Appendix A — Division A

Explanatory Material

A-1.1.1.1.(3) Factory-Built Houses

Portions of the CSA-Z240 series of standards on mobile homes resemble a building code. These portions contain requirements in many of the areas where the change begin

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also has requirements and frequently the requirements are different. Other portions of the Z240 standards deal with special requirements for mobile homes related to the fact that these houses are intended to be periodically moved over roads. The change begin

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considers mobile homes certified to the Z240 standard as acceptable housing and they are permitted under Clause 1.1.1.1.(2)(g).

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A-1.1.1.2.(1) Application to Existing Buildings

(See Division B Part 11)

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A-1.2.1.1.(1)(a) change begin

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Compliance via Acceptable Solutions

If a building design (e.g. material, component, assembly or system) can be shown to meet all provisions of the applicable acceptable solutions in Division B (e.g. it complies with the applicable provisions of a referenced standard), it is deemed to have satisfied the objectives and functional statements linked to those provisions and thus to have complied with that part of the change begin

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. In fact, if it can be determined that a design meets all the applicable acceptable solutions in Division B, there is no need to consult the objectives and functional statements in Division A to determine its compliance.

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A-1.2.1.1.(1)(b) change begin

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Compliance via Alternative Solutions

Where a design differs from the acceptable solutions in Division B, then it should be treated as an “alternative solution.” A proponent of an alternative solution must demonstrate that the alternative solution addresses the same issues as the applicable acceptable solutions in Division B and their attributed objectives and functional statements. However, because the objectives and functional statements are entirely qualitative, demonstrating compliance with them in isolation is not possible. Therefore, Clause 1.2.1.1.(1)(b) identifies the principle that Division B establishes the quantitative performance targets that alternative solutions must meet. In many cases, these targets are not defined very precisely by the acceptable solutions—certainly far less precisely than would be the case with a true performance code, which would have quantitative performance targets and prescribed methods of performance measurement for all aspects of building performance. Nevertheless, Clause 1.2.1.1.(1)(b) makes it clear that an effort must be made to demonstrate that an alternative solution will perform as well as a design that would satisfy the applicable acceptable solutions in Division B—not “well enough” but “as well as.”

In this sense, it is Division B that defines the boundaries between acceptable risks and the “unacceptable” risks referred to in the statements of the change begin

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objectives, i.e. the risk remaining once the applicable acceptable solutions in Division B have been implemented represents the residual level of risk deemed to be acceptable by the broad base of Canadians who have taken part in the consensus process used to develop the change begin

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Level of Performance

Where Division B offers a choice between several possible designs, it is likely that these designs may not all provide exactly the same level of performance. Among a number of possible designs satisfying acceptable solutions in Division B, the design providing the lowest level of performance should generally be considered to establish the minimum acceptable level of performance to be used in evaluating alternative solutions for compliance with the change begin

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Sometimes a single design will be used as an alternative solution to several sets of acceptable solutions in Division B. In this case, the level of performance required of the alternative solution should be at least equivalent to the overall level of performance established by all the applicable sets of acceptable solutions taken as a whole.

Each provision in Division B has been analyzed to determine to what it applies and what it is intended to achieve. The resultant application and intent statements clarify what undesirable results each provision seeks to preclude. These statements are not a legal component of the change begin

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, but are advisory in nature, and can help change begin

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users establish performance targets for alternative solutions. They are published as a separate document entitled “Supplement to the NBC 2010: Application and Intent Statements,” which is available on-line at change begin

www.nationalcodes.nrc.gc.ca

Areas of Performance

A subset of the acceptable solutions in Division B may establish criteria for particular types of designs (e.g. certain types of materials, components, assemblies, or systems). Often such subsets of acceptable solutions are all attributed to the same objective: Fire Safety for example. In some cases, the designs that are normally used to satisfy this subset of acceptable solutions might also provide some benefits that could be related to some other objective: Fire Protection of the Building for example. However, if none of the applicable acceptable solutions are linked to Objective OP1, Fire Protection of the Building, it is not necessary that alternative solutions proposed to replace these acceptable solutions provide a similar benefit related to Fire Protection of the Building. In other words, the acceptable solutions in Division B establish acceptable levels of performance for compliance with the change begin

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only in those areas defined by the objectives and functional statements attributed to the acceptable solutions.

Applicable Acceptable Solutions

In demonstrating that an alternative solution will perform as well as a design that would satisfy the applicable acceptable solutions in Division B, its evaluation should not be limited to comparison with the acceptable solutions to which an alternative is proposed. It is possible that acceptable solutions elsewhere in the change begin

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also apply. The proposed alternative solution may be shown to perform as well as the most apparent acceptable solution which it is replacing but may not perform as well as other relevant acceptable solutions. For example, an innovative sheathing material may perform adequately as sheathing in a wall system that is braced by other means but may not perform adequately as sheathing in a wall system where the sheathing must provide the structural bracing. All applicable acceptable solutions should be taken into consideration in demonstrating the compliance of an alternative solution.

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A-1.2.1.2.(1) Responsibility of Owner

Sentence 1.1.1.1.(1) is not intended to imply that a person who becomes the owner of a building must bring the entire building into compliance with the change begin

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. The

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applies only in the cases and to the extent specified by Article 1.1.1.1., and the owner of a building is therefore made responsible for ensuring the building complies with the change begin

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by Sentence 1.2.1.2.(1) only in the cases and to the extent specified by Article 1.1.1.1. If none of the provisions in Sentence 1.1.1.1.(1) apply to the building, the owner is not required to make any changes to the building.

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A-1.3.3.4.(1) Buildings Divided by Firewalls

This concept relates to the provisions directly regulated by this change begin

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and does not apply to electrical service entrance requirements, which are regulated by other documents.

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A-1.3.3.4.(2) Buildings on Sloping Sites

Application of the definition of grade to stepped buildings on sloping sites often results in such buildings being designated as being greater than 3 storeys in building height even though there may be only 2 or 3 storeys at any one location. The diagrams below illustrate this application compared to a similar building on a flat site.

Under this Sentence, Building A can be considered as being 3 storeys in building height instead of 6 storeys in building height. Both Building A and B are comparable with regard to fire safety and egress.

This relaxation applies to the determination of building height only. All other requirements continue to apply as appropriate.

Figure A-1.3.3.4.(2)

Application of the definition of grade

A-1.3.3.6.(2)(k) Portable Classroom Exemption

This exemption is based on the following considerations

the building area is less than 100 m² in building area and each unit is provided with exiting directly to the exterior,
the building is constructed with smoke detection in all major rooms and with adequate portable fire extinguishers,
the building is properly supervised with a practised and drilled fire safety plan and with supervisory staff fully trained in securing the rapid evacuation of the facilities upon initiation of any alarm device, and
the building, its construction type and any required fire ratings are otherwise in full conformance with the requirements of the By-law.

A-1.4.1.2.(1) Defined Terms

Care Occupancy

Support services rendered by or through care facility management refer to services provided by the organization that is responsible for the care for a period exceeding 24 consecutive hours. They do not refer to services provided by residents of dwelling units or suites, or to services arranged directly by residents of dwelling units or suites with outside agencies.

In the context of care occupancies, these services may include a daily assessment of the resident’s functioning, awareness of their whereabouts, the making of appointments for residents and reminding them of those appointments, the ability and readiness to intervene if a crisis arises for a resident, supervision in areas of nutrition or medication, and provision of transient medical services. Services may also include activities of daily living such as bathing, dressing, feeding, and assistance in the use of washroom facilities, etc. No actual treatment is provided by or through care facility management.

Designated Flood Plain

The Burrard Inlet, English Bay, False Creek and Fraser River flood plains are illustrated on Diagram A1 and the wave effect zones are illustrated on Diagram A2. See Figure A-1.4.1.2.(1)-A for Diagram A1 and Figure A-1.4.1.2.(1)-B for Diagram A2.

The Still Creek flood plain is illustrated on Diagram B. See Figure A-1.4.1.2.(1)-C for Diagram B.

Exit

Exits include doors or doorways leading directly into an exit stair or directly to the outside. In the case of an exit leading to a separate building, exits also include vestibules, walkways, bridges or balconies.

Farm Building

Farm buildings as defined in Article 1.4.1.2. include, but are not limited to, produce storage and packing facilities, livestock and poultry housing, milking centres, manure storage facilities, grain bins, silos, feed preparation centres, farm workshops, greenhouses, farm retail centres, and horse riding, exercise and training facilities. Farm buildings may be classed as low or high human occupancy, depending on the occupant load.

Examples of farm buildings likely to be classed as low human occupancy as defined in Article 1.2.1.2. of the National Farm Building Code of Canada are livestock and poultry housing, manure and machinery storage facilities and horse exercise and training facilities where no bleachers or viewing area are provided.

Examples of farm buildings that would be classed as other than low human occupancy include farm retail centres for feeds, horticultural and livestock produce, auction barns and show areas where bleachers or other public facilities are provided. Farm work centres where the number of workers frequently exceeds the limit for low human occupancy will also be in this category.

It is possible to have areas of both high and low human occupancy in the same building provided that the structural safety and fire separation requirements for high human occupancy are met in the part thus designated.

Fire Separation

A fire separation may or may not have a fire-resistance rating.

Flood Construction Level Requirements

The Still Creek flood construction levels are illustrated on Diagram B. See Figure A-1.4.1.2.(1)-C for Diagram B.

Grade

Localized depressions that need not be considered in the determination of the elevation of grade include such features as vehicle and pedestrian entrances and other minor depressions that do not affect accessibility for firefighting or evacuation.

Heritage Building

Heritage buildings are buildings that are legally recognized by the Province or a City as having historic, architectural or cultural value for the Province or their communities. To qualify as a heritage building under the Vancouver Building By-law, a building must be:

protected as heritage property by the Province under the Heritage Conservation Act or the Park Act;
subject to a heritage designation bylaw pursuant to the Municipal Act or Vancouver Charter;
listed in the Provincial heritage register or in an inventory of heritage buildings maintained for this purpose under section 20(1)(h) of the Heritage Conservation Act.

Despite this definition of Heritage Buildings, the Chief Building Official may accept a lesser standard.

Mechanically Vented

The definition of this term is intended to include all types of appliances and venting systems that rely entirely on fans to evacuate the products of combustion. Systems variously referred to as “forced draft,” “power vented” and “induced draft” in standards and industry terminology may be covered by this definition. The key characteristic of such systems is that they are more resistant to depressurization-induced spillage of combustion products into the building in which they are housed because the combustion venting system downstream of the fan is “sealed,” i.e. includes no draft hood or draft control device.

Post-disaster Building

There may be circumstances where the change begin

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would choose to exempt certain types of buildings or parts thereof from being designated as post-disaster buildings in order to permit them to be governed by Part 9 rather than by the rest of the change begin

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. Such is the case in the following examples: an ambulance that is stored at a volunteer's residence or a police station that is housed in a small shopping mall. The circumstances where such exemptions are permitted are intentionally limited by the definition of post-disaster building.

Public Corridor

A covered mall is considered to be a public corridor and, as such, is subject to the same requirements as a public corridor.

Rim Joist

In the field, rim joists may also be referred to as rim boards, headers or header joists.

Secondary Suite

DELETED.

Service Room

Typical examples of service rooms include boiler rooms, furnace rooms, incinerator rooms, garbage handling rooms and rooms to accommodate air-conditioning or heating appliances, pumps, compressors and electrical equipment. Rooms such as elevator machine rooms and common laundry rooms are not considered to be service rooms.

Storage Garage

Entrances at which vehicles stop for a short time beneath an unenclosed canopy to pick up and drop off passengers are not considered as storage garages. As a subsidiary use, storage garages may also contain space for parking or storing other vehicles (bicycles, boats, etc.).

Suite

Tenancy in the context of the term “suite” applies to both rental and ownership tenure. In a condominium arrangement, for example, dwelling units are considered separate suites even though they are individually owned. In order to be of complementary use, a series of rooms that constitute a suite must be in reasonably close proximity to each other and have access to each other either directly by means of a common doorway or indirectly by a corridor, vestibule or other similar arrangement.

The term “suite” does not apply to rooms such as service rooms, common laundry rooms and common recreational rooms that are not leased or under a separate tenure in the context of the change begin

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. Similarly, the term “suite” is not normally applied in the context of buildings such as schools and hospitals, since the entire building is under a single tenure. However, a room that is individually rented is considered a suite. A warehousing unit in a mini-warehouse is a suite. A rented room in a nursing home could be considered as a suite if the room was under a separate tenure. A hospital bedroom on the other hand is not considered to be under a separate tenure, since the patient has little control of that space, even though he pays the hospital a per diem rate for the privilege of using the hospital facilities, which include the sleeping areas.

For certain requirements in the change begin

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, the expression “room or suite” is used (e.g., travel distance). This means that the requirement applies within the rooms of suites as well as to the suite itself and to rooms that may be located outside the suite. In other places the expression “suite, and rooms not located within a suite” is used (e.g., for the installation of smoke and heat detectors). This means that the requirement applies to individual suites as defined, but not to each room within the suite. The rooms “not within a suite” would include common laundry rooms, common recreational rooms and service rooms, which are not considered as tenant-occupied space.

Treatment

The ability to evacuate unassisted implies that a person is capable of recognizing and responding to an emergency given their physical, cognitive and behavioural abilities, and able to move to a safe location without the assistance of another person. For example, such persons must be able to arise and walk, or transfer from a bed or chair to a means of mobility, and leave the building or move to a safe location on their own.

Treatment Occupancy

“Treatments” may include such things as surgery, intensive care, and emergency medical intervention. Treatment services differ from the services provided by care occupancies like personal care assistance or the administration of medication, and from those provided by business and personal services occupancies like dentistry or day procedures.

Illustrations for Defined Terms

Figure A-1.4.1.2.(1)-A

Diagram A1: Burrard Inlet, English Bay, False Creek and Fraser River Flood Plains

Figure A-1.4.1.2.(1)-B

Diagram A2: Burrard Inlet, English Bay, False Creek and Fraser River Flood Plain Wave Effect Zone

Figure A-1.4.1.2.(1)-C

Diagram B: Still Creek Flood Plain and Flood Construction Levels

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A-1.5.1.1.(1) Application of Referenced Documents

Documents referenced in the change begin

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may contain provisions covering a wide range of issues, including issues that are unrelated to the objectives and functional statements stated in Parts 2 and 3 of Division A respectively; e.g. aesthetic issues such as colour-fastness or uniformity. Sentence 1.5.1.1.(1) is intended to make it clear that, whereas referencing a document in the change begin

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generally has the effect of making the provisions of that document part of the change begin

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, provisions that are unrelated to buildings or to the objectives and functional statements attributed to the provisions in Division B where the document is referenced are excluded.

Furthermore, many documents referenced in the change begin

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contain references to other documents, which may also, in turn, refer to other documents. These secondary and tertiary referenced documents may contain provisions that are unrelated to buildings or to the objectives and functional statements of the change begin

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: such provisions—no matter how far down the chain of references they occur—are not included in the intent of Sentence 1.5.1.1.(1) of Division A.

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A-2.2.1.1.(1) Objectives

Listing of objectives

Any gaps in the numbering sequence of the objectives are due to the fact that there is a master list of objectives covering the two principal change begin

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Documents — the Fire change begin

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, and Book I (General) and Book II (Plumbing Systems) of the By-law— but not all objectives are pertinent to both By-laws.

The building

Where the term “the building” is used in the wording of the objectives, it refers to the building for which compliance with the change begin

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is being assessed.

Emergency

The term “emergency”—in the context of safety in buildings—is often equated to the term “fire emergency;” however, the wording of objectives OS3.7 and OS5.9 makes it clear that the change begin

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addresses any type of emergency that would require the rapid evacuation of the building, such as a bomb threat or the presence of intruders.

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A-3.2.1.1.(1) Functional Statements

Listing of functional statements

The numbered functional statements are grouped according to functions that deal with closely related subjects. For example, the first group deals with fire risks, the second group deals with emergency egress and response, etc. There may be gaps in the numbering sequence for the following reasons:

Each group has unused numbers which allows for the possible future creation of additional functional statements within any one group.
There is a master list of functional statements covering the two By-laws Documents — the Fire By-law, and Book I (General) and Book II (Plumbing Systems) of the Building By-law.

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Figure A-1

Diagram A1: Burrard Inlet, English Bay, False Creek and Fraser River Flood Plains

Figure A-2

Diagram A2: Burrard Inlet, English Bay, False Creek and Fraser River Flood Plain Wave Effect Zone

Figure A-3

Diagram B: Still Creek Flood Plain and Flood Construction Levels


	This Appendix is included for explanatory purposes only and does not form part of the requirements except as defined in Division A Sentence 1.1.3.1.(1). The numbers that introduce each Appendix Note correspond to the applicable requirements in this Division.

Table Alternate Compliance Methods for Heritage Buildings
No.	Code Requirement in Division B	Alternate Compliance Method
1	Fire Separations Sentence 3.1.3.1.(1) and Table 3.1.3.1. of Division B, Subsection 9.10.9. of Division B 2 h fire separation required between some major occupancies.	Except for F1 occupancies, 1 h fire separation is acceptable, provided the building is sprinklered.
2	Fire Separations Sentence 3.1.3.1.(1) and Table 3.1.3.1. of Division B, Subsection 9.10.9. of Division B 1 h fire separation required between some major occupancies.	1/2 h fire separation is acceptable if the building is sprinklered.
3	Noncombustible Construction Subsection 3.1.5. of Division B and Article 9.10.6.1. of Division B All materials used in noncombustible construction must be noncombustible unless otherwise permitted.	1. Roofs may be of combustible construction provided the building is sprinklered. 2. Up to 10% gross floor area to a maximum of 10% of any one floor area may be of combustible construction provided the building is sprinklered.
4	Fire-resistance Rating Sentence 3.1.7.1.(1), Article 9.10.3.1. of Division B Where a material, assembly of materials or structural member is required to have a fire resistance rating it shall be tested in accordance with CAN/ULC-S101	A fire-resistance rating may also be used based on: (a) HUD No. 8 Guideline on Fire Ratings of Archaic Materials and Assemblies., (b) Fire Endurance of Protected Steel Columns and Beams, DBR Technical Paper No. 194., (c) Fire Endurance of Unit Masonry Walls, DBR Technical Paper No. 207., (d) Fire Endurance of Light-Framed and Miscellaneous Assemblies, DBR Technical Paper No. 222.
5	Rating of Supporting Construction Article 3.1.7.5. of Division B, Article 9.10.8.3. of Division B Supporting assemblies to have fire resistance rating at least equivalent to that of the supported floor.	Heavy timber construction is permitted to have a fire resistance rating less than would be required by the Code provided the building: (a) is sprinklered, and (b) does not exceed 6 storeys in building height.
6	Continuity Of Fire Separations Sentence 3.1.8.3.(1) and Sentence 3.1.8.3.(2), Article 9.10.9.2. of Division B Fire separations are required to be continuous above the ceiling space.	Fire separations are not required to be continuous above a ceiling space where (a) the ceiling space is non-combustible construction, (b) both fire compartments are sprinklered, or (c) the ceiling has a minimum rating of 30 minutes.
7	Wired Glass Sentences 3.1.8.5.(1) and 3.1.8.14.(2), Articles 9.10.13.1. of Division B and 9.10.13.5. of Division B 6 mm wired glass in steel frame required in fire separations.	For fixed transoms or sidelights, 6 mm wired glass fixed to a wood frame of at least 50 mm thickness with steel stops is permitted in a required fire separation.
8	Mezzanines Sentences 3.2.1.1.(3) to Sentence 3.2.1.1.(6), Article 9.10.4.1. of Division B Mezzanines enclosing more than 10% above the horizontal plane are considered as storey in building height.	Enclosed mezzanines may be up to 40% of the storey in which they occur and not be considered a storey in building height if the building is sprinklered.
9	Building Height Articles 3.2.2.20. of Division B to Article 3.2.2.8. of Division B Noncombustible construction required for buildings over 3 storeys in building height.	Buildings may be of combustible construction up to 6 storeys provided: (a) the building is sprinklered, (b) the building contains Group C, D, E, F2 or F3 occupancies, and (c) floor assemblies not required to exceed 1 h fire separation requirements may be of heavy timber construction.
10	Spatial Separation Subsection 3.2.3. of Division B, Subsection 9.10.14. of Division B The area of unprotected opening shall not exceed the limits in Tables 3.2.3.1.A of Division B to Table 3.2.3.1.E of Division B	The area of unprotected opening is not limited provided: (a) the limiting distance is a minimum 1 m, (b) the building has a supervised sprinkler system in conformance with Sentence 3.2.4.10.(3), and (c) the sprinkler system is connected to the fire department in conformance with Sentence 3.2.4.8.(4).
11	Construction of Exposing Building Face Article 3.2.3.7. of Division B, Article 9.10.14.5. of Division B The exposing building face is required to have a fire resistance rating and/or be of noncombustible construction.	Exposing building face is not required to have a fire resistance rating if the building is sprinklered. Also, the exposing building face is not required to be of noncombustible construction if it is protected by an exterior sprinkler system conforming to NFPA 13.
12	Roof Covering Rating Sentence 3.1.15.2.(1) Class A, B or C roof covering in conformance with CAN/ULC-S107 required.	For existing roofs not covered by a Class A, B or C roofing a manually operated deluge system in accordance with NFPA 13 is permitted.
13	Smoke Alarms Sentence 3.2.4.20.(5), Sentence 3.2.4.21.(6), Sentence 9.10.19.4.(1) Smoke alarms are required to be connected to an electric circuit.	Smoke alarms may be battery operated in single family homes only.
14	Interconnected Floor Space Subsection 3.2.8. of Division B, Sentence 9.10.1.3.(6)	1. Open stairs in buildings of maximum 4 storeys in building height need not comply with Subsection 3.2.8., provided (a) the building contains a Group C or D occupancy, (b) the building is sprinklered with fast-response sprinklers, (c) corridors opening into the interconnected floor space are separated from the interconnected floor space by a fire separation with the rating required for the corridor, and (d) smoke detectors are installed in the rooms opening into the interconnected floor space and the smoke detectors are connected to the fire alarm system. 2. Open stairs in buildings of maximum 3 storeys in building height, or first 2 storeys and basement, need not comply with Subsection 3.2.8. of Division B, provided: (a) the building contains a Group C or D occupancy, (b) the building is sprinklered with fast response sprinklers, (c) smoke detectors are installed in the rooms opening into the interconnected floor space and the smoke detectors are connected to the fire alarm system, and (d) at least one means of egress is not through the interconnected floor space.
15	Separation of Suites Article 3.3.1.1. of Division B, Article 9.10.9.13. of Division B, Article 9.10.9.14. of Division B Suites are required to be separated from adjoining suites by 3/4 h or 1 h rated fire separations.	Existing fire separations of 1/2 h, such as wood lath and plaster in good condition, are acceptable in sprinklered buildings not exceeding 6 storeys in building height.
16	Corridor fire separation Article 3.3.1.4. of Division B, Article 9.10.9.15. of Division B Public corridors are required to be separated from the remainder of the building by a fire separation having a fire resistance rating of at least 3/4 h.	Existing corridors with 1/2 h fire resistance ratings, such as wood lath and plaster in good condition, are acceptable in residential occupancies provided the building: (a) does not exceed 6 storeys in building height, and (b) is fully sprinklered with fast response sprinklers.
17	Corridor Width Article 3.3.1.9. of Division B and Subsection 3.4.3. of Division B, Article 9.9.3.3. of Division B Public corridors and exit corridors are permitted to have a minimum width of 1 100 mm.	Public corridors and exit corridors are permitted with a minimum width of 800 mm provided: (a) the occupant load of the building is maximum 20 people, and (b) the building does not exceed 3 storeys in building height.
18	Door Swing Article 3.3.1.10. of Division B and Article 3.4.6.2. of Division B, Article 9.9.6.5. of Division B Doors required to swing in the direction of exit travel.	2nd egress door from a room is not required to swing in the direction of exit travel provided: (a) the building is sprinklered and the system is supervised in conformance with Sentence 3.2.4.10.(3), and (b) the occupant load of the building is maximum 100 people.
19	Stairs, Ramps, Handrails and Guards Article 3.3.1.14. of Division B, Article 3.3.1.16. of Division B, Article 3.3.1.18. of Division B, Articles 3.4.6.4. of Division B to 3.4.6.6. of Division B, Section 9.8. of Division B	Existing conditions that do not comply fully with the requirements are permitted if they are acceptable to the authority having jurisdiction.
20	Transparent Doors and Panels Article 3.3.1.19. of Division B, Article 9.6.1.4. of Division B Glass in doors and sidelights are required to be protected by guards and to be safety glass.	Existing glass or transparent panels that do not comply fully with the requirements are permitted if sufficiently discernible or guards are provided in hazardous situations.
21	Dead-end Corridors Sentence 3.3.1.9.(7), Article 9.9.7.3. of Division B Dead-end corridors are permitted to a maximum length of 6 m.	1. Dead-end corridors are permitted to a maximum length of 10 m in Group C occupancies provided: (a) the building is sprinklered with fast response sprinklers, and (b) smoke detectors are installed in the corridor system. 2. Dead-end corridors are permitted to a maximum of 15 m in length in Group D, E, F2 and F3 occupancies provided: (a) the building is sprinklered with fast response sprinklers, and (b) smoke detectors are installed in the corridor system.
22	Exits Article 3.4.2.1. of Division B, Article 9.9.8.2. of Division B Floor areas shall be served by not fewer than 2 exits except as permitted by Sentence 3.4.2.1.(2).	Floor areas may be served by a single exit within the limits of Sentence 3.4.2.1.(2) provided: (a) the building does not exceed 3 storeys in building height, (b) the building is sprinklered with fast response sprinklers, and (c) all floor areas are protected by a system of smoke detectors connected to a fire alarm system.
23	Reduction of Exit Width Sentence 3.4.3.3.(2), Article 9.9.6.1. of Division B Swinging doors in their swing shall not reduce the effective width of exit stairs and landings to less than 750 mm.	Existing swinging doors in their swing are permitted to reduce the effective width of exit stairs and landings to a minimum of 550 mm provided: (a) they serve Group C or D occupancies, (b) the building does not exceed 4 storeys in building height, and (c) the building is sprinklered.
24	Fire Separation of Exits Article 3.4.4.1. of Division B, Subsection 9.9.4. of Division B Exits are required to be separated from the remainder of the floor area by a fire separation having a fire-resistance rating of not less than 3/4h.	1. Buildings of 3 storeys or less may have exits that are separated by a fire separation that does not have a fire-resistance rating provided: (a) the building is sprinklered with fast response sprinklers, and (b) the sprinkler system is supervised in accordance with Sentence 3.2.4.9.(2). 2. Buildings not exceeding 6 storeys in building height may have exits that are separated by a 3/4 h fire separation provided the building is sprinklered.
25	Exits Through Lobbies Article 3.4.4.2. of Division B, Article 9.9.8.5. of Division B Rooms adjacent to the lobby are required to be separated by a fire separation.	Rooms adjacent to the lobby are not required to be separated by a fire separation provided: (a) the floor area is sprinklered with fast response sprinklers, and (b) smoke detectors are installed in the adjacent rooms.
26	Rooms Opening into Exit Sentence 3.4.4.4.(7), Article 9.9.5.9. of Division B Service rooms and ancillary rooms are not permitted to open directly into an exit.	Service rooms and ancillary rooms may open directly into an exit provided: (a) the room is sprinklered with fast response sprinklers, and (b) weatherstripping is installed on the door to prevent the passage of smoke.
27	Illumination of Exit Signs Sentence 3.4.5.1.(2) to 3.4.5.1.(4), Sentence 9.9.11.3.(2) to 9.9.11.3.(6) Exit signs are required to be illuminated continuously while the building is occupied.	Where exit signage may compromise historic appearances, or authenticity of displays, exit signs may be installed to light only on an emergency condition, such as by the fire alarm system or due to power failure.
28	Clearance from Exit Doors Sentence 3.4.6.11.(1), Article 9.9.6.6. of Division B Stair risers shall not be closer than 300 mm from an exit door.	Except as permitted in Sentences 3.4.6.10.(2) or 9.9.6.6.(2), existing exit doors shall not extend beyond the first riser.
29	Fire Escapes Subsection 3.4.7. of Division B, Sentence 9.9.2.1.(2) Fire escapes are required to conform to Subsection 3.4.7. of Division B	Existing fire escapes that do not completely conform to Subsection 3.4.7. of Division B. are acceptable provided: (a) the fire escapes are acceptable and (b) the building is sprinklered.
30	Fire Escape Construction Article 3.4.7.2. of Division B, Sentence 9.9.2.1.(2)	Existing combustible fire escapes are permitted if the building is permitted to be of combustible construction by Part 3 of Division B, Part 9 of Division B or by these Compliance Tables.
31	Protection of Fire Escapes Article 3.4.7.4. of Division B, Sentence 9.9.2.1.(2) Openings in the exterior wall adjacent to the fire escape are required to be protected by closures.	Existing openings in the exterior wall adjacent to the fire escape are not required to be protected by closures provided: (a) the building is sprinklered, and (b) a sprinkler head is located within 1.5 m of the opening required to be protected by Article 3.4.7.4. of Division B
32	Vertical Service Space Article 3.6.3.1. of Division B Vertical service spaces are required to be separated from the adjacent floor area by a rated fire separation.	Existing vertical service spaces that do not completely conform to the rated fire separation requirements are acceptable provided the vertical service spaces are sprinklered.
33	Height and Area of Rooms Subsection 3.7.1. of Division B, Section 9.5. of Division B The height and area of rooms are required to comply to minimum dimension requirements.	Existing rooms are not required to comply to the minimum dimension requirements of Subsection 3.7.1. of Division B or Section 9.5. of Division B
34	Washroom Requirements Subsection 3.7.2. of Division B, Section 9.31. of Division B Buildings are required to be provided with a minimum number of washroom fixtures.	Existing facilities are not required to completely comply to the requirements of Subsection 3.7.2. of Division B or Section 9.31. of Division B provided it is acceptable to the authority having jurisdiction.
35	Access for Persons with Disabilities Section 3.8. of Division B	Article 3.8.4.5. of Division B shall apply to existing buildings.
36	Seismic Anchorage of Exterior Decoration Subsection 4.1.8. of Division B	Existing exterior decorations are not required to fully comply to the anchorage requirements of Subsection 4.1.8. of Division B provided: (a) adequate means of protection is provided, or (b) there is no exposure to the public.
37	Mechanical Systems Part 6 of Division B and Part 7 of Division B	Existing mechanical systems in buildings are not required to fully comply to the requirements of Parts 6 of Division B or 7 of Division B provided: (a) it is not an unsafe condition and (b) it is acceptable to the authority having jurisdiction.

Table Alternate Compliance Methods for Heritage Buildings
No.	Code Requirement in Division B	Alternate Compliance Method
1	Fire Separations Sentence 3.1.3.1.(1) and Table 3.1.3.1. of Division B, Subsection 9.10.9. of Division B 2 h fire separation required between some major occupancies.	Except for F1 occupancies, 1 h fire separation is acceptable, provided the building is sprinklered.
2	Fire Separations Sentence 3.1.3.1.(1) and Table 3.1.3.1. of Division B, Subsection 9.10.9. of Division B 1 h fire separation required between some major occupancies.	1/2 h fire separation is acceptable if the building is sprinklered.
3	Noncombustible Construction Subsection 3.1.5. of Division B and Article 9.10.6.1. of Division B All materials used in noncombustible construction must be noncombustible unless otherwise permitted.	1. Roofs may be of combustible construction provided the building is sprinklered. 2. Up to 10% gross floor area to a maximum of 10% of any one floor area may be of combustible construction provided the building is sprinklered.
4	Fire-resistance Rating Sentence 3.1.7.1.(1), Article 9.10.3.1. of Division B Where a material, assembly of materials or structural member is required to have a fire resistance rating it shall be tested in accordance with CAN/ULC-S101	A fire-resistance rating may also be used based on: (a) HUD No. 8 Guideline on Fire Ratings of Archaic Materials and Assemblies., (b) Fire Endurance of Protected Steel Columns and Beams, DBR Technical Paper No. 194., (c) Fire Endurance of Unit Masonry Walls, DBR Technical Paper No. 207., (d) Fire Endurance of Light-Framed and Miscellaneous Assemblies, DBR Technical Paper No. 222.
5	Rating of Supporting Construction Article 3.1.7.5. of Division B, Article 9.10.8.3. of Division B Supporting assemblies to have fire resistance rating at least equivalent to that of the supported floor.	Heavy timber construction is permitted to have a fire resistance rating less than would be required by the Code provided the building: (a) is sprinklered, and (b) does not exceed 6 storeys in building height.
6	Continuity Of Fire Separations Sentence 3.1.8.3.(1) and Sentence 3.1.8.3.(2), Article 9.10.9.2. of Division B Fire separations are required to be continuous above the ceiling space.	Fire separations are not required to be continuous above a ceiling space where (a) the ceiling space is non-combustible construction, (b) both fire compartments are sprinklered, or (c) the ceiling has a minimum rating of 30 minutes.
7	Wired Glass Sentences 3.1.8.5.(1) and 3.1.8.14.(2), Articles 9.10.13.1. of Division B and 9.10.13.5. of Division B 6 mm wired glass in steel frame required in fire separations.	For fixed transoms or sidelights, 6 mm wired glass fixed to a wood frame of at least 50 mm thickness with steel stops is permitted in a required fire separation.
8	Mezzanines Sentences 3.2.1.1.(3) to Sentence 3.2.1.1.(6), Article 9.10.4.1. of Division B Mezzanines enclosing more than 10% above the horizontal plane are considered as storey in building height.	Enclosed mezzanines may be up to 40% of the storey in which they occur and not be considered a storey in building height if the building is sprinklered.
9	Building Height Articles 3.2.2.20. of Division B to Article 3.2.2.8. of Division B Noncombustible construction required for buildings over 3 storeys in building height.	Buildings may be of combustible construction up to 6 storeys provided: (a) the building is sprinklered, (b) the building contains Group C, D, E, F2 or F3 occupancies, and (c) floor assemblies not required to exceed 1 h fire separation requirements may be of heavy timber construction.
10	Spatial Separation Subsection 3.2.3. of Division B, Subsection 9.10.14. of Division B The area of unprotected opening shall not exceed the limits in Tables 3.2.3.1.A of Division B to Table 3.2.3.1.E of Division B	The area of unprotected opening is not limited provided: (a) the limiting distance is a minimum 1 m, (b) the building has a supervised sprinkler system in conformance with Sentence 3.2.4.10.(3), and (c) the sprinkler system is connected to the fire department in conformance with Sentence 3.2.4.8.(4).
11	Construction of Exposing Building Face Article 3.2.3.7. of Division B, Article 9.10.14.5. of Division B The exposing building face is required to have a fire resistance rating and/or be of noncombustible construction.	Exposing building face is not required to have a fire resistance rating if the building is sprinklered. Also, the exposing building face is not required to be of noncombustible construction if it is protected by an exterior sprinkler system conforming to NFPA 13.
12	Roof Covering Rating Sentence 3.1.15.2.(1) Class A, B or C roof covering in conformance with CAN/ULC-S107 required.	For existing roofs not covered by a Class A, B or C roofing a manually operated deluge system in accordance with NFPA 13 is permitted.
13	Smoke Alarms Sentence 3.2.4.20.(5), Sentence 3.2.4.21.(6), Sentence 9.10.19.4.(1) Smoke alarms are required to be connected to an electric circuit.	Smoke alarms may be battery operated in single family homes only.
14	Interconnected Floor Space Subsection 3.2.8. of Division B, Sentence 9.10.1.3.(6)	1. Open stairs in buildings of maximum 4 storeys in building height need not comply with Subsection 3.2.8., provided (a) the building contains a Group C or D occupancy, (b) the building is sprinklered with fast-response sprinklers, (c) corridors opening into the interconnected floor space are separated from the interconnected floor space by a fire separation with the rating required for the corridor, and (d) smoke detectors are installed in the rooms opening into the interconnected floor space and the smoke detectors are connected to the fire alarm system. 2. Open stairs in buildings of maximum 3 storeys in building height, or first 2 storeys and basement, need not comply with Subsection 3.2.8. of Division B, provided: (a) the building contains a Group C or D occupancy, (b) the building is sprinklered with fast response sprinklers, (c) smoke detectors are installed in the rooms opening into the interconnected floor space and the smoke detectors are connected to the fire alarm system, and (d) at least one means of egress is not through the interconnected floor space.
15	Separation of Suites Article 3.3.1.1. of Division B, Article 9.10.9.13. of Division B, Article 9.10.9.14. of Division B Suites are required to be separated from adjoining suites by 3/4 h or 1 h rated fire separations.	Existing fire separations of 1/2 h, such as wood lath and plaster in good condition, are acceptable in sprinklered buildings not exceeding 6 storeys in building height.
16	Corridor fire separation Article 3.3.1.4. of Division B, Article 9.10.9.15. of Division B Public corridors are required to be separated from the remainder of the building by a fire separation having a fire resistance rating of at least 3/4 h.	Existing corridors with 1/2 h fire resistance ratings, such as wood lath and plaster in good condition, are acceptable in residential occupancies provided the building: (a) does not exceed 6 storeys in building height, and (b) is fully sprinklered with fast response sprinklers.
17	Corridor Width Article 3.3.1.9. of Division B and Subsection 3.4.3. of Division B, Article 9.9.3.3. of Division B Public corridors and exit corridors are permitted to have a minimum width of 1 100 mm.	Public corridors and exit corridors are permitted with a minimum width of 800 mm provided: (a) the occupant load of the building is maximum 20 people, and (b) the building does not exceed 3 storeys in building height.
18	Door Swing Article 3.3.1.10. of Division B and Article 3.4.6.2. of Division B, Article 9.9.6.5. of Division B Doors required to swing in the direction of exit travel.	2nd egress door from a room is not required to swing in the direction of exit travel provided: (a) the building is sprinklered and the system is supervised in conformance with Sentence 3.2.4.10.(3), and (b) the occupant load of the building is maximum 100 people.
19	Stairs, Ramps, Handrails and Guards Article 3.3.1.14. of Division B, Article 3.3.1.16. of Division B, Article 3.3.1.18. of Division B, Articles 3.4.6.4. of Division B to 3.4.6.6. of Division B, Section 9.8. of Division B	Existing conditions that do not comply fully with the requirements are permitted if they are acceptable to the authority having jurisdiction.
20	Transparent Doors and Panels Article 3.3.1.19. of Division B, Article 9.6.1.4. of Division B Glass in doors and sidelights are required to be protected by guards and to be safety glass.	Existing glass or transparent panels that do not comply fully with the requirements are permitted if sufficiently discernible or guards are provided in hazardous situations.
21	Dead-end Corridors Sentence 3.3.1.9.(7), Article 9.9.7.3. of Division B Dead-end corridors are permitted to a maximum length of 6 m.	1. Dead-end corridors are permitted to a maximum length of 10 m in Group C occupancies provided: (a) the building is sprinklered with fast response sprinklers, and (b) smoke detectors are installed in the corridor system. 2. Dead-end corridors are permitted to a maximum of 15 m in length in Group D, E, F2 and F3 occupancies provided: (a) the building is sprinklered with fast response sprinklers, and (b) smoke detectors are installed in the corridor system.
22	Exits Article 3.4.2.1. of Division B, Article 9.9.8.2. of Division B Floor areas shall be served by not fewer than 2 exits except as permitted by Sentence 3.4.2.1.(2).	Floor areas may be served by a single exit within the limits of Sentence 3.4.2.1.(2) provided: (a) the building does not exceed 3 storeys in building height, (b) the building is sprinklered with fast response sprinklers, and (c) all floor areas are protected by a system of smoke detectors connected to a fire alarm system.
23	Reduction of Exit Width Sentence 3.4.3.3.(2), Article 9.9.6.1. of Division B Swinging doors in their swing shall not reduce the effective width of exit stairs and landings to less than 750 mm.	Existing swinging doors in their swing are permitted to reduce the effective width of exit stairs and landings to a minimum of 550 mm provided: (a) they serve Group C or D occupancies, (b) the building does not exceed 4 storeys in building height, and (c) the building is sprinklered.
24	Fire Separation of Exits Article 3.4.4.1. of Division B, Subsection 9.9.4. of Division B Exits are required to be separated from the remainder of the floor area by a fire separation having a fire-resistance rating of not less than 3/4h.	1. Buildings of 3 storeys or less may have exits that are separated by a fire separation that does not have a fire-resistance rating provided: (a) the building is sprinklered with fast response sprinklers, and (b) the sprinkler system is supervised in accordance with Sentence 3.2.4.9.(2). 2. Buildings not exceeding 6 storeys in building height may have exits that are separated by a 3/4 h fire separation provided the building is sprinklered.
25	Exits Through Lobbies Article 3.4.4.2. of Division B, Article 9.9.8.5. of Division B Rooms adjacent to the lobby are required to be separated by a fire separation.	Rooms adjacent to the lobby are not required to be separated by a fire separation provided: (a) the floor area is sprinklered with fast response sprinklers, and (b) smoke detectors are installed in the adjacent rooms.
26	Rooms Opening into Exit Sentence 3.4.4.4.(7), Article 9.9.5.9. of Division B Service rooms and ancillary rooms are not permitted to open directly into an exit.	Service rooms and ancillary rooms may open directly into an exit provided: (a) the room is sprinklered with fast response sprinklers, and (b) weatherstripping is installed on the door to prevent the passage of smoke.
27	Illumination of Exit Signs Sentence 3.4.5.1.(2) to 3.4.5.1.(4), Sentence 9.9.11.3.(2) to 9.9.11.3.(6) Exit signs are required to be illuminated continuously while the building is occupied.	Where exit signage may compromise historic appearances, or authenticity of displays, exit signs may be installed to light only on an emergency condition, such as by the fire alarm system or due to power failure.
28	Clearance from Exit Doors Sentence 3.4.6.11.(1), Article 9.9.6.6. of Division B Stair risers shall not be closer than 300 mm from an exit door.	Except as permitted in Sentences 3.4.6.10.(2) or 9.9.6.6.(2), existing exit doors shall not extend beyond the first riser.
29	Fire Escapes Subsection 3.4.7. of Division B, Sentence 9.9.2.1.(2) Fire escapes are required to conform to Subsection 3.4.7. of Division B	Existing fire escapes that do not completely conform to Subsection 3.4.7. of Division B. are acceptable provided: (a) the fire escapes are acceptable and (b) the building is sprinklered.
30	Fire Escape Construction Article 3.4.7.2. of Division B, Sentence 9.9.2.1.(2)	Existing combustible fire escapes are permitted if the building is permitted to be of combustible construction by Part 3 of Division B, Part 9 of Division B or by these Compliance Tables.
31	Protection of Fire Escapes Article 3.4.7.4. of Division B, Sentence 9.9.2.1.(2) Openings in the exterior wall adjacent to the fire escape are required to be protected by closures.	Existing openings in the exterior wall adjacent to the fire escape are not required to be protected by closures provided: (a) the building is sprinklered, and (b) a sprinkler head is located within 1.5 m of the opening required to be protected by Article 3.4.7.4. of Division B
32	Vertical Service Space Article 3.6.3.1. of Division B Vertical service spaces are required to be separated from the adjacent floor area by a rated fire separation.	Existing vertical service spaces that do not completely conform to the rated fire separation requirements are acceptable provided the vertical service spaces are sprinklered.
33	Height and Area of Rooms Subsection 3.7.1. of Division B, Section 9.5. of Division B The height and area of rooms are required to comply to minimum dimension requirements.	Existing rooms are not required to comply to the minimum dimension requirements of Subsection 3.7.1. of Division B or Section 9.5. of Division B
34	Washroom Requirements Subsection 3.7.2. of Division B, Section 9.31. of Division B Buildings are required to be provided with a minimum number of washroom fixtures.	Existing facilities are not required to completely comply to the requirements of Subsection 3.7.2. of Division B or Section 9.31. of Division B provided it is acceptable to the authority having jurisdiction.
35	Access for Persons with Disabilities Section 3.8. of Division B	Article 3.8.4.5. of Division B shall apply to existing buildings.
36	Seismic Anchorage of Exterior Decoration Subsection 4.1.8. of Division B	Existing exterior decorations are not required to fully comply to the anchorage requirements of Subsection 4.1.8. of Division B provided: (a) adequate means of protection is provided, or (b) there is no exposure to the public.
37	Mechanical Systems Part 6 of Division B and Part 7 of Division B	Existing mechanical systems in buildings are not required to fully comply to the requirements of Parts 6 of Division B or 7 of Division B provided: (a) it is not an unsafe condition and (b) it is acceptable to the authority having jurisdiction.

Table Alternate Compliance Methods for Heritage Buildings
No.	Code Requirement in Division B	Alternate Compliance Method
1	Fire Separations Sentence 3.1.3.1.(1) and Table 3.1.3.1. of Division B, Subsection 9.10.9. of Division B 2 h fire separation required between some major occupancies.	Except for F1 occupancies, 1 h fire separation is acceptable, provided the building is sprinklered.
2	Fire Separations Sentence 3.1.3.1.(1) and Table 3.1.3.1. of Division B, Subsection 9.10.9. of Division B 1 h fire separation required between some major occupancies.	1/2 h fire separation is acceptable if the building is sprinklered.
3	Noncombustible Construction Subsection 3.1.5. of Division B and Article 9.10.6.1. of Division B All materials used in noncombustible construction must be noncombustible unless otherwise permitted.	1. Roofs may be of combustible construction provided the building is sprinklered. 2. Up to 10% gross floor area to a maximum of 10% of any one floor area may be of combustible construction provided the building is sprinklered.
4	Fire-resistance Rating Sentence 3.1.7.1.(1), Article 9.10.3.1. of Division B Where a material, assembly of materials or structural member is required to have a fire resistance rating it shall be tested in accordance with CAN/ULC-S101	A fire-resistance rating may also be used based on: (a) HUD No. 8 Guideline on Fire Ratings of Archaic Materials and Assemblies., (b) Fire Endurance of Protected Steel Columns and Beams, DBR Technical Paper No. 194., (c) Fire Endurance of Unit Masonry Walls, DBR Technical Paper No. 207., (d) Fire Endurance of Light-Framed and Miscellaneous Assemblies, DBR Technical Paper No. 222.
5	Rating of Supporting Construction Article 3.1.7.5. of Division B, Article 9.10.8.3. of Division B Supporting assemblies to have fire resistance rating at least equivalent to that of the supported floor.	Heavy timber construction is permitted to have a fire resistance rating less than would be required by the Code provided the building: (a) is sprinklered, and (b) does not exceed 6 storeys in building height.
6	Continuity Of Fire Separations Sentence 3.1.8.3.(1) and Sentence 3.1.8.3.(2), Article 9.10.9.2. of Division B Fire separations are required to be continuous above the ceiling space.	Fire separations are not required to be continuous above a ceiling space where (a) the ceiling space is non-combustible construction, (b) both fire compartments are sprinklered, or (c) the ceiling has a minimum rating of 30 minutes.
7	Wired Glass Sentences 3.1.8.5.(1) and 3.1.8.14.(2), Articles 9.10.13.1. of Division B and 9.10.13.5. of Division B 6 mm wired glass in steel frame required in fire separations.	For fixed transoms or sidelights, 6 mm wired glass fixed to a wood frame of at least 50 mm thickness with steel stops is permitted in a required fire separation.
8	Mezzanines Sentences 3.2.1.1.(3) to Sentence 3.2.1.1.(6), Article 9.10.4.1. of Division B Mezzanines enclosing more than 10% above the horizontal plane are considered as storey in building height.	Enclosed mezzanines may be up to 40% of the storey in which they occur and not be considered a storey in building height if the building is sprinklered.
9	Building Height Articles 3.2.2.20. of Division B to Article 3.2.2.8. of Division B Noncombustible construction required for buildings over 3 storeys in building height.	Buildings may be of combustible construction up to 6 storeys provided: (a) the building is sprinklered, (b) the building contains Group C, D, E, F2 or F3 occupancies, and (c) floor assemblies not required to exceed 1 h fire separation requirements may be of heavy timber construction.
10	Spatial Separation Subsection 3.2.3. of Division B, Subsection 9.10.14. of Division B The area of unprotected opening shall not exceed the limits in Tables 3.2.3.1.A of Division B to Table 3.2.3.1.E of Division B	The area of unprotected opening is not limited provided: (a) the limiting distance is a minimum 1 m, (b) the building has a supervised sprinkler system in conformance with Sentence 3.2.4.10.(3), and (c) the sprinkler system is connected to the fire department in conformance with Sentence 3.2.4.8.(4).
11	Construction of Exposing Building Face Article 3.2.3.7. of Division B, Article 9.10.14.5. of Division B The exposing building face is required to have a fire resistance rating and/or be of noncombustible construction.	Exposing building face is not required to have a fire resistance rating if the building is sprinklered. Also, the exposing building face is not required to be of noncombustible construction if it is protected by an exterior sprinkler system conforming to NFPA 13.
12	Roof Covering Rating Sentence 3.1.15.2.(1) Class A, B or C roof covering in conformance with CAN/ULC-S107 required.	For existing roofs not covered by a Class A, B or C roofing a manually operated deluge system in accordance with NFPA 13 is permitted.
13	Smoke Alarms Sentence 3.2.4.20.(5), Sentence 3.2.4.21.(6), Sentence 9.10.19.4.(1) Smoke alarms are required to be connected to an electric circuit.	Smoke alarms may be battery operated in single family homes only.
14	Interconnected Floor Space Subsection 3.2.8. of Division B, Sentence 9.10.1.3.(6)	1. Open stairs in buildings of maximum 4 storeys in building height need not comply with Subsection 3.2.8., provided (a) the building contains a Group C or D occupancy, (b) the building is sprinklered with fast-response sprinklers, (c) corridors opening into the interconnected floor space are separated from the interconnected floor space by a fire separation with the rating required for the corridor, and (d) smoke detectors are installed in the rooms opening into the interconnected floor space and the smoke detectors are connected to the fire alarm system. 2. Open stairs in buildings of maximum 3 storeys in building height, or first 2 storeys and basement, need not comply with Subsection 3.2.8. of Division B, provided: (a) the building contains a Group C or D occupancy, (b) the building is sprinklered with fast response sprinklers, (c) smoke detectors are installed in the rooms opening into the interconnected floor space and the smoke detectors are connected to the fire alarm system, and (d) at least one means of egress is not through the interconnected floor space.
15	Separation of Suites Article 3.3.1.1. of Division B, Article 9.10.9.13. of Division B, Article 9.10.9.14. of Division B Suites are required to be separated from adjoining suites by 3/4 h or 1 h rated fire separations.	Existing fire separations of 1/2 h, such as wood lath and plaster in good condition, are acceptable in sprinklered buildings not exceeding 6 storeys in building height.
16	Corridor fire separation Article 3.3.1.4. of Division B, Article 9.10.9.15. of Division B Public corridors are required to be separated from the remainder of the building by a fire separation having a fire resistance rating of at least 3/4 h.	Existing corridors with 1/2 h fire resistance ratings, such as wood lath and plaster in good condition, are acceptable in residential occupancies provided the building: (a) does not exceed 6 storeys in building height, and (b) is fully sprinklered with fast response sprinklers.
17	Corridor Width Article 3.3.1.9. of Division B and Subsection 3.4.3. of Division B, Article 9.9.3.3. of Division B Public corridors and exit corridors are permitted to have a minimum width of 1 100 mm.	Public corridors and exit corridors are permitted with a minimum width of 800 mm provided: (a) the occupant load of the building is maximum 20 people, and (b) the building does not exceed 3 storeys in building height.
18	Door Swing Article 3.3.1.10. of Division B and Article 3.4.6.2. of Division B, Article 9.9.6.5. of Division B Doors required to swing in the direction of exit travel.	2nd egress door from a room is not required to swing in the direction of exit travel provided: (a) the building is sprinklered and the system is supervised in conformance with Sentence 3.2.4.10.(3), and (b) the occupant load of the building is maximum 100 people.
19	Stairs, Ramps, Handrails and Guards Article 3.3.1.14. of Division B, Article 3.3.1.16. of Division B, Article 3.3.1.18. of Division B, Articles 3.4.6.4. of Division B to 3.4.6.6. of Division B, Section 9.8. of Division B	Existing conditions that do not comply fully with the requirements are permitted if they are acceptable to the authority having jurisdiction.
20	Transparent Doors and Panels Article 3.3.1.19. of Division B, Article 9.6.1.4. of Division B Glass in doors and sidelights are required to be protected by guards and to be safety glass.	Existing glass or transparent panels that do not comply fully with the requirements are permitted if sufficiently discernible or guards are provided in hazardous situations.
21	Dead-end Corridors Sentence 3.3.1.9.(7), Article 9.9.7.3. of Division B Dead-end corridors are permitted to a maximum length of 6 m.	1. Dead-end corridors are permitted to a maximum length of 10 m in Group C occupancies provided: (a) the building is sprinklered with fast response sprinklers, and (b) smoke detectors are installed in the corridor system. 2. Dead-end corridors are permitted to a maximum of 15 m in length in Group D, E, F2 and F3 occupancies provided: (a) the building is sprinklered with fast response sprinklers, and (b) smoke detectors are installed in the corridor system.
22	Exits Article 3.4.2.1. of Division B, Article 9.9.8.2. of Division B Floor areas shall be served by not fewer than 2 exits except as permitted by Sentence 3.4.2.1.(2).	Floor areas may be served by a single exit within the limits of Sentence 3.4.2.1.(2) provided: (a) the building does not exceed 3 storeys in building height, (b) the building is sprinklered with fast response sprinklers, and (c) all floor areas are protected by a system of smoke detectors connected to a fire alarm system.
23	Reduction of Exit Width Sentence 3.4.3.3.(2), Article 9.9.6.1. of Division B Swinging doors in their swing shall not reduce the effective width of exit stairs and landings to less than 750 mm.	Existing swinging doors in their swing are permitted to reduce the effective width of exit stairs and landings to a minimum of 550 mm provided: (a) they serve Group C or D occupancies, (b) the building does not exceed 4 storeys in building height, and (c) the building is sprinklered.
24	Fire Separation of Exits Article 3.4.4.1. of Division B, Subsection 9.9.4. of Division B Exits are required to be separated from the remainder of the floor area by a fire separation having a fire-resistance rating of not less than 3/4h.	1. Buildings of 3 storeys or less may have exits that are separated by a fire separation that does not have a fire-resistance rating provided: (a) the building is sprinklered with fast response sprinklers, and (b) the sprinkler system is supervised in accordance with Sentence 3.2.4.9.(2). 2. Buildings not exceeding 6 storeys in building height may have exits that are separated by a 3/4 h fire separation provided the building is sprinklered.
25	Exits Through Lobbies Article 3.4.4.2. of Division B, Article 9.9.8.5. of Division B Rooms adjacent to the lobby are required to be separated by a fire separation.	Rooms adjacent to the lobby are not required to be separated by a fire separation provided: (a) the floor area is sprinklered with fast response sprinklers, and (b) smoke detectors are installed in the adjacent rooms.
26	Rooms Opening into Exit Sentence 3.4.4.4.(7), Article 9.9.5.9. of Division B Service rooms and ancillary rooms are not permitted to open directly into an exit.	Service rooms and ancillary rooms may open directly into an exit provided: (a) the room is sprinklered with fast response sprinklers, and (b) weatherstripping is installed on the door to prevent the passage of smoke.
27	Illumination of Exit Signs Sentence 3.4.5.1.(2) to 3.4.5.1.(4), Sentence 9.9.11.2.(2) to (4) Exit signs are required to be illuminated continuously while the building is occupied.	Where exit signage may compromise historic appearances, or authenticity of displays, exit signs may be installed to light only on an emergency condition, such as by the fire alarm system or due to power failure.
28	Clearance from Exit Doors Sentence 3.4.6.11.(1), Article 9.9.6.6. of Division B Stair risers shall not be closer than 300 mm from an exit door.	Except as permitted in Sentences 3.4.6.10.(2) or 9.9.6.6.(2), existing exit doors shall not extend beyond the first riser.
29	Fire Escapes Subsection 3.4.7. of Division B, Sentence 9.9.2.1.(2) Fire escapes are required to conform to Subsection 3.4.7. of Division B	Existing fire escapes that do not completely conform to Subsection 3.4.7. of Division B. are acceptable provided: (a) the fire escapes are acceptable and (b) the building is sprinklered.
30	Fire Escape Construction Article 3.4.7.2. of Division B, Sentence 9.9.2.1.(2)	Existing combustible fire escapes are permitted if the building is permitted to be of combustible construction by Part 3 of Division B, Part 9 of Division B or by these Compliance Tables.
31	Protection of Fire Escapes Article 3.4.7.4. of Division B, Sentence 9.9.2.1.(2) Openings in the exterior wall adjacent to the fire escape are required to be protected by closures.	Existing openings in the exterior wall adjacent to the fire escape are not required to be protected by closures provided: (a) the building is sprinklered, and (b) a sprinkler head is located within 1.5 m of the opening required to be protected by Article 3.4.7.4. of Division B
32	Vertical Service Space Article 3.6.3.1. of Division B Vertical service spaces are required to be separated from the adjacent floor area by a rated fire separation.	Existing vertical service spaces that do not completely conform to the rated fire separation requirements are acceptable provided the vertical service spaces are sprinklered.
33	Height and Area of Rooms Subsection 3.7.1. of Division B, Section 9.5. of Division B The height and area of rooms are required to comply to minimum dimension requirements.	Existing rooms are not required to comply to the minimum dimension requirements of Subsection 3.7.1. of Division B or Section 9.5. of Division B
34	Washroom Requirements Subsection 3.7.2. of Division B, Section 9.31. of Division B Buildings are required to be provided with a minimum number of washroom fixtures.	Existing facilities are not required to completely comply to the requirements of Subsection 3.7.2. of Division B or Section 9.31. of Division B provided it is acceptable to the authority having jurisdiction.
35	Access for Persons with Disabilities Section 3.8. of Division B	Article 3.8.4.5. of Division B shall apply to existing buildings.
36	Seismic Anchorage of Exterior Decoration Subsection 4.1.8. of Division B	Existing exterior decorations are not required to fully comply to the anchorage requirements of Subsection 4.1.8. of Division B provided: (a) adequate means of protection is provided, or (b) there is no exposure to the public.
37	Mechanical Systems Part 6 of Division B and Part 7 of Division B	Existing mechanical systems in buildings are not required to fully comply to the requirements of Parts 6 of Division B or 7 of Division B provided: (a) it is not an unsafe condition and (b) it is acceptable to the authority having jurisdiction.