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ExAC > Exam 2 COPY > Flashcards

Exam 2 COPY Flashcards

1
Q

WHAT IS THE DIFFERENCE BETWEEN
FLAME SPREAD RATING AND
FIRE RESISTANCE RATING?

A
  • Flame-spread rating: index or classification indicating the extent of spread-of-flame on the surface of a material or an assembly of materials as determined in a standard fire test (1.4.1.2). The higher the rating the more susceptible to flame spread the material is.
  • Fire-resistance rating: the time in minutes or hours that a material or assembly will withstand the passage of flame and the transmission of
    heat when exposed to fire under specific conditions of test and performance criteria. (1.4.1.2). The higher the rating the longer it takes for the passage of flame through the assembly or material.
    (NBC)
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2
Q

WHAT IS THE DIFFERENCE BETWEEN
A FIREWALL AND A FIRE SEPARATION?

A

Firewall: a type of fire separation of non-combustible construction that subdivides a building or separates adjoining buildings to resist the spread of fire and that has a fire resistance rating (as prescribed by the
code) and structural stability to remain intact under fire conditions for the required fire rating time. (1.4.1.2)

Fire separation: a construction assembly that acts as a barrier against the spread of fire. (1.4.1.2)

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3
Q

WHAT IS A FIRE STOP?

A

Fire stop means a system consisting of a material, component, and means of support used to fill gaps between fire separations or between fire separations and other assemblies, or used around items that wholly or partially penetrate a fire separation

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4
Q

WHAT IS THE DIFFERENCE BETWEEN AN
INTERCONNECTED FLOOR SPACE AND A MEZZANINE?

A

Interconnected floor space: superimposed floor areas or parts of floor areas in which floor assemblies that are required to be fire separations are penetrated by openings that are not provided with closures.
(1.4.1.2)

Mezzanine: an intermediate floor assembly between the floor and ceiling of any room or storey and includes an interior balcony. (1.4.1.2

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5
Q

WHAT DOES C.A.C.F. STAND FOR?

A

Central Alarm and Control Facility

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6
Q

WHAT IS LIMITING DISTANCE AND WHY IS IT IMPORTANT?

A

Limiting distance means the distance from an exposing building face to a property line, the centre line of a street, lane or public thoroughfare, or to an imaginary line between 2 buildings or fire compartments on the same property, measured at right angles to the exposing building face. (1.4.1.2)

Important because will determine the amount of allowable unprotected openings; and construction type and cladding for exposing building face. (3.2.3)

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7
Q

WHAT IS THE DIFFERENCE BETWEEN
A HANDRAIL AND A GUARD?

A

Handrail: assisting device along stairs and ramps.

Guard: a protective barrier around openings in floors or at the open sides of stairs, landings, balconies, mezzanines, galleries, raised walkways or other locations to prevent accidental falls from one level to another. Such a barrier may or may not have openings through it.

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8
Q

WHAT IS THE RELATIONSHIP BETWEEN
A MEANS OF EGRESS AND AN EXIT?

A

Means of egress includes exits and access to exits. It is the continuous path of travel provided for the escape of persons from any point in
a building or contained open space to a separate building, an open public thoroughfare, or an exterior open space protected from fire
exposure from the building and having access to an open public thoroughfare.
(1.4.1.2)

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9
Q

NAME THE OCCUPANCY CLASSIFICATION FOR:
1. GROUP B1, B2, B3
2. GROUP C
3. GROUP D
4. GROUP E

A
  1. Group B: Detention (B1), treatment (B2), and care (B3) occupancies
  2. Group C: Residential occupancies
  3. Group D: Business and personal services occupancies
  4. Group E: Mercantile occupancies
    (NBC 3.1.2.1)
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10
Q

WHAT IS OCCUPANT LOAD AND WHY IS IT IMPORTANT?

A

Occupant load: Determined using the occupancy or use of the floor area, occupant load is the number of persons for which a building or
part thereof is designed. (1.4.1.2)

Occupant load assists in the design of the means of egress. It also helps determine the number of required water closets.

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11
Q

WHEN SHOULD PART 3 OF THE BUILDING CODE BE USED?
WHEN SHOULD PART 9 OF THE BUILDING CODE BE USED?

A

Part 3, 4, 5, and 6 of the building code are used for the following:
- post-disaster buildings are always part 3
- Group A (assembly), Group B (care, treat., detent.), Group F1 (high hazard ind.) are always part 3
- any building over 600sm and 3 stories (including C, D, E, F2, F3)
Part 9 of the building code is used for:
- Group C, D, E, F2, F3 under 600sm and under 3 stories
(NBC 1.3.3)

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12
Q

At what angle is a roof considered a wall?

A

NBC 3.2.1.3.(1)
Any part of a roof that is pitched at an
angle of 60 degrees or more to the
horizontal and is adjacent to a space
intended for occupancy within a building
shall be considered as part of an exterior
wall of a building.

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13
Q

Define access to exit

A

NBC Div A, Part 1, 1.4.1.2
Access to exit means that part of a means
of egress within a floor area that provides
access to an exit serving the floor area.

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14
Q

Define exit

A

NBC Div A, Part 1, 1.4.1.2
Exit means that part of a means of egress, including doorways, that leads from the floor area it serves to a separate building, an open public thoroughfare, or an exterior open space protected from fire exposure from the building and having access to an open public Thoroughfare.

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15
Q

Define means of egress

A

Means of egress means a continuous path of travel provided for the escape of persons from any point in a building or contained open
space to a separate building, an open public thoroughfare, or an exterior open space protected from fire exposure from the building
and having access to an open public thoroughfare. Means of egress includes exits and access to exits.

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16
Q

Describe the difference between Intent
Statements and Application Statements.
Where can these be found?

A

NBC Volume 1, Preface, ix
Intent Statements explain, in plain language, the basic thinking behind each Code provision contained in Division B. They explain how requirement help to achieve their attributed objectives and functional statements. Intent
Statements can be found throughout all the Parts of Division B.

Application Statements summarize what each Code provision does and does not apply to. They provide greater detail than the application information found in the body of the Code. The application statements serve explanatory
purposes only and do not form an integral part of the Code provisions: as such, they are similar in function to appendix notes. Application Statements can be found in Part 1 of each Division (A,B, & C).

17
Q

Describe the fundamental difference
between the National Building Code and
the Fire Code.

A

NBC Volume 1 Preface, p.vi
The NBC generally applies at the time of
construction and reconstruction while the
NFC applies to the operation and
maintenance of the fire-related features of
building in use.

18
Q

Describe the organizational hierarchy of
the National Building Code (eg. Divisions,
Parts, Articles, etc.)

A

NBC, Preface xi
Numbering System:
B Divisions
3 Part
3.5. Section
3.5.2. Subsection
3.5.2.1. Article
3.5.2.1.(2) Sentence
3.5.2.1.(2)(a) Clause
3.5.2.1.(2)(a)(i) Subclause

Has three Divisions - A, B, and C

Division A: Compliance, Objective and Functional Statements
Part 1 - General, definitions and references
Part 2 - Objectives
Part 3 - Functional Statements

Division B: Acceptable Solutions
Part 1 - General
Part 2 - Reserved
Part 3 to 9 - Accepted measures (prescriptive requirement

19
Q

Describe the relationship between
Objectives and Functional Statements in
the National Building Code.

A

NBC Volume 1, Preface, vii and Division A,
2.2. & 3.2.
Objectives state the goals that the code is
trying to achieve. Functional Statements
support and further articulate the
objectives.

20
Q

Explain the difference between a fire block
and a fire stop?

A

NBC Division A, 1.2.1.2.
Fire Block - means a material component or system that restricts the spread of fire within a concealed space or from a concealed space to another adjacent space

Fire stop means a system consisting of a material, component and means of support used to fill gaps between fire separations or between fire separations and other assemblies, or used around items that wholly or partially penetrate a fire separation.- associated with FRR

21
Q

Explain the difference between Major
Occupancy, Subsidiary Occupancy and
Multiple Major Occupancies.

A

NBC Division A, 1.4.1.2.
Major occupancy means the principal occupancy for which a building or part thereof is used or
intended to be used, and shall be deemed to include the subsidiary occupancies that are an
integral part of the principal occupancy.

Subsidiary occupancies are those that are not the principal occupancy of the building (eg. small retail shop or theatre space in an office building).

3.2.2.6. Multiple Major occupancies occur when you have more than one major occupancy. In a
building containing more that one major occupancy, the requirements for the most restricted occupancy apply to the whole building.

3.2.2.8. To be considered a major occupancy, they must cover at least 10% of the floor area of a storey provided they are not classified as Group F, Division 1 or 2.

22
Q

For a building not provided with a fire
department connection, what is the
maximum distance of a hydrant to the
building?

For a building provided with a fire
department connection, what is the
maximum unobstructed path of travel for
the firefighter from the vehicle to the
building?

A

NBC 3.2.5.5.(2)(b)
90m

NBC 3.2.5.5.(2)(c)
45m

23
Q

How is depth of frost penetration
determined for a building’s foundation?

A

NBC Division B 1.1.3.2.
Depth of frost penetration shall be
established on the basis of local experience.

Typically the Authority Having
Jurisdiction will have building bylaws that
dictate the minimum depth of foundations
to prevent frost penetration.

24
Q

How is the fire resistance rating of an
assembly calculated?

A

NBC Appendix D, D-2.3.4.
Add the fire resistant rating of the material on the fire-exposed side plus the time assigned for the framing members and additional protective measures such as insulation.

For example, if you have a wood frame wall with studs spaced at 400mm o.c. (20 min) and a layer of 12.7mm Type X gypsum wallboard (25
min) on each side, the fire-resistance rating of that assembly is 45 minutes, not 70 minutes.

25
Q

How is travel distance affected from a
mezzanine when you have two exits to
outside from the building vs. one exit?

A

NBC 3.4.2.2.(2)
One exit - measured from furthest point in
mezzanine (longer distance) Two exits - measured from the top of stairs exiting from mezzanine (shorter distance)

26
Q

List the following criteria for access route
design:
1. Minimum width of a lane to be
considered a street.
2. Maximum and minimum distance
between building face and curb of street.
3. Maximum slope.

A

NBC
1. 6m 3.2.5.6.(1)(a)
2. 15m & 3m 3.2.5.5.(1)
3. 1:12.5 over minimum distance of 15m
3.2.5.6.(1)(d)

27
Q

List the four main elements required in an
Alternative Solution report.

A

NBC Division C, 2.3.1.1.
1. Explanation of the required measure that is not to be provided.
2. Analysis of the objectives and functions.
3. Proposed alternative measures.
4. Building code analysis and technical argument on why the alternative measures will be as good as the accepted solution.

28
Q

Under what conditions must a crawl space
be considered a basement?

A

NBC 3.2.2.9.(1)
1. If it exceeds 1.8m in clear height,
2. Is used for any occupancy,
3. Contains flue pipes, or
4. Used as a plenum in combustible
construction

29
Q

What are the firefighting access route
requirements for buildings greater than
600m2 or more than 3 storeys in height?

A

NBC 3.2.5.4.(1) & 3.2.5.5.(1)
Fire department access routes are required
to be within 3m to 15m of a building face.

30
Q

What is a Fire Compartment?

A

NBC Division A, 1.4.1.2.
An enclosed space in a building that is
separated from all other parts of the
building by enclosing construction
providing a fire separation having a
required fire-resistance rating.

31
Q

What is the fire resistance rating required
for a roof-top enclosure for elevator
machinery or for a service room?

A

NBC 3.2.2.14.(1) & (2)
No fire resistance rating required if not
more than 1 storey. If more than one
storey the rooms shall be constructed in
accordance with the type of construction
required by Articles 3.2.2.20. to 3.2.2.88.

32
Q

What is the maximum height difference
you can have without a guard in a Part 9
building?

A

NBC 9.8.8.1. (3)
2 risers or 400mm (16”)

33
Q

What is the maximum number of steps
allowed without a hand rail?

A

NBC 9.8.7.1. (3)
For occupancies other than single dwelling units:
All steps must have a handrail

For single dwelling units:
Interior - 2 risers
Exterior - 3 risers

34
Q

What is the maximum percentage of floor
area that an open vs. enclosed mezzanine
can be?

A

NBC 3.2.1.1.(3) & (4)
Open mezzanine: <40% (visual
obstructions taller than 1070mm not
permitted)
Closed mezzanine: <10% (completely
closed to ceiling or have visual
obstructions taller than 1070mm)

35
Q

What is the minimum number of risers
allowed in an interior run of stairs?

A

NBC 3.4.6.2. (1)
Every flight of interior stairs shall have not
less than 3 risers.

36
Q

When are Parts 3,4,5 and 6 applied to
buildngs?

A

NBC 1.3.3.2.(1)
Post-disaster buildings
Building used for major occupancies classified as:
- Group A, assembly
- Group B, care, treatment or detention
- Group F, Division 1, high-hazard industrial
- Group C,D,E,and F2 & F3 exceeding 600 s.m. in
building area or exceeding 3 storeys in building
height

37
Q
A
38
Q

Kk

A

Kn

ExAC (8 decks)

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