Ontario s Building Code

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1 Ministry of Municipal Affairs and Housing ONTARIO ONLY Ontario s Building Code PROPOSED CHANGE TO THE 2006 BUILDING CODE CHANGE NUMBER E-SB CODE REFERENCE Supplementary Standard SB-10 Chapter 3 DESCRIPTION OF PROPOSED AMENDMENT Replace Chapter 3 with additional requirements to ANSI/ASHRAE/IESNA Standard to increase the energy efficiency design of large buildings after December 31, This proposal includes, for consideration, options for increasing the energy efficiency by 10% and 13% above those requirements that are already scheduled to take effect after December 31, EXISTING 2006 BUILDING CODE PROVISION(S) Chapter 1 General 1.1. Scope Supplement to ANSI/ASHRAE/IESNA Standard Chapter 2 (1) Chapter 2 shall be deemed to supplement the ANSI/ASHRAE/IESNA Standard 90.1, Energy Standard for Buildings Except Low-Rise Residential Buildings, and applies where compliance with energy efficiency requirements is achieved in accordance with Clause (2)(a) of Division B Supplement to MNECB Chapter 3 (1) Chapter 3 shall be deemed to supplement the CCFBC, Model National Energy Code of Canada for Buildings, 1997", and applies where compliance with energy efficiency requirements is achieved in accordance with Clause (2)(b) of Division B. See existing provisions in Chapter 3 of Supplementary Standard SB-10. Copyright Queen's Printer for Ontario 2011 Page 1 of 16

2 PROPOSED CODE CHANGE Revise Section 1.1 in Chapter 1 as follows: 1.1. Scope Supplement Additional Requirements to ANSI/ASHRAE/IESNA Standard Chapter 2 (1) Chapter 2 shall be deemed to supplement the ANSI/ASHRAE/IESNA Standard 90.1, Energy Standard for Buildings Except Low-Rise Residential Buildings, and applies where compliance with energy efficiency requirements is achieved in accordance with Clause (2)(a) of Division B Chapter 3 (1) Chapter 3 shall be deemed additional requirements to the ANSI/ASHRAE/IESNA Standard 90.1, Energy Standard for Buildings Except Low-Rise Residential Buildings, and applies where compliance with energy efficiency requirements is achieved in accordance with Clause (2)(b) of Division B Supplement to MNECB Chapter 3 (1) Chapter 3 shall be deemed to supplement the CCFBC, Model National Energy Code of Canada for Buildings, 1997", and applies where compliance with energy efficiency requirements is achieved in accordance with Clause (2)(b) of Division B. Delete Chapter 3 and substitute the following: Chapter 3 Additional Requirements to ANSI/ASHRAE/IESNA Standard Scope Energy Efficiency Design After December 31, Compliance in accordance with Clause (2)(b) of Division B (1) This Chapter shall apply to construction for which a permit has been applied for after December 31, 2016 and where compliance with energy efficiency requirements is achieved in accordance with Clause (2)(b) of Division B. TBD Sentence (2) - OPTION 1 (2) The energy efficiency of all buildings shall be designed to Article to Article of this Chapter and the ANSI/ASHRAE/IESNA 90.1, Energy Standard for Buildings Except Low-Rise Residential Buildings (2010 Edition) (Option %) Copyright Queen's Printer for Ontario 2011 Page 2 of 16

3 Sentence (2) - OPTION 2 (2) The energy efficiency of all buildings shall be designed to Article to Article of this Chapter and the ANSI/ASHRAE/IESNA 90.1, Energy Standard for Buildings Except Low-Rise Residential Buildings (2010 Edition) (Option %) Building Envelope (1) The Building envelope shall comply with Chapter 2 of this Supplementary Standard HVAC and Service Water heating Equipment Minimum Equipment Efficiency (1) Minimum Equipment Efficiency of a gas-fired boiler shall comply with the value required in Table SB (2) Minimum Equipment Efficiency of a gas-fired storage water heater shall comply with the value required in Table SB Table SB Minimum Equipment Efficiency for Gas Condensing Boilers and Gas Water Heaters Equipment Size Category Performance Required Test Procedure Gas boilers, hot water <300,000 Btu/h 90% AFUE CSA P.2-07 $ 300,000 Btu/h and < 2,500,000 Btu/h 88%Et HI BTS 2000 Gas water heaters >75,000 Btu/h 92%E CSA 4.3 / ANSI Lighting (1) The lighting power allowance shall be determined in accordance with Table SB and Table SB of this Chapter. (2) For the purpose of Sentence (1), any reference to Table and Table of ANSI/ASHRAE/IESNA Standard 90.1 shall be deemed to be a reference to Table SB and Table SB of this Chapter. (3) Table SB and Table SB of this Chapter shall supersede the requirements of Table and Table of the ANSI/ASHRAE/IESNA Standard Copyright Queen's Printer for Ontario 2011 Page 3 of 16

4 Table SB Lighting Power Densities Using the Building Area Method Lighting Power Density Building Area Type W/m 2 (W/ft 2 ) Automotive Facility 7.9 (0.74) Convention Center 10.4 (0.97) Court House 10.2 (0.95) Dining: Bar Lounge/Leisure 9.6 (0.89) Dining: Cafeteria/Fast Food 8.7 (0.81) Dining: Family 8.6 (0.80) Dormitory 5.9 (0.55) Exercise Center 8.5 (0.79) Fire Station 6.9 (0.64) Gymnasium 9.7 (0.90) Health Care-Clinic 8.4 (0.78) Hospital 11.7 (1.09) Hotel 9.7 (0.90) Library 11.4 (1.06) Manufacturing Facility 10.7 (1.00) Motel 8.5 (0.79) Motion Picture Theater 8 (0.75) Multi-Family 5.8 (0.54) Museum 10.3 (0.95) Office 8.7 (0.81) Parking Garage 2.4 (0.23) Penitentiary 9.4 (0.87) Performing Arts Theater 13.4 (1.25) Police Station 9.3 (0.86) Post Office 8.4 (0.78) Religious Building 10.2 (0.95) Retail 13.5 (1.26) School/University 9.6 (0.89) Sports Arena 7.5 (0.70) Town Hall 8.9 (0.83) Transportation 7.4 (0.69) Warehouse 6.4 (0.59) Workshop 11.6 (1.08) Column 1 2 Copyright Queen's Printer for Ontario 2011 Page 4 of 16

5 Table SB Lighting Power Densities Using the Space-by-Space Method Common Space Types W/m 2 W/ft 2 Atrium First 40 ft in height, per feet (height) Height above 40 ft, per feet (height) Audience/Seating Area-Permanent For auditorium For Performing Arts Theatre For Motion Picture Theatre Classroom/Lecture/Training Conference/Meeting/Multipurpose Corridor/Transition Dining Area For Bar Lounge/Leisure Dining For Family Dining Dressing/Fitting Room for Performing Arts Theater Electrical/Mechanical Food Preparation Laboratory For Classrooms For Medical/Industrial/Research Lobby For Elevator For Performing Arts Theater For Motion Picture Theater Locker Room Lounge/Recreation Office Enclosed Open Plan Restrooms Sales Area (for accent lighting, see Section 9.6.2(b)) Stairway Storage Workshop Building-Specific Space Types W/m 2 W/ft 2 Automotive Service/Repair Bank/Office Banking Activity Area Copyright Queen's Printer for Ontario 2011 Page 5 of 16

6 Convention Center Audience Seating Exhibit Space Courthouse/Police Station/Penitentiary Courtroom Confinement Cells Judges' Chambers Penitentiary Audience Seating Penitentiary Classroom Penitentiary Dining Dormitory Living Quarters Fire Stations Engine Room Sleeping Quarters Gymnasium/Fitness Center Fitness Area Gymnasium Audience Seating Playing Area Hospital Corridor/Transition Emergency Exam/Treatment Laundry/Washing Lounge/Recreation Medical Supply Nursery Nurses' Station Operating Room Patient Room Pharmacy Physical Therapy Radiology aging Recovery Hotel/Highway Lodging Hotel Dining Hotel Guest Rooms Hotel Lobby Highway Lodging Dining Highway Lodging Guest Rooms Copyright Queen's Printer for Ontario 2011 Page 6 of 16

7 Library Card File and Cataloguing Reading Area Stacks Manufacturing Corridor/Transition Detailed Manufacturing Equipment Room Extra High Bay (>50 ft Floor to Ceiling Height) High Bay (25-50 ft Floor to Ceiling Height) Low Bay (<25 ft Floor to Ceiling Height) Museum General Exhibition Restoration Parking Garage Garage Area Post Ofiice Sorting Area Religious Buildings Audience Seating Fellowship Hall Worship Pulpit, Choir Retail Dressing Fitting Room Mall Concourse Sales Area (for accent lighting, see Section 9.6.3(c)) Sports Arena Audience Seating Court Sports Arena- Class Court Sports Arena- Class Court Sports Arena- Class Court Sports Arena- Class Ring Sports Arena Transportation Air/Train/Bus-Baggage Area Airport-Concourse Audience Seating Terminal-Ticket Counter Warehouse Fine Material Storage Medium/Bulky Material Storage Copyright Queen's Printer for Ontario 2011 Page 7 of 16

8 HVAC Exhaust Air Energy Recovery (1) Each fan system shall have an energy recovery system when the system s supply airflow rate exceeds the value listed in Table SB based on the climate zone and percentage of outdoor air flow rates at design condition. (2) Any reference to Table of ANSI/ASHRAE/IESNA Standard 90.1 shall be deemed to be a reference to Table SB of this Chapter. (3) Table SB of this Chapter shall supersede the requirements of Table of the ANSI/ASHRAE/IESNA Standard Table SB Energy Recovery Requirement (SI) and(ip) % Outside Air at Full Design Flow Climatic Zone $10% and < 20% $20% and < 30% $30% and < 40% $40% and < 50% $50% and < 60% $60% and < 70% $70% and < 80% $ 80% Design Supply Fan Flow, cfm Climatic Zone 5 and 6 (SI) $14158 $6135 $2596 $2124 $1652 $944 $1000 $0 Climatic Zone 5 and 6 (IP) $30000 $13000 $5500 $4500 $3500 $2000 $1000 $0 Climatic Zone 7 (SI) $1888 $1416 $1180 $472 $0 $0 $0 $0 Climatic Zone 7 (IP) $4000 $3000 $2500 $1000 $0 $0 $0 $ Building Envelope (1) The Building envelope shall comply with Chapter 2 of this Supplementary Standard and Sentence (2). (2) For the purpose of Sentence (1), any reference to Tables SB5.5-5 to SB5.5-7 in Chapter 2 of this Supplementary Standard shall be deemed to be a reference to Tables SB to SB Copyright Queen's Printer for Ontario 2011 Page 8 of 16

9 TABLE SB (Supersedes Table SB5.5-5 in ANSI/ASHRAE/ESNA Standard 90.1) Building Envelope Requirements for Climate Zone 5 (A, B, C) (I-P) Nonresidential Residential Semiheated Opaque Elements Assembly Insulation Assembly Insulation Assembly Insulation Max. U-Value Min. R-Value Max. U-Value Min. R-Value Max. U-Value Min. R-Value Roofs Insulation Entirely above Deck U R-25.0 ci U R-25.0 ci U R-10.0 ci Metal Building U R R-11.0 Ls U R R-11.0 Ls U R R Attic and Other U R-49.0 U R-49.0 U R-30.0 Walls, Above Grade Mass U R-26.0 ci U R-26.0 ci U R-7.6 ci Metal Building U R-13 + R-14.0 ci U R-13 + R-14.0 ci U R R-6.5 ci Steel Framed U R-13 + R-11.5 ci U R-13 + R-11.5 ci U R R-3.8 ci Wood Framed and Other U R-13 + R-8.5 ci U R-13 + R-8.5 ci U R R-3.8 ci Wall, Below Grade Below Grade Wall C R-15ci C R-15ci C R-7.5 ci Floors Mass U R-12.5 ci U R-14.6 ci U R-6.3 ci Steel Joist U R-38.0 U R-38.0 U R-30.0 Wood Framed and Other U R R-7.5 ci U R R-7.5 ci U R-30.0 Slab-On-Grade Floors Unheated F R-10 for 24 in. F R-15 for 24 in. F R-10 for 24 in Heated F R-15.0 for 36 in. + R-5 ci below F R-15.0 for 36 in. + R-5 ci below F Opaque Doors Doors U U U R-10 for 24 in. Fenestration Assembly Assembly Assembly Assembly Assembly Assembly Max. U-Value Max. SHGC Max. U-Value Max. SHGC Max. U-Value Max. SHGC Vertical Fenestration,0%-40% of Wall Nonmetal framing: all b U-0.25 U-0.25 U-0.55 Metal fr: curtainwall / storefront c U-0.35 U-0.35 U Metal framing: entrance door c U-0.70 U-0.70 U-0.80 NR Metal framing: all other c U-0.45 U-0.45 U-0.65 Skylight with Curb, Glass,% of Roof 0%-5.0% U U U-1.98 NR Skylight with Curb, Plastic, % of Roof 0%-5.0% U U U-1.90 NR Skylight without Curb, AN,% of Roof 0%-5.0% U U U-1.36 NR The following definitions apply: ci = continuous insulation, Ls = liner system, NR = no (insulation) requirement. a Mass walls with a heat capacity greater than 12 Btu/ft 2 F which are unfinished or finished only on the interior do not need to be insulated. b Nonmetal framing includes framing materials other than metal with or without metal reinforcing or cladding. c Metal framing includes metal framing with or without thermal break. The all other subcategory includes operable windows, fixed windows, and non-entrance doors. Copyright Queen's Printer for Ontario 2011 Page 9 of 16

10 TABLE SB (Supersedes Table SB5.5-6 in ANSI/ASHRAE/ESNA Standard 90.1) Building Envelope Requirements for Climate Zone 6 (A, B) (I-P) Nonresidential Residential Semiheated Opaque Elements Assembly Insulation Assembly Insulation Assembly Insulation Max. U-Value Min. R-Value Max. U-Value Min. R-Value Max. U-Value Min. R-Value Roofs Insulation Entirely above Deck U R-30.0 ci U R-30.0 ci U R-15.0 ci Metal Building U R R-11.0 Ls U R R-11.0 Ls U R R Attic and Other U R-49.0 U R-49.0 U R-38.0 Walls, Above Grade Mass U R-30.5 ci U R-30.5 ci U R-9.5 ci Metal Building U R-13 + R-16.5 ci U R-13 + R-16.5 ci U R R-6.5 ci Steel Framed U R-13 + R-14.0 ci U R-13 + R-14.0 ci U R R-3.8 ci Wood Framed and Other U R-13 + R-11.0 ci U R-13 + R-11.0 ci U R R-3.8 ci Wall, Below Grade Below Grade Wall C R20 ci C R20 ci C R-7.5 ci Floors Mass U R-14.6 ci U R-16.7 ci U R-6.3 ci Steel Joist U R-38.0 U R R-12.5 ci U R-30.0 Wood Framed and Other U R R-7.5 ci U R R-7.5 ci U R-30.0 Slab-On-Grade Floors Unheated F R-15 for 24 in. F R-20 for 24 in. F R-10 for 24 in Heated F R-15.0 for 36 in. + R-5 ci below F R-15.0 for 36 in. + R-5 ci below F Opaque Doors Doors U U U R-10 for 24 in. Fenestration Assembly Assembly Assembly Assembly Assembly Assembly Max. U-Value Max. SHGC Max. U-Value Max. SHGC Max. U-Value Max. SHGC Vertical Fenestration,0%-40% of Wall Nonmetal framing: all b U-0.25 U-0.25 U-0.45 Metal fr: curtainwall / storefront c U-0.35 U-0.35 U Metal framing: entrance door c U-0.70 U-0.70 U-0.80 NR Metal framing: all other c U-0.45 U-0.45 U-0.55 Skylight with Curb, Glass,% of Roof 0%-5.0% U U U-1.98 NR Skylight with Curb, Plastic, % of Roof 0%-5.0% U U U-1.90 NR Skylight without Curb, AN,% of Roof 0%-5.0% U U U-1.36 NR The following definitions apply: ci = continuous insulation, Ls = liner system, NR = no (insulation) requirement. a Mass walls with a heat capacity greater than 12 Btu/ft 2 F which are unfinished or finished only on the interior do not need to be insulated. b Nonmetal framing includes framing materials other than metal with or without metal reinforcing or cladding. c Metal framing includes metal framing with or without thermal break. The all other subcategory includes operable windows, fixed windows, and non-entrance doors. Copyright Queen's Printer for Ontario 2011 Page 10 of 16

11 TABLE SB (Supersedes Table SB5.5-7 in ANSI/ASHRAE/ESNA Standard 90.1) Building Envelope Requirements for Climate Zone 7 (I-P) Nonresidential Residential Semiheated Opaque Elements Assembly Insulation Assembly Insulation Assembly Insulation Max. U-Value Min. R-Value Max. U-Value Min. R-Value Max. U-Value Min. R-Value Roofs Insulation Entirely above Deck U R-35.0 ci U R-35.0 ci U R-15.0 ci Metal Building U R R-11.0 Ls U R R-11.0 Ls U R R-19.0 Attic and Other U R-60.0 U R-60.0 U R-38.0 Walls, Above Grade Mass U R-38.0 ci U R-38.0 ci U R-11.4 ci Metal Building U R-13 + R-21.0 ci U R-13 + R-21.0 ci U R R-6.5 ci Steel Framed U R-13 + R-18.8 ci U R-13 + R-18.8 ci U R R-3.8 ci Wood Framed and Other U R-13 + R-15.0 ci U R-13 + R-15.0 ci U R R-3.8 ci Wall, Below Grade Below Grade Wall C R-20 ci C R-20 ci C R-7.5 ci Floors Mass U R-20.0 ci U R-20.0 ci U R-8.3 ci Steel Joist U R-38.0 U R R-12.5 ci U R-30.0 Wood Framed and Other U R R-7.5 ci U R R-7.5 ci U R-30.0 Slab-On-Grade Floors Unheated Heated F F R-15 for 24 in. + R-5 ci below R-20.0 for 36 in. + R-5 ci below F F R-15 for 24 in. + R-5 ci below R-20.0 for 36 in. + R-5 ci below F F Opaque Doors Doors U U U R-10 for 24 in R-20 for 48 in. Assembly Assembly Assembly Assembly Assembly Assembly Fenestration Max. U-Value Max. SHGC Max. U-Value Max. SHGC Max. U-Value Max. SHGC Vertical Fenestration,0%-40% of Wall Nonmetal framing: all b U-0.25 U-0.25 U-0.45 Metal fr: curtainwall / storefront c U-0.30 U-0.30 U NR Metal framing: entrance door c U-0.70 U-0.70 U-0.80 NR Metal framing: all other c U-0.35 U-0.35 U-0.55 Skylight with Curb, Glass,% of Roof 0%-5.0% U U U-1.98 NR Skylight with Curb, Plastic, % of Roof 0%-5.0% U U U-1.90 NR Skylight without Curb, AN,% of Roof 0%-5.0% U U U-1.36 NR The following definitions apply: ci = continuous insulation, Ls = liner system, NR = no (insulation) requirement. a Mass walls with a heat capacity greater than 12 Btu/ft 2 F which are unfinished or finished only on the interior do not need to be insulated. b Nonmetal framing includes framing materials other than metal with or without metal reinforcing or cladding. c Metal framing includes metal framing with or without thermal break. The all other subcategory includes operable windows, fixed windows, and non-entrance doors. Copyright Queen's Printer for Ontario 2011 Page 11 of 16

12 TABLE SB (Supersedes Table SB5.5-5 in ANSI/ASHRAEI/ESNA Standard 90.1) Building Envelope Requirements for Climate Zone 5 (A, B, C) (SI) Nonresidential Residential Semiheated Opaque Elements Assembly Insulation Assembly Insulation Assembly Insulation Max. U-Value Min. RSI-Value Max. U-Value Min. RSI-Value Max. U-Value Min.RSI-Value Roofs Insulation Entirely above Deck U ci U ci U ci Metal Building U Ls U Ls U Attic and Other U U U Walls, Above Grade Mass U ci U ci U ci Metal Building U ci U ci U ci Steel Framed U ci U ci U ci Wood Framed and Other U ci U ci U ci Wall, Below Grade Below Grade Wall C C C ci Floors Mass U ci U ci U ci Steel Joist U U U Wood Framed and Other U ci U ci U Slab-On-Grade Floors Unheated F for 600 mm F for 600 mm F for 600 mm Heated F for 900 mm ci below F for 900 mm ci below Opaque Doors Doors U U U F for 600 mm Fenestration Assembly Assembly Assembly Assembly Assembly Assembly Max. U-Value Max. SHGC Max. U-Value Max. SHGC Max. U-Value Max. SHGC Vertical Fenestration,0%-40% of Wall Nonmetal framing: all b U U U Metal fr: curtainwall / storefront c U U U Metal framing: entrance door c U U U NR Metal framing: all other c U U U-3.69 Skylight with Curb, Glass,% of Roof 0%-5.0% U U U NR Skylight with Curb, Plastic, % of Roof 0%-5.0% U U U NR Skylight without Curb, AN,% of Roof 0%-5.0% U U U NR The following definitions apply: ci = continuous insulation, Ls = liner system, NR = no (insulation) requirement. a Mass walls with a heat capacity greater than 12 Btu/ft2 of which are unfinished or finished only on the interior do not need to be insulated. b Nonmetal framing includes framing materials other than metal with or without metal reinforcing or cladding. c Metal framing includes metal framing with or without thermal break. The all other subcategory includes operable windows, fixed windows, and non-entrance doors. Copyright Queen's Printer for Ontario 2011 Page 12 of 16

13 TABLE SB (Supersedes Table SB5.5-6 in ANSI/ASHRAE/ESNA Standard 90.1) Building Envelope Requirements for Climate Zone 6 (A, B) (SI) Nonresidential Residential Semiheated Opaque Elements Assembly Insulation Assembly Insulation Assembly Insulation Max. U-Value Min. RSI-Value Max. U-Value Min. RSI-Value Max. U-Value Min.RSI-Value Roofs Insulation Entirely above Deck U ci U ci U ci Metal Building U Ls U Ls U Attic and Other U U U Walls, Above Grade Mass U ci U ci U ci Metal Building U ci U ci U ci Steel Framed U ci U ci U ci Wood Framed and Other U ci U ci U ci Wall, Below Grade Below Grade Wall C ci C ci C ci Floors Mass U ci U ci U ci Steel Joist U U ci U Wood Framed and Other U ci U ci U Slab-On-Grade Floors Unheated F for 600 mm F for 600 mm F for 600 mm Heated F for 900 mm ci below F for 900 mm ci below Opaque Doors Doors U U U F for 600 mm Fenestration Assembly Assembly Assembly Assembly Assembly Assembly Max. U-Value Max. SHGC Max. U-Value Max. SHGC Max. U-Value Max. SHGC Vertical Fenestration,0%-40% of Wall Nonmetal framing: all b U U U Metal fr: curtainwall / storefront c U U U Metal framing: entrance door c U U U NR Metal framing: all other c U U U Skylight with Curb, Glass,% of Roof 0%-5.0% U U U NR Skylight with Curb, Plastic, % of Roof 0%-5.0% U U U NR Skylight without Curb, AN,% of Roof 0%-5.0% U U U NR The following definitions apply: ci = continuous insulation, Ls = liner system, NR = no (insulation) requirement. a Mass walls with a heat capacity greater than 12 Btu/ft 2 F which are unfinished or finished only on the interior do not need to be insulated. b Nonmetal framing includes framing materials other than metal with or without metal reinforcing or cladding. c Metal framing includes metal framing with or without thermal break. The all other subcategory includes operable windows, fixed windows, and non-entrance doors. Copyright Queen's Printer for Ontario 2011 Page 13 of 16

14 TABLE SB (Supersedes Table SB5.5-7 in ANSI/ASHRAE/ESNA Standard 90.1) Building Envelope Requirements for Climate Zone 7 (SI) Nonresidential Residential Semiheated Opaque Elements Assembly Insulation Assembly Insulation Assembly Insulation Max. U-Value Min. RSI-Value Max. U-Value Min. RSI-Value Max. U-Value Min. RSI-Value Roofs Insulation Entirely above Deck U ci U ci U ci Metal Building U Ls U Ls U Attic and Other U U U Walls, Above Grade Mass U ci U ci U ci Metal Building U ci U ci U ci Steel Framed U ci U ci U ci Wood Framed and Other U ci U ci U ci Wall, Below Grade Below Grade Wall C ci C ci C ci Floors Mass U ci U U ci Steel Joist U U ci U Wood Framed and Other U ci U ci U Slab-On-Grade Floors Unheated Heated F F for 600 mm ci below 3.52 for 900 mm ci below F F for 600 mm ci below 3.52 for 900 mm ci below F F Opaque Doors Doors U U U for 600 mm 3.52 for 1200 mm Fenestration Assembly Assembly Assembly Assembly Assembly Assembly Max. U-Value Max. SHGC Max. U-Value Max. SHGC Max. U-Value Max. SHGC Vertical Fenestration,0%-40% of Wall Nonmetal framing: all b U U U Metal fr: curtainwall / storefront c U U U NR Metal framing: entrance door c U U U NR Metal framing: all other c U U U Skylight with Curb, Glass,% of Roof 0%-5.0% U U U NR Skylight with Curb, Plastic, % of Roof 0%-5.0% U U U NR Skylight without Curb, AN,% of Roof 0%-5.0% U U U NR The following definitions apply: ci = continuous insulation, Ls = liner system, NR = no (insulation) requirement. a Mass walls with a heat capacity greater than 12 Btu/ft 2 F which are unfinished or finished only on the interior do not need to be insulated. b Nonmetal framing includes framing materials other than metal with or without metal reinforcing or cladding. c Metal framing includes metal framing with or without thermal break. The all other subcategory includes operable windows, fixed windows, and non-entrance doors. Copyright Queen's Printer for Ontario 2011 Page 14 of 16

15 RATIONALE FOR CHANGE Problem / General Background Code users have indicated the need to know what enhancements to energy efficiency in large buildings and small nonresidential buildings can be expected in the future (beyond the December 31, 2011 requirements). For this reason, potential new energy conservation benchmarks for buildings are being considered. A new benchmark would come into force on December 31, For large buildings and small non-residential buildings, one option would increase energy efficiency by 10% and the other would increase it by 13%, compared to the December 31, 2011 benchmark. Each option would also include reference to a compliance path that involves enhancements to the ASHRAE standard, with details being set out in an amended Supplementary Standard SB-10. This proposal outlines the potential changes to SB-10 for each option. The new requirements would allow an extended period for industry to learn about the new requirements, revise design templates as required and build capacity. Cost implications and the availability of technology were among the factors considered in selecting options for consideration. Justification / Explanation The Green Energy and Green Economy Act, 2009 signalled a commitment to using the Building Code to support energy priorities. That legislation amended the Building Code Act, 1992 to clarify that conservation was a purpose of the Code, provided for regular reviews of the energy conservation provisions of the Code, and authorized the establishment of the Building Code Energy Advisory Council. This potential change discussed above would support Ontario s priorities related to: Reducing electricity consumption in support of Ontario s Long Term Energy Plan; Supporting the Province s climate change strategy by reducing the amount of greenhouse gases produced by the operation of buildings, and reduce greenhouse gas emissions through energy efficiency requirements; and Supporting the growth of a green economy by creating a market for energy efficient and renewable energy technologies. Cost / Benefit Implications Higher capital costs are anticipated in meeting the selected benchmark. Further flexibility, however, is provided for the design of large buildings, which could reduce costs. Moreover, resulting operating costs could decrease. Enforcement Implications Building officials would benefit from training. Copyright Queen's Printer for Ontario 2011 Page 15 of 16

16 Who is Affected Building officials, designers, builders, manufacturers and building owners. Objective-Based Analysis Provision Objective Functional Statement Copyright Queen's Printer for Ontario 2011 Page 16 of 16