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What you need to know about the IgCC


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David Walls, Executive Director of Sustainability Programs for the International Code Council, joined GreenExpo365 for a live, free webinar. He walked us through the International Green Construction Code and how it impacts the building industry.
You can see the entire presentation (and get AIA/CEU credits by watching it) in the Auditorium (

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What you need to know about the IgCC

  1. 1. International GreenConstruction Code2012
  2. 2. Overview of the International Green Construction Code (IgCC) GreenExpo365 Wednesday, February 1, 2012 Dave Walls International Code Council Internal document confidential information for ICC
  3. 3. International Green Construction CodeOverview of the development and schedule of the International Green Construction Code (IgCC)Highlights of the Code provisionsWhere the IgCC has been adopted Internal document confidential information for ICC
  4. 4. 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 April 29, 2011
  5. 5. IgCC Context  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 a mandatory basis.  Unlike most rating systems, the IgCC primarily consists of minimum mandatory requirements, just as other I- Codes. April 29, 2011
  6. 6. 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, excluding  R-3 occupancies  R-2 & R-4: 3 stories in height or less Intended to be enforced primarily by building officials – a system already in place nation wide Intended to drive green building into everyday practice
  7. 7. Our Partners
  8. 8. IgCC Development Schedule
  9. 9. Key Features Internal document confidential information for ICC
  10. 10. Concepts Uses “model” code approach that provides communities the ability to modify. Minimum & advanced levels of performance (green & high- performance buildings). Works as an overlay to the ICC Family of Codes. References other I-Codes  IBC, IFGC, IMC, IPC, IPMC, IFC, IWUIC, ICCPC, IEBC, IZC, IECC. August 3, 2011
  11. 11. Concepts Written in mandatory language that provides a new regulatory framework. Provides both performance & prescriptive options. Code can be modified to account for local conditions. Addresses the 2030 Challenge. Designed with local, state & federal law in mind. August 3, 2011
  12. 12. Concepts ANSI/ASHRAE/USGBC/IES Standard 189.1 also is offered as a compliance option.  The Standard is included with the IgCC. Providing the IgCC, with or without the189.1 option, allows the widest set of options to a jurisdiction, all under the umbrella of the IgCC. August 3, 2011
  13. 13. Chapter Topics Energy use conservation/efficiency (IECC baseline). Water use conservation/efficiency. Indoor environmental quality. Materials and resource conservation. Jurisdictional Requirements --customization options beyond base (22 choices); includes ANSI/ASHRAE/USGBC/IES Standard 189.1. Project Electives (52 project electives) – designer choice. Site development & land use. Existing buildings & sites. Commissioning, Operation & Maintenance. Administration, Definitions, Referenced Standards. August 3, 2011
  14. 14. Framework Internal document confidential information for ICC
  15. 15. Chapter 3  Chapter 3/Appendix A is unique in that it allows the jurisdiction to customize the document to a limited degree.  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/Appendix A: 1. Jurisdictional Requirements. 2. Option to adopt ASHRAE Standard 189.1 (Replaces IgCC Except Chapter 1) 3. Project Electives
  16. 16.  IgCC Table 302.1 allows regional choices, similar in concept to Table R302.1(1) in the IRC.  Allows jurisdictions to makeTable 302.1 choices for higher levels of stringency by:  Determining whether certainJurisdictional provisions will be enforced in the jurisdiction. (Typically yes or noRequirements answers.)  Decisions made in the Table22 Choices affecting apply to all buildingsChapters 4 through 10 constructed in the jurisdiction.  Many of the choices in Table 302.1 may pose risks for certain jurisdictions. (Thus they may pose a barrier to adoption in some regions and are not mandatory for all jurisdictions.)
  17. 17.  Allows owners and design professionals to make choices which:  Encourage and drive the construction of buildings which exceed the alreadyTable 303.1 stringent minimum requirements of the code.  Encourage practices whichProject Electives are difficult to mandate.  Adds a degree of flexibility52 Electives affecting to the code.Chapters 4 through 8  Jurisdiction determines minimum number that must be satisfied in Table 302.1.  Owner chooses which electives will be complied with on a project by project basis.
  18. 18.  Even where adopted in itsChapter 3 baseline/minimum form (where no project electives are selected and only “No”Jurisdictional boxes checked), the IgCC isRequirements poised to produce significant environmental& Project benefits.Electives  No longer must mandatory green building requirements be limited toJurisdictional government buildings.RequirementsProject Electives
  19. 19. IgCC Chapter 4: Site Development and Land Use Internal document confidential information for ICC
  20. 20.  Preservation of Natural Resources  Protection by area: e.g. floodplains, conservation areas, park lands, agricultural lands,Chapter 4 greenfields.  Site design and developmentSite Development requirements:  Pre-design site inventory andand Land Use assessment  Stormwater management,  Landscape irrigation systems,  Management of vegetation and soils  Erosion control  Site waste management plan.
  21. 21.  Transportation impact.  Walkways and bicycle paths  Changing and shower facilities  Bicycle parking and storage  Vehicle parking  Heat island mitigation.Chapter 4  Site hardscape  Roof coveringsSite Development  Light pollution mitigation.& Land Use  Detailed site development requirements.  Subsurface graywater irrigation systems  Vegetation and soil protection  Soil reuse and restoration  Landscape, soil and water quality protection plan  Vegetative roofs  Site & land use project electives.
  22. 22. IgCC Chapter 5:Material Resource Conservation and Efficiency Internal document confidential information for ICC
  23. 23.  Material and Waste Management  Waste management plan for construction phase  Post occupancy recycling areasChapter 5 must be shown on plans.  Materials and their properties.  55% of materials used in everyMaterial project must be anyResource combination of the followingConservation and  Used,  Recycled,Efficiency  Recyclable,  Bio-based or  Indigenous.
  24. 24.  Lamps: Limits mercury content in lamps  Now moved to Project Electives Appendix – no longer a requirement. Service Life:Chapter 5 Building service life plan to be included in construction documents. Not less than 25 years.Material  Storage and handling ofResource materials.Conservation and  Moisture Control: RequiresEfficiency specific inspection of foundation drainage systems, damproofing and waterproofing, flashings and roof coverings.  Material related project electives.
  25. 25. IgCC Chapter 6:Energy Conservation, Efficiency & Atmospheric Quality Internal document confidential information for ICC
  26. 26. Buildings > 25,000 sq. ft. may use either of the following compliance paths:  Zero Energy Performance Index (zEPI) path – a performance path.  Outcome-based (Annual Net Energy Performance: Btu/sq. ft.)Chapter 6 Buildings < 25,000 sq. ft. may use any the following paths:Energy  Performance based pathConservation,  Prescriptive based path Energy Use Intensity (EUI) pathEfficiency and   Must be in top 10% of EPA’sAtmospheric Target Finder ProgramQuality  Outcome based path
  27. 27. Major section topics:  Energy performance and peak power.Chapter 6  Atmospheric impacts – reduced CO2e emissions.Energy  Metering, monitoringConservation, and reporting.Efficiency and  Auto-Demand/ResponseAtmospheric strategies.Quality  Building envelope systems.
  28. 28. Major section topics (cont.):  Mechanical and SvcChapter 6 Water Heating systems  Electrical power andEnergy lightingConservation,  Appliances and equipmentEfficiency and  Renewable energy.Atmospheric  Commissioning andQuality maintenance.  Energy related project electives.
  29. 29. IgCC Chapter 7:Water Resource Conservation and Efficiency Internal document confidential information for ICC
  30. 30. Ch 7 major section topics:  Plumbing systems and conservationChapter 7 measures.Water Resource  Landscaping andConservation & irrigation – addressedEfficiency in Chapter 4.  Specific water savings measures.  Useof grey water, rain collection and storage.
  31. 31. Ch 7 major section topics (cont.):  Fixtures, fittings, equipment & appliancesChapter 7  HVAC systems and equipment efficiencyWater Resource  Water treatment systemConservation & efficiencyEfficiency  Specific topics (e.g. Submetering, fountains)  Nonpotable water use  Alternative water sources
  32. 32. IgCC Chapter 8:Interior Environmental Quality and Comfort Internal document confidential information for ICC
  33. 33. Chapter 8 major section topics:  Building construction features, operations & maintenance  HVAC system requirementsChapter 8  Construction phase emissions and pollution control, HVAC flush outIndoor  Asbestos use preventionEnvironmental  Material emissions & pollutantQuality control  IAQ measures  Views to exterior and day-lighting
  34. 34. IgCC Chapter 9:Commissioning, Operation & Maintenance Internal document confidential information for ICC
  35. 35. Chapter 9 major topics:  Commissioning (inspections and testing, pre or post- occupancy) required asChapter 9 listed in Table 903.1.  Post occupancy reportingCommissioning, required where selected by the jurisdiction in TableOperation & 302.1. (904.1.1.1)Maintenance
  36. 36. Modeled after  Special inspections criteria inSection 902 Chapter 17 of the IBC andApproved Agency  Commissioning criteria found in the IECCandSection 903 Table 903.1 – CommissioningCommissioning Plan  List of items for which commissioning is required  Contains columns which distinguish between pre- occupancy and post- occupancy commissioning  Commissioning requirements extend well beyond the energy realm, including site, materials, water, etc.
  37. 37. IgCC Chapter 10: Existing Buildings Internal document confidential information for ICC
  38. 38.  Loosely based on the provisions of the IBC for existing buildings:  For alterations/renovations: whatever is changed must meet current IgCC requirements.  Unaltered components can remain as they are.Chapter 10  Additions are treated much like new construction: applicable requirements ofExisting the IgCC must be satisfied.Buildings  Section 1002.1: Prohibits the construction of additions to buildings in flood hazard areas.  Exception: where all habitable space is located at least 1 foot above flood elevation.
  39. 39.  Alterations to Existing Buildings:  Basic prescriptive requirements addressing:  Leaks  Defective equipmentChapter 10 and systems  Extensive prescriptive list limited to 10% of the costExisting of alterations.Buildings  Triggered by any change of occupancy or alteration.
  40. 40. Where has the IgCC been adopted?State of Rhode IslandState of MarylandState of OregonCity of Richland, WACity of Keene, NHCity of Ft. Collins, COKayenta Township, AZCity of Boynton Beach, FLCity of Phoenix, AZCity of Scottsdale, AZ Internal document confidential information for ICC
  41. 41. For more information and updates check the ICC