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Southeastern Regional Building Commissioner’s Association. Overview of the International Green Construction Code (IgCC) Doug Connell International Code Council September 2011. An Adoptable, Useable and Enforceable code
Overview of the International Green Construction Code (IgCC)
International Code Council
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 fewbuildingsvery green?
- Or -
To have as largeapositive impact and as little anegative impact as possible on the total natural environment? Not just local, not just the U.S., but the entire planet.
A technique to evaluate the relevant energy and material consumed and environmental emissions associated with the entire life of a building, product, process, material, component, assembly, activity or service.
Chapter 3 is unique in that the focus will be on stringency of the entire document as adopted by the jurisdiction.
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 IGCC Chapters 4 through 12)
3. Project Electives.
4. Whole Building Life Cycle Assessment Project Elective.
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
Landscape irrigation systems,
Management of vegetation and soils
Site waste management plan.
Walkways and bicycle paths
Changing and shower facilities
Bicycle parking and storage
Heat island mitigation.
Light pollution mitigation.
Detailed site development requirements.
Subsurface graywater irrigation systems
Vegetation and soil protection
Soil reuse and restoration
Landscape, soil and water quality protection plan
Site & land use project electives.
Material Resource Conservation and Efficiency
Material and Waste Management
Waste management planfor construction phase
Post occupancy recycling areas must be shown on plans.
Materials and their properties.
55% of materials used in every project must be any combination of the following
Lamps: Limits mercury content in lamps
Service Life:Building service life plan to be included in construction documents. Not less than 25 years.
Storage and handling of materials.
Moisture Control:Requires specific inspection of foundation drainage systems, damproofing and waterproofing, flashings and roof coverings.
Material related project electives.
Energy Conservation, Efficiency & Atmospheric Quality
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.
Major section topics:
Energy performance and peak power.
Atmospheric impacts – reduced CO2e emissions.
Metering, monitoring and reporting.
Building envelope systems.
Major section topics (cont.):
Mechanical and Svc Water Heating systems
Electrical power and lighting
Appliances and equipment
Commissioning and maintenance.
Energy related project electives.
Water Resource Conservation and Efficiency
Ch 7 major section topics:
Plumbing systems and conservation measures.
Landscaping and irrigation – addressed in Chapter 4.
Specific water savings measures.
Use of grey water, rain collection and storage.
Chapter 7Water Resource Conservation & Efficiency
Chapter 8 major section topics:
Building construction features, operations & maintenance
HVAC system requirements
Construction phase emissions and pollution control, HVAC flush out
Asbestos use prevention
Material emissions & pollutant control
Views to exterior and daylighting
Commissioning, Operation & Maintenance
Chapter 9 major section topics:
Pre-Occupancy inspections and testing.
Owner or tenant post occupancy operations.
Education of building users.
A process that verifies and documents that the selected building systems have been designed, installed, and function according to the owner’s project requirements and construction documents, and to minimum code requirements except as noted herein.
Acceptable to the code official or authority having jurisdiction.
An established and recognized agency regularly engaged in conducting tests or furnishing commissioning services, where such agency has been approved.
A registered design professional engaged by the owner to review and coordinate certain aspects of the project, as determined by the building official, for compatibility with the design of the building or structure, including submittal documents prepared by others, deferred submittal documents and phased submittal documents.
902.1.1 Independence. An approved agency shall be objective, competent and independent from the contractor responsible for the work being inspected. The agency shall also disclose possible conflicts of interest so that objectivity can be confirmed.Section 902Approved Agency
902.1.2 Equipment. An approved agency shall have adequate equipment to perform the required commissioning. The equipment shall be periodically calibrated.
Table 903.1 – Commissioning Plan
903.1.1 Pre occupancy report
The approved agency shall furnish commissioning reports.
Prior to the issuance of a Certificate of occupancy, a final commisioning report shall be submitted to and accepted by the code official.
903.1.2 Post occupancy report
Post occupancy reports required.
Within 30 months of the issuance of the Certificate of Occupancy a post commissioning report shall be submitted to the owner and made available to the code official.
COMMISSIONING PLAN (continued)
The ICC co-developed the National Green Building Standard (NGBS), otherwise known as ICC 700-2008, with the National Association of Home Builders (NAHB). It is not referenced in the IgCC. Residential buildings that are not covered in the IRC must the IGCC.What about residential properties?
The AIA and ASTM-International are the “Cooperating Sponsors” for this initiative, and as such have an active role in the development process. Other organizations who participated in the development include the U.S. Green Building Council (the purveyor of the LEED rating system), the Green Buildings Initiative (GBI), ASHRAE as well as state and local officials. Well over 100 organizations and individuals participated in the development effort.
The ICC Board created a Sustainable Building Technology Committee (SBTC) composed of 28 individuals from multiple sectors, to draft Public Version 1.0. The SBTC conducted open meetings around the U.S. between July 2009 and January 2010, creating IGCC Public Version 1.0 as a tool for jurisdictions wishing to develop a code based on the ICC process.
A Public Version 2.0 was released in November 2010 after public comments and hearings. It is published for comments now.
In 2011, Code Development and Final Action Hearings will deliver the 2012 IGCC.How does the development process work?
This process tracks the development of the other codes in the I-Codes series. Once the 2012 Code is issued, it will be revisited every three years along with the other I-Codes, through the two-hearing process used to update all of the I-Codes.How does the development process work?
The IGCC creates a regulatory framework for new and existing commercial and high-performance buildings. Rating systems are not written in the form of enforceable codes, acting as optional approaches, such as awarding points based on the inclusion of certain design elements and other features with the assumption is that the combination and concentration of favored elements will result in a positive environmental impact. The IGCC will build on that foundation to ensure that measurable building performance and an adherence to building safety will be featured in the model code language. It is anticipated that the IGCC will look to existing rating systems and standards as resources in developing the regulatory framework.What is the difference between the IGCC and other systems and standards such as LEED, Green Globes, etc. ?
One of the values of the IGCC is that it will be designed to coordinate and integrate with existing I-Codes. The IGCC includes various levels for jurisdictions to apply unique “green” requirements to commercial buildings. The IGCC will not replace the IBC but rather can be adopted and used in conjunction with the adopted IBC, as well as all the other I-Codes.How will the IGCC differ from other International Codes such as the International Building Code (IBC)?
The development of a code occurs when there is a clear need indicated from regulators and others in the building safety industry. In the case of the IGCC, there has been an increasing call for an actual code that is clear and enforceable. We have heard this not only from our members in local and state government, but from stakeholders across the spectrum. This is why the AIA and the ASTM have joined the ICC as “Cooperating Sponsors.” For example, architects want a code book that will guide their design activities just like the other I-Codes. The inclusion of ANSI/ASHRAE/USGBC/IES Standard 189.1 provides the jurisdiction the option of using either the IGCC or Standard 189.1.Why is the ICC promoting its Green Construction Code when other options already exist?