Last updated
Values this chapter turns on
- floor area per person, the Group G occupant load limit
- 40 m²
- floor area per person, the Group G occupant load limit
- farm building area above which Part 2 applies
- 600 m²
- farm building area above which Part 2 applies
- maximum annual average radon in designated areas
- 200 Bq/m³
- maximum annual average radon in designated areas
- roof slope at which Section 9.10 treats it as a wall
- 60°
- roof slope at which Section 9.10 treats it as a wall
The General Legal/Process exam is mostly about the Act and Division C, but the Ministry syllabus also picks out a short list of items from Divisions A and B. They are small, specific and easy to find once you know where they live. Expect one or two questions each on referenced documents, farm buildings, radon and flood plains, window standards, the special definitions in Parts 7 and 8, and when Part 9 applies.
Referenced documents and organizations
Division A Section 1.5 sets four rules for documents the code refers to, such as CSA standards:
- A referenced document, and any document it in turn references, applies only so far as it relates to buildings and to the objectives and functional statements of the Division B acceptable solution that cites it OBC Div. A 1.5.1.1.OBC Div. A 1.5.1.1. Application of Referenced Documents(1) The provisions of documents referenced in this Code, and of any documents referenced within those documents, apply only to the extent that they relate to (a) buildings, and (b) the objectives and functional statements attributed to the applicable acceptable solutions in Division B where the documents are….
- If the code and a referenced document conflict, 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 edition to use is the one designated in Subsection 1.3.1. of Division B OBC Div. A 1.5.1.3.OBC Div. A 1.5.1.3. Applicable Editions(1) Where documents are referenced in this Code, they shall be the editions designated in Subsection 1.3.1. of Division B.. That subsection says references include amendments and supplements 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 listed in Table 1.3.1.2. OBC Div. B 1.3.1.2.OBC Div. B 1.3.1.2. Applicable Editions(1) Where documents are referenced in this Code, they shall be in the editions designated in Table 1.3.1.2..
- Abbreviations of organization names (CSA, ULC and so on) are explained in Article 1.3.2.1. of Division B OBC Div. A 1.5.2.1.OBC Div. A 1.5.2.1. Abbreviations of Proper Names(1) The abbreviations of proper names in this Code shall have the meanings assigned to them in Article 1.3.2.1. of Division B..
Farm buildings: scope, application and classification
A farm building is a building or part that contains an agricultural occupancy definitionOBC Div. A 1.4.1.2.(1) Farm buildingFarm building means a building or part thereof that contains an agricultural occupancy. (See Note A-1.4.1.2.(1)). Part 2 of Division B deals with the fire, structural and HVAC performance of farm buildings, plus processes that create explosion or high flammability hazards 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)).
Classification. Farm occupancies are Group G, in four divisions 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.):
| Division | Short description |
|---|---|
| G-1 | High hazard |
| G-2 | Not elsewhere classified in Group G |
| G-3 | Greenhouse |
| G-4 | No human occupants |
The trigger for Group G is occupant load. Where the agricultural occupancy has no more than one person per 40 m2, it is Group G. Where it has more than one person per 40 m2, it is classified using the ordinary groups of Table 3.1.2.1., based on the floor area containing that occupancy 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…. "Low human occupancy" uses the same one person per 40 m2 test definitionOBC Div. A 1.4.1.2.(1) Low human occupancyLow human occupancy means, when applied to a farm building, an occupancy in which the occupant load is not more than one person per 40 m² of floor area during normal use..
Application. Part 2 applies to farm buildings that are G-1, G-2 or G-3 and over 600 m2 in building area or over 3 storeys, and to all G-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 G-1, G-2 and G-3 farm buildings (3 storeys or less and 600 m2 or less) follow the National Farm Building Code of Canada with Ontario changes, use SB-1 climatic data, and may use SB-11 for structure if of 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….
Radon and building in flood plains
Radon. In three named areas, buildings must be designed and built so the annual average radon 222 concentration does not exceed 200 Bq per cubic metre of air, and radon daughters do not exceed 0.02 working levels OBC Div. B 3.1.1.5.OBC Div. B 3.1.1.5. Radon(1) In addition to all other requirements, a building in the following designated areas shall be designed and constructed so that the annual average concentration of radon 222 does not exceed 200 Bq/m² of air and the annual average concentration of the short lived daughters of radon 222 does not exceed 0.02 working…, repeated for Part 9 in OBC Div. B 9.1.1.7.OBC Div. B 9.1.1.7. Radon(1) In addition to all other requirements, a building in the following designated areas shall be designed and constructed so that the annual average concentration of radon 222 does not exceed 200 Bq/m³ of air and the annual average concentration of the short lived daughters of radon 222 does not exceed 0.02 working…. The areas:
- City of Elliot Lake (District of Algoma)
- Township of Faraday (County of Hastings)
- Geographic Township of Hyman (District of Sudbury)
Flood plains. Buildings on flood plains must be designed to good engineering practice to resist the expected vertical and horizontal hydrostatic pressures, and must include floodproofing that keeps exits and means of egress usable during a flood OBC Div. B 3.1.1.6.OBC Div. B 3.1.1.6. Building in Flood Plains(1) Buildings constructed on flood plains shall (a) be designed and constructed in accordance with good engineering practice to withstand anticipated vertical and horizontal hydrostatic pressures acting on the structure, and (b) incorporate floodproofing measures that will preserve the integrity of exits and means of…. Part 9 repeats this in 9.1.1.8.OBC Div. B 9.1.1.8. Building in Flood Plains(1) Buildings constructed on flood plains shall, (a) be designed and constructed in accordance with good engineering practice to withstand anticipated vertical and horizontal hydrostatic pressures acting on the structure, and (b) incorporate floodproofing measures that will preserve the integrity of exits and means of….
Applicable standards for environmental separation
Materials and components in environmental separators or assemblies exposed to the exterior, installed to meet Part 5, must meet the standards in Table 5.9.1.1. Flame-spread limits inside insulation standards only apply as Part 3 requires OBC Div. B 5.9.1.1.OBC Div. B 5.9.1.1. Compliance with Applicable Standards(1) Except as provided in Sentence (2) and elsewhere in this Part, materials and components, and their installation, shall conform to the requirements of the applicable standards in Table 5.9.1.1. where those materials or components are (a) incorporated into environmental separators or assemblies exposed to the….
Windows, doors and skylights must meet the harmonized North American Fenestration Standard (AAMA/WDMA/CSA 101/I.S.2/A440) and the Canadian Supplement CSA A440S1. Performance grades are picked from the Canadian Supplement to suit the conditions and location, and the product must meet those grades when tested to the harmonized standard OBC Div. B 5.9.2.2.OBC Div. B 5.9.2.2. Applicable Standards(1) Windows, doors and skylights shall conform to the requirements in (a) AAMA/WDMA/CSA 101/I.S.2/A440, "North American Fenestration Standard/Specification for windows, doors, and skylights" (Harmonized Standard), and (b) CSA A440S1, "Canadian Supplement to AAMA/WDMA/CSA 101/I.S.2/A440-17, North American Fenestration….
Plumbing and sewage system definitions
Parts 7 and 8 each use the italic defined terms of Division A and the Act, with one local override:
| Part | Term redefined | Key idea |
|---|---|---|
| 7 Plumbing | Storey | Includes a mezzanine floor only if it contains plumbing fixtures 7.1.1A.1.OBC Div. B 7.1.1A.1. Definitions(1) Except as provided in Sentence (2), words that appear in italics are defined in Article 1.4.1.2. of Division A and in the Building Code Act, 1992. (2) In this Part, Storey means the interval between two successive floor levels including mezzanine floors that contain plumbing fixtures or between a floor level and… |
| 8 Sewage | Soil | In-situ natural material at least 100 mm thick, able to support plant growth; excludes gravel dumps and mine spoils 8.1.1.2.OBC Div. B 8.1.1.2. Definitions(1) Except as provided in Sentence (2), words that appear in italics are defined in Article 1.4.1.2. of Division A and in the Building Code Act, 1992. (2) In this Part, Soil means in-situ, naturally occurring, unconsolidated mineral or organic material, at the earth's surface that is at least 100 mm thick and capable… |
Compare the general Division A definition of soil, which applies everywhere except Part 8 definitionOBC Div. A 1.4.1.2.(1) SoilSoil means, except for the purposes of Part 8 of Division B, a portion of the earth’s crust that is fragmentary or such that individual particles of a dried sample may be readily separated by agitation in water, and includes boulders, cobbles, gravel, sand, silt, clay and organic matter..
Part 9 application, sloped roofs and residential suites in industrial buildings
Part 9 applies as set out in Division A 1.3.3. OBC Div. B 9.1.1.1.OBC Div. B 9.1.1.1. Application(1) The application of this Part shall be as described in Subsection 1.3.3. of Division A.. That means buildings of 3 storeys or less in building height, with a building area of 600 m2 or less, used for Group C (other than retirement homes), D, E, or F-2 and F-3 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…. Group A, Group B, F-1 and post-disaster buildings always fall under Part 3 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….
Part 9 then sends some building types back to Part 3 sections:
| Item | Goes to |
|---|---|
| Signs | Section 3.15. 9.1.1.2.OBC Div. B 9.1.1.2. Signs(1) Signs shall conform to the requirements in Section 3.15. |
| Self-service storage | Section 3.10. 9.1.1.3.OBC Div. B 9.1.1.3. Self-Service Storage Buildings(1) Self-service storage buildings shall conform to the requirements in Section 3.10. |
| Tents, air-supported structures | 3.14.1., 3.14.2. 9.1.1.4.OBC Div. B 9.1.1.4. Tents and Air-Supported Structures(1) Tents shall conform to the requirements in Subsection 3.14.1. (2) Air-supported structures shall conform to the requirements in Subsection 3.14.2. |
| Near overhead power lines | 3.1.20. 9.1.1.5.OBC Div. B 9.1.1.5. Proximity to Existing Above Ground Electrical Conductors(1) Where a building is constructed in close proximity to existing above ground electrical conductors, the requirements of Subsection 3.1.20. shall apply. |
| Food premises | 3.7.6. 9.1.1.6.OBC Div. B 9.1.1.6. Food Premises(1) The requirements of Subsection 3.7.6. apply to all food premises. |
| Public pools and spas | 3.11., 3.12. 9.1.1.10.OBC Div. B 9.1.1.10. Public Pools and Public Spas(1) Public pools shall conform to the requirements of Section 3.11. and public spas shall conform to the requirements of Section 3.12. |
| Shelf and rack storage | 3.16. 9.1.1.11.OBC Div. B 9.1.1.11. Shelf and Rack Storage Systems(1) Shelf and rack storage systems shall conform to the requirements of Section 3.16. |
Manufactured buildings are deemed to comply if built to CSA Z240.2.1 (sections not wider than 4.88 m) or CSA A277, but site work and components built off the factory floor still follow the code OBC Div. B 9.1.1.9.OBC Div. B 9.1.1.9. Site Assembled and Factory-Built Buildings(1) Except as provided in Sentence (2) and in Sentence 12.2.1.2.(2), a manufactured building is deemed to comply with this Code if it is designed and constructed in compliance with, (a) CSA Z240.2.1, "Structural requirements for manufactured homes," if the building is constructed in sections not wider than 4.88 m, or….
Sloped roofs. For Section 9.10, a roof sloped 60 degrees or more from horizontal and next to occupied space is treated as a wall OBC Div. B 9.10.1.1.OBC Div. B 9.10.1.1. Sloped Roofs(1) For the purposes of this Section, roofs with slopes of 60° or more to the horizontal and that are adjacent to a room or space intended for occupancy shall be considered as a wall..
Residential suites in F-2 buildings. A building classified as Group F, Division 2 may contain no more than one suite of residential occupancy, except where the F-2 occupancy is directly related to live/work units OBC Div. B 9.10.9.14.OBC Div. B 9.10.9.14. Residential Suites in Industrial Buildings(1) Except as provided in Sentence (2), not more than one suite of residential occupancy shall be contained within a building classified as a Group F, Division 2 major occupancy. (2) Except where a Group F Division 2 major occupancy is directly related to live/work units, not more than one suite of residential….
Common traps
- Code beats referenced standard when they conflict, not the other way round.
- Group G is decided by occupant load per 40 m2, not by building size. Size decides whether Part 2 or the Farm Building Code route applies.
- G-4 farm buildings fall under Part 2 at any size.
- Part 9 never covers retirement homes, Group A, Group B or F-1.
- The Part 8 "soil" definition is narrower than the Division A one.
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.
- Farm buildings: scope, application and classification
A farm building is a building or part that contains an agricultural occupancy.
- Applicable standards for environmental separation
Materials and components in environmental separators or assemblies exposed to the exterior, installed to meet Part 5, must meet the standards in Table 5.9.1.1. Flame-spread limits…
- Plumbing and sewage system definitions
Compare the general Division A definition of soil, which applies everywhere except Part 8.
- Part 9 application, sloped roofs and residential suites in industrial buildings
Part 9 applies as set out in Division A 1.3.3.. That means buildings of 3 storeys or less in building height, with a building area of 600 m2 or less, used for Group C (other than…
Usual exam traps
- Code beats referenced standard when they conflict, not the other way round.
- Group G is decided by occupant load per 40 m2, not by building size. Size decides whether Part 2 or the Farm Building Code route applies.
- G-4 farm buildings fall under Part 2 at any size.
- Part 9 never covers retirement homes, Group A, Group B or F-1.
- The Part 8 "soil" definition is narrower than the Division A one.
Practice this chapter
Questions on Code structure and scope items from Divisions A and B, in the exam format, every answer explained and cited to its article. Sign in to start; a free account gets the free questions.
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 1.5.1.1. Application of Referenced Documents
Open OBC Div. A 1.5.1.1. in the code viewer(1)The provisions of documents referenced in this Code, and of any documents referenced within those documents, apply only to the extent that they relate to
(a)buildings, and
(b)the objectives and functional statements attributed to the applicable acceptable solutions in Division B where the documents are referenced. (See Note A-1.5.1.1.(1))
OBC Div. A 1.5.1.2. Conflicting Requirements
Open OBC Div. A 1.5.1.2. in the code viewer(1)In case of conflict between the provisions of this Code and those of a referenced document, the provisions of this Code shall govern.
OBC Div. A 1.5.1.3. Applicable Editions
Open OBC Div. A 1.5.1.3. in the code viewer(1)Where documents are referenced in this Code, they shall be the editions designated in Subsection 1.3.1. of Division B.
OBC Div. B 1.3.1.1. Effective Date
Open OBC Div. B 1.3.1.1. in the code viewer(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.
OBC Div. B 1.3.1.2. Applicable Editions
Open OBC Div. B 1.3.1.2. in the code viewer(1)Where documents are referenced in this Code, they shall be in the editions designated in Table 1.3.1.2.
OBC Div. A 1.5.2.1. Abbreviations of Proper Names
Open OBC Div. A 1.5.2.1. in the code viewer(1)The abbreviations of proper names in this Code shall have the meanings assigned to them in Article 1.3.2.1. of Division B.
OBC Div. A 1.4.1.2.(1) Farm building
Open OBC Div. A 1.4.1.2.(1) in the code viewerFarm building means a building or part thereof that contains an agricultural occupancy. (See Note A-1.4.1.2.(1))
OBC Div. B 2.1.1.1. Scope
Open OBC Div. B 2.1.1.1. in the code viewer(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 2.1.4.1. Classification
Open OBC Div. B 2.1.4.1. in the code viewer(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.)
OBC Div. B 2.1.2.2. Classification of Buildings Containing agricultural occupancies
Open OBC Div. B 2.1.2.2. in the code viewer(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.
OBC Div. A 1.4.1.2.(1) Low human occupancy
Open OBC Div. A 1.4.1.2.(1) in the code viewerLow human occupancy means, when applied to a farm building, an occupancy in which the occupant load is not more than one person per 40 m² of floor area during normal use.
OBC Div. B 2.1.2.1. Application
Open OBC Div. B 2.1.2.1. in the code viewer(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.
OBC Div. B 2.1.2.3. Small Farm Buildings
Open OBC Div. B 2.1.2.3. in the code viewer(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.
OBC Div. B 3.1.1.5. Radon
Open OBC Div. B 3.1.1.5. in the code viewer(1)In addition to all other requirements, a building in the following designated areas shall be designed and constructed so that the annual average concentration of radon 222 does not exceed 200 Bq/m² of air and the annual average concentration of the short lived daughters of radon 222 does not exceed 0.02 working levels inside the building:
(a)the City of Elliot Lake in the Territorial District of Algoma,
(b)the Township of Faraday in the County of Hastings, and
(c)the geographic Township of Hyman in the Territorial District of Sudbury.
OBC Div. B 9.1.1.7. Radon
Open OBC Div. B 9.1.1.7. in the code viewer(1)In addition to all other requirements, a building in the following designated areas shall be designed and constructed so that the annual average concentration of radon 222 does not exceed 200 Bq/m³ of air and the annual average concentration of the short lived daughters of radon 222 does not exceed 0.02 working levels inside the building for,
(a)the City of Elliot Lake in the Territorial District of Algoma,
(b)the Township of Faraday in the County of Hastings, and
(c)the geographic Township of Hyman in the Territorial District of Sudbury.
OBC Div. B 3.1.1.6. Building in Flood Plains
Open OBC Div. B 3.1.1.6. in the code viewer(1)Buildings constructed on flood plains shall
(a)be designed and constructed in accordance with good engineering practice to withstand anticipated vertical and horizontal hydrostatic pressures acting on the structure, and
(b)incorporate floodproofing measures that will preserve the integrity of exits and means of egress during times of flooding.
OBC Div. B 9.1.1.8. Building in Flood Plains
Open OBC Div. B 9.1.1.8. in the code viewer(1)Buildings constructed on flood plains shall,
(a)be designed and constructed in accordance with good engineering practice to withstand anticipated vertical and horizontal hydrostatic pressures acting on the structure, and
(b)incorporate floodproofing measures that will preserve the integrity of exits and means of egress during times of flooding.
OBC Div. B 5.9.1.1. Compliance with Applicable Standards
Open OBC Div. B 5.9.1.1. in the code viewer(1)Except as provided in Sentence (2) and elsewhere in this Part, materials and components, and their installation, shall conform to the requirements of the applicable standards in Table 5.9.1.1. where those materials or components are
(a)incorporated into environmental separators or assemblies exposed to the exterior, and
(b)installed to fulfill the requirements of this Part. (See Note A-5.9.1.1.(1))
(2)The requirements for flame-spread ratings contained in thermal insulation standards shall be applied only as required in Part 3.
OBC Div. B 5.9.2.2. Applicable Standards
Open OBC Div. B 5.9.2.2. in the code viewer(1)Windows, doors and skylights shall conform to the requirements in
(a)AAMA/WDMA/CSA 101/I.S.2/A440, "North American Fenestration Standard/Specification for windows, doors, and skylights" (Harmonized Standard), and
(b)CSA A440S1, "Canadian Supplement to AAMA/WDMA/CSA 101/I.S.2/A440-17, North American Fenestration Standard/Specification for windows, doors, and skylights."
(2)Performance grades for windows, doors and skylights shall be selected according to the Canadian Supplement referenced in Clause (1)(b) so as to be appropriate for the conditions and geographic location in which the window, door or skylight will be installed.
(3)Windows, doors and skylights shall conform to the performance grades selected in Sentence (2) when tested in accordance with the Harmonized Standard referenced in Clause (1)(a).
OBC Div. B 7.1.1A.1. Definitions
Open OBC Div. B 7.1.1A.1. in the code viewer(1)Except as provided in Sentence (2), words that appear in italics are defined in Article 1.4.1.2. of Division A and in the Building Code Act, 1992.
(2)In this Part,
Storey means the interval between two successive floor levels including mezzanine floors that contain plumbing fixtures or between a floor level and roof.
OBC Div. B 8.1.1.2. Definitions
Open OBC Div. B 8.1.1.2. in the code viewer(1)Except as provided in Sentence (2), words that appear in italics are defined in Article 1.4.1.2. of Division A and in the Building Code Act, 1992.
(2)In this Part,
Soil means in-situ, naturally occurring, unconsolidated mineral or organic material, at the earth's surface that is at least 100 mm thick and capable of supporting plant growth, and includes material compacted or cemented by soil forming processes, but does not include displaced materials such as gravel dumps, mine spoils, or like deposits.
OBC Div. A 1.4.1.2.(1) Soil
Open OBC Div. A 1.4.1.2.(1) in the code viewerSoil means, except for the purposes of Part 8 of Division B, a portion of the earth’s crust that is fragmentary or such that individual particles of a dried sample may be readily separated by agitation in water, and includes boulders, cobbles, gravel, sand, silt, clay and organic matter.
OBC Div. B 9.1.1.1. Application
Open OBC Div. B 9.1.1.1. in the code viewer(1)The application of this Part shall be as described in Subsection 1.3.3. of Division A.
OBC Div. A 1.3.3.3. Application of Part 9
Open OBC Div. A 1.3.3.3. in the code viewer(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.
OBC Div. A 1.3.3.2. Application of Parts 3, 4, 5 and 6
Open OBC Div. A 1.3.3.2. in the code viewer(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.
OBC Div. B 9.1.1.2. Signs
Open OBC Div. B 9.1.1.2. in the code viewer(1)Signs shall conform to the requirements in Section 3.15.
OBC Div. B 9.1.1.3. Self-Service Storage Buildings
Open OBC Div. B 9.1.1.3. in the code viewer(1)Self-service storage buildings shall conform to the requirements in Section 3.10.
OBC Div. B 9.1.1.4. Tents and Air-Supported Structures
Open OBC Div. B 9.1.1.4. in the code viewer(1)Tents shall conform to the requirements in Subsection 3.14.1.
(2)Air-supported structures shall conform to the requirements in Subsection 3.14.2.
OBC Div. B 9.1.1.5. Proximity to Existing Above Ground Electrical Conductors
Open OBC Div. B 9.1.1.5. in the code viewer(1)Where a building is constructed in close proximity to existing above ground electrical conductors, the requirements of Subsection 3.1.20. shall apply.
OBC Div. B 9.1.1.6. Food Premises
Open OBC Div. B 9.1.1.6. in the code viewer(1)The requirements of Subsection 3.7.6. apply to all food premises.
OBC Div. B 9.1.1.10. Public Pools and Public Spas
Open OBC Div. B 9.1.1.10. in the code viewer(1)Public pools shall conform to the requirements of Section 3.11. and public spas shall conform to the requirements of Section 3.12.
OBC Div. B 9.1.1.11. Shelf and Rack Storage Systems
Open OBC Div. B 9.1.1.11. in the code viewer(1)Shelf and rack storage systems shall conform to the requirements of Section 3.16.
OBC Div. B 9.1.1.9. Site Assembled and Factory-Built Buildings
Open OBC Div. B 9.1.1.9. in the code viewer(1)Except as provided in Sentence (2) and in Sentence 12.2.1.2.(2), a manufactured building is deemed to comply with this Code if it is designed and constructed in compliance with,
(a)CSA Z240.2.1, "Structural requirements for manufactured homes," if the building is constructed in sections not wider than 4.88 m, or
(b)CSA A277, "Procedure for certification of prefabricated buildings, modules, and panels."
(2)The requirements of this Code shall apply to,
(a)building components designed and constructed outside the place of manufacture, and
(b)site installation of such buildings.
OBC Div. B 9.10.1.1. Sloped Roofs
Open OBC Div. B 9.10.1.1. in the code viewer(1)For the purposes of this Section, roofs with slopes of 60° or more to the horizontal and that are adjacent to a room or space intended for occupancy shall be considered as a wall.
OBC Div. B 9.10.9.14. Residential Suites in Industrial Buildings
Open OBC Div. B 9.10.9.14. in the code viewer(1)Except as provided in Sentence (2), not more than one suite of residential occupancy shall be contained within a building classified as a Group F, Division 2 major occupancy.
(2)Except where a Group F Division 2 major occupancy is directly related to live/work units, not more than one suite of residential occupancy shall be contained within a building classified as Group F, Division 2 major occupancy.