but modified to gain improved energy performance over minimum code standards
Demand control ventilation (DCV) for occupied spaces. Lower occupancy threshold
Economizers shown for equipment size and climate zone
Restricts amount of reheated or re-cooled air
Exceptions allowed from Standard 90.1 § 6.5.2.1
§ 7.0 Energy Efficiency (cont)
§ 7.4.6 Lighting
Lighting power allowances are as per Std. 90.1 multiplied by the data in the table in this section
Occupancy sensors are to be installed to reduce power to <50% for
Hotel, motel hallways
Storage stack aisles
Library stacks
Exterior lighting control is based on time of day use
§ 7.4.7 Other Equipment
High efficiency motors, appliances and Energy rated products
§7.0 Energy Efficiency (cont)
§ 7.5 Performance Based Options
Demonstrate equivalent performance
In both energy cost and CO2 equivalent
Use Prescriptive path for energy, plus relevant portions of Section 5, 6 and 8.
Refer to Normative Appendix D
“Performance Option for Energy Efficiency”
… you can propose an alterntive plan – which must be < (Mandatory + Prescriptive Path)
§7.0 Energy Efficiency (cont)
Key Items
Outdoor Airflow
Tobacco Smoke Control
Outdoor Air Monitoring
Filtration and Air Cleaning
Daylighting
Thermal Comfort
Acoustics
Vibration
§8.0 Indoor Environmental Quality (IEQ)
Mandatory Construction waste management
Diverts 50% of non-hazardous waste and demolition debris Limits total waste generated per floor
Limits fire suppression systems to include no ozone depleting substances (CFCs, HCFCs, Halons)
Prescriptive Option Reduces impact materials encouraging:
recycled, regional, bio-based
Performance Option LCA per ISO 14044 must include land use, resource use,
climate change, ozone layer depletion, human health, ecotoxicity, smog, acidification, eutrophication
Must show 5% gain in at least two categories
§9.0 Building’s Impact on the Atmosphere, Materials and Resources
This is the only section where there are only mandatory
requirements
Mandatory CONSTRUCTION requirements include: Protect materials that might absorb water
Install no materials with visual bio-growth
Place vehicle staging areas away from air intakes, hospitals, schools, residences, etc. that may adjoin the project
§10.0 Construction and Plan for Building Operation
Mandatory OPERATION requirements include : Site sustainability
Water use efficiency
Energy efficiency
Indoor environmental quality
… and Commissioning to assure verification of construction of these items as specified earlier in the Standard
In addition to:
Maintenance
Service Life
Transportation Management
§10.0 Construction and Plan for Building Operation (cont)
Site Sustainability
Maintenance procedures for healthy vegetation growth
Water Use Efficiency
Measurement and verification of water use benchmarked against criteria like Energy Star Portfolio Manager
Assessment of water use efficiency
§10.0 Construction and Plan for Building Operation (c0nt)
Energy Use Efficiency
Initial measurement & verification using devices as specified in § 7.0
Procedures to track and assess energy:
Hourly load profile
Monthly average daily load profile
Monthly and annual energy use
Monthly and annual peak demand
§10.0 Construction and Plan for Building Operation (cont)
Indoor Environmental Air Quality
Outdoor Airflow verified by: Handheld devices or permanent stations
Procedures to react if 15% lower than minimum specified rates
Indoor Air Quality Air cleaning equipment in restricted areas
Biennial monitoring through testing, occupant perception or complaint/response report
Green cleaning materials and methods
§10.0 Construction and Plan for Building Operation (cont)
Maintenance
Standard 180 for planning
Documentation of plan via electronic storage and maintenance manuals
Service Life
Maintenance and repair on structure, envelope and hardscape
§10.0 Construction and Plan for Building Operation (cont)
Transportation
Preferred parking for car pools etc.
Copy of plan distributed to all building occupants
Access to emergency transportation
If leased space parking not in the lease rate
§10.0 Construction and Plan for Building Operation (cont)
Requires participation of all parties through:
Commissioning as specified in Guideline O including:
Well developed Owners Project Requirements (OPR)
Leads to Integrated Building Design (IDB) as an ideal approach to affordable Green Buildings
What are the Practicalities of Standard 189.1 ?
Standard 189.1-2011 raises the bar for the design of high performance Green Buildings
The many players that contributed to developing this standard believe that it provides a realistic platform for responsible design
CONCLUSION
