International Green Construction Code (IgCC)

Transcription

1 March 2015 International Green Construction Code (IgCC) Dave Walls, International Code Council

2 International Code Council (ICC) Member-focused Organization Dedicated to developing model codes and standards ICC codes are used throughout the US and in some global economies Used in design, build and compliance process to construct For safe, sustainable, affordable and resilient structures Full Service Codes Organization

3 Model Code Structure Typical Code structure Overview of Green codes Model Code International Codes Adopted Code w/amendments California Codes(Title 24) Local Code w/amendments LA City Codes 2012 IgCC Fundamentals Page 7

4 Purpose of Model Codes Provides code implementation and enforcement provisions (Chapter 1) Minimum requirements for pubic safety, health, welfare and environmental Protect life and property from fire and other hazards Structural Strength Means of Egress Sanitation Light Ventilation Energy conservation Environmental protection Etc. 4

5 IgCC Context The IgCC is a model code The IgCC is not a rating system The IgCC consists of minimum mandatory requirements, similar to the other I-Codes. The IgCC contains a regulatory framework that facilitates both customization and flexibility IgCC Addresses of: Site Development Materials Resources Energy Conservation and CO 2 e Water Conservation Indoor Environmental Quality

6 ICC International Codes International Green Construction Code (IgCC) Part of a family of a set of coordinated and correlated model codes International Building Code International Fire Code International Mechanical Code International Plumbing Code International Residential Code International Energy Conservation Code International Existing Building Code International Fuel Gas Code International Property Maintenance Code International Private Sewage Disposal Code International Zoning Code International Wildland-Urban Interface Code ICC Performance Code for Buildings and Facilities International Swimming Pool and Spa Code 6

7 IgCC Model Code Development IgCC developed by the International Code Council in association: ASTM and American Institute of Architects (AIA) References ASHRAE as an alternative compliance path, as developed by: ASHRAE and partners USGBC and Illuminating Engineers (IES)

8 Chapter 2: Defined Terms Chapter 3: Jurisdictional Requirements and Life Cycle Assessment Jurisdictional Requirements A new regulatory framework Allows jurisdictions to customize the code to address 20 additional environmental criteria Allows the jurisdiction to set higher minimum levels of performance. Whole Building Life Cycle Assessment An alternative to the material selection requirements of Section 505.

9 Chapter 4: Site Development and Land Use Preservation of natural resources (Tied to Table 302.1) Allows jurisdictions to prohibit construction in floodplains and limit development of certain sites and site features Natural resources inventory required Stormwater management Water conservation in Landscape irrigation Management of vegetation, soils and erosion control Building site waste management Transportation impact Heat island mitigation Site Lighting (Tied to Table 302.1)

10 Chapter 4 Transportation Impact A walkway/bicycle path is required to connect streets or other paths to the building main entrance. Table for bicycle parking Changing and shower facilities are required where: Building > 10,000 square foot And is required to be provided with long term bicycle parking and storage.

11 Chapter 5: Material Resource Conservation and Efficiency Construction material and waste management plan 50% construction waste diversion Jurisdictions can select higher values Requires recycling areas for use by building occupants 55% of materials must be: Recycled, Recyclable, Bio-based, or Indigenous. (Materials are permitted to have multiple attributes.) Mercury limits for fluorescent lamps Moisture control

12 Chapter 6: Energy Conservation, Efficiency & CO 2 e Emission Reduction The IgCC provides the two energy compliance paths: Prescriptive-based Performance-based zepi (Zero Energy Performance Index) Requirements for buildings to demonstrate CO 2 e emissions reduction 12

13 Chapter 6 Contents Modeled performance pathway requirements Energy metering, monitoring and reporting Automated demandresponse infrastructure Plug Load Controls Building mechanical systems Building service water heating systems Building electrical power and lighting systems Specific appliances and equipment Building renewable energy systems Energy systems commissioning 13

14 Chapter 6 Performance-Based Compliance & zepi Modeled Performance Pathway Requirements Applicable only to the performance-based compliance path Requires that buildings demonstrate a zero performance index (zepi) of 51 or less. Requires that buildings demonstrate CO 2 e emissions reduction in accordance with: Equation 6-1 and Sections 602.2

15 Performance-Based zepi & the IECC Year, Code Edition or Other Year 2000 mean of all existing building stock 2006 IECC 2009 IECC 2012 IECC IgCC Point of Entry (see Section ) Jurisdiction (see Table 302.1) Net-Zero Energy Building zepi Scalar (27% +/- better than year 2000 zepi scalar of 100) 62 (15% +/- better than 2006 IECC zepi scalar of 73) 51 (30% +/- better than 2006 IECC zepi scalar 73) 51 (30% +/- better than 2006 IECC zepi scalar 73) 46%? (10% +/- better than the zepi point of entry scalar of 51) 0

16 Chapter 7: Water Conservation and Efficiency Seeks water efficiency regardless of the source Encourages the use of nonpotable water Efficiency provisions for Plumbing fixtures/fittings Appliances Carwashes Cooling towers HVAC systems and equipment Water treatment systems Metering Rainwater collection systems Gray water reuse systems Reclaimed water systems Other alternative water sources

17 Fixture and Fitting Consumption Table Maximum flow rates for showerheads, lavatory and kitchen faucets, etc. Maximum flush rates for water closets and urinals Some of these rates are reduced using the International Plumbing Code (IPC) as a baseline 2012 IgCC Fundamentals Page 75

18 Fixtures, Fittings, Equipment and Appliances Additional requirements are provided for: Combination tub/shower valves tub spout leakage Food establishment pre-rinse spray valve controls Drinking fountain controls Non-water urinal drain connections Appliances Municipal reclaimed water Hot and tempered water distribution Trap priming water 2012 IgCC Fundamentals Page 77-80

19 Appliances Specific requirements for the performance of: Clothes washers Ice makers Food steamers Dishwashers 2012 IgCC Fundamentals Page 78

20 Water Treatment Devices and Equipment Provisions for: Water softeners Reverse osmosis water treatment systems and Onsite reclaimed water treatment systems, including graywater reuse treatment systems 2012 IgCC Fundamentals Page 82-83

21 Specific Water Conservation Measures Each potable, non-potable and reclaimed water source must be metered separately. In addition all applications listed in Table must be metered separately, subject to the thresholds in the table. Irrigation systems Tenant spaces Onsite water collection systems makeup lines Ornamental water features Pools and in-ground spas Cooing towers and evaporative coolers, fluid coolers and chillers Steam boilers Industrial processes Roof spray systems 2012 IgCC Fundamentals Page 83-84

22 Non-Potable Water Requirements Water quality requirements for non-potable water systems. Signage in accordance with Section is required where nonpotable water is used. Water quality for non-potable water used in building systems must meet the requirements established in the jurisdiction for the applicable end use IgCC Fundamentals Pages 84

23 Rainwater Collection and Distribution Systems, Graywater, and Reclaimed Water Systems Does not require the use of rainwater collection, graywater, or reclaimed water systems Provides construction details for these systems which must be followed where they are implemented. Allows the use of alternate nonpotable water sources where treated to the quality level required by the jurisdiction 2012 IgCC Fundamentals Page 85

24 Chapter 8: Indoor Environmental Quality and Comfort Indoor Air Quality Management Plan HVAC & Air-handling systems Air-handling system access Durability and cleanability Filters Ventilation requirements Prohibits smoking in buildings IAQ construction phase requirements IAQ & pollutant control measures Material emissions limits Acoustics (Tied to Table 302.1) Daylighting

25 IAQ Management Plan Building construction, features, operations and maintenance facilitation HVAC Systems Specific Indoor Air Quality & Pollutant Control Measures Asbestos Use Prevention 2012 IgCC Fundamentals Page 91

26 HVAC Systems Contains provisions for: Construction phase: duct openings, indoor air quality ventilation and ductless systems or filters; Temperature and humidity (must comply with ASHRAE , Thermal Environmental Conditions for Human Occupancy) Isolation of pollutant sources in print, copy and janitorial rooms and garages, and System filters (Must be MERV 11 or higher) IgCC Fundamentals Page 92

27 Specific Indoor Air Quality and Pollutant Control Measures Contains provisions for: Fireplaces and appliances vented to the outdoors Post-construction, preoccupancy baseline IAQ testing 2012 IgCC Fundamentals Page 93

28 Material Emissions and Pollutant Control Emissions from composite wood products Applies to all composite wood products used on the interior side of the exterior finish of buildings other than furniture, fixtures and equipment not permanently installed Must conform with one of the following: Formaldehyde limits or standards referenced in Table Be made using adhesives which do not contain ureaformaldehyde resins, or Be sealed on all sides and edges 2012 IgCC Fundamentals Page 94-95

29 Chapter 9: Commissioning, Operations & Maintenance Pre-occupancy inspection and testing Operation and maintenance manual Building maintenance schedules Addresses many issues beyond energy Commissioning (Table 903.1) List of items for which commissioning is required or encouraged Distinguishes between pre-occupancy and post-occupancy commissioning

30 Chapter 10: Existing Buildings Alterations/renovations: Whatever is changed must meet current IgCC requirements. Unaltered components can remain as they are Requirements primarily related to energy & water Capped at10% of the total cost of alterations & other exceptions. Additions are treated much like new construction. Historic buildings exempted from many provisions Jurisdictions can choose to offer the evaluation of existing buildings for IgCC compliance. Chapter 11 covers similar info for building sites.

31 Appendix A: Project Electives Encourages and recognizes construction that exceeds minimum code requirements. Encourages green practices that are difficult or impossible to mandate. (e.g., infill and brownfield site development). Encourages the implementation of practices that are not triggered by the code or mandated by the jurisdiction in Table Enforceable only where specifically adopted. The jurisdiction sets the minimum number of electives that must be complied with on all projects constructed in the jurisdiction. The owner or the owners representative select the specific project electives to be implemented on each project.

32 IgCC Adoptions: Baltimore, MD Washington, DC Richland, WA Keene, NH Dallas, TX Maplewood, MN Washoe County, NV Boulder County, CO Carbondale, CO Snowmass, CO Kayenta Township, AZ Boynton Beach, FL Phoenix, AZ Scottsdale, AZ Maricopa Co, AZ Surprise, AZ Washoe Co, NV Federal Heights, CO Florida Maryland North Carolina Oregon Rhode Island Telleryde, CO Note: adoptions vary

33 ICC Publications and Support Services Education & Training Classroom and Web-Based Certifications Publications ICC- ES Evaluation Services International Accreditation Service (IAS)

34 Partnerships ASTM American Institute of America (AIA) USGBC ASHRAE ANSI ICC is an Accredited Standards Developer All 50 States Global Economies

35 cdpaccess cdpaccess is the ICC s initiative to elevate the code development process by allowing participants to develop, discuss, and share code changes and public comments online from a database of current codes. Collaborate Submit Vote

36 IgCC and Rating Systems IgCC creates baseline Complements voluntary rating systems No set value LEED GBI ICC, AIA, USGBC, and ASHRAE MOU ASHRAE and IgCC will merge in 2018

37 Summary The IgCC is: Comprehensive & integrated Sets minimum requirements Creates a Baseline Developed through Consensus process Complete support system IgCC and ASHRAE merger

38 For more information see:

39 Questions & Answers Dave Walls Executive Director of Sustainability Programs Ext For technical support please contact: Allan Bilka Kermit Robinson Code interpretations are a benefit of ICC Membership 39

40 Copyrighted Materials This presentation is protected by US and International Copyright laws. Reproduction, distribution, display and use of the presentation without written permission of the speaker is prohibited. International Code Council 2012