Part 3 Health and Safety

Question 1

What is a fire compartment?

Answer 1

An enclosed space in a building separated from all other parts by construction that provides a fire separation with a required fire-resistance rating.

Question 2

What does fire-resistance rating mean?

Answer 2

The time (in minutes or hours) a material or assembly can withstand fire, heat transmission, and flame passage under specific test conditions outlined in the Code.

Question 3

What is a fire separation?

Answer 3

A construction assembly that acts as a barrier to prevent the spread of fire.

Question 4

What is a major occupancy?

Answer 4

The principal use of a building or part of it, including any subsidiary occupancies that are integral to the main use.

Question 5

What is an A1 occupancy?

Answer 5

Assembly occupancies intended for producing and viewing performing arts.

Question 6

What is an A2 occupancy?

Answer 6

Assembly occupancies not elsewhere classified in Group A.

Question 7

What is an A3 occupancy?

Answer 7

Assembly occupancies of the arena type.

Question 8

What is an A4 occupancy?

Answer 8

Assembly occupancies where occupants gather in the open air.

Question 9

What is a B1 occupancy?

Answer 9

Detention occupancies where people are restrained or unable to self-preserve due to security measures beyond their control.

Question 10

What is a B2 occupancy?

Answer 10

Care and Treatment occupancies.

Question 11

What is a B3 occupancy?

Answer 11

Care occupancies.

Question 12

What is a C occupancy?

Answer 12

Residential occupancies.

Question 13

What is a D occupancy?

Answer 13

Business and personal services occupancies.

Question 14

What is an E occupancy?

Answer 14

Mercantile occupancies.

Question 15

What does occupancy mean?

Answer 15

The use or intended use of a building or part of it for sheltering or supporting persons, animals, or property.

Question 16

What is a low-hazard industrial occupancy (Group F, Division 3)?

Answer 16

An industrial occupancy where the combustible content is not more than 50 kg/m² or 1,200 MJ/m² of floor area.

Question 17

What is a medium-hazard industrial occupancy (Group F, Division 2)?

Answer 17

An industrial occupancy where the combustible content exceeds 50 kg/m² or 1,200 MJ/m² of floor area, but is not classified as a high-hazard industrial occupancy.

Question 18

What is a high-hazard industrial occupancy (Group F, Division 1)?

Answer 18

An industrial occupancy with enough highly combustible, flammable, or explosive materials that, due to their inherent characteristics, create a special fire hazard.

Question 19

What makes a high-hazard industrial occupancy unique?

Answer 19

It contains sufficient quantities of highly combustible, flammable, or explosive materials that pose a special fire hazard due to their inherent properties.

Question 20

When can a building with multiple major occupancies be deemed a single major occupancy?

Answer 20

When all occupancies belong to the same Group classification or, if divided, the same Division classification per Table 3.1.2.1.

Question 21

How is an arena-type building used occasionally for trade shows classified?

Answer 21

As a Group A, Division 3 occupancy.

Question 22

Under what conditions can a police station with detention quarters be classified as Group B, Division 2?

Answer 22

If it’s not more than 1 storey in height and 600 m² in building area.

Question 23

When can a Group B, Division 3 occupancy be classified as Group C within Part 3?

Answer 23

If occupants live as a single housekeeping unit in a suite with ≤10 people sleeping, and ≤2 need evacuation assistance.

Question 24

How are buildings storing baled combustible fibres classified?

Answer 24

As medium-hazard industrial occupancies (Group F, Division 2).

Question 25

When can a building with multiple major occupancies be deemed a single major occupancy?

Answer 25

When all occupancies belong to the same Group classification or, if divided, the same Division classification per Table 3.1.2.1.

Question 26

How is an arena-type building used occasionally for trade shows classified?

Answer 26

As a Group A, Division 3 occupancy.

Question 27

Under what conditions can a police station with detention quarters be classified as Group B, Division 2?

Answer 27

If it’s not more than 1 storey in height and 600 m² in building area.

Question 28

When can a Group B, Division 3 occupancy be classified as Group C within Part 3?

Answer 28

If occupants live as a single housekeeping unit in a suite with ≤10 people sleeping, and ≤2 need evacuation assistance.

Question 29

How are buildings storing baled combustible fibres classified?

Answer 29

As medium-hazard industrial occupancies (Group F, Division 2).

Question 30

When can a restaurant be classified as a Group E major occupancy within Part 3?

Answer 30

If it’s designed for ≤30 persons consuming food or drink.

Question 31

What’s the fire-resistance rating exception for a building ≤3 storeys with ≤2 dwelling units and a Group E occupancy?

Answer 31

The fire separation between them needs only a 1-hour fire-resistance rating.

Question 32

When do fire separation requirements not apply at openings through horizontal separations?

Answer 32

In buildings meeting Articles 3.2.8.2 to 3.2.8.8, at the vertical plane around the perimeter of the opening.

Question 33

What is an exposing building face?

Answer 33

The part of a building’s exterior wall facing one direction, from ground level to the top storey ceiling, or, if divided into fire compartments, the exterior wall of a fire compartment facing one direction.

Question 34

What does limiting distance refer to?

Answer 34

The distance from an exposing building face to a property line, street centerline, lane, public thoroughfare, or an imaginary line between two buildings or fire compartments on the same property, measured at right angles.

Question 35

What is a fire compartment?

Answer 35

An enclosed space in a building separated from all other parts by construction providing a fire separation with a required fire-resistance rating.

Question 36

How is the exposing building face determined in a building with fire compartments?

Answer 36

It’s the exterior wall of a specific fire compartment facing one direction.

Question 37

What factors does limiting distance measure between?

Answer 37

An exposing building face and a property line, street centerline, lane, thoroughfare, or an imaginary line between buildings or fire compartments on the same property.

Question 38

What role does fire separation play in a fire compartment?

Answer 38

It encloses the space, separating it from the rest of the building with a required fire-resistance rating.

Question 39

What is an unprotected opening in the context of an exposing building face?

Answer 39

A doorway, window, or opening without a closure that has the required fire-protection rating, or any part of a wall in the exposing building face with a fire-resistance rating less than required.

Question 40

What types of openings can be considered unprotected?

Answer 40

Doorways, windows, or other openings lacking a closure with the necessary fire-protection rating.

Question 41

How does a wall contribute to an unprotected opening?

Answer 41

If part of the exposing building face wall has a fire-resistance rating lower than required, it’s considered an unprotected opening.

Question 42

What makes a closure insufficient for an opening to be protected?

Answer 42

It lacks the required fire-protection rating.

Question 43

Why is the fire-resistance rating important for an exposing building face?

Answer 43

It determines whether an opening or wall section is unprotected if it falls below the required rating.

Question 44

How must an exterior wall enclosing an attic or roof space above an exposing building face be constructed?

Answer 44

It must conform to the requirements for the exposing building face.

Question 45

What governs the fire-resistance rating, construction, and cladding of an exposing building face for Groups A, B, C, D, or F-3?

Answer 45

Table 3.2.3.7, unless exceptions in Sentences (3), (4), or Articles 3.2.3.10 and 3.2.3.11 apply.

Question 46

When can an exposing building face of a low-hazard industrial occupancy building avoid a fire-resistance rating?

Answer 46

If it’s a one-storey building per Article 3.2.2.91, uses noncombustible construction, isn’t a loadbearing wall, and has a limiting distance of at least 3 meters.

Question 47

What are the conditions for a low-hazard industrial building’s exposing building face to use noncombustible construction without a fire-resistance rating?

Answer 47

It must not be a loadbearing wall, and the limiting distance must be ≥3 meters.

Question 48

What type of occupancy is eligible for the exception in Article 3.2.3.11?

Answer 48

Low-hazard industrial occupancy (Group F, Division 3) conforming to Article 3.2.2.91.