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The International Green Construction
Code: Vision to Action July 20, 2012
International Green Construction Code
History of Codes
The Code of Hammurabi King Hammurabi of Babylon
ca. 1790 B.C.
“If a builder builds a house for
someone, and does not
construct it properly, and the
house which he built falls in and
kills its owner, then the builder
shall be put to death.”
History of Codes
Why is a Green Code Needed?
Buildings fundamentally have an impact on people's lives,
economic well being.
In the United States, residential and commercial buildings
together use more energy and emit more carbon dioxide than
either the industrial or transportation section.
Energy-efficient buildings offer both tangible and intangible energy,
economic, and environmental benefits.
Energy efficient buildings can also create economic opportunities for
business and industry by promoting new energy efficient technologies.
Why is a Green Code Needed?
IgCC is intended to reduce the negative impacts of the built environment on the natural environment.
Resource Conservation
Land Use
Reducing Waste
Reducing Pollutants
Focus on Performance and
Accountability
IgCC Subject Areas
ENERGY
SAVINGS
30%
CARBON
SAVINGS
35%
WATER
USE
SAVINGS
30-50%
WASTE
COST
SAVINGS
50-90%
1. Energy use efficiency
2. The buildings impact on environment (Greenhouse Gas)
3. Water use efficiency
4. Materials and resource use
5. Indoor environment quality
6. Site design
7. Sustainable building owner/facility management education
8. Existing buildings
WHAT IS THE IGCC?
An Adoptable, Useable and Enforceable code
Intended to reduce the negative impacts of the built environment on the natural environment
Addresses
Conservation of:
Natural resources
Materials
Energy
Water
Air & indoor environmental quality
Owner education
SCOPE AND INTENT
Consistent and coordinated with the ICC family of Codes & Standards
Applicable to the construction of
New and existing buildings
All buildings other than residential buildings under the scope of the IRC
Intended to be enforced primarily by building officials – a system already in place nation wide
Intended to promote green building into everyday practice
IGCC CONCEPTS
The IgCC is not a rating system, nor is it intended to replace them.
The IgCC is code which is intended to be adopted on mandatory basis.
Unlike most rating systems, the IgCC primarily consists of minimum mandatory requirements, just as other I-Codes.
How should we compare green and sustainable codes, standards, rating systems and programs?
Building by building?
- Or -
By their ability to be adopted on a mandatory basis in all regions and potential overall reduction of negative environmental impacts?
What should the intent of a green code or program be?
To make a few buildings very green?
- Or -
To have as large a positive impact and as little a negative impact as possible on the total natural environment?
IgCC Concepts
CODE VS STANDARD VS RATING SYSTEM
IGCC
ASHRAE 189.1
LEED
Why codify “best practices”?
The push-pull between codes & standards
The push-pull between codes & standards
What is an Overlay Code ?
One of the values of the IgCC is that it is designed to coordinate and integrate with the existing I-Codes.
The IgCC offers various tiers of jurisdiction to apply to commercial and high performance buildings.
In a manner that incorporates the heath and safety features of the other I-Codes.
IgCC Development Concepts
Adoptable…Usable…Enforceable
Works as an overlay to the ICC code family
Minimum & advanced levels of “green”
Performance, prescriptive and outcome-based paths
Accounts for local conditions (flood areas, greenfield sites, light pollution, etc.)
Designed with local, state & federal law in mind
IgCC Development Concepts
Adoptable…Usable…Enforceable
IgCC 101.3 Intent. The purpose of this code is to safeguard the
environment, public health, safety and general welfare through the
establishment of requirements to reduce the negative potential
impacts and increase the positive potential impacts of the built
environment on the natural environment and building occupants,
by means of minimum requirements related to:
•conservation of natural resources,
• materials and energy;
•the employment of renewable energy technologies,
•indoor and outdoor air quality;
• and building operations and maintenance.
Content
Chapter 1: Administration
Chapter 2: Definitions
Chapter 3: Jurisdictional Requirements & Project Electives
Chapter 4: Site Development & Land Use
Chapter 5: Material Resource Conservation & Efficiency
Chapter 6: Energy Conservation, Efficiency & Atmospheric Quality
Chapter 7: Water Resource Conservation & Efficiency
Chapter 8: Indoor Environmental Quality & Comfort
Chapter 9: Commissioning, Operation & Maintenance
Chapter 10: Existing Buildings
Chapter 11: Existing Building Site Development
Appendix A: Optional Ordinance
Appendix B: Greenhouse Gas Reductions In Existing Buildings
Appendix C: Sustainability Measures
A Few Highlights – Project Electives
Focus is on adoptability through flexibility of the document to coordinate with the local jurisdictions environmental goals and specific regional geography. Four (4) major components of Ch 3: 1. Jurisdictional Requirements. 2. Option to adopt ASHRAE Standard 189.1 (Replaces Chapters 4 through 12)
3. Project Electives. 4. Whole Building Life Cycle Assessment FLEXIBILITY
allows adopting jurisdiction to define priorities
Jurisdictional Requirements
Project Electives
CHAPTER 3
Preservation of Natural Resources
Protection by area: e.g. floodplains, conservation areas, park lands, agricultural lands, greenfields.
Site design and development requirements:
Pre-design site inventory and assessment
Stormwater management,
Landscape irrigation systems,
Management of vegetation and soils
Site waste management plan.
Local Jurisdictions
Control
Chapter 4
Site Development
and Land Use
Chapter 4 Continued,
Transportation impact.
Walkways and bicycle paths
Changing and shower facilities
Bicycle parking and storage
Vehicle parking
Heat island mitigation.
Site hardscape,Roof coverings
Light pollution mitigation.
Detailed site development requirements.
Subsurface graywater irrigation systems
Vegetation and soil protection
Landscape, soil and water quality protection plan
A Few Highlights – Materials
MATERIAL RESOURCE CONSERVATION & EFFICIENCY
Material Selection Criteria
Materials and their properties.
55% of materials used in every project must be any
combination of the following
Used,
Recycled,
recycleabe,
Bio-based or
Indigenous.
Service Life
Whole Building Life Cycle Assessment
CHAPTER 5
A Few Highlights – Energy
ENERGY CONSERVATION AND EFFICIENCY
Buildings > 25,000 sq. ft. must use the
performance based compliance path Uses Zero Energy Performance Index (zEPI) concept
– encourages use of renewable energy, cogeneration
and zero net energy buildings.
Buildings < 25,000 sq. ft. may use any of
the following : •Performance based path
•Prescriptive based path
•Energy Use Intensity (EUI) path Must be in top 10% of EPA’s Target Finder
Program
Outcome based path Estimated energy use relative to actual energy
use, based on a 12 month period after C of O.
CHAPTER 6
CHAPTER 7
Water Resource, Conservation &
Efficiency
Plumbing systems and conservation measures.
Landscaping and irrigation – addressed in Chapter 4.
Specific water savings measures.
Use of grey water, rain collection and storage.
A Few Highlights – Commissioning
COMMISSIONING and O & M
• Commissioning Plan
• Ends at Certificate of Occupancy
• Owner or tenant post occupancy operations.
• Building maintenance.
• Education of building users.
CHAPTER 9
Loosely based on the provisions of the
IBC/IEBC for existing buildings:
For alterations/renovations: whatever is
changed must meet current IgCC
requirements.
Unaltered components can remain as
they are.
Additions are treated much like new
construction: applicable requirements of
the IgCC must be satisfied.
26
CHAPTER 10
Existing Buildings
Adoption Process - IgCC
ICC Development Schedule
Code Development Hearing May 2011
Public Comment June-Aug 2011
Final Action Hearing Nov 2011
Publication March 2012
Adoption in Washington State?
Will require legislation
Statewide or Local Adoption?
Possible tool for incentive programs
Adoption by City of Olympia?
City Council Land Use and Environment
Committee will take up this issue on their
August 23rd meeting
• Additional Resources
– ICC Website
www.iccsafe.org/cs/igcc
- IGCC Toolkit:
http://www.aia.org/igcc
– Social Media Outlets
• Codes & Standards
Community on
KnowledgeNet (via
http://network.aia.org)
• Codes & Standards Group
on LinkedIn
• Codes & Standards on
Twitter: @AIACodes
Tom Hill Building Official , City of Olympia
THANK YOU……… Questions?????
