Residential Group R-2 R-2.1 and R-2.2

Residential Group R-2 R-2.1 and R-2.2


Occupancy is sprinklered
If building is more than three stories high or has more than 16 dwelling or sleeping units, automatic fire alarm system is required: common areas notification appliances and audible device in each bedroom. Notification appliances activated by sprinkler waterflow switch. Visible alarm notification shall be provided in each living unit designated for hearing impaired.
If building is less than four stories high, has 16 or less dwelling units, or has no interior corridors: only sprinkler system monitoring is required.
Occupancy is NOT sprinklered
If building is more than three stories high or has more than 16 dwelling or sleeping units, manual fire alarm system is required: pull stations at all exits, every level staircase and elevator lobby; common areas notification appliances and audible device in each bedroom. Notification appliances activated by any pull station.
Visible alarm notification shall be provided in each living unit designated for hearing impaired. There is no fire alarm system requirements if building is less than four stories high or has 16 or less dwelling units.
907.2.9.1 Manual fire alarm system. A manual
fire alarm system that activates the occupant notifica-
tion system in accordance with Section 907.5 shall be
installed in Group R-2 occupancies where any of the
following conditions apply:

1. Any dwelling unit or sleeping unit is located
three or more stories above the lowest level of
exit discharge.

2. Any dwelling unit or sleeping unit is located
more than one story below the highest level of
exit discharge of exits serving the dwelling unit
or sleeping unit.

3. The building contains more than 16 dwelling
units or sleeping units.

4. Congregate residences with more than 16 occupants.

Exceptions:
1. A fire alarm system is not required in build-
ings not more than two stories in height where
all dwelling units or sleeping units and contig-
uous attic and crawl spaces are separated from
each other and public or common areas by not
less than 1-hour fire partitions and each dwell-
ing unit or sleeping unit has an exit directly to
a public way, egress court or yard.

2. Manual fire alarm boxes are not required
where the building is equipped throughout
with an automatic sprinkler system installed in
accordance with Section 903.3.1.1 or
903.3.1.2 and the occupant notification appli-
ances will automatically activate throughout
the notification zones upon a sprinkler water flow.

3. A fire alarm system is not required in build-
ings that do not have interior corridors serving
dwelling units and are protected by an
approved automatic sprinkler system installed
in accordance with Section 903.3.1.1 or
903.3.1.2, provided that dwelling units either
have a means of egress door opening directly
to an exterior exit access that leads directly to
the exits or are served by open-ended corri-
dors designed in accordance with Section
1027.6, Exception 3.
2019 CBC 907.2.9.1

Smoke alarms
Smoke alarms shall be installed in accordance with 2019 CBC 907.2.10 and as detailed in 2019 CBC 907.2.10.2 Smoke alarms shall be equipped with a battery backup as per 2019 CBC 907.2.10.6 Multiple smoke alarm installed within an individual dwelling or sleeping unit shall be wired in tandem as per 2019 CBC 907.2.10.5 Smoke alarms can be substituted with system smoke detectors as per 2019 CBC 907.2.10 Exception
2019 CBC 907.2.9.2
907.2.9.2 Smoke alarms. Single- and multiple-sta-
tion smoke alarms shall be installed in accordance with
Section 907.2.10.
907.2.10 Single‑ and multiple‑station smoke alarms.
Listed single- and multiple-station smoke alarms comply-
ing with UL 217 shall be installed in accordance with Sec-
tions 907.2.10.1 through 907.2.10.7 and NFPA 72.

Exception: For Group R occupancies. A fire alarm sys-
tem with smoke detectors located in accordance with
this section may be installed in lieu of smoke alarms.
Upon actuation of the detector, only those notification
appliances in the dwelling unit or guest room where the
detector is actuated shall activate.

907.2.10 Single‑ and multiple‑station smoke alarms.
Listed single- and multiple-station smoke alarms comply-
ing with UL 217 shall be installed in accordance with Sec-
tions 907.2.10.1 through 907.2.10.7 and NFPA 72.

Exception: For Group R occupancies. A fire alarm sys-
tem with smoke detectors located in accordance with
this section may be installed in lieu of smoke alarms.
Upon actuation of the detector, only those notification
appliances in the dwelling unit or guest room where the
detector is actuated shall activate.

907.2.10.2 Groups R-2, R-2.1, R-2.2, R-3, R-3.1,
R-4 and R-4.1.
Single- or multiple-station smoke
alarms shall be installed and maintained in Groups R-2,
R-2.1, R-2.2, R-3, R-3.1 and R-4 regardless of occupant
load at all of the following locations:

1. On the ceiling or wall outside of each separate
sleeping area in the immediate vicinity of bedrooms.

2. In each room used for sleeping purposes.

3. In each story within a dwelling unit, including
basements but not including crawl spaces and
uninhabitable attics. In dwellings or dwelling
units with split levels and without an intervening
door between the adjacent levels, a smoke alarm
installed on the upper level shall suffice for the
adjacent lower level provided that the lower level
is less than one full story below the upper level.

4. In a Group R-3.1 occupancies, in addition to the
above, smoke alarms shall be provided through-
out the habitable areas of the dwelling unit
except kitchens.
907.2.10.5 Interconnection. Where more than one
smoke alarm is required to be installed within an indi-
vidual dwelling unit or sleeping unit in Group R occu-
pancies, the smoke alarms shall be interconnected in
such a manner that the activation of one alarm will acti-
vate all of the alarms in the individual unit. Physical
interconnection of smoke alarms shall not be required
where listed wireless alarms are installed and all alarms
sound upon activation of one alarm. The alarm shall be
clearly audible in all bedrooms over background noise
levels with all intervening doors closed.
907.2.10.6 Power source. In new construction, and
in newly classified Group R-3.1 occupancies,
required
smoke alarms shall receive their primary power from
the building wiring where such wiring is served from a
commercial source and shall be equipped with a battery
backup. Smoke alarms with integral strobes that are not
equipped with battery backup shall be connected to an
emergency electrical system in accordance with Sec-
tion 2702. Smoke alarms shall emit a signal when the
batteries are low. Wiring shall be permanent and with-
out a disconnecting switch other than as required for
overcurrent protection.

Exception: Smoke alarms are not required to be
equipped with battery backup where they are con-
nected to an emergency electrical system that com-
plies with Section 2702.


Provision for future addition of visible alarm notification
If fire alarm system is required, all dwelling and sleeping units shall be provided with capability to accommodate hearing impaired occupants. Since code doesn’t provide definitive description of how such capability might be achieved, local AHJ should be consulted for acceptable system arrangements.
907.5.2.3.3 Group R-2. In Group R-2 occupan-
cies required by Section 907 to have a fire alarm
system, each story that contains dwelling units and
sleeping units shall be provided with the capability
to support visible alarm notification appliances in
accordance with NFPA 72. Such capability shall
accommodate wired or wireless equipment. The
future capability shall include one of the following:

1. The interconnection of the building fire alarm
system with the unit smoke alarms.

2. The replacement of audible appliances with
combination audible/visible appliances.

3. The future extension of the existing wiring
from the unit smoke alarm locations to
required locations for visible appliances.
2019 CBC 907.5.2.3.3
2019 CBC 907.5.2.3.3


Licensed Group R-2.1 occupancies, NOT sprinklered
Manual and automatic fire alarm system: pull stations at all exits, every level staircase and elevator lobby; smoke detectors in common areas; common areas notification appliances and audible device in each bedroom. Notification appliances activated by any manual pull station or smoke detector. Smoke alarms or system smoke detectors shall be installed as per 2019 CBC 907.2.9.4.1
2019 CBC 907.2.9.4.1

Licensed Group R-2.1 occupancies, sprinklered
Manual and automatic fire alarm system: pull stations at all exits, every level staircase and elevator lobby; common areas notification appliances and audible device in each bedroom. Notification appliances activated by any manual pull station or sprinkler waterflow switch. Smoke alarms or system smoke detectors shall be installed as per 2019 CBC 907.2.9.4.1
2019 CBC 907.2.9.4.1

907.2.9.4 Licensed Group R-2.1 occupancies. Licensed
Group R-2.1 occupancies housing more than six nonam-
bulatory, elderly clients shall be provided with an
approved manual and automatic fire alarm system.

Exceptions: Buildings housing nonambulatory cli-
ents on the first story only and which are protected
throughout by the following:

1. An approved and supervised automatic sprin-
kler system, as specified in Sections 903.3.1.1
or 903.3.1.2, which upon activation will initi-
ate the fire alarm system to notify all occupants.

2. A manual fire alarm system.

3. Smoke alarms required by Section 907.2.11.
2019 CBC 907.2.9.4
2019 CBC 907.2.9.4
907.2.9.4.1 Smoke alarms. Single- and multiple-sta-
tion smoke alarms shall be installed in accordance
with Section 907.2.11.
907.2.9.4.1 Smoke alarms. Single- and multiple-sta-
tion smoke alarms shall be installed in accordance
with Section 907.2.11.


Group R-2 college and university buildings
Automatic smoke detection system and notification appliances shall be provided in all common areas and in corridors. Smoke alarms or system smoke detectors as per 2019 CBC 907.2.10
2019 CBC 907.2.10
shall be installed in all dwelling and sleeping units.
907.2.9.3 Group R-2 college and university build-
ings.
An automatic smoke detection system that acti-
vates the occupant notification system in accordance
with Section 907.5 shall be installed in Group R-2 occu-
pancies operated by a college or university for student or
staff housing in all of the following locations:

1. Common spaces outside of dwelling units and
sleeping units.

2. Laundry rooms, mechanical equipment rooms
and storage rooms.

3. All interior corridors serving sleeping units or
dwelling units.

Exception: An automatic smoke detection
system is not required in buildings that do not
have interior corridors serving sleeping units
or dwelling units and where each sleeping unit
or dwelling unit either has a means of egress
door opening directly to an exterior exit access
that leads directly to an exit or a means of
egress door opening directly to an exit.

Required smoke alarms in dwelling units and sleep-
ing units in Group R-2 occupancies operated by a col-
lege or university for student or staff housing shall be
interconnected with the fire alarm system in accordance
with NFPA 72.
907.2.10 Single‑ and multiple‑station smoke alarms.
Listed single- and multiple-station smoke alarms comply-
ing with UL 217 shall be installed in accordance with Sec-
tions 907.2.10.1 through 907.2.10.7 and NFPA 72.

Exception: For Group R occupancies. A fire alarm sys-
tem with smoke detectors located in accordance with
this section may be installed in lieu of smoke alarms.
Upon actuation of the detector, only those notification
appliances in the dwelling unit or guest room where the
detector is actuated shall activate.

2019 CBC 907.2.9.3
2019 CBC 907.2.9.3


Additional Requirements as applicable.
 
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