3.2.2.46.(2)ATTRIBUTION:
Most technical provisions of the BC Fire Code describe how the code’s objectives and functional statements are achieved. However, some provisions, like this one, do not relate directly to a code objective. The following analysis is provided to assist in understanding of the provision.
APPLICATION:
Construction materials in a storey in which more than 10% of the area is classified as a Group C major occupancy. This applies in buildings that:
- are not more than 3 storeys in building height, and
- have a building area not more than the value in Table 3.2.2.46.
This applies to buildings to which Part 3 applies [see Sentence
1.3.3.2.(1) of Division A for application
of Part 3].
INTENT:
To clarify that there are no restrictions on the use of
combustible or noncombustible construction, as defined in Section
3.1.
ATTRIBUTION:
Functional Statement:
F03
To retard the effects of fire on areas beyond its point of origin.
F04
To retard failure or collapse due to the effects of fire.
Objective:
OS1.2, OS1.2, OS1.3
APPLICATION:
Fire separation requirements and fire-resistance rating of floor assemblies and of their supporting loadbearing walls, columns and arches in a storey in which more than 10% of the area is classified as a Group C major occupancy. This applies in buildings that:
- are not more than 3 storeys in building height, and
- have a building area not more than the value in Table 3.2.2.46.
This applies to buildings to which Part 3 applies [see Sentence
1.3.3.2.(1) of Division A for application
of Part 3].
This also applies to:
- a floor assembly over a basement, subject to a minimum fire-resistance rating of 45 min, as provided in Article 3.2.1.4.,
- a portion of a roof assembly that supports an occupancy, as provided in Sentence 3.2.2.13.(1), and
- a mezzanine that is required to be considered as a storey in determining building height, as stated in Sentence 3.2.1.6.(1).
INTENT:
To limit the probability that loadbearing walls, columns
and arches exposed to fire will prematurely fail or collapse, which could
lead to the failure or collapse of supported floor assemblies during the time
required to achieve occupant safety and for emergency responders to perform
their duties, which could lead to harm to persons.
To limit the probability that floor assemblies exposed to
fire will prematurely fail or collapse during the time required to achieve
occupant safety and for emergency responders to perform their duties, which
could lead to harm to persons.
To limit the probability that loadbearing walls, columns
and arches exposed to fire will prematurely fail or collapse, which could
lead to the failure or collapse of supported floor assemblies, which could
lead to the spread of fire from a lower storey of a building to an upper storey
or to the exterior during the time required to achieve occupant safety and
for emergency responders to perform their duties, which could lead to harm
to persons.
To limit the probability that floor assemblies exposed to
fire will prematurely fail or collapse, which could lead to the spread of
fire from a lower storey of a building to an upper storey or to the exterior
of the building during the time required to achieve occupant safety and for
emergency responders to perform their duties, which could lead to harm to
persons.
ATTRIBUTION:
Functional Statement:
F03
To retard the effects of fire on areas beyond its point of origin.
F04
To retard failure or collapse due to the effects of fire.
Objective:
OP1.2, OP1.2, OP1.3
APPLICATION:
Fire separation requirements and fire-resistance rating of floor assemblies and of their supporting loadbearing walls, columns and arches in a storey in which more than 10% of the area is classified as a Group C major occupancy. This applies in buildings that:
- are not more than 3 storeys in building height, and
- have a building area not more than the value in Table 3.2.2.46.
This applies to buildings to which Part 3 applies [see Sentence
1.3.3.2.(1) of Division A for application
of Part 3].
This also applies to:
- a floor assembly over a basement, subject to a minimum fire-resistance rating of 45 min, as provided in Article 3.2.1.4.,
- a portion of a roof assembly that supports an occupancy, as provided in Sentence 3.2.2.13.(1), and
- a mezzanine that is required to be considered as a storey in determining building height, as stated in Sentence 3.2.1.6.(1).
INTENT:
To limit the probability that loadbearing walls, columns
and arches exposed to fire will prematurely fail or collapse, which could
lead to the failure or collapse of supported floor assemblies during the time
required to achieve occupant safety and for emergency responders to perform
their duties, which could lead to damage to the building.
To limit the probability that floor assemblies exposed to
fire will prematurely fail or collapse during the time required to achieve
occupant safety and for emergency responders to perform their duties, which
could lead to damage to the building.
To limit the probability that loadbearing walls, columns
and arches exposed to fire will prematurely fail or collapse, which could
lead to the failure or collapse of supported floor assemblies, which could
lead to the spread of fire from a lower storey of a building to an upper storey
or to the exterior during the time required to achieve occupant safety and
for emergency responders to perform their duties, which could lead to damage
to the building.
To limit the probability that floor assemblies exposed to
fire will prematurely fail or collapse, which could lead to the spread of
fire from a lower storey of a building to an upper storey or to the exterior
of the building during the time required to achieve occupant safety and for
emergency responders to perform their duties, which could lead to damage to
the building.
ATTRIBUTION:
Functional Statement:
F04
To retard failure or collapse due to the effects of fire.
Objective:
OS1.3
APPLICATION:
Fire-resistance rating of mezzanines and of their supporting loadbearing walls, columns and arches in a storey in which more than 10% of the area is classified as a Group C major occupancy. This applies in buildings that:
- are not more than 3 storeys in building height, and
- have a building area not more than the value in Table 3.2.2.46.
This applies to buildings to which Part 3 applies [see Sentence
1.3.3.2.(1) of Division A for application
of Part 3].
INTENT:
To limit the probability that loadbearing walls, columns
and arches exposed to fire will prematurely fail or collapse, which could
lead to the failure or collapse of a supported mezzanine during the time required
to achieve occupant safety and for emergency responders to perform their duties,
which could lead to harm to persons.
To limit the probability that a mezzanine exposed to fire
will prematurely fail or collapse during the time required to achieve occupant
safety and for emergency responders to perform their duties, which could lead
to harm to persons.
ATTRIBUTION:
Functional Statement:
F04
To retard failure or collapse due to the effects of fire.
Objective:
OP1.3
APPLICATION:
Fire-resistance rating of mezzanines and of their supporting loadbearing walls, columns and arches in a storey in which more than 10% of the area is classified as a Group C major occupancy. This applies in buildings that:
- are not more than 3 storeys in building height, and
- have a building area not more than the value in Table 3.2.2.46.
This applies to buildings to which Part 3 applies [see Sentence
1.3.3.2.(1) of Division A for application
of Part 3].
INTENT:
To limit the probability that loadbearing walls, columns
and arches exposed to fire will prematurely fail or collapse, which could
lead to the failure or collapse of a supported mezzanine during the time required
to achieve occupant safety and for emergency responders to perform their duties,
which could lead to damage to the building.
To limit the probability that a mezzanine exposed to fire
will prematurely fail or collapse during the time required to achieve occupant
safety and for emergency responders to perform their duties, which could lead
to damage to the building.
ATTRIBUTION:
Functional Statement:
F04
To retard failure or collapse due to the effects of fire.
Objective:
OS1.3
APPLICATION:
Fire-resistance rating of roof assemblies and of their supporting loadbearing walls, columns and arches in a storey in which more than 10% of the area is classified as a Group C major occupancy. This applies in buildings that:
- are not more than 3 storeys in building height, and
- have a building area not more than the value in Table 3.2.2.46.
This applies to buildings to which Part 3 applies [see Sentence
1.3.3.2.(1) of Division A for application
of Part 3].
INTENT:
To limit the probability that loadbearing walls, columns
and arches exposed to fire will prematurely fail or collapse, which could
lead to the failure or collapse of a supported roof assembly during the time
required to achieve occupant safety and for emergency responders to perform
their duties, which could lead to harm to persons.
To limit the probability that a roof assembly exposed to
fire will prematurely fail or collapse during the time required to achieve
occupant safety and for emergency responders to perform their duties, which
could lead to harm to persons.
ATTRIBUTION:
Functional Statement:
F04
To retard failure or collapse due to the effects of fire.
Objective:
OP1.3
APPLICATION:
Fire-resistance rating of roof assemblies and of their supporting loadbearing walls, columns and arches in a storey in which more than 10% of the area is classified as a Group C major occupancy. This applies in buildings that:
- are not more than 3 storeys in building height, and
- have a building area not more than the value in Table 3.2.2.46.
This applies to buildings to which Part 3 applies [see Sentence
1.3.3.2.(1) of Division A for application
of Part 3].
INTENT:
To limit the probability that loadbearing walls, columns
and arches exposed to fire will prematurely fail or collapse, which could
lead to the failure or collapse of a supported roof assembly during the time
required to achieve occupant safety and for emergency responders to perform
their duties, which could lead to damage to the building.
To limit the probability that a roof assembly exposed to
fire will prematurely fail or collapse during the time required to achieve
occupant safety and for emergency responders to perform their duties, which
could lead to damage to the building.