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Small Buildings study guideHouses and Part 9

Code structure, objectives and farm building scope

Division A, Division B Part 1, SA-1 and SB-1, and farm building scope and classification.

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Values this chapter turns on

maximum building area for Part 9
600 m²
maximum building area for Part 9
maximum building height for Part 9
3 storeys
maximum building height for Part 9
maximum occupant load to stay Group G
1 per 40 m²
maximum occupant load to stay Group G
maximum combustible content for F3 occupancy
50 kg/m²
maximum combustible content for F3 occupancy

This chapter is the map of the whole Building Code. On the Small Buildings exam it decides the first and most important question in many scenarios: does Part 9 apply, or does the building fall under Part 3 and the other "large building" Parts? It also covers definitions, the objectives and functional statements, climatic data in SB-1, referenced documents, and how farm buildings are scoped and classified.

Application, compliance and Divisions

The Code applies to construction, demolition, change of use and occupancy of buildings, whether they are built on site or in a factory 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)).

The Code is split into three Divisions:

Division What it holds
A Compliance and application rules, objectives, functional statements
B Acceptable solutions (technical requirements, Parts 1 to 12)
C Administrative provisions (permits, designer qualifications, rulings)

See OBC Div. A 1.3.1.1.OBC Div. A 1.3.1.1. Scope of Division A(1) Division A contains the compliance and application provisions, objectives and functional statements of this Code., 1.3.1.2.OBC Div. A 1.3.1.2. Scope of Division B(1) Division B contains the acceptable solutions of this Code. and 1.3.1.3.OBC Div. A 1.3.1.3. Scope of Division C(1) Division C contains the administrative provisions of this Code.. If a cross-reference does not name a Division, it points to the same Division as the provision you are reading OBC Div. A 1.3.1.4.OBC Div. A 1.3.1.4. Internal Cross-References(1) Where the Division of a referenced provision is not specified in this Code, it shall mean that the referenced provision is in the same Division as the referencing provision..

You comply in one of two ways: follow the acceptable solutions in Division B, or use an alternative solution that reaches at least the same level of performance, judged against the objectives and functional statements attributed to the acceptable solution in Supplementary Standard SA-1 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…. Used materials and equipment can be reused if they meet the requirements for new materials and suit 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..

Part 9 or Part 3?

Part 9 applies to buildings of 3 storeys or less in building height, with a building area not more than 600 m², used for Group C (other than retirement homes), D, E, or F2 and F3 major 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…. Parts 3, 4, 5 and 6 apply to post-disaster buildings, to every Group A, Group B and Group F, Division 1 building regardless of size, and to C, D, E, F2 and F3 buildings that exceed 600 m² or 3 storeys 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….

Test Part 9 limit
Building height 3 storeys or less
Building area 600 m² or less
Occupancies allowed C (not retirement home), D, E, F2, F3
Never Part 9 A, B, F1, post-disaster

Parts 1, 7 and 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 11 applies to buildings that have existed for at least five years OBC Div. A 1.3.3.3B.OBC Div. A 1.3.3.3B. Application of Part 11(1) Except as provided in Sentence (2), Part 11 of Division B applies to the design and construction of existing buildings, or parts of existing buildings, that have been in existence for at least five years. (2) If a building has been in existence for at least five years but includes an addition that has been in….

Building size and firewalls. Where a firewall divides a building, each portion is treated as a separate building, except for gross area under Division C, the fire alarm requirement and an interconnected plumbing system OBC Div. A 1.3.3.4.OBC Div. A 1.3.3.4. Building Size Determination(1) Where a firewall divides a building, each portion of the building that is divided shall be considered as a separate building, except for the purposes of (a) a determination of gross area in Section 1.2. of Division C, (b) a fire alarm and detection system in Sentence 3.2.4.2.(1) of Division B or Article 9.10.18.1…. A residential building may also be split for building height only, by a vertical fire separation of at least 1 h through all storeys, if each portion is residential (not a retirement home), 3 storeys or less, and a firefighter can reach an entrance of each portion within 45 m of the nearest street.

Designated structures. Some structures are "buildings" under the Act even though they are not ordinary buildings, such as a retaining wall over 1,000 mm high next to public property or a building access, a pedestrian bridge, a building-mounted solar collector or dish antenna of 5 m² or more, and an outdoor pool OBC Div. A 1.3.3.5.OBC Div. A 1.3.3.5. Designated Structures(1) The following structures are designated for the purposes of clause (d) of the definition of building in subsection 1 (1) of the Act: (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….

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Definitions

Defined terms appear in italics in the Code and are listed in Division A 1.4.1.2. Words not defined there take their ordinary meaning in the trade context 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…. Definitions that drive Small Buildings answers:

  • Building area: the greatest horizontal area above grade, inside the outside face of exterior walls, or to the centre line of a firewall OBC Div. A 1.4.1.2.OBC Div. A 1.4.1.2.(1) Building areaBuilding area means the greatest horizontal area of a building above grade within the outside surface of exterior walls or within the outside surface of exterior walls and the centre line of firewalls..
  • Building height (in storeys): storeys between the roof and the floor of the first storey OBC Div. A 1.4.1.2.OBC Div. A 1.4.1.2.(1) Building height (in storeys)Building height (in storeys) means the number of storeys contained between the roof and the floor of the first storey..
  • First storey: the storey with its floor closest to grade and its ceiling more than 1.8 m above grade OBC Div. A 1.4.1.2.OBC Div. A 1.4.1.2.(1) First storeyFirst storey means the storey that has its floor closest to grade and its ceiling more than 1.8 m above grade..
  • Grade: the average level of proposed or finished ground next to the building at all exterior walls OBC Div. A 1.4.1.2.OBC Div. A 1.4.1.2.(1) GradeGrade means the average level of proposed or finished ground adjoining a building at all exterior walls..
  • Low-hazard industrial (F3): combustible content not more than 50 kg/m² or 1,200 MJ/m² OBC Div. A 1.4.1.2.OBC Div. A 1.4.1.2.(1) Low-hazard industrial occupancy (Group F, Division 3)Low-hazard industrial occupancy (Group F, Division 3) means an industrial occupancy in which the combustible content is not more than 50 kg/m² or 1,200 MJ/m² of floor area.; above that, and not high hazard, it is F2.

A basement is any storey below the first storey, so it does not count toward building height OBC Div. A 1.4.1.2.OBC Div. A 1.4.1.2.(1) BasementBasement means a storey or storeys of a building located below the first storey..

Objectives and functional statements (SA-1)

Division A Part 2 lists the objectives: OS (safety), OH (health), OA (accessibility), OP (fire, structural, water and sewage protection of buildings), OR (resource conservation), OE (environmental integrity) and OC (conservation of buildings) 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…. Each has sub-objectives, for example OS1 fire safety, OS3 safety in use, OH3 noise protection, OP3 protection of adjacent buildings from fire.

Part 3 lists functional statements, numbered F01 to F151 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…. Examples: F03 retards fire spread beyond its point of origin, F10 supports timely movement to a safe place, F30 limits tripping, slipping and falling injuries, F56 limits airborne sound into a dwelling unit. SA-1 links each Division B sentence to its objectives and functions. You use it when you build or review an alternative solution.

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Climatic data (SB-1) and referenced documents

Climatic and seismic values must 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…. Frost depth is set by local experience OBC Div. B 1.1.3.2.OBC Div. B 1.1.3.2. Depth of Frost Penetration(1) Depth of frost penetration shall be established on the basis of local experience.. The SB-1 notes explain that the 2.5% value is the one normally used for heating design, and the 1% value is for cases where inside temperature control is more critical SB-1 notesOBC 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….

SB-1 Table 2 lists, for each location, elevation, January and July design temperatures, degree-days below 18°C, rainfall values, snow loads (Ss and Sr) and hourly wind pressures 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…. For example, Sudbury shows a January 2.5% temperature of -28°C and 5180 degree-days.

Referenced documents include amendments effective to July 15, 2022, unless the Code says otherwise OBC Div. B 1.3.1.1.OBC Div. B 1.3.1.1. Effective Date(1) Unless otherwise specified in this Code, the documents referenced in this Code shall include all amendments, revisions, reaffirmations, reapprovals, addenda and supplements effective to July 15, 2022., and the editions are in Table 1.3.1.2.

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Farm buildings: scope and classification

Part 2 covers the fire, structural and HVAC performance of farm buildings OBC Div. B 2.1.1.1.OBC Div. B 2.1.1.1. Scope(1) This Part is concerned with the fire, structural, heating, ventilating and air-conditioning performance of farm buildings, as well as processes and operations carried out therein that involve a risk of explosion, high flammability or related conditions that create a hazard to life safety. (See Note A-2.1.1.1.(1)). It applies to Group G, Divisions 1 to 3 farm buildings over 600 m² or over 3 storeys, and to all Group G, Division 4 buildings OBC Div. B 2.1.2.1.OBC Div. B 2.1.2.1. Application(1) Except as provided in Sentences (2) and (3), this Part applies to all farm buildings (a) that are (i) more than 600 m² in building area or more than 3 storeys in building height used for major occupancies classified as Group G, Division 1, 2 or 3 agricultural occupancies, or (ii) used for major occupancies…. Smaller G1 to G3 farm buildings follow the National Farm Building Code of Canada with Ontario changes, use SB-1 climatic values, and may use SB-11 for structure if they are low human occupancy OBC Div. B 2.1.2.3.OBC Div. B 2.1.2.3. Small Farm Buildings(1) Except as provided in Sentences (2) to (6), farm buildings not more than 3 storeys in building height and not more than 600 m² in building area used for major occupancies classified as Group G, Division 1, 2, or 3 agricultural occupancies shall conform to the requirements in the CCBFC NRCC 38732 National Farm….

Occupant load decides whether a farm use stays in Group G. At not more than one person per 40 m², it is Group G; above that, classify it under the ordinary Groups in Table 3.1.2.1. OBC Div. B 2.1.2.2.OBC Div. B 2.1.2.2. Classification of Buildings Containing agricultural occupancies(1) Buildings or parts of buildings containing an agricultural occupancy that has an occupant load of not more than one person per 40 m² shall be classified according to their major occupancy as belonging to Group G, Division 1, 2, 3 or 4. (2) Buildings or parts of buildings containing an agricultural occupancy that….

Group G Division Use
1 High-hazard agricultural
2 Agricultural not elsewhere classified
3 Greenhouse
4 No human occupants

See OBC Div. B 2.1.4.1.OBC Div. B 2.1.4.1. Classification(1) Every farm building or part of a farm building shall be classified according to its major occupancy as belonging to one of the Divisions of Group G described in Table 2.1.4.1. (See Note A-2.1.4.1.(1)) (See also Note A-2.2.8.3.).

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Common traps

  • Group A, B and F1 buildings are never Part 9, even if tiny.
  • A retirement home is Group C but is excluded from Part 9.
  • Building area is measured at the largest floor above grade, not the footprint of the basement.
  • The winter design temperature is the January 2.5% value, not 1%.
  • A farm use with more than one person per 40 m² is not Group G.

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

  • Group A, B and F1 buildings are never Part 9, even if tiny.
  • A retirement home is Group C but is excluded from Part 9.
  • Building area is measured at the largest floor above grade, not the footprint of the basement.
  • The winter design temperature is the January 2.5% value, not 1%.
  • A farm use with more than one person per 40 m² is not Group G.

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

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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 1.3.1.1. Scope of Division A

    (1)Division A contains the compliance and application provisions, objectives and functional statements of this Code.

    Open OBC Div. A 1.3.1.1. in the code viewer
  • OBC Div. A 1.3.1.2. Scope of Division B

    (1)Division B contains the acceptable solutions of this Code.

    Open OBC Div. A 1.3.1.2. in the code viewer
  • OBC Div. A 1.3.1.3. Scope of Division C

    (1)Division C contains the administrative provisions of this Code.

    Open OBC Div. A 1.3.1.3. in the code viewer
  • OBC Div. A 1.3.1.4. Internal Cross-References

    (1)Where the Division of a referenced provision is not specified in this Code, it shall mean that the referenced provision is in the same Division as the referencing provision.

    Open OBC Div. A 1.3.1.4. 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 1.2.2.3. 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 1.3.3.3. 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
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  • 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 1.3.3.1. 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 1.3.3.3B. Application of Part 11

    (1)Except as provided in Sentence (2), Part 11 of Division B applies to the design and construction of existing buildings, or parts of existing buildings, that have been in existence for at least five years.

    (2)If a building has been in existence for at least five years but includes an addition that has been in existence for less than five years, Part 11 of Division B applies to the entire building.

    Open OBC Div. A 1.3.3.3B. in the code viewer
  • OBC Div. A 1.3.3.4. Building Size Determination

    (1)Where a firewall divides a building, each portion of the building that is divided shall be considered as a separate building, except for the purposes of

    (a)a determination of gross area in Section 1.2. of Division C,

    (b)a fire alarm and detection system in Sentence 3.2.4.2.(1) of Division B or Article 9.10.18.1. of Division B, and

    (c)a plumbing system interconnected through a firewall.

    (2)Except as permitted in Sentence (3), where portions of a building are completely separated by a vertical fire separation that has a fire-resistance rating of not less than 1 h and extends through all storeys and service spaces of the separated portions, each separated portion is permitted to be considered as a separate building for the purpose of determining building height, provided

    (a)each separated portion is not more than 3 storeys in building height and is used only for residential occupancies other than a retirement home, and

    (b)the unobstructed path of travel for a firefighter from the nearest street to one entrance of each separated portion is not more than 45 m.

    (See Note A-1.3.3.4.(2))

    (3)The vertical fire separation referred to in Sentence (2) may terminate at the floor assembly immediately above a basement provided the basement conforms to Article 3.2.1.2. of Division B.

    Open OBC Div. A 1.3.3.4. in the code viewer
  • OBC Div. A 1.3.3.5. Designated Structures

    (1)The following structures are designated for the purposes of clause (d) of the definition of building in subsection 1 (1) of the Act:

    (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 solar collector that is mounted on a building and has a face area equal to or greater than 5 m²,

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

    (h)a dish antenna that is mounted on a building and has a face area equal to or greater than 5 m²,

    (i)an outdoor pool,

    (j)an outdoor public spa,

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

    (l)a demountable stage, and

    (m)a demountable support structure.

    Open OBC Div. A 1.3.3.5. 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 1.4.1.2.(1) Building area

    Building area means the greatest horizontal area of a building above grade within the outside surface of exterior walls or within the outside surface of exterior walls and the centre line of firewalls.

    Open OBC Div. A 1.4.1.2.(1) in the code viewer
  • OBC Div. A 1.4.1.2.(1) Building height (in storeys)

    Building height (in storeys) means the number of storeys contained between the roof and the floor of the first storey.

    Open OBC Div. A 1.4.1.2.(1) in the code viewer
  • OBC Div. A 1.4.1.2.(1) First storey

    First storey means the storey that has its floor closest to grade and its ceiling more than 1.8 m above grade.

    Open OBC Div. A 1.4.1.2.(1) in the code viewer
  • OBC Div. A 1.4.1.2.(1) Grade

    Grade means the average level of proposed or finished ground adjoining a building at all exterior walls.

    Open OBC Div. A 1.4.1.2.(1) in the code viewer
  • OBC Div. A 1.4.1.2.(1) Low-hazard industrial occupancy (Group F, Division 3)

    Low-hazard industrial occupancy (Group F, Division 3) means an industrial occupancy in which the combustible content is not more than 50 kg/m² or 1,200 MJ/m² of floor area.

    Open OBC Div. A 1.4.1.2.(1) in the code viewer
  • OBC Div. A 1.4.1.2.(1) Basement

    Basement means a storey or storeys of a building located below the first storey.

    Open OBC Div. A 1.4.1.2.(1) 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.

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

    Open OBC Div. A 3.2.1.1. in the code viewer
  • 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 1.1.3.2. Depth of Frost Penetration

    (1)Depth of frost penetration shall be established on the basis of local experience.

    Open OBC Div. B 1.1.3.2. 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 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

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  • OBC Div. B 1.3.1.1. Effective Date

    (1)Unless otherwise specified in this Code, the documents referenced in this Code shall include all amendments, revisions, reaffirmations, reapprovals, addenda and supplements effective to July 15, 2022.

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  • OBC Div. B 2.1.1.1. Scope

    (1)This Part is concerned with the fire, structural, heating, ventilating and air-conditioning performance of farm buildings, as well as processes and operations carried out therein that involve a risk of explosion, high flammability or related conditions that create a hazard to life safety. (See Note A-2.1.1.1.(1))

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  • OBC Div. B 2.1.2.1. Application

    (1)Except as provided in Sentences (2) and (3), this Part applies to all farm buildings

    (a)that are

    (i)more than 600 m² in building area or more than 3 storeys in building height used for major occupancies classified as Group G, Division 1, 2 or 3 agricultural occupancies, or

    (ii)used for major occupancies classified as Group G, Division 4, with no human occupantsagricultural occupancies, and

    (b)described in Sentence 2.1.2.2.(1).

    (2)Subsections 2.2.6. and 2.2.7. do not apply to Group G, Division 4 major occupancies.

    (3)farm buildings not described in Sentence (1) shall conform to the requirements of Article 2.1.2.3.

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  • OBC Div. B 2.1.2.3. Small Farm Buildings

    (1)Except as provided in Sentences (2) to (6), farm buildings not more than 3 storeys in building height and not more than 600 m² in building area used for major occupancies classified as Group G, Division 1, 2, or 3 agricultural occupancies shall conform to the requirements in the CCBFC NRCC 38732 National Farm Building Code of Canada.

    (2)Articles 1.1.1.2. and 3.1.8.1. and Subsections 3.1.4. and 4.1.4. in the CCBFC NRCC 38732 National Farm Building Code of Canada do not apply to farm buildings.

    (3)Except as provided in Sentence (4), in the CCBFC NRCC 38732 National Farm Building Code of Canada, references in Articles 1.1.1.3., 2.2.2.1., 2.2.2.2., 2.3.1.1., 2.3.2.1., 3.1.1.1., 3.1.1.2., 3.1.2.1. and 3.1.6.1. to the CCBFC NRCC 38726 National Building Code of Canada, are deemed to be references to Ontario Regulation 403/97 (Building Code), as it read on December 30, 2006.

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

    (5)A farm building of low human occupancy having a building area not exceeding 600 m² and not more than three storeys in building height is deemed to comply with the structural requirements of CCBFC NRCC 38732 National Building Code of Canada, if it is designed and constructed in conformance with MMAH Supplementary Standard SB-11, Construction of Farm Buildings.

    (6)Where a floor area or portion of a floor area within a farm building is intended to contain a hazardous extraction operation involving cannabis, the floor area or portion of the floor area shall conform to the requirements of Article 2.2.8.9.

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  • OBC Div. B 2.1.2.2. Classification of Buildings Containing agricultural occupancies

    (1)Buildings or parts of buildings containing an agricultural occupancy that has an occupant load of not more than one person per 40 m² shall be classified according to their major occupancy as belonging to Group G, Division 1, 2, 3 or 4.

    (2)Buildings or parts of buildings containing an agricultural occupancy that has an occupant load of more than one person per 40 m² shall be classified according to their major occupancy as belonging to one of the Groups and Divisions listed in Table 3.1.2.1. of Division B.

    (3)For the purposes of Sentences (1) and (2), the occupant load shall be determined based on the floor area or the part of the floor area that contains the agricultural occupancy.

    (4)A building intended for use by more than one major occupancy shall be classified according to all the major occupancies for which it is used or intended to be used.

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  • OBC Div. B 2.1.4.1. Classification

    (1)Every farm building or part of a farm building shall be classified according to its major occupancy as belonging to one of the Divisions of Group G described in Table 2.1.4.1. (See Note A-2.1.4.1.(1)) (See also Note A-2.2.8.3.)

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