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HVAC - House study guideServices and systems

Code structure, objectives and farm heating scope

Division A (with exclusions), Division B Part 1 (except frost depth), farm building HVAC scope, SA-1 and SB-1.

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Values this chapter turns on

January value used for winter design temperature
2.5%
January value used for winter design temperature
maximum building height for Part 9
3 storeys
maximum building height for Part 9
maximum building area for Part 9
600 m²
maximum building area for Part 9
to comply: acceptable or alternative solution
2 routes
to comply: acceptable or alternative solution

The HVAC - House exam is open book, and the fastest candidates know where things live before they open the code. This chapter covers the frame around every HVAC answer: how the Building Code is split into Divisions, how to prove compliance, which Part applies to which building, the objectives and functional statements, the climate data you design to, and the short rule that sends farm building HVAC to Part 6.

Application, compliance and definitions

The code applies to the construction, demolition, change of use and occupancy of buildings, and it covers factory-built buildings as well as site-built ones OBC Div. A 1.1.1.1.OBC Div. A 1.1.1.1. Application of this Code(1) This Code applies to the construction, demolition, change of use and occupancy of buildings. (2) This Code applies to both site-built and factory-constructed buildings. (See Note A-1.1.1.1.(2)).

There are two ways to comply OBC Div. A 1.2.1.1.OBC Div. A 1.2.1.1. Compliance with this Code(1) Compliance with this Code shall be achieved by (a) complying with the applicable acceptable solutions in Division B (See Note A-1.2.1.1.(1)(a)), or (b) using alternative solutions that will achieve at least the minimum level of performance required by the applicable acceptable solutions in respect of the…:

Route What it means
Acceptable solution Meet the prescriptive requirement in Division B (Parts 2 to 12)
Alternative solution Use something else that achieves at least the same level of performance, measured against the objectives and functional statements attributed in Supplementary Standard SA-1

Two other Division A rules come up in HVAC questions:

  • Every material, appliance, system and piece of equipment installed to meet the code must have the characteristics needed to perform its intended function OBC Div. A 1.2.2.1.OBC Div. A 1.2.2.1. Characteristics of Materials, Appliances, Systems and Equipment(1) All materials, appliances, systems and equipment installed to meet the requirements of this Code shall possess the necessary characteristics to perform their intended functions when installed in a building..
  • Used materials, appliances and equipment may be reused if they meet the code requirements for new ones and are satisfactory for the intended use OBC Div. A 1.2.2.3.OBC Div. A 1.2.2.3. Used Materials, Appliances and Equipment(1) Unless otherwise specified, recycled materials in building products may be used, and used materials, appliances and equipment are permitted to be reused when they meet the requirements of this Code for new materials and are satisfactory for the intended use..

Which Part applies. Part 1, Part 7 and Part 12 of Division B apply to all buildings OBC Div. A 1.3.3.1.OBC Div. A 1.3.3.1. Application of Parts 1, 7 and 12(1) Part 1 of Division B applies to all buildings covered in this Code. (See Article 1.1.1.1.) (2) Subject to Article 1.3.3.3B., Parts 7 and 12 of Division B apply to all buildings covered in this Code.. Part 9 applies to buildings of 3 storeys or less in building height with a building area of not more than 600 m², used for residential (other than retirement homes), business and personal services, mercantile, or medium- and low-hazard industrial occupancies OBC Div. A 1.3.3.3.OBC Div. A 1.3.3.3. Application of Part 9(1) Subject to Article 1.3.3.3B., Part 9 of Division B applies to all buildings described in Article 1.1.1.1. of 3 storeys or less in building height, having a building area not exceeding 600 m², and used for major occupancies classified as (a) reserved (b) Group C, residential occupancies other than buildings used…. Larger buildings, and any assembly, care, detention or high-hazard industrial building, fall under Parts 3 to 6 OBC Div. A 1.3.3.2.OBC Div. A 1.3.3.2. Application of Parts 3, 4, 5 and 6(1) Subject to Articles 1.3.3.1A., 1.3.3.3B., Parts 3, 4, 5, and 6 of Division B apply to all buildings described in Article 1.1.1.1. and (a) classified as post-disaster buildings, (b) used for major occupancies classified as (i) Group A, assembly occupancies, (ii) Group B, care, care and treatment or detention…. A house is almost always Part 9, but Part 9 often sends you back to Part 6 for HVAC items it does not cover itself.

Definitions. Words in italics in the code are defined in Article 1.4.1.2. of Division A, which is split by term in our citations (for example fire damperOBC Div. A 1.4.1.2.(1) Fire damperFire damper means a closure consisting of a damper that is installed in an air distribution system or a wall or floor assembly and that is normally held open but designed to close automatically in the event of a fire in order to maintain the integrity of the fire separation. and direct-ventedOBC Div. A 1.4.1.2.(1) Direct-ventedDirect-vented (as applying to a fuel-fired space- or water-heating appliance) means an appliance and its venting system in which all the combustion air is supplied directly from the outdoors and the products of combustion are vented directly to the outdoors via independent, totally enclosed passageways connected…). Words that are not defined take their ordinary meaning in the trade or profession that uses them OBC Div. A 1.4.1.1.OBC Div. A 1.4.1.1. Non-defined Terms(1) Words and phrases used in this Code that are not included in the list of definitions in Articles 1.4.1.2., 1.4.1.3. and 1.4.1.4. and are not defined in another provision of this Code shall have the meanings that are commonly assigned to them in the context in which they are used, taking into account the…. HVAC definitions worth flagging in your copy: appliance, furnace, forced-air furnace, space heater, unit heater, supply duct, return duct, exhaust duct, plenum, flue, flue pipe, chimney, direct-vented, mechanically vented, service room and carbon monoxide alarm.

Conflicts. When the code and a referenced document (for example a CSA or NFPA standard) disagree, the code governs OBC Div. A 1.5.1.2.OBC Div. A 1.5.1.2. Conflicting Requirements(1) In case of conflict between the provisions of this Code and those of a referenced document, the provisions of this Code shall govern.. The ventilation rules repeat this idea for manufacturer instructions: where those conflict with Subsection 9.32.3., the code wins.

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Objectives and functional statements

Division A Part 2 lists the objectives and Part 3 lists the functional statements OBC Div. A 2.2.1.1.OBC Div. A 2.2.1.1. Objectives(1) The objectives of this Code are as follows: (See Note A-2.2.1.1.(1)) OS Safety An objective of this Code is to limit the probability that, as a result of the design or construction of the building, a person in or adjacent to the building will be exposed to an unacceptable risk of injury. OS1 Fire Safety An… OBC Div. A 3.2.1.1.OBC Div. A 3.2.1.1. Functional Statements(1) The objectives of this Code are achieved by measures, such as those described in the acceptable solutions in Division B, that are intended to allow the building or its elements to perform the following functions: (See Note A-3.2.1.1.(1)) F01 To minimize the risk of accidental ignition. F02 To limit the severity…. You do not need to memorise them, but you should know the HVAC ones well enough to recognise them in a question about alternative solutions.

Code Plain meaning Typical HVAC link
OH1.1 Inadequate indoor air quality Principal ventilation fan, outdoor air supply
OH1.2 Inadequate thermal comfort Indoor design temperatures
OH1.3 Contact with moisture Exhaust to outdoors, duct insulation
OS3.2 Contact with hot surfaces or substances Radiator and pipe surface temperatures
OR1.2 Consumption of energy Part 12 and SB-12
F50 Provide air suitable for breathing Mechanical ventilation
F51 Maintain appropriate air and surface temperatures Heating capacity
F53 Maintain appropriate indoor/outdoor air pressure differences Depressurization protection
F131 Limit excessive energy consumption Energy efficiency

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Climatic data (SB-1)

Climatic values for design come from Supplementary Standard SB-1, and the outside winter design temperature is the January 2.5% value OBC Div. B 1.1.3.1.OBC Div. B 1.1.3.1. Climatic and Seismic Values(1) The climatic and seismic values required for the design of buildings under this Code shall be in conformance with the climatic and seismic values provided in MMAH Supplementary Standard SB-1, "Climatic and Seismic Data". (2) The outside winter design temperatures determined from MMAH Supplementary Standard SB-1…. Part 9 repeats this for HVAC design: use SB-1 with the 2.5 percent criteria OBC Div. B 9.33.3.2.OBC Div. B 9.33.3.2. Outdoor Design Temperatures(1) The outdoor conditions to be used in designing heating, ventilating and air-conditioning systems shall be the appropriate values for the location as set out in MMAH Supplementary Standard SB-1, "Climatic and Seismic Data," using 2.5 percent design temperature criteria..

The SB-1 notes explain the logic. The January design temperature is a temperature that only a small percentage of January hours fall below, so systems are not sized for the single worst night in decades SB-1 noteOBC SB-1 January Design TemperaturesA building and its heating system should be designed to maintain the inside temperature at some pre-determined level. To achieve this, it is necessary to know the most severe weather conditions under which the system will be expected to function satisfactorily. Failure to maintain the inside temperature at the…. The 2.5% value is the one ordinarily used for heating design; the 1% value is for cases where indoor temperature control is more critical. Heating degree-days are counted below 18°C SB-1 noteOBC SB-1 Heating Degree-DaysThe rate of consumption of fuel or energy required to keep the interior of a small building at 21°C when the outside air temperature is below 18°C is roughly proportional to the difference between 18°C and the outside temperature. Wind speed, solar radiation, the extent to which the building is exposed to these…. Degree-days matter for SB-12, which splits Ontario into Zone 1 (less than 5000 degree-days) and Zone 2 (5000 or more).

Sample values from SB-1 Table 2 SB-1 Table 2OBC SB-1 Table 2: Climatic Design DataTable 2: Climatic Design Data Location | Elevation, m | Design Temperature — January — 2.5%, °C | Design Temperature — January — 1%, °C | Design Temperature — July 2.5% — Dry, °C | Design Temperature — July 2.5% — Wet, °C | Degree Days Below 18°C | 15 Min Rain, mm | One Day Rain, 1/50, mm | Annual Rain, mm | Moisture…:

Location January 2.5% Degree-days below 18°C
Windsor -16°C 3400
Toronto (City Hall) -18°C 3520
Ottawa (City Hall) -25°C 4440
Sudbury -28°C 5180
Thunder Bay -31°C 5650

Note that depth of frost penetration (Article 1.1.3.2.) is not on this exam.

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Farm buildings: HVAC general

HVAC systems in farm buildings must conform to Part 6, with a short list of exemptions OBC Div. B 2.4.1.1.OBC Div. B 2.4.1.1. Application(1) Except as provided in Sentence (2), and except as otherwise provided in this Section, systems and equipment for heating, ventilating and air-conditioning services in farm buildings shall conform to Part 6. (2) farm buildings need not comply with Articles 6.3.1.3. and 6.4.1.1. and Sentences 6.3.2.8.(3) and…. A farm building need not comply with:

  • Article 6.3.1.3. (storage and repair garage ventilation),
  • Article 6.4.1.1. (location of appliances),
  • Sentence 6.3.2.8.(3) (tempering of makeup air), and
  • Sentence 6.3.2.10.(13) (preventing condensation in exhaust ducts passing through unconditioned space).

Part 12 energy efficiency design also does not apply to farm buildings (see Chapter 12).

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Common traps

  • Mixing up the 2.5% and 1% January values. The code tells you to use 2.5%.
  • Assuming Part 9 governs every HVAC rule in a house. Part 9 sends large systems (rated heat input over 120 kW, or systems serving more than one dwelling unit outside 9.33.1.1.) to Part 6.
  • Thinking a manufacturer's instruction or a referenced standard can override the code. It cannot.
  • Forgetting that alternative solutions are measured against the objectives and functional statements in SA-1, not against "good practice" in general.

Chapter review

Chapter at a glance

One line per section: the idea to carry into the exam. Then the answers that most often catch candidates out.

Usual exam traps

  • Mixing up the 2.5% and 1% January values. The code tells you to use 2.5%.
  • Assuming Part 9 governs every HVAC rule in a house. Part 9 sends large systems (rated heat input over 120 kW, or systems serving more than one dwelling unit outside 9.33.1.1.) to Part 6.
  • Thinking a manufacturer's instruction or a referenced standard can override the code. It cannot.
  • Forgetting that alternative solutions are measured against the objectives and functional statements in SA-1, not against "good practice" in general.

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Questions on Code structure, objectives and farm heating scope, in the exam format, every answer explained and cited to its article. Sign in to start; a free account gets the free questions.

Practice this chapterHVAC - House calculations

Code cited in this chapter

Based on the official 2024 Building Code Compendium on ontario.ca.

© King's Printer for Ontario, 2024. Reproduced with permission.

  • OBC Div. A 1.1.1.1. Application of this Code

    (1)This Code applies to the construction, demolition, change of use and occupancy of buildings.

    (2)This Code applies to both site-built and factory-constructed buildings. (See Note A-1.1.1.1.(2))

    Open OBC Div. A 1.1.1.1. in the code viewer
  • OBC Div. A 1.2.1.1. Compliance with this Code

    (1)Compliance with this Code shall be achieved by

    (a)complying with the applicable acceptable solutions in Division B (See Note A-1.2.1.1.(1)(a)), or

    (b)using alternative solutions that will achieve at least the minimum level of performance required by the applicable acceptable solutions in respect of the objectives and functional statements attributed to the applicable acceptable solutions in Ministry of Municipal Affairs and Housing (MMAH) Supplementary Standard SA-1, "Objectives and Functional Statements Attributed to the Acceptable Solutions." (See Note A-1.2.1.1.(1)(b))

    (2)For the purposes of Clause (1)(b), the level of performance in respect of a functional statement refers to the performance of the functional statement as it relates to the objective with which it is associated in MMAH Supplementary Standard SA-1, "Objectives and Functional Statements Attributed to the Acceptable Solutions."

    Open OBC Div. A 1.2.1.1. in the code viewer
  • OBC Div. A 1.2.2.1. Characteristics of Materials, Appliances, Systems and Equipment

    (1)All materials, appliances, systems and equipment installed to meet the requirements of this Code shall possess the necessary characteristics to perform their intended functions when installed in a building.

    Open OBC Div. A 1.2.2.1. in the code viewer
  • OBC Div. A 1.2.2.3. Used Materials, Appliances and Equipment

    (1)Unless otherwise specified, recycled materials in building products may be used, and used materials, appliances and equipment are permitted to be reused when they meet the requirements of this Code for new materials and are satisfactory for the intended use.

    Open OBC Div. A 1.2.2.3. in the code viewer
  • OBC Div. A 1.3.3.1. Application of Parts 1, 7 and 12

    (1)Part 1 of Division B applies to all buildings covered in this Code. (See Article 1.1.1.1.)

    (2)Subject to Article 1.3.3.3B., Parts 7 and 12 of Division B apply to all buildings covered in this Code.

    Open OBC Div. A 1.3.3.1. in the code viewer
  • OBC Div. A 1.3.3.3. Application of Part 9

    (1)Subject to Article 1.3.3.3B., Part 9 of Division B applies to all buildings described in Article 1.1.1.1. of 3 storeys or less in building height, having a building area not exceeding 600 m², and used for major occupancies classified as

    (a)reserved

    (b)Group C, residential occupancies other than buildings used for retirement homes, (See Note A-9.1.1.1.(1) of Division B)

    (c)Group D, business and personal services occupancies,

    (d)Group E, mercantile occupancies, or

    (e)Group F, Divisions 2 and 3, medium- and low-hazard industrial occupancies.

    Open OBC Div. A 1.3.3.3. in the code viewer
  • OBC Div. A 1.3.3.2. Application of Parts 3, 4, 5 and 6

    (1)Subject to Articles 1.3.3.1A., 1.3.3.3B., Parts 3, 4, 5, and 6 of Division B apply to all buildings described in Article 1.1.1.1. and

    (a)classified as post-disaster buildings,

    (b)used for major occupancies classified as

    (i)Group A, assembly occupancies,

    (ii)Group B, care, care and treatment or detention occupancies, or

    (iii)Group F, Division 1, high-hazard industrial occupancies, or

    (c)exceeding 600 m² in building area or exceeding 3 storeys in building height used for major occupancies classified as

    (i)Group C, residential occupancies,

    (ii)Group D, business and personal services occupancies,

    (iii)Group E, mercantile occupancies, or

    (iv)Group F, Divisions 2 and 3, medium- and low-hazard industrial occupancies.

    (2)Subject to Articles 1.3.3.1A. and 1.3.3.3B., Part 4 of Division B applies to

    (a)a retaining wall exceeding 1,000 mm in exposed height adjacent to

    (i)public property,

    (ii)access to a building, or

    (iii)private property to which the public is admitted,

    (b)a pedestrian bridge appurtenant to a building,

    (c)a crane runway,

    (d)an exterior storage tank and its supporting structure that is not regulated by the Technical Standards and Safety Act, 2000,

    (e)signs regulated by Section 3.15. of Division B that are not structurally supported by a building,

    (f)a structure that supports a wind turbine generator having a rated output of more than 3 kW,

    (g)an outdoor pool that has a water depth greater than 3.5 m at any point, and

    (h)a permanent solid nutrient storage facility with supporting walls exceeding 1,000 mm in exposed height.

    (3)Section 3.11. of Division B applies to public pools.

    (4)Section 3.12. of Division B applies to public spas.

    (5)Section 3.15. of Division B applies to signs.

    (6)Section 3.17. of Division B applies to demountable stages and demountable support structures.

    Open OBC Div. A 1.3.3.2. in the code viewer
  • OBC Div. A 1.4.1.2.(1) Fire damper

    Fire damper means a closure consisting of a damper that is installed in an air distribution system or a wall or floor assembly and that is normally held open but designed to close automatically in the event of a fire in order to maintain the integrity of the fire separation.

    Open OBC Div. A 1.4.1.2.(1) in the code viewer
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  • OBC Div. A 1.4.1.2.(1) Direct-vented

    Direct-vented (as applying to a fuel-fired space- or water-heating appliance) means an appliance and its venting system in which all the combustion air is supplied directly from the outdoors and the products of combustion are vented directly to the outdoors via independent, totally enclosed passageways connected directly to the appliance.

    Open OBC Div. A 1.4.1.2.(1) in the code viewer
  • OBC Div. A 1.4.1.1. Non-defined Terms

    (1)Words and phrases used in this Code that are not included in the list of definitions in Articles 1.4.1.2., 1.4.1.3. and 1.4.1.4. and are not defined in another provision of this Code shall have the meanings that are commonly assigned to them in the context in which they are used, taking into account the specialized use of terms by the various trades and professions to which the terminology applies.

    (2)Where objectives and functional statements are referred to in this Code, they shall be the objectives and functional statements described in Parts 2 and 3.

    (3)Where acceptable solutions are referred to in this Code, they shall be the provisions stated in Parts 2 to 12 of Division B.

    (4)Where alternative solutions are referred to in this Code, they shall be the alternative solutions mentioned in Clause 1.2.1.1.(1)(b).

    Open OBC Div. A 1.4.1.1. in the code viewer
  • OBC Div. A 1.5.1.2. Conflicting Requirements

    (1)In case of conflict between the provisions of this Code and those of a referenced document, the provisions of this Code shall govern.

    Open OBC Div. A 1.5.1.2. in the code viewer
  • OBC Div. A 2.2.1.1. Objectives

    (1)The objectives of this Code are as follows: (See Note A-2.2.1.1.(1))

    OS Safety

    An objective of this Code is to limit the probability that, as a result of the design or construction of the building, a person in or adjacent to the building will be exposed to an unacceptable risk of injury.

    OS1 Fire Safety

    An objective of this Code is to limit the probability that, as a result of the design or construction of the building, a person in or adjacent to the building will be exposed to an unacceptable risk of injury due to fire. The risks of injury due to fire addressed in this Code are those caused by—

    OS1.1 – fire or explosion occurring

    OS1.2 – fire or explosion impacting areas beyond its point of origin

    OS1.3 – collapse of physical elements due to a fire or explosion

    OS1.4 – fire safety systems failing to function as expected

    OS1.5 – persons being delayed in or impeded from moving to a safe place during a fire emergency

    OS2 Structural Safety

    An objective of this Code is to limit the probability that, as a result of the design or construction of the building, a person in or adjacent to the building will be exposed to an unacceptable risk of injury due to structural failure. The risks of injury due to structural failure addressed in this Code are those caused by—

    OS2.1 – loads bearing on the building elements that exceed their loadbearing capacity

    OS2.2 – loads bearing on the building that exceed the loadbearing properties of the supporting medium

    OS2.3 – damage to or deterioration of building elements

    OS2.4 – vibration or deflection of building elements

    OS2.5 – instability of the building or part thereof

    OS2.6 – collapse of the excavation

    OS3 Safety in Use

    An objective of this Code is to limit the probability that, as a result of the design or construction of the building, a person in or adjacent to the building will be exposed to an unacceptable risk of injury due to hazards. The risks of injury due to hazards addressed in this Code are those caused by—

    OS3.1 – tripping, slipping, falling, contact, drowning or collision

    OS3.2 – contact with hot surfaces or substances

    OS3.3 – contact with energized equipment

    OS3.4 – exposure to hazardous substances

    OS3.5 – exposure to high levels of sound from fire alarm systems

    OS3.6 – persons becoming trapped in confined spaces

    OS3.7 – persons being delayed in or impeded from moving to a safe place during an emergency (See Note A-2.2.1.1.(1))

    OS4 Resistance to Unwanted Entry

    An objective of this Code is to limit the probability that, as a result of the design or construction of the building, a person in the building will be exposed to an unacceptable risk of injury due to the building's low level of resistance to unwanted entry. The risks of injury due to unwanted entry addressed in this Code are those caused by—

    OS4.1 – intruders being able to force their way through locked doors or windows

    OS4.2 – occupants being unable to identify potential intruders as such

    OH Health

    An objective of this Code is to limit the probability that, as a result of the design or construction of the building, a person will be exposed to an unacceptable risk of illness.

    OH1 Indoor Conditions

    An objective of this Code is to limit the probability that, as a result of the design or construction of the building, a person in the building will be exposed to an unacceptable risk of illness due to indoor conditions. The risks of illness due to indoor conditions addressed in this Code are those caused by—

    OH1.1 – inadequate indoor air quality

    OH1.2 – inadequate thermal comfort

    OH1.3 – contact with moisture

    OH2 Sanitation

    An objective of this Code is to limit the probability that, as a result of the design or construction of the building, a person in the building will be exposed to an unacceptable risk of illness due to unsanitary conditions. The risks of illness due to unsanitary conditions addressed in this Code are those caused by—

    OH2.1 – exposure to human or domestic waste

    OH2.2 – consumption of contaminated water

    OH2.3 – inadequate facilities for personal hygiene

    OH2.4 – contact with contaminated surfaces

    OH2.5 – contact with vermin and insects

    OH2.6 – unsanitary conditions caused by exposure to human or domestic waste

    OH3 Noise Protection

    An objective of this Code is to limit the probability that, as a result of the design or construction of the building, a person in the building will be exposed to an unacceptable risk of illness due to high levels of sound originating in adjacent spaces in the building. The risks of illness due to high levels of sound addressed in this Code are those caused by—

    OH3.1 – exposure to airborne sound transmitted through assemblies separating dwelling units from adjacent spaces in the building.

    OH4 Vibration and Deflection Limitation

    An objective of this Code is to limit the probability that, as a result of the design or construction of the building, a person in the building will be exposed to an unacceptable risk of illness due to high levels of vibration or deflection of building elements.

    OH5 Hazardous Substances Containment

    An objective of this Code is to limit the probability that, as a result of the design or construction of the building, the public will be exposed to an unacceptable risk of illness due to the release of hazardous substances from the building.

    OH6 Privacy

    An objective of this Code is to limit the probability that, as a result of the design or construction of a building, a person in the building will be provided with an unacceptable level of privacy.

    OH7 View to the Outdoors

    An objective of this Code is to limit the probability that, as a result of the design or construction of the building, a person in the building will be unable to experience a view to the outdoors.

    OA Accessibility

    An objective of this Code is to limit the probability that, as a result of the design or construction of the building, a person with a physical or sensory limitation will be unacceptably impeded from accessing or using the building or its facilities.

    OA1 Barrier-Free Path of Travel

    An objective of this Code is to limit the probability that, as a result of the design or construction of the building, a person with a physical or sensory limitation will be unacceptably impeded from accessing the building or circulating within it.

    OA2 Barrier-Free Facilities

    An objective of this Code is to limit the probability that, as a result of the design or construction of the building, a person with a physical or sensory limitation will be unacceptably impeded from using the building's facilities.

    OP Fire, Structural, Water and Sewage Protection of Buildings

    An objective of this Code is to limit the probability that, as a result of the design or construction of the building, the building or adjacent buildings will be exposed to an unacceptable risk of damage due to fire or structural insufficiency, or the building or part thereof will be exposed to an unacceptable risk of loss of use also due to structural insufficiency.

    OP1 Fire Protection of the Building

    An objective of this Code is to limit the probability that, as a result of its design or construction, the building will be exposed to an unacceptable risk of damage due to fire. The risks of damage due to fire addressed in this Code are those caused by—

    OP1.1 – fire or explosion occurring

    OP1.2 – fire or explosion impacting areas beyond its point of origin

    OP1.3 – collapse of physical elements due to a fire or explosion

    OP1.4 – fire safety systems failing to function as expected

    OP2 Structural Sufficiency of the Building

    An objective of this Code is to limit the probability that, as a result of its design or construction, the building or part thereof will be exposed to an unacceptable risk of damage or loss of use due to structural failure or lack of structural serviceability. The risks of damage and of loss of use due to structural failure or lack of structural serviceability addressed in this Code are those caused by—

    OP2.1 – loads bearing on the building elements that exceed their loadbearing capacity

    OP2.2 – loads bearing on the building that exceed the loadbearing properties of the supporting medium

    OP2.3 – damage to or deterioration of building elements

    OP2.4 – vibration or deflection of building elements

    OP2.5 – instability of the building or part thereof

    OP2.6 – instability or movement of the supporting medium

    OP3 Protection of Adjacent Buildings from Fire

    An objective of this Code is to limit the probability that, as a result of the design or construction of the building, adjacent buildings will be exposed to an unacceptable risk of damage due to fire. The risks of damage to adjacent buildings due to fire addressed in this Code are those caused by—

    OP3.1 – fire or explosion impacting areas beyond the building of origin

    OP4 Protection of Adjacent Buildings from Structural Damage

    An objective of this Code is to limit the probability that, as a result of the design or construction of the building, adjacent buildings will be exposed to an unacceptable risk of structural damage. The risks of structural damage to adjacent buildings addressed in this Code are those caused by—

    OP4.1 – settlement of the medium supporting adjacent buildings

    OP4.2 – collapse of the building or portion thereof onto adjacent buildings

    OP4.3 – impact of the building on adjacent buildings

    OP4.4 – collapse of the excavation

    OP5 Water and Sewage Protection of Buildings and Facilities

    An objective of this Code is to limit the probability that, as a result of the design or construction of a building, a building will be exposed to unacceptable risk of damage due to leakage of service water or sewage.

    OR Resource Conservation

    An objective of this Code is to limit the probability that, as a result of the design or construction of a building, a resource will be exposed to an unacceptable risk of depletion or the capacity of the infrastructure supporting the use, treatment or disposal of the resource will be exposed to an unacceptable risk of being exceeded.

    OR1 Water and Energy Conservation

    An objective of this Code is to limit the probability that, as a result of the design or construction of a building, a resource will be exposed to an unacceptable risk of depletion. The risks of resource depletion addressed in this Code are those caused by—

    OR1.1 – the consumption of water

    OR1.2 – the consumption of energy

    OR2 Infrastructure Capacity

    An objective of this Code is to limit the probability that, as a result of the design or construction of a building, the capacity of the infrastructure supporting the use, treatment or disposal of a resource will be exposed to an unacceptable risk of being exceeded. The risks of exceeding capacity addressed in this Code are those caused by—

    OR2.1 – excessive demand on the infrastructure

    OE Environmental Integrity

    An objective of this Code is to limit the probability that, as a result of the design or construction or operation of the building, the natural environment will be exposed to an unacceptable risk of degradation.

    OE1 Air Quality

    An objective of this Code is to limit the probability that, as a result of the design or construction of a building, the natural environment will be exposed to an unacceptable risk of degradation due to emissions of greenhouse gases into the air. The risks of degradation addressed in this Code are those caused by—

    OE1.1 – emissions of greenhouse gases into the air

    OE1.2 – the release of contaminants, other than greenhouse gases, into the air

    OE2 Water and Soil Quality

    An objective of this Code is to limit the probability that, as a result of the design or construction of a building, the natural environment will be exposed to an unacceptable risk of degradation due to excessive release of contaminants into water or soil.

    OC Conservation of Buildings

    An objective of this Code is to limit the probability that, as a result of the extension, material alteration or repair of an existing building or a change in use of an existing building, the existing building cannot be acceptably conserved.

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  • OBC Div. A 3.2.1.1. Functional Statements

    (1)The objectives of this Code are achieved by measures, such as those described in the acceptable solutions in Division B, that are intended to allow the building or its elements to perform the following functions: (See Note A-3.2.1.1.(1))

    F01 To minimize the risk of accidental ignition.

    F02 To limit the severity and effects of fire or explosions.

    F03 To retard the effects of fire on areas beyond its point of origin.

    F04 To retard failure or collapse due to the effects of fire.

    F05 To retard the effects of fire on emergency egress facilities.

    F06 To retard the effects of fire on facilities for notification, suppression and emergency response.

    F10 To facilitate the timely movement of persons to a safe place in an emergency.

    F11 To notify persons, in a timely manner, of the need to take action in an emergency.

    F12 To facilitate emergency response.

    F13 To notify emergency responders, in a timely manner, of the need to take action in an emergency.

    F20 To support and withstand expected loads and forces.

    F21 To limit or accommodate dimensional change.

    F22 To limit movement under expected loads and forces.

    F23 To maintain equipment in place during structural movement.

    F30 To minimize the risk of injury to persons as a result of tripping, slipping, falling, contact, drowning or collision.

    F31 To minimize the risk of injury to persons as a result of contact with hot surfaces or substances.

    F32 To minimize the risk of injury to persons as a result of contact with energized equipment.

    F33 To limit the level of sound of a fire alarm system.

    F34 To resist or discourage unwanted access or entry.

    F35 To facilitate the identification of potential intruders.

    F36 To minimize the risk that persons will be trapped in confined spaces.

    F40 To limit the level of contaminants.

    F41 To minimize the risk of generation of contaminants.

    F42 To resist the entry of vermin and insects.

    F43 To minimize the risk of release of hazardous substances.

    F44 To limit the spread of hazardous substances beyond their point of release.

    F45 To minimize the risk of the spread of diseases through communal shower facilities.

    F46 To minimize the risk of contamination of potable water.

    F50 To provide air suitable for breathing.

    F51 To maintain appropriate air and surface temperatures.

    F52 To maintain appropriate relative humidity.

    F53 To maintain appropriate indoor/outdoor air pressure differences.

    F54 To limit drafts.

    F55 To resist the transfer of air through environmental separators.

    F56 To limit the transmission of airborne sound into a dwelling unit from spaces elsewhere in the building.

    F60 To control the accumulation and pressure of water on and in the ground.

    F61 To resist the ingress of precipitation, water or moisture from the exterior or from the ground.

    F62 To facilitate the dissipation of water and moisture from the building.

    F63 To limit moisture condensation.

    F70 To provide potable water.

    F71 To provide facilities for personal hygiene.

    F72 To provide facilities for the sanitary disposal of human and domestic wastes.

    F73 To facilitate access to and circulation in the building and its facilities by persons with physical or sensory limitations.

    F74 To facilitate the use of the building's facilities by persons with physical or sensory limitations.

    F80 To resist deterioration resulting from expected service conditions.

    F81 To minimize the risk of malfunction, interference, damage, tampering, lack of use or misuse.

    F82 To minimize the risk of inadequate performance due to improper maintenance or lack of maintenance.

    F101 To limit unwanted visual exposure.

    F102 To provide a view to the outdoors in buildings.

    F110 To control the release of contaminants into soil, groundwater, surface water, and air.

    F111 To minimize the risk of malfunction, damage or failure of a sewage system.

    F112 To provide adequate treatment of sanitary sewage and effluent.

    F113 To minimize the risk of injury as a result of contact with sanitary sewage or partially treated effluent.

    F120 To minimize the risk of injury to persons entering or exiting the pool, as a result of unfamiliarity with the pool.

    F121 To minimize the risk of injury to persons using the pool, as a result of unfamiliarity with the pool.

    F122 To minimize the risk of contamination of pool water.

    F123 To facilitate timely response to incapacitated pool users.

    F124 To minimize the risk of entrapment or injury to a person within the pool, as a result of water, air or vacuum action.

    F130 To limit excessive water consumption.

    F131 To limit excessive energy consumption.

    F132 To limit excessive demand on the infrastructure.

    F133 To limit excessive peak demand on the infrastructure.

    F140 To facilitate the reuse and material alteration and repair of existing buildings.

    F150 To limit excessive emissions of greenhouse gases into the air.

    F151 To limit the excessive release of contaminants, other than greenhouse gases, into the air.

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  • OBC Div. B 1.1.3.1. Climatic and Seismic Values

    (1)The climatic and seismic values required for the design of buildings under this Code shall be in conformance with the climatic and seismic values provided in MMAH Supplementary Standard SB-1, "Climatic and Seismic Data".

    (2)The outside winter design temperatures determined from MMAH Supplementary Standard SB-1, "Climatic and Seismic Data", shall be those listed for the January 2.5% values. (See Note A-1.1.3.1.(2))

    Open OBC Div. B 1.1.3.1. in the code viewer
  • OBC Div. B 9.33.3.2. Outdoor Design Temperatures

    (1)The outdoor conditions to be used in designing heating, ventilating and air-conditioning systems shall be the appropriate values for the location as set out in MMAH Supplementary Standard SB-1, "Climatic and Seismic Data," using 2.5 percent design temperature criteria.

    Open OBC Div. B 9.33.3.2. in the code viewer
  • OBC SB-1 January Design Temperatures

    A building and its heating system should be designed to maintain the inside temperature at some pre-determined level. To achieve this, it is necessary to know the most severe weather conditions under which the system will be expected to function satisfactorily. Failure to maintain the inside temperature at the pre-determined level will not usually be serious if the temperature drop is not great and if the duration is not long. The outside conditions used for design should, therefore, not be the most severe in many years, but should be the somewhat less severe conditions that are occasionally but not greatly exceeded.

    The January design temperatures are based on an analysis of January air temperatures only. Wind and solar radiation also affect the inside temperature of most buildings and may need to be considered for energy-efficient design.

    The January design temperature is defined as the lowest temperature at or below which only a certain small percentage of the hourly outside air temperatures in January occur. In the past, stations with records from all or part of the period 1951-1966 formed the basis for calculation of the 2.5 and 1% January temperatures. Where necessary, the data were adjusted for consistency. Since most of the temperatures were observed at airports, design values for the core areas of large cities could be 1° or 2°C milder, although the values for the fringe areas are probably about the same as for the airports. No adjustments were made for this urban heat island effect. The design values for the next 20 to 30 years will probably differ from these tabulated values due to year-to-year climate variability and global climate change resulting from the impact of human on atmospheric chemistry.

    The design temperatures were reviewed and updated using hourly temperature observations from stations for a 25-year period up to 2006 with at least 8 years of complete data. These data are consistent with data shown for Canadian locations in the 2009 Handbook of Fundamentals(3) published by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE). The most recent 25 years of record were used to provide a balance between accounting for trends in the climate and the sampling variation owing to year-to-year variation. The 1% and 2.5% values used for the design conditions represent percentiles of the cumulative frequency distribution of hourly temperatures and correspond to January temperatures that are colder for 8 and 19 hours, respectively, on average over the long term.

    The 2.5% January design temperature is the value ordinarily used in the design of heating systems. In special cases, when the control of inside temperature is more critical, the 1% value may be used. Other temperature-dependent climatic design parameters may be considered for future issues of this document.

    Open OBC SB-1 in the code viewer
  • OBC SB-1 Heating Degree-Days

    The rate of consumption of fuel or energy required to keep the interior of a small building at 21°C when the outside air temperature is below 18°C is roughly proportional to the difference between 18°C and the outside temperature. Wind speed, solar radiation, the extent to which the building is exposed to these elements and the internal heat sources also affect the heat required and may have to be considered for energy-efficient design. For average conditions of wind, radiation, exposure, and internal sources, however, the proportionality with the temperature difference generally still holds.

    Since the fuel required is also proportional to the duration of the cold weather, a convenient method of combining these elements of temperature and time is to add the differences between 18°C and the mean temperature for every day in the year when the mean temperature is below 18°C. It is assumed that no heat is required when the mean outside air temperature for the day is 18°C or higher.

    Although more sophisticated computer simulations using other forms of weather data have now almost completely replaced degree-day-based calculation methods for estimating annual heating energy consumption, degree-days remain a useful indicator of relative severity of climate and can form the basis for certain climate-related code requirements.

    The degree-days below 18°C were compiled for stations for the 25-year period ending in 2006. This analysis period is consistent with the one used to derive the design temperatures described above and with the approach used by ASHRAE.(1)

    A difference of only one Celsius degree in the mean annual temperature will cause a difference of 250 to 350 in the Celsius degree-days. Since differences of 0.5 of a Celsius degree in the mean annual temperature are quite likely to occur between two stations in the same town, heating degree-days cannot be relied on to an accuracy of less than about 100 degree-days.

    Heating degree-day values for the core areas of larger cities can be 200 to 400 degree-days less (warmer) than for the surrounding fringe areas. The observed degree-days, which are based on daily temperature observations, are often most representative of rural settings or the fringe areas of cities.

    Open OBC SB-1 in the code viewer
  • OBC SB-1 Table 2: Climatic Design Data

    Table 2: Climatic Design Data

    Location | Elevation, m | Design Temperature — January — 2.5%, °C | Design Temperature — January — 1%, °C | Design Temperature — July 2.5% — Dry, °C | Design Temperature — July 2.5% — Wet, °C | Degree Days Below 18°C | 15 Min Rain, mm | One Day Rain, 1/50, mm | Annual Rain, mm | Moisture Index | Annual Total Precipitation, mm | Driving Rain Wind Pressures, Pa, 1/5 | Snow Load, kPa, 1/50 — Ss | Snow Load, kPa, 1/50 — Sr | Hourly Wind Pressures, kPa — 1/10 | Hourly Wind Pressures, kPa — 1/50

    Ailsa Craig | 230 | -17 | -19 | 30 | 23 | 3840 | 25 | 103 | 800 | 0.9 | 950 | 180 | 2.2 | 0.4 | 0.37 | 0.48

    Ajax | 95 | -20 | -22 | 30 | 23 | 3820 | 23 | 92 | 760 | 0.9 | 825 | 160 | 1.0 | 0.4 | 0.37 | 0.48

    Alexandria | 80 | -24 | -26 | 30 | 23 | 4600 | 25 | 103 | 800 | 0.9 | 975 | 160 | 2.4 | 0.4 | 0.31 | 0.4

    Alliston | 220 | -23 | -25 | 29 | 23 | 4200 | 28 | 113 | 690 | 0.8 | 875 | 120 | 2.0 | 0.4 | 0.28 | 0.36

    Almonte | 120 | -26 | -28 | 30 | 23 | 4620 | 25 | 97 | 730 | 0.8 | 800 | 140 | 2.5 | 0.4 | 0.32 | 0.41

    Armstrong | 340 | -37 | -40 | 28 | 21 | 6500 | 23 | 97 | 525 | 0.8 | 725 | 100 | 2.7 | 0.4 | 0.22 | 0.3

    Arnprior | 85 | -27 | -29 | 30 | 23 | 4680 | 23 | 86 | 630 | 0.8 | 775 | 140 | 2.5 | 0.4 | 0.29 | 0.37

    Atikokan | 400 | -33 | -35 | 29 | 22 | 5750 | 25 | 103 | 570 | 0.8 | 760 | 100 | 2.4 | 0.3 | 0.22 | 0.3

    Attawapiskat | 10 | -37 | -39 | 28 | 21 | 7100 | 18 | 81 | 450 | 0.8 | 650 | 160 | 2.8 | 0.3 | 0.3 | 0.41

    Aurora | 270 | -21 | -23 | 30 | 23 | 4210 | 28 | 108 | 700 | 0.8 | 800 | 140 | 2.0 | 0.4 | 0.34 | 0.44

    Bancroft | 365 | -28 | -31 | 29 | 23 | 4740 | 25 | 92 | 720 | 0.9 | 900 | 100 | 3.1 | 0.4 | 0.25 | 0.32

    Barrie | 245 | -24 | -26 | 29 | 23 | 4380 | 28 | 97 | 700 | 0.8 | 900 | 120 | 2.5 | 0.4 | 0.28 | 0.36

    Barriefield | 100 | -22 | -24 | 28 | 23 | 3990 | 23 | 108 | 780 | 1.0 | 950 | 160 | 2.1 | 0.4 | 0.37 | 0.47

    Beaverton | 240 | -24 | -26 | 30 | 23 | 4300 | 25 | 108 | 720 | 0.9 | 950 | 120 | 2.2 | 0.4 | 0.28 | 0.36

    Belleville | 90 | -22 | -24 | 29 | 23 | 3910 | 23 | 97 | 760 | 0.9 | 850 | 180 | 1.7 | 0.4 | 0.34 | 0.43

    Belmont | 260 | -17 | -19 | 30 | 24 | 3840 | 25 | 97 | 850 | 1.0 | 950 | 180 | 1.7 | 0.4 | 0.37 | 0.47

    Big Trout Lake (Kitchenuhmaykoosib) | 215 | -38 | -40 | 26 | 20 | 7450 | 18 | 92 | 400 | 0.75 | 600 | 150 | 3.2 | 0.2 | 0.31 | 0.42

    Borden (CBF) | 225 | -23 | -25 | 29 | 23 | 4300 | 28 | 103 | 690 | 0.82 | 875 | 120 | 2.2 | 0.4 | 0.28 | 0.36

    Bracebridge | 310 | -26 | -28 | 29 | 23 | 4800 | 25 | 103 | 830 | 1.0 | 1050 | 120 | 3.1 | 0.4 | 0.27 | 0.35

    Bradford | 240 | -23 | -25 | 30 | 23 | 4280 | 28 | 108 | 680 | 0.8 | 800 | 120 | 2.1 | 0.4 | 0.28 | 0.36

    Brampton | 215 | -19 | -21 | 30 | 23 | 4100 | 28 | 119 | 720 | 0.8 | 820 | 140 | 1.3 | 0.4 | 0.34 | 0.44

    Brantford | 205 | -18 | -20 | 30 | 23 | 3900 | 23 | 103 | 780 | 0.9 | 850 | 160 | 1.3 | 0.4 | 0.33 | 0.42

    Brighton | 95 | -21 | -23 | 29 | 23 | 4000 | 23 | 94 | 760 | 0.9 | 850 | 160 | 1.6 | 0.4 | 0.37 | 0.48

    Brockville | 85 | -23 | -25 | 29 | 23 | 4060 | 25 | 103 | 770 | 0.9 | 975 | 180 | 2.2 | 0.4 | 0.34 | 0.44

    Burk's Falls | 305 | -26 | -28 | 29 | 22 | 5020 | 25 | 97 | 810 | 0.9 | 1010 | 120 | 2.7 | 0.4 | 0.27 | 0.35

    Burlington | 80 | -17 | -19 | 31 | 23 | 3740 | 23 | 103 | 770 | 0.9 | 850 | 160 | 1.1 | 0.4 | 0.36 | 0.46

    Caledon | 425 | -21 | -23 | 30 | 23 | 4450 | 28 | 119 | 730 | 0.84 | 875 | 140 | 2.2 | 0.4 | 0.31 | 0.4

    Cambridge | 295 | -18 | -20 | 29 | 23 | 4100 | 25 | 113 | 800 | 0.9 | 890 | 160 | 1.6 | 0.4 | 0.28 | 0.36

    Campbellford | 150 | -23 | -26 | 30 | 23 | 4280 | 25 | 97 | 730 | 0.9 | 850 | 160 | 1.7 | 0.4 | 0.32 | 0.41

    Cannington | 255 | -24 | -26 | 30 | 23 | 4310 | 25 | 108 | 740 | 0.9 | 950 | 120 | 2.2 | 0.4 | 0.28 | 0.36

    Carleton Place | 135 | -25 | -27 | 30 | 23 | 4600 | 25 | 97 | 730 | 0.8 | 850 | 160 | 2.5 | 0.4 | 0.32 | 0.41

    Cavan | 200 | -23 | -25 | 30 | 23 | 4400 | 25 | 97 | 740 | 0.9 | 850 | 140 | 2.0 | 0.4 | 0.34 | 0.44

    Centralia | 260 | -17 | -19 | 30 | 23 | 3800 | 25 | 103 | 820 | 1.0 | 1000 | 180 | 2.3 | 0.4 | 0.37 | 0.48

    Chapleau | 425 | -35 | -38 | 27 | 21 | 5900 | 20 | 97 | 530 | 0.7 | 850 | 80 | 3.6 | 0.4 | 0.23 | 0.3

    Chatham | 180 | -16 | -18 | 31 | 24 | 3470 | 28 | 103 | 800 | 0.9 | 850 | 180 | 1.0 | 0.4 | 0.34 | 0.43

    Chesley | 275 | -19 | -21 | 29 | 22 | 4320 | 28 | 103 | 810 | 0.9 | 1125 | 140 | 2.8 | 0.4 | 0.35 | 0.45

    Clinton | 280 | -17 | -19 | 29 | 23 | 4150 | 25 | 103 | 810 | 0.9 | 1000 | 160 | 2.6 | 0.4 | 0.36 | 0.46

    Coboconk | 270 | -25 | -27 | 30 | 23 | 4500 | 25 | 108 | 740 | 0.9 | 950 | 120 | 2.5 | 0.4 | 0.27 | 0.35

    Cobourg | 90 | -21 | -23 | 29 | 23 | 3980 | 23 | 94 | 760 | 0.9 | 825 | 160 | 1.2 | 0.4 | 0.38 | 0.49

    Cochrane | 245 | -34 | -36 | 29 | 21 | 6200 | 20 | 92 | 575 | 0.8 | 875 | 80 | 2.8 | 0.3 | 0.27 | 0.35

    Colborne | 105 | -21 | -23 | 29 | 23 | 3980 | 23 | 94 | 760 | 0.9 | 850 | 160 | 1.6 | 0.4 | 0.38 | 0.49

    Collingwood | 190 | -21 | -23 | 29 | 23 | 4180 | 28 | 97 | 720 | 0.9 | 950 | 160 | 2.7 | 0.4 | 0.3 | 0.39

    Cornwall | 35 | -23 | -25 | 30 | 23 | 4250 | 25 | 103 | 780 | 0.9 | 960 | 180 | 2.2 | 0.4 | 0.32 | 0.41

    Corunna | 185 | -16 | -18 | 31 | 24 | 3600 | 25 | 100 | 760 | 0.9 | 800 | 180 | 1.0 | 0.4 | 0.37 | 0.47

    Deep River | 145 | -29 | -32 | 30 | 22 | 4900 | 23 | 92 | 650 | 0.8 | 850 | 100 | 2.5 | 0.4 | 0.27 | 0.35

    Deseronto | 85 | -22 | -24 | 29 | 23 | 4070 | 23 | 92 | 760 | 0.9 | 900 | 160 | 1.9 | 0.4 | 0.34 | 0.43

    Dorchester | 260 | -18 | -20 | 30 | 24 | 3900 | 28 | 103 | 850 | 1.0 | 950 | 180 | 1.9 | 0.4 | 0.37 | 0.47

    Dorion | 200 | -33 | -35 | 28 | 21 | 5950 | 20 | 103 | 550 | 0.8 | 725 | 160 | 2.8 | 0.4 | 0.29 | 0.39

    Dresden | 185 | -16 | -18 | 31 | 24 | 3750 | 28 | 97 | 760 | 0.8 | 820 | 180 | 1.0 | 0.4 | 0.34 | 0.43

    Dryden | 370 | -34 | -36 | 28 | 22 | 5850 | 25 | 97 | 550 | 0.7 | 700 | 120 | 2.4 | 0.3 | 0.22 | 0.3

    Dundalk | 525 | -22 | -24 | 29 | 22 | 4700 | 28 | 108 | 750 | 0.9 | 1080 | 150 | 3.2 | 0.4 | 0.33 | 0.42

    Dunnville | 175 | -15 | -17 | 30 | 24 | 3660 | 23 | 108 | 830 | 1.0 | 950 | 160 | 2.0 | 0.4 | 0.36 | 0.46

    Durham | 340 | -20 | -22 | 29 | 22 | 4340 | 28 | 103 | 815 | 0.9 | 1025 | 140 | 2.8 | 0.4 | 0.34 | 0.44

    Dutton | 225 | -16 | -18 | 31 | 24 | 3700 | 28 | 92 | 850 | 1.0 | 925 | 180 | 1.3 | 0.4 | 0.37 | 0.47

    Earlton | 245 | -33 | -36 | 29 | 22 | 5730 | 23 | 92 | 560 | 0.8 | 820 | 120 | 3.1 | 0.4 | 0.35 | 0.45

    Edison | 365 | -34 | -36 | 28 | 22 | 5740 | 25 | 108 | 510 | 0.7 | 680 | 120 | 2.4 | 0.3 | 0.23 | 0.31

    Elliot Lake | 380 | -26 | -28 | 29 | 21 | 4950 | 23 | 108 | 630 | 0.8 | 950 | 160 | 2.9 | 0.4 | 0.3 | 0.38

    Elmvale | 220 | -24 | -26 | 29 | 23 | 4200 | 28 | 97 | 720 | 0.9 | 950 | 140 | 2.6 | 0.4 | 0.28 | 0.36

    Embro | 310 | -19 | -21 | 30 | 23 | 3950 | 28 | 113 | 830 | 0.9 | 950 | 160 | 2.0 | 0.4 | 0.37 | 0.48

    Englehart | 205 | -33 | -36 | 29 | 22 | 5800 | 23 | 92 | 600 | 0.8 | 880 | 100 | 2.8 | 0.4 | 0.32 | 0.41

    Espanola | 220 | -25 | -27 | 29 | 21 | 4920 | 23 | 108 | 650 | 0.8 | 840 | 160 | 2.3 | 0.4 | 0.33 | 0.42

    Exeter | 265 | -17 | -19 | 30 | 23 | 3900 | 25 | 113 | 810 | 0.9 | 975 | 180 | 2.4 | 0.4 | 0.37 | 0.48

    Fenelon Falls | 260 | -25 | -27 | 30 | 23 | 4440 | 25 | 108 | 730 | 0.9 | 950 | 120 | 2.3 | 0.4 | 0.28 | 0.36

    Fergus | 400 | -20 | -22 | 29 | 23 | 4300 | 28 | 108 | 760 | 0.9 | 925 | 160 | 2.2 | 0.4 | 0.28 | 0.36

    Forest | 215 | -16 | -18 | 31 | 23 | 3740 | 25 | 103 | 810 | 1.0 | 875 | 160 | 2.0 | 0.4 | 0.37 | 0.48

    Fort Erie | 180 | -15 | -17 | 30 | 24 | 3650 | 23 | 108 | 860 | 1.0 | 1020 | 160 | 2.3 | 0.4 | 0.36 | 0.46

    Fort Erie (Ridgeway) | 190 | -15 | -17 | 30 | 24 | 3600 | 25 | 108 | 860 | 1.0 | 1000 | 160 | 2.3 | 0.4 | 0.36 | 0.46

    Fort Frances | 340 | -33 | -35 | 29 | 22 | 5440 | 25 | 108 | 570 | 0.7 | 725 | 120 | 2.3 | 0.3 | 0.23 | 0.31

    Gananoque | 80 | -22 | -24 | 28 | 23 | 4010 | 23 | 103 | 760 | 0.9 | 900 | 180 | 2.1 | 0.4 | 0.37 | 0.47

    Geraldton | 345 | -36 | -39 | 28 | 21 | 6450 | 20 | 86 | 550 | 0.8 | 725 | 100 | 2.9 | 0.4 | 0.22 | 0.3

    Glencoe | 215 | -16 | -18 | 31 | 24 | 3680 | 28 | 103 | 800 | 0.9 | 925 | 180 | 1.5 | 0.4 | 0.34 | 0.43

    Goderich | 185 | -16 | -18 | 29 | 23 | 4000 | 25 | 92 | 810 | 1.0 | 950 | 180 | 2.4 | 0.4 | 0.37 | 0.48

    Gore Bay | 205 | -24 | -26 | 28 | 22 | 4700 | 23 | 92 | 640 | 0.8 | 860 | 160 | 2.6 | 0.4 | 0.34 | 0.44

    Graham | 495 | -35 | -37 | 29 | 22 | 5940 | 23 | 97 | 570 | 0.8 | 750 | 140 | 2.6 | 0.3 | 0.22 | 0.3

    Gravenhurst (Muskoka Airport) | 255 | -26 | -28 | 29 | 23 | 4760 | 25 | 103 | 790 | 0.9 | 1050 | 120 | 2.7 | 0.4 | 0.28 | 0.36

    Grimsby | 85 | -16 | -18 | 30 | 23 | 3520 | 23 | 108 | 760 | 0.9 | 875 | 160 | 0.9 | 0.4 | 0.36 | 0.46

    Guelph | 340 | -19 | -21 | 29 | 23 | 4270 | 28 | 103 | 770 | 0.9 | 875 | 140 | 1.9 | 0.4 | 0.28 | 0.36

    Guthrie | 280 | -24 | -26 | 29 | 23 | 4300 | 28 | 103 | 700 | 0.8 | 950 | 120 | 2.5 | 0.4 | 0.28 | 0.36

    Haileybury | 210 | -32 | -35 | 30 | 22 | 5600 | 23 | 92 | 590 | 0.8 | 820 | 120 | 2.4 | 0.4 | 0.34 | 0.44

    Haldimand (Caledonia) | 190 | -18 | -20 | 30 | 23 | 3750 | 23 | 108 | 810 | 0.9 | 875 | 160 | 1.2 | 0.4 | 0.34 | 0.44

    Haldimand (Hagersville) | 215 | -17 | -19 | 30 | 23 | 3760 | 25 | 97 | 840 | 1.0 | 875 | 160 | 1.3 | 0.4 | 0.36 | 0.46

    Haliburton | 335 | -27 | -29 | 29 | 23 | 4840 | 25 | 92 | 780 | 0.9 | 980 | 100 | 2.9 | 0.4 | 0.27 | 0.35

    Halton Hills (Georgetown) | 255 | -19 | -21 | 30 | 23 | 4200 | 28 | 119 | 750 | 0.8 | 850 | 140 | 1.4 | 0.4 | 0.29 | 0.37

    Hamilton — Above Escarpment - West of John C. Munro Int'l Airport | 240 | -17 | -19 | 31 | 23 | 3460 | 23 | 108 | 810 | 0.9 | 875 | 160 | 1.5 | 0.4 | 0.36 | 0.46

    Hamilton — Above Escarpment - East of John C. Munro Int'l Airport | 200 | -17 | -19 | 31 | 23 | 3460 | 23 | 108 | 810 | 0.9 | 875 | 160 | 1.3 | 0.4 | 0.36 | 0.46

    Hamilton — Below Escarpment - West of Highway 403 | 90 | -17 | -19 | 31 | 23 | 3460 | 23 | 108 | 810 | 0.9 | 875 | 160 | 1.1 | 0.4 | 0.36 | 0.46

    Hamilton — Below Escarpment - East of Highway 403 | 90 | -17 | -19 | 31 | 23 | 3460 | 23 | 108 | 810 | 0.9 | 875 | 160 | 1.1 | 0.4 | 0.36 | 0.46

    Hanover | 270 | -19 | -21 | 29 | 22 | 4300 | 28 | 103 | 790 | 0.9 | 1050 | 140 | 2.6 | 0.4 | 0.34 | 0.44

    Hastings | 200 | -24 | -26 | 30 | 23 | 4280 | 25 | 92 | 730 | 0.9 | 840 | 140 | 2.0 | 0.4 | 0.32 | 0.41

    Hawkesbury | 50 | -25 | -27 | 30 | 23 | 4610 | 23 | 103 | 800 | 0.9 | 925 | 160 | 2.3 | 0.4 | 0.32 | 0.41

    Hearst | 245 | -35 | -37 | 29 | 21 | 6450 | 20 | 86 | 520 | 0.7 | 825 | 80 | 2.8 | 0.3 | 0.23 | 0.3

    Honey Harbour | 180 | -24 | -26 | 29 | 23 | 4300 | 25 | 97 | 710 | 0.9 | 1050 | 160 | 2.7 | 0.4 | 0.3 | 0.39

    Hornepayne | 360 | -37 | -40 | 28 | 21 | 6340 | 20 | 93 | 420 | 0.7 | 750 | 80 | 3.3 | 0.4 | 0.22 | 0.3

    Huntsville | 335 | -26 | -29 | 29 | 22 | 4850 | 25 | 103 | 800 | 0.9 | 1000 | 120 | 2.9 | 0.4 | 0.27 | 0.35

    Ingersoll | 280 | -18 | -20 | 30 | 23 | 3920 | 28 | 108 | 840 | 1.0 | 950 | 180 | 1.7 | 0.4 | 0.37 | 0.48

    Iroquois Falls | 275 | -33 | -36 | 29 | 21 | 6100 | 20 | 86 | 575 | 0.8 | 825 | 100 | 2.9 | 0.3 | 0.29 | 0.37

    Jellicoe | 330 | -36 | -39 | 28 | 21 | 6400 | 20 | 86 | 550 | 0.8 | 750 | 100 | 2.7 | 0.4 | 0.22 | 0.3

    Kapuskasing | 245 | -34 | -36 | 29 | 21 | 6250 | 20 | 86 | 550 | 0.8 | 825 | 100 | 3.0 | 0.3 | 0.24 | 0.31

    Kemptville | 90 | -25 | -27 | 30 | 23 | 4540 | 25 | 92 | 750 | 0.9 | 925 | 160 | 2.3 | 0.4 | 0.32 | 0.41

    Kenora | 370 | -33 | -35 | 28 | 22 | 5630 | 25 | 113 | 515 | 0.6 | 630 | 120 | 2.5 | 0.3 | 0.23 | 0.31

    Killaloe | 185 | -28 | -31 | 30 | 22 | 4960 | 23 | 86 | 680 | 0.8 | 825 | 120 | 2.7 | 0.4 | 0.27 | 0.35

    Kincardine | 190 | -17 | -19 | 28 | 22 | 3890 | 25 | 92 | 800 | 1.0 | 950 | 180 | 2.6 | 0.4 | 0.37 | 0.48

    Kingston | 80 | -22 | -24 | 28 | 23 | 4000 | 23 | 108 | 780 | 1.0 | 950 | 180 | 2.1 | 0.4 | 0.37 | 0.47

    Kinmount | 295 | -26 | -28 | 29 | 23 | 4600 | 25 | 108 | 750 | 0.9 | 950 | 120 | 2.7 | 0.4 | 0.27 | 0.35

    Kirkland Lake | 325 | -33 | -36 | 29 | 22 | 6000 | 23 | 92 | 600 | 0.8 | 875 | 100 | 2.9 | 0.3 | 0.3 | 0.39

    Kitchener | 335 | -19 | -21 | 29 | 23 | 4200 | 28 | 119 | 780 | 0.9 | 925 | 140 | 2.0 | 0.4 | 0.29 | 0.37

    Lakefield | 240 | -24 | -26 | 30 | 23 | 4330 | 25 | 92 | 720 | 0.9 | 850 | 140 | 2.2 | 0.4 | 0.3 | 0.38

    Lansdowne House | 240 | -38 | -40 | 28 | 21 | 7150 | 23 | 92 | 500 | 0.8 | 680 | 140 | 3.0 | 0.2 | 0.24 | 0.32

    Leamington | 190 | -15 | -17 | 31 | 24 | 3400 | 28 | 113 | 800 | 0.9 | 875 | 180 | 0.8 | 0.4 | 0.37 | 0.47

    Lindsay | 265 | -24 | -26 | 30 | 23 | 4320 | 25 | 103 | 720 | 0.8 | 850 | 140 | 2.3 | 0.4 | 0.3 | 0.38

    Lion's Head | 185 | -19 | -21 | 27 | 22 | 4300 | 25 | 103 | 700 | 0.9 | 950 | 180 | 2.7 | 0.4 | 0.37 | 0.48

    Listowel | 380 | -19 | -21 | 29 | 23 | 4300 | 28 | 119 | 800 | 0.9 | 1000 | 160 | 2.6 | 0.4 | 0.34 | 0.43

    London | 245 | -18 | -20 | 30 | 24 | 3900 | 28 | 103 | 825 | 0.9 | 975 | 180 | 1.9 | 0.4 | 0.37 | 0.47

    Lucan | 300 | -17 | -19 | 30 | 23 | 3900 | 25 | 113 | 810 | 0.9 | 1000 | 180 | 2.3 | 0.4 | 0.37 | 0.48

    Maitland | 85 | -23 | -25 | 29 | 23 | 4080 | 25 | 103 | 770 | 0.9 | 975 | 180 | 2.2 | 0.4 | 0.34 | 0.44

    Markdale | 425 | -20 | -22 | 29 | 22 | 4500 | 28 | 103 | 820 | 0.9 | 1050 | 160 | 3.2 | 0.4 | 0.32 | 0.41

    Markham | 175 | -21 | -23 | 31 | 24 | 4000 | 25 | 86 | 720 | 0.8 | 825 | 140 | 1.3 | 0.4 | 0.34 | 0.44

    Martin | 485 | -35 | -37 | 29 | 22 | 5900 | 25 | 103 | 560 | 0.8 | 750 | 120 | 2.6 | 0.3 | 0.22 | 0.3

    Matheson | 265 | -33 | -36 | 29 | 21 | 6080 | 20 | 86 | 580 | 0.8 | 825 | 100 | 2.8 | 0.3 | 0.3 | 0.39

    Mattawa | 165 | -29 | -31 | 30 | 22 | 5050 | 23 | 86 | 700 | 0.9 | 875 | 100 | 2.1 | 0.4 | 0.25 | 0.32

    Midland | 190 | -24 | -26 | 29 | 23 | 4200 | 25 | 97 | 740 | 0.9 | 1060 | 160 | 2.7 | 0.4 | 0.3 | 0.39

    Milton | 200 | -18 | -20 | 30 | 23 | 3920 | 25 | 125 | 750 | 0.9 | 850 | 160 | 1.3 | 0.4 | 0.34 | 0.43

    Milverton | 370 | -19 | -21 | 29 | 23 | 4200 | 28 | 108 | 800 | 0.9 | 1050 | 160 | 2.4 | 0.4 | 0.34 | 0.43

    Minden | 270 | -27 | -29 | 29 | 23 | 4640 | 25 | 97 | 780 | 0.9 | 1010 | 100 | 2.7 | 0.4 | 0.27 | 0.35

    Mississauga | 160 | -18 | -20 | 30 | 23 | 3880 | 25 | 113 | 720 | 0.9 | 800 | 160 | 1.1 | 0.4 | 0.34 | 0.44

    Mississauga (Lester B. Pearson International Airport) | 170 | -20 | -22 | 31 | 24 | 3890 | 26 | 108 | 685 | 0.8 | 790 | 160 | 1.1 | 0.4 | 0.34 | 0.44

    Mississauga (Port Credit) | 75 | -18 | -20 | 29 | 23 | 3780 | 25 | 108 | 720 | 0.9 | 800 | 160 | 0.9 | 0.4 | 0.37 | 0.48

    Mitchell | 335 | -18 | -20 | 29 | 23 | 4100 | 28 | 113 | 810 | 0.9 | 1050 | 160 | 2.4 | 0.4 | 0.35 | 0.45

    Moosonee | 10 | -36 | -38 | 28 | 22 | 6800 | 18 | 81 | 500 | 0.8 | 700 | 160 | 2.7 | 0.3 | 0.26 | 0.35

    Morrisburg | 75 | -23 | -25 | 30 | 23 | 4370 | 25 | 103 | 800 | 0.9 | 950 | 180 | 2.3 | 0.4 | 0.32 | 0.41

    Mount Forest | 420 | -21 | -24 | 28 | 22 | 4700 | 28 | 103 | 740 | 0.9 | 940 | 140 | 2.7 | 0.4 | 0.32 | 0.41

    Nakina | 325 | -36 | -38 | 28 | 21 | 6500 | 20 | 86 | 540 | 0.8 | 750 | 100 | 2.8 | 0.4 | 0.22 | 0.3

    Nanticoke (Jarvis) | 205 | -17 | -18 | 30 | 23 | 3700 | 28 | 108 | 840 | 1.0 | 900 | 160 | 1.4 | 0.4 | 0.37 | 0.48

    Nanticoke (Port Dover) | 180 | -15 | -17 | 30 | 24 | 3600 | 25 | 108 | 860 | 1.0 | 950 | 140 | 1.2 | 0.4 | 0.37 | 0.48

    Napanee | 90 | -22 | -24 | 29 | 23 | 4140 | 23 | 92 | 770 | 0.9 | 900 | 160 | 1.9 | 0.4 | 0.34 | 0.43

    Newcastle | 115 | -20 | -22 | 30 | 23 | 3990 | 23 | 86 | 760 | 0.9 | 830 | 160 | 1.5 | 0.4 | 0.37 | 0.48

    Newcastle (Bowmanville) | 95 | -20 | -22 | 30 | 23 | 4000 | 23 | 86 | 760 | 0.9 | 830 | 160 | 1.4 | 0.4 | 0.37 | 0.48

    New Liskeard | 180 | -32 | -35 | 30 | 22 | 5570 | 23 | 92 | 570 | 0.8 | 810 | 100 | 2.6 | 0.4 | 0.34 | 0.43

    Newmarket | 185 | -22 | -24 | 30 | 23 | 4260 | 28 | 108 | 700 | 0.8 | 800 | 140 | 2.0 | 0.4 | 0.3 | 0.38

    Niagara Falls | 210 | -16 | -18 | 30 | 23 | 3600 | 23 | 96 | 810 | 0.9 | 950 | 160 | 1.8 | 0.4 | 0.34 | 0.43

    North Bay | 210 | -28 | -30 | 28 | 22 | 5150 | 25 | 95 | 775 | 0.9 | 975 | 120 | 2.2 | 0.4 | 0.27 | 0.34

    Norwood | 225 | -24 | -26 | 30 | 23 | 4320 | 25 | 92 | 720 | 0.8 | 850 | 120 | 2.1 | 0.4 | 0.32 | 0.41

    Oakville | 90 | -18 | -20 | 30 | 23 | 3760 | 23 | 97 | 750 | 0.9 | 850 | 160 | 1.1 | 0.4 | 0.37 | 0.47

    Orangeville | 430 | -21 | -23 | 29 | 23 | 4450 | 28 | 108 | 730 | 0.8 | 875 | 140 | 2.3 | 0.4 | 0.28 | 0.36

    Orillia | 230 | -25 | -27 | 29 | 23 | 4260 | 25 | 103 | 740 | 0.9 | 1000 | 120 | 2.4 | 0.4 | 0.28 | 0.36

    Oshawa | 110 | -19 | -21 | 30 | 23 | 3860 | 23 | 86 | 760 | 0.9 | 875 | 160 | 1.4 | 0.4 | 0.37 | 0.48

    Ottawa (Barrhaven) | 98 | -25 | -27 | 30 | 23 | 4500 | 25 | 92 | 750 | 0.8 | 900 | 160 | 2.4 | 0.4 | 0.32 | 0.41

    Ottawa (City Hall) | 70 | -25 | -27 | 30 | 23 | 4440 | 23 | 86 | 750 | 0.8 | 900 | 160 | 2.4 | 0.4 | 0.32 | 0.41

    Ottawa (Kanata) | 98 | -25 | -27 | 30 | 23 | 4520 | 25 | 92 | 730 | 0.8 | 900 | 160 | 2.5 | 0.4 | 0.32 | 0.41

    Ottawa (MacDonald-Cartier Int'l Airport) | 125 | -25 | -27 | 30 | 23 | 4500 | 24 | 89 | 750 | 0.8 | 900 | 160 | 2.4 | 0.4 | 0.32 | 0.41

    Ottawa (Orleans) | 70 | -26 | -28 | 30 | 23 | 4500 | 23 | 91 | 750 | 0.8 | 900 | 160 | 2.4 | 0.4 | 0.32 | 0.41

    Owen Sound | 215 | -19 | -21 | 29 | 22 | 4030 | 28 | 113 | 760 | 0.9 | 1075 | 160 | 2.8 | 0.4 | 0.34 | 0.44

    Pagwa River | 185 | -35 | -37 | 28 | 21 | 6500 | 20 | 86 | 540 | 0.8 | 825 | 80 | 2.7 | 0.4 | 0.22 | 0.3

    Paris | 245 | -18 | -20 | 30 | 23 | 4000 | 23 | 96 | 790 | 0.9 | 925 | 160 | 1.4 | 0.4 | 0.33 | 0.42

    Parkhill | 205 | -16 | -18 | 31 | 23 | 3800 | 25 | 103 | 800 | 0.9 | 925 | 180 | 2.1 | 0.4 | 0.37 | 0.48

    Parry Sound | 215 | -24 | -26 | 28 | 22 | 4640 | 23 | 97 | 820 | 1.0 | 1050 | 160 | 2.8 | 0.4 | 0.3 | 0.39

    Pelham (Fonthill) | 230 | -15 | -17 | 30 | 23 | 3690 | 23 | 96 | 820 | 0.9 | 950 | 160 | 2.1 | 0.4 | 0.33 | 0.42

    Pembroke | 125 | -28 | -31 | 30 | 23 | 4980 | 23 | 105 | 640 | 0.8 | 825 | 100 | 2.5 | 0.4 | 0.27 | 0.35

    Penetanguishene | 220 | -24 | -26 | 29 | 23 | 4200 | 25 | 97 | 720 | 0.9 | 1050 | 160 | 2.8 | 0.4 | 0.3 | 0.39

    Perth | 130 | -25 | -27 | 30 | 23 | 4540 | 25 | 92 | 730 | 0.8 | 900 | 140 | 2.3 | 0.4 | 0.32 | 0.41

    Petawawa | 135 | -29 | -31 | 30 | 23 | 4980 | 23 | 92 | 640 | 0.8 | 825 | 100 | 2.6 | 0.4 | 0.27 | 0.35

    Peterborough | 200 | -23 | -25 | 30 | 23 | 4400 | 25 | 92 | 710 | 0.8 | 840 | 140 | 2.0 | 0.4 | 0.32 | 0.41

    Petrolia | 195 | -16 | -18 | 31 | 24 | 3640 | 25 | 108 | 810 | 0.9 | 920 | 180 | 1.3 | 0.4 | 0.37 | 0.47

    Pickering Zone 1 | 85 | -19 | -21 | 30 | 23 | 3800 | 23 | 92 | 730 | 0.9 | 825 | 140 | 1.0 | 0.4 | 0.37 | 0.48

    Pickering Zone 2 | 175 | -20 | -22 | 30 | 23 | 3900 | 23 | 92 | 730 | 0.9 | 825 | 140 | 1.5 | 0.4 | 0.37 | 0.48

    Pickering Zone 3 | 255 | -21 | -23 | 30 | 23 | 4010 | 23 | 86 | 770 | 0.91 | 850 | 140 | 1.9 | 0.4 | 0.35 | 0.45

    Pickering Zone 4 | 315 | -22 | -24 | 30 | 23 | 4200 | 23 | 86 | 770 | 0.91 | 850 | 140 | 2.3 | 0.4 | 0.35 | 0.45

    Picton | 95 | -21 | -23 | 29 | 23 | 3980 | 23 | 92 | 770 | 0.9 | 940 | 160 | 2.0 | 0.4 | 0.38 | 0.49

    Plattsville | 300 | -19 | -21 | 29 | 23 | 4150 | 28 | 103 | 820 | 0.9 | 950 | 140 | 1.9 | 0.4 | 0.33 | 0.42

    Point Alexander | 150 | -29 | -32 | 30 | 22 | 4960 | 23 | 92 | 650 | 0.8 | 850 | 100 | 2.5 | 0.4 | 0.27 | 0.35

    Port Burwell | 195 | -15 | -17 | 30 | 24 | 3800 | 25 | 92 | 930 | 1.1 | 1000 | 180 | 1.2 | 0.4 | 0.37 | 0.47

    Port Colborne | 180 | -15 | -17 | 30 | 24 | 3600 | 23 | 108 | 850 | 1.0 | 1000 | 160 | 2.1 | 0.4 | 0.36 | 0.46

    Port Elgin | 205 | -17 | -19 | 28 | 22 | 4100 | 25 | 92 | 790 | 0.9 | 850 | 180 | 2.8 | 0.4 | 0.37 | 0.48

    Port Hope | 100 | -21 | -23 | 29 | 23 | 3970 | 23 | 94 | 760 | 0.9 | 825 | 180 | 1.2 | 0.4 | 0.37 | 0.48

    Port Perry | 270 | -22 | -24 | 30 | 23 | 4260 | 25 | 97 | 720 | 0.8 | 850 | 140 | 2.4 | 0.4 | 0.34 | 0.44

    Port Stanley | 180 | -15 | -17 | 31 | 24 | 3850 | 25 | 92 | 940 | 1.1 | 975 | 180 | 1.2 | 0.4 | 0.37 | 0.47

    Prescott | 90 | -23 | -25 | 29 | 23 | 4120 | 25 | 103 | 770 | 0.9 | 975 | 180 | 2.2 | 0.4 | 0.34 | 0.44

    Princeton | 280 | -18 | -20 | 30 | 23 | 4000 | 25 | 97 | 810 | 0.9 | 925 | 160 | 1.5 | 0.4 | 0.33 | 0.42

    Raith | 475 | -34 | -37 | 28 | 22 | 5900 | 23 | 97 | 570 | 0.8 | 750 | 120 | 2.7 | 0.4 | 0.22 | 0.3

    Rayside-Balfour (Chelmsford) | 270 | -28 | -30 | 29 | 21 | 5200 | 25 | 92 | 650 | 0.8 | 850 | 180 | 2.5 | 0.4 | 0.35 | 0.45

    Red Lake | 360 | -35 | -37 | 28 | 21 | 6220 | 20 | 92 | 470 | 0.7 | 630 | 120 | 2.6 | 0.3 | 0.22 | 0.3

    Renfrew | 115 | -27 | -30 | 30 | 23 | 4900 | 23 | 97 | 620 | 0.8 | 810 | 140 | 2.5 | 0.4 | 0.27 | 0.35

    Richmond Hill | 230 | -21 | -23 | 31 | 24 | 4000 | 25 | 97 | 740 | 0.8 | 850 | 140 | 1.5 | 0.4 | 0.34 | 0.44

    Rockland | 50 | -26 | -28 | 30 | 23 | 4600 | 23 | 92 | 780 | 0.9 | 950 | 160 | 2.4 | 0.4 | 0.31 | 0.4

    Sarnia | 190 | -16 | -18 | 31 | 24 | 3750 | 25 | 100 | 750 | 0.9 | 825 | 180 | 1.1 | 0.4 | 0.37 | 0.47

    Sault Ste. Marie | 190 | -25 | -28 | 29 | 22 | 4960 | 23 | 97 | 660 | 0.9 | 950 | 200 | 3.1 | 0.4 | 0.33 | 0.44

    Schreiber | 310 | -34 | -36 | 27 | 21 | 5960 | 20 | 103 | 600 | 0.8 | 850 | 160 | 3.3 | 0.4 | 0.29 | 0.39

    Seaforth | 310 | -17 | -19 | 30 | 23 | 4100 | 25 | 108 | 810 | 0.9 | 1025 | 160 | 2.5 | 0.4 | 0.35 | 0.45

    Shelburne | 495 | -22 | -24 | 29 | 23 | 4700 | 28 | 108 | 740 | 0.9 | 900 | 150 | 3.1 | 0.4 | 0.31 | 0.4

    Simcoe | 210 | -17 | -19 | 30 | 24 | 3700 | 28 | 113 | 860 | 1.0 | 950 | 160 | 1.3 | 0.4 | 0.35 | 0.45

    Sioux Lookout | 375 | -34 | -36 | 28 | 22 | 5950 | 25 | 97 | 520 | 0.7 | 710 | 100 | 2.6 | 0.3 | 0.22 | 0.3

    Smiths Falls | 130 | -25 | -27 | 30 | 23 | 4540 | 25 | 92 | 730 | 0.8 | 850 | 140 | 2.3 | 0.4 | 0.32 | 0.41

    Smithville | 185 | -16 | -18 | 30 | 23 | 3650 | 23 | 108 | 800 | 0.9 | 900 | 160 | 1.5 | 0.4 | 0.33 | 0.42

    Smooth Rock Falls | 235 | -34 | -36 | 29 | 21 | 6250 | 20 | 92 | 560 | 0.8 | 850 | 80 | 2.7 | 0.3 | 0.25 | 0.32

    Southampton | 180 | -17 | -19 | 28 | 22 | 4100 | 25 | 92 | 800 | 1.0 | 830 | 180 | 2.7 | 0.4 | 0.37 | 0.48

    South River | 355 | -27 | -29 | 29 | 22 | 5090 | 25 | 103 | 830 | 1.0 | 975 | 120 | 2.8 | 0.4 | 0.27 | 0.35

    St. Catharines | 105 | -16 | -18 | 30 | 23 | 3540 | 23 | 92 | 770 | 0.9 | 850 | 160 | 1.0 | 0.4 | 0.36 | 0.46

    St. Mary's | 310 | -18 | -20 | 30 | 23 | 4000 | 28 | 108 | 820 | 1.0 | 1025 | 160 | 2.2 | 0.4 | 0.37 | 0.47

    St. Thomas | 225 | -16 | -18 | 31 | 24 | 3780 | 25 | 103 | 900 | 1.0 | 975 | 180 | 1.4 | 0.4 | 0.37 | 0.47

    Stirling | 120 | -23 | -25 | 30 | 23 | 4220 | 25 | 97 | 740 | 0.9 | 850 | 120 | 1.7 | 0.4 | 0.31 | 0.4

    Stratford | 360 | -18 | -20 | 29 | 23 | 4050 | 28 | 113 | 820 | 1.0 | 1050 | 160 | 2.3 | 0.4 | 0.35 | 0.45

    Strathroy | 225 | -17 | -19 | 31 | 24 | 3780 | 25 | 103 | 770 | 0.9 | 950 | 180 | 1.9 | 0.4 | 0.37 | 0.47

    Sturgeon Falls | 205 | -28 | -30 | 29 | 21 | 5200 | 25 | 95 | 700 | 0.9 | 910 | 140 | 2.4 | 0.4 | 0.27 | 0.35

    Sudbury | 275 | -28 | -30 | 29 | 21 | 5180 | 25 | 97 | 650 | 0.8 | 875 | 200 | 2.5 | 0.4 | 0.36 | 0.46

    Sundridge | 340 | -27 | -29 | 29 | 22 | 5080 | 25 | 97 | 840 | 1.0 | 975 | 120 | 2.8 | 0.4 | 0.27 | 0.35

    Tavistock | 340 | -19 | -21 | 29 | 23 | 4100 | 28 | 113 | 820 | 1.0 | 1010 | 160 | 2.1 | 0.4 | 0.35 | 0.45

    Temagami | 300 | -30 | -33 | 30 | 22 | 5420 | 23 | 92 | 650 | 0.8 | 875 | 120 | 2.6 | 0.4 | 0.29 | 0.37

    Thamesford | 280 | -19 | -21 | 30 | 23 | 3950 | 28 | 108 | 820 | 0.9 | 975 | 160 | 1.9 | 0.4 | 0.37 | 0.48

    Thedford | 205 | -16 | -18 | 31 | 23 | 3710 | 25 | 103 | 810 | 1.0 | 900 | 180 | 2.1 | 0.4 | 0.37 | 0.48

    Thunder Bay | 210 | -31 | -33 | 29 | 21 | 5650 | 23 | 108 | 560 | 0.8 | 710 | 160 | 2.9 | 0.4 | 0.29 | 0.39

    Tillsonburg | 215 | -17 | -19 | 30 | 24 | 3840 | 25 | 103 | 880 | 1.0 | 980 | 160 | 1.3 | 0.4 | 0.34 | 0.44

    Timmins | 300 | -34 | -36 | 29 | 21 | 5940 | 20 | 108 | 560 | 0.8 | 875 | 100 | 3.1 | 0.3 | 0.27 | 0.35

    Timmins (Porcupine) | 295 | -34 | -36 | 29 | 21 | 6000 | 20 | 103 | 560 | 0.8 | 875 | 100 | 2.9 | 0.3 | 0.29 | 0.37

    Toronto Metropolitan Region — Etobicoke | 160 | -20 | -22 | 31 | 24 | 3800 | 26 | 108 | 720 | 0.8 | 800 | 160 | 1.1 | 0.4 | 0.34 | 0.44

    Toronto Metropolitan Region — North York | 175 | -20 | -22 | 31 | 24 | 3760 | 25 | 108 | 730 | 0.8 | 850 | 150 | 1.2 | 0.4 | 0.34 | 0.44

    Toronto Metropolitan Region — Scarborough | 180 | -20 | -22 | 31 | 24 | 3800 | 25 | 92 | 730 | 0.9 | 825 | 160 | 1.2 | 0.4 | 0.37 | 0.47

    Toronto Metropolitan Region — Toronto (City Hall) | 90 | -18 | -20 | 31 | 23 | 3520 | 25 | 97 | 720 | 0.9 | 820 | 160 | 0.9 | 0.4 | 0.34 | 0.44

    Trenton | 80 | -22 | -24 | 29 | 23 | 4110 | 23 | 97 | 760 | 0.9 | 850 | 160 | 1.6 | 0.4 | 0.37 | 0.47

    Trout Creek | 330 | -27 | -29 | 29 | 22 | 5100 | 25 | 103 | 780 | 0.9 | 975 | 120 | 2.7 | 0.4 | 0.27 | 0.35

    Uxbridge | 275 | -22 | -24 | 30 | 23 | 4240 | 25 | 103 | 700 | 0.8 | 850 | 140 | 2.4 | 0.4 | 0.33 | 0.42

    Vaughan (Woodbridge) | 165 | -20 | -22 | 31 | 24 | 4100 | 26 | 113 | 700 | 0.8 | 800 | 140 | 1.1 | 0.4 | 0.34 | 0.44

    Vittoria | 215 | -15 | -17 | 30 | 24 | 3680 | 25 | 113 | 880 | 1.0 | 950 | 160 | 1.3 | 0.4 | 0.37 | 0.47

    Walkerton | 275 | -18 | -20 | 30 | 22 | 4300 | 28 | 103 | 790 | 0.9 | 1025 | 160 | 2.7 | 0.4 | 0.36 | 0.46

    Wallaceburg | 180 | -16 | -18 | 31 | 24 | 3600 | 28 | 97 | 760 | 0.9 | 825 | 180 | 0.9 | 0.4 | 0.35 | 0.45

    Waterloo | 330 | -19 | -21 | 29 | 23 | 4200 | 28 | 119 | 780 | 0.9 | 925 | 160 | 2.0 | 0.4 | 0.29 | 0.37

    Watford | 240 | -17 | -19 | 31 | 24 | 3740 | 25 | 108 | 790 | 0.9 | 950 | 160 | 1.9 | 0.4 | 0.37 | 0.47

    Wawa | 290 | -34 | -36 | 26 | 21 | 5840 | 20 | 93 | 725 | 0.9 | 950 | 160 | 3.4 | 0.4 | 0.3 | 0.39

    Welland | 180 | -15 | -17 | 30 | 23 | 3670 | 23 | 103 | 840 | 1.0 | 975 | 160 | 2.0 | 0.4 | 0.34 | 0.43

    West Lorne | 215 | -16 | -18 | 31 | 24 | 3700 | 28 | 103 | 840 | 1.0 | 900 | 180 | 1.3 | 0.4 | 0.37 | 0.47

    Whitby | 85 | -20 | -22 | 30 | 23 | 3820 | 23 | 86 | 760 | 0.9 | 850 | 160 | 1.2 | 0.4 | 0.37 | 0.48

    Whitby (Brooklin) | 160 | -20 | -22 | 30 | 23 | 4010 | 23 | 86 | 770 | 0.9 | 850 | 140 | 1.9 | 0.4 | 0.35 | 0.45

    White River | 375 | -39 | -42 | 28 | 21 | 6150 | 20 | 92 | 575 | 0.8 | 825 | 100 | 3.6 | 0.4 | 0.22 | 0.3

    Wiarton | 185 | -19 | -21 | 29 | 22 | 4300 | 25 | 103 | 740 | 0.9 | 1000 | 180 | 2.7 | 0.4 | 0.34 | 0.44

    Windsor | 185 | -16 | -18 | 32 | 24 | 3400 | 28 | 103 | 800 | 0.9 | 900 | 180 | 0.8 | 0.4 | 0.37 | 0.47

    Wingham | 310 | -18 | -20 | 30 | 23 | 4220 | 28 | 108 | 780 | 0.9 | 1050 | 160 | 2.6 | 0.4 | 0.36 | 0.46

    Woodstock | 300 | -19 | -21 | 30 | 23 | 3910 | 28 | 113 | 830 | 0.9 | 930 | 160 | 1.9 | 0.4 | 0.34 | 0.44

    Wyoming | 215 | -16 | -18 | 31 | 24 | 3700 | 25 | 103 | 815 | 0.9 | 900 | 180 | 1.6 | 0.4 | 0.37 | 0.47

    Open OBC SB-1 in the code viewer
  • OBC Div. B 2.4.1.1. Application

    (1)Except as provided in Sentence (2), and except as otherwise provided in this Section, systems and equipment for heating, ventilating and air-conditioning services in farm buildings shall conform to Part 6.

    (2)farm buildings need not comply with Articles 6.3.1.3. and 6.4.1.1. and Sentences 6.3.2.8.(3) and 6.3.2.10.(13).

    Open OBC Div. B 2.4.1.1. in the code viewer