Southeastern Regional Building Commissioner’s Association Overview of the International Green Construction Code (Ig. CC) Doug Connell International Code Council September 2011
What is the Ig. CC? 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 drive green building into everyday practice
Ig. CC Concepts The Ig. CC is not a rating system, nor is it intended to replace them. The Ig. CC is code which is intended to be adopted on mandatory basis. Unlike most rating systems, the Ig. CC primarily consists of minimum mandatory requirements, just as other I-Codes.
Ig. CC Concepts 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? Not just local, not just the U. S. , but the entire planet.
Ig. CC Concepts Because the IGCC is intended to apply to both private sector and government owned buildings on a mandatory basis – it Raises the floor of sustainability for all commercial buildings. Positions the IGCC to achieve environmental benefits on a massive scale – a scale not possible with voluntary rating systems.
Ig. CC: Detailed and Comprehensive Provides many detailed prescriptive requirements, as well as performance targets, which are quantified and enforceable. Does not award innovation without merit or the implementation of theories without real world value. Contains many detailed requirements, including: Gray water system details Irrigation system details Rainwater catchment system details Actual energy provisions 7
Chapter Topics 1: Administration 2: Definitions 3: Requirements determined by the jurisdiction and project electives 4: Site development & land use 5: Materials resource efficiency 6: Energy conservation and efficiency 7: Water conservation and efficiency
Chapter Topics 8: Indoor environmental quality 9: Commissioning, operation and maintenance 10: Existing buildings 11: Existing building sites 12: Referenced standards Appendices Ø A: Optional Ordinance Ø B: Greenhouse Gas Reductions in Existing Buildings Ø C: Sustainability Measures Ø D: Enforcement Procedures
SCOPE ü New and existing construction ü All buildings other than those covered by the IRC The Ig. CC is an overlay code. Compliance enforced as part of other applicable codes. References other I-Codes ü IBC, IFGC, IMC, IPMC, IFC, IWUIC, ICCPC, IEBC, IZC. Chapter 1 Administration . 10
Does Chapter 1 Administration not circumvent the requirements of other codes, but often exceeds them. Regulates sustainable aspects of construction not covered by other codes. Regulates the impact of the built environment on the natural environment. 11
Chapter 2 Shares some definitions which are common to other International codes. Primarily provides definitions unique to the Ig. CC. Examples: Approved Agency Building Commissioning Construction Documents Control Daylight Control Occupant Sensor Control Definitions 12
Demand Response, Automated Energy Management and Control System Registered Designer in Responsible Charge Sequence of Operation Chapter 2 Definitions 13
LIFE CYCLE ASSESSMENT (LCA). 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. 15
Chapter 3 – Jurisdictional Requirements Allows jurisdictions to make choices which: 1. 2. 3. 4. Can tailor the code to address environmental concerns of a local nature. Respond to environmentally related local political agendas. Apply to all buildings constructed in the jurisdiction. Determine whether certain provisions will be enforced. Internal document confidential information for ICC
Ig. CC Table 302. 1 allows regional choices, similar in concept to Table R 302. 1(1) in the IRC. Allows jurisdictions to make choices for higher levels of stringency by: Table 302. 1 Determining whether certain provisions will be enforced in the jurisdiction. (Typically yes or no Jurisdictional Requirements 22 Choices affecting Chapters 4 through 10 Decisions made in Table 302. 1 apply to all buildings constructed in the jurisdiction. Many of the choices in Table 302. 1 may pose risks for certain jurisdictions. (Thus they may pose a answers. ) barrier to adoption in some regions and are not mandatory for all jurisdictions. ) 17
Table 302. 1 Requirements Determined by the Jurisdiction 402. 2. 6 Greenfields Yes No 403. 4. 1 High occupancy vehicle parking Yes No 403. 4. 2 Low emission, hybrid and electric vehicle parking Yes No 405. 1 Light pollution control Yes No CH 5. MATERIAL RESOURCE CONSERVATION AND EFFICIENCY 502. 1 Enhanced construction material and waste management Yes No 502. 1 Minimum percentage of waste material diverted from landfills - Select a percentage only where “Yes” is selected in the previous row. 50% 65% CH 6. ENERGY CONSERVATION AND EARTH ATMOSPHERIC QUALITY 602. 1, 602. 3. 2, 302. 1. 1 Enhanced energy performance - for buildings pursuing performance based compliance and buildings greater than 25, 000 square feet in total building floor area Yes No Table 602. 1, 302. 1. 1 TANEU of Jurisdictional Choice - Where “Yes” is selected in the previous row, the jurisdiction shall indicate a TANEU of 63 or less in Table 602. 1 for each occupancy for which it intends to require enhanced energy performance See Table 602. 1 and Section 302. 1 18
Allows owners and design professionals to make choices which: § Table 303. 1 Project Electives 52 Electives affecting Chapters 4 through 8 § § Encourage and drive the construction of buildings which exceed the already stringent minimum requirements of the code. Encourage practices which are difficult to mandate. Adds a degree of flexibility to the code. 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. 19
Table 303. 1 Project Electives Checklist Section 304. 1 Check the corresponding box to indicate each project elective selected. CH 3. JURISDICTIONAL REQUIREMENTS AND PROJECT ELECTIVES Description Whole Building Life Cycle Assessment CH 4. SITE DEVELOPMENT AND LAND USE 407. 2. 1 Flood hazard avoidance 407. 2. 2 Agricultural land 407. 2. 3 Infill site 407. 2. 4 Brownfield site 407. 2. 5 Greenfield development 407. 2. 6 Greenfield proximity to development 407. 2. 7 Greenfield proximity to diverse uses 407. 3. 1 Changing and shower facilities 20
Table 303. 1 - Project Electives Checklist 407. 3. 2 Long term bicycle parking and storage 407. 3. 3 Preferred parking 407. 4. 1 Site hardscape 1 407. 4. 2 Site hardscape 2 407. 4. 3 Site hardscape 3 407. 4. 4 Roof covering 407. 5 Light pollution CH 5. MATERIAL RESOURCE CONSERVATION AND EFFICIENCY 507. 2 Waste management (502. 1 + 20%) 507. 3(1) Reused, recycled content, recyclable, bio-based and indigenous materials (50%) 507. 3(2) Reused, recycled content, recyclable, bio-based and indigenous materials (80%) (2 Electives) 507. 4(1) Multi-story building – footprint reduced by at least 45% 21
Table 303. 1 - Project Electives Checklist CH 7. WATER RESOURCE CONSERVATION AND EFFICIENCY (2 Electives) 710. 3 Fixture flow rates are one tier above that required by Table 302. 1 Fixture flow rates are two tiers above that required by Table 302. 1. On-site wastewater treatment 710. 4 Non-potable outdoor water supply 710. 5 Non-potable water for plumbing fixture flushing 710. 6 Automatic fire sprinkler system 710. 7 Non-potable water supply to fire pumps 710. 8 Non-potable water for industrial process makeup water 710. 9 Efficient hot water distribution system 710. 10 Non-potable water for cooling tower makeup water 710. 11 Graywater collection 710. 2. 1 22
Chapter 3 Jurisdictional Requirements Project Electives Whole Building LCA Project Elective Even where adopted in its baseline/minimum form (where no project electives are selected and only “No” boxes checked), the Ig. CC is poised to produce significant environmental benefits. ü No longer must mandatory green building requirements be limited to government buildings. 23
Chapter 4 Site Development and Land Use 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 Erosion control Site waste management plan.
Transportation impact. Site Development & Land Use Bicycle parking and storage Changing and shower facilities Chapter 4 Walkways and bicycle paths Vehicle parking Heat island mitigation. Site hardscape Roof coverings Light pollution mitigation. Detailed site development requirements. Vegetation and soil protection Soil reuse and restoration Landscape, soil and water quality protection plan Subsurface graywater irrigation systems Vegetative roofs Site & land use project electives.
Ig. CC Chapter 5 Material Resource Conservation and Efficiency
Chapter 5 Material Resource Conservation and Efficiency Material and Waste Management Waste management plan for 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 Used, Recycled, recycleabe, Bio-based or Indigenous.
Chapter 5 Material Resource Conservation and Efficiency 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. Strawbale construction. Material related project electives.
Ig. CC Chapter 6: Energy Conservation, Efficiency & Atmospheric Quality
Buildings > 25, 000 sq. ft. must use the performance based compliance path Chapter 6 Uses Zero Energy Performance Index (z. EPI) concept – encourages use of renewable energy, cogeneration and zero net energy buildings. Buildings < 25, 000 sq. ft. may use any of the following : Energy Conservation, Efficiency and Atmospheric Quality 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 Energy performance and peak power. Atmospheric impacts – reduced CO 2 e emissions. Metering, monitoring and reporting. Auto-Demand/Response strategies. Building envelope systems. Chapter 6 Energy Conservation, Efficiency and Atmospheric Quality section topics:
Major Chapter 6 Energy Conservation, Efficiency and Atmospheric Quality section topics (cont. ): Mechanical and Svc Water Heating systems Electrical power and lighting Appliances and equipment Renewable energy. Commissioning and maintenance. Energy related project electives.
Ig. CC Chapter 7: Water Resource Conservation and Efficiency
Chapter 7 Ch 7 major section topics: Plumbing Water Resource Conservation & Efficiency systems and conservation measures. Landscaping and irrigation – addressed in Chapter 4. Specific water savings measures. Use of grey water, rain collection and storage.
Ch 7 major section topics (cont. ): Chapter 7 Fixtures, fittings, equipment & appliances Water Resource Conservation & Efficiency HVAC systems and equipment efficiency Water treatment system efficiency Specific topics (e. g. Submetering, fountains) Nonpotable Alternative water use water sources 35
Chapter 8 major section topics: Chapter 8 Indoor Environmental Quality Building construction features, operations & maintenance HVAC system requirements Construction phase emissions and pollution control, HVAC flush out Asbestos use prevention Material emissions & pollutant control IAQ measures Sound transmission Views to exterior and daylighting
Ig. CC Chapter 9: Commissioning, Operation & Maintenance
Chapter 9 Commissioning, Operation & Maintenance Chapter 9 major section topics: Pre-Occupancy inspections and testing. Owner or tenant post occupancy operations. Commissioning. Building maintenance. Education of building users. 38
BUILDING COMMISSIONING 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.
APPROVED Acceptable to the code official or authority having jurisdiction. APPROVED AGENCY An established and recognized agency regularly engaged in conducting tests or furnishing commissioning services, where such agency has been approved.
REGISTERED DESIGN PROFESSIONAL IN RESPONSIBLE CHARGE 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 Section 902 Approved Agency q. Independence q. Equipment q. Personnel 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. Internal document confidential information for ICC
902. 1. 2 Equipment. An approved agency shall have adequate equipment to perform the required commissioning. The equipment shall be periodically calibrated. 902. 1. 3 Personnel. An approved agency shall employ experienced personnel educated in conducting, supervising and evaluating tests and commissioning. Section 902 Approved Agency q. Independence q. Equipment q. Personnel Internal document confidential information for ICC
Modeled after Ø Section 903 Commissioning Special inspections criteria in Chapter 17 of the IBC and Ø Commissioning criteria found in the IECC Table 903. 1 – Commissioning Plan Ø List of items for which commissioning is required or encouraged Ø Contains columns which distinguish between preoccupancy and postoccupancy commissioning Ø Commissioning requirements extend well beyond the energy realm, including site, materials and water, etc. 44
903. 1. 1 Pre occupancy report Section 903 Commissioning The approved agency shall furnish commissioning reports. Pre commissioning report Prior to the issuance of a Certificate of occupancy, a final commisioning report shall be submitted to and accepted by the code official. 45
Section 903 Commissioning Post commissioning report 903. 1. 2 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. 46
TABLE 903. 1 COMMISSIONING PLAN Occurrence Construction or System Pre requiring Verification Occ. Post Occ. Method Pre Occ. Post Occ. Section/ Ref. Std. None 402. 3. 3 406. 6 24 months 404. 3. 2 None 405 Chapter 4: Site development and land use Landscape irrigation systems X Vegetative Roofs and Terraces X Site Lighting X None Field inspection X Field inspection and report None Installation of protective membranes, base materials, soils and vegetation Testing and report Installation Internal document confidential information for ICC
Table 903. 1 Commissioning Plan (continued) Construction or System requiring Verification Occurrence Pre Occ. Post Occ. Method Pre Occ. Chapter 5: Materials Post Occ. Section/ Ref. Std. None 506. 3 and IBC Ch 18 Moisture Control (Section 506. 3) 1. Foundation sub-soil drainage system. 2. Foundation dampproofing and waterproofing. 3. Flashing at: Windows, exterior doors, skylights, wall flashing and drainage systems. 4. Exterior wall coverings. X X None Field inspection and verification Periodic inspection for entire sub-soil drainage system. Periodic inspection for the entire foundation. Periodic inspection for not less than XX% of all flashing locations. Periodic inspection for not less than 25% of exterior wall cladding systems. None 506. 3 and IBC Ch 14 Internal document confidential information for ICC
Table 903. 1 Commissioning Plan (continued) Construction or System requiring Verification Pre Occ. Post Occ. Section/ Ref. Std. None 604 Annually 604, 611 None 612. 1 and through reference to IECC Occurrence Method Chapter 6 - Energy Pre Occ. Energy consumption, monitoring, targeting and reporting a. Monitoring system b. Calibration Mechanical systems completion – all buildings a. Air system balancing – provide the means for system balancing b. Hydronic system balancing – provide means for system balancing c. Duct system testing X X X During construction and prior to occupancy None Inspection and verification X Testing and review and evaluation or During test reports commissioning None Inspection and verification During construction and prior to occupancy Inspection and verification Testing, testing report and verification of results During construction and prior to occupancy During construction and/or at final inspection. None 612. 1. 2. 2 and through reference to IECC 613. 5. 3 and through reference to the IECC Internal document confidential information for ICC
TABLE 903. 1 COMMISSIONING PLAN (continued) Occurrence Construction or System requiring Verification Pre Occ. Post Occ. Method Pre Occ. Chapter 6 – Energy (continued) None Verification of Plan review construction documents d. Mechanical system manuals – construction documents to require O&M manual Mechanical systems – buildings over 5, 000 square feet total building floor area a. Commissioning required and noted in plans and specifications X X None Verification of construction documents b. Documentation of required commissioning outcomes X None Verification with the building owner Post Occ. Section/ Ref. Std. None 612. 1. 5. 2 Plan review None 612. 1 Subsequent to completion of all commissionin g activities None 612. 1 Internal document confidential information for ICC
Table 903. 1 Commissioning Plan (continued) Occurrence Construction or System requiring Verification Mechanical systems – buildings over 5, 000 square feet total building floor area c. Preparation and availability of a commissioning plan Pre Occ. Post Occ. Method Pre Occ. Chapter 6 – Energy (continued) Post Occ. Section/ Ref. Std. X None Verification with the RDP or commissioning agent Between plan review and commissioning initiation None 612. 1. 1 d. Balance HVAC systems (both air and hydronic) X X HVAC system installer/contract or or commissioning agent After installation of HVAC systems and prior to occupancy TBD 612. 1. 2 e. Functional performance testing of HVAC equipment X X HVAC system installer/contract or or commissioning agent After installation of HVAC systems and prior to occupancy TBD 612. 1. 3 Internal document confidential information for ICC
Table 903. 1 Commissioning Plan (continued) Construction or System requiring Verification Occurrence Pre Occ. Post Occ. X X HVAC system installer/contractor or commissioning agent g. Preparation of preliminary commissioning report None X h. Acceptance of HVAC systems and equipment/system verification report None X HVAC system installer/contractor or commissioning agent Building owner i. Preparation and None distribution of final HVAC system completion Documentation that construction documents require drawings, manuals, balancing reports and commissioning report be provided to the owner and that they have been provided X Mechanical systems – buildings over 5, 000 square feet total building floor area f. Functional performance testing of HVAC controls and control systems Pre Occ. Method Chapter 6 – Energy (continued) RDP, contractor or commissioning authority Post Occ. Section/ Ref. Std. After installation TBD of HVAC systems and prior to occupancy None Subsequent to commissioning 612. 1. 3. 2 None Letter verifying receipt of the commissioning report 612. 1. 4. 1 None 90 days after 612. 1. 5 final certificate of occupancy 612. 1. 4 Internal document confidential information for ICC
Table 903. 1 Commissioning Plan (continued) Construction or System requiring Verification Pre Occ. Post Occ. Auto demand reduction control system functionality Plug load controls X X X None Occurrence Method Pre Occ. Chapter 6 - Lighting Functional Final Testing Inspection Post Occ. Section/ Ref. Std. 18 -24 months 605. 4 Final Inspection None 609. 6 X Functional Testing Field Inspection 18 -24 months 609. 6 Connection of appliances to switched receptacles Specified transformer nameplate efficiency rating Verification of lamp X None Field Inspection Final Inspection None 609. 8. 1. 1 X X Field Inspection 18 -24 months 609. 10 Verification of ballast X None Field Inspection Final Inspection None 609. 10 Lighting controls a. Installation X None Field Inspection None 609. 11 a. X X System Installer/Contrac tor or Commissioning Agent Post Installation 18 -24 months 612. 2 Calibration Internal document confidential information for ICC
Loosely based on the provisions of the IBC for existing buildings: Ø For alterations/renovations: whatever is changed must meet current Ig. CC requirements. Ø Unaltered components can remain as they are. Ø Additions are treated much like new construction: applicable requirements of the Ig. CC must be satisfied. ü Section 1002. 1: Prohibits the construction of additions to buildings in flood hazard areas. Ø Exception: where all habitable space is located at least 1 foot above flood 54 elevation. ü Chapter 10 Existing Buildings
Chapter 10 Existing Buildings ü Alterations to Existing Buildings: Ø Basic prescriptive requirements addressing: Ø Leaks Ø Defective equipment and systems Ø Extensive prescriptive list limited to 10% of the cost of alterations. Ø Triggered by any change of occupancy or alteration. 55
For more information and updates check the ICC website www. iccsafe. org/igcc
Frequently Asked Questions
What about residential properties? 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 Ig. CC. Residential buildings that are not covered in the IRC must the IGCC.
Who is supporting the ICC in this effort? 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. Standard 189. 1, included as a jurisdictional compliance option, was developed by ASHRAE, USGBC and the Illuminating Engineering Society (IES). Those organizations have now joined in the effort to promote the IGCC.
How does the development process work? 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.
What is the difference between the IGCC and other systems and standards such as LEED, Green Globes, etc. ? 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.
How will the IGCC differ from other International Codes such as the International Building Code (IBC)? One of the values of the IGCC is that it will be designed to coordinate and integrate with existing ICodes. 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.
Why is the ICC promoting its Green Construction Code when other options already exist? 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 ICodes. The inclusion of ANSI/ASHRAE/USGBC/IES Standard 189. 1 provides the jurisdiction the option of using either the IGCC or Standard 189. 1.
For more information and updates check the ICC website www. iccsafe. org/igcc
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