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FIRE PROTECTION AND LIFE SAFETY SYSTEMS

2. The Group M occupant load is more than 100 per- tion 907.5 shall be installed throughout all interior cor-
sons above or below the lowest level of exit dis- ridors serving sleeping units.
charge. Exception: An automatic smoke detection system is
Exceptions: not required in buildings that do not have interior
corridors serving sleeping units and where each
1. A manual fire alarm system is not required in
covered or open mall buildings complying with sleeping unit has a means of egress door opening
directly to an exit or to an exterior exit access that
Section 402.
leads directly to an exit.
2. Manual fire alarm boxes are not required where [F] 907.2.8.3 Smoke alarms. Single- and multiple-sta-
the building is equipped throughout with an auto- tion smoke alarms shall be installed in accordance with
matic sprinkler system installed in accordance
with Section 903.3.1.1 and the occupant notifica- Section 907.2.10.
tion appliances will automatically activate [F] 907.2.9 Group R-2. Fire alarm systems and smoke
throughout the notification zones upon sprinkler alarms shall be installed in Group R-2 occupancies as
water flow. required in Sections 907.2.9.1 through 907.2.9.3.
[F] 907.2.7.1 Occupant notification. During times that [F] 907.2.9.1 Manual fire alarm system. A manual
the building is occupied, the initiation of a signal from fire alarm system that activates the occupant notifica-
a manual fire alarm box or from a waterflow switch tion system in accordance with Section 907.5 shall be
shall not be required to activate the alarm notification installed in Group R-2 occupancies where any of the
appliances when an alarm signal is activated at a con- following conditions apply:
stantly attended location from which evacuation 1. Any dwelling unit or sleeping unit is located three
instructions shall be initiated over an emergency voice/ or more stories above the lowest level of exit dis-
alarm communication system installed in accordance charge.
with Section 907.5.2.2.
2. Any dwelling unit or sleeping unit is located
[F] 907.2.8 Group R-1. Fire alarm systems and smoke more than one story below the highest level of
alarms shall be installed in Group R-1 occupancies as exit discharge of exits serving the dwelling unit
required in Sections 907.2.8.1 through 907.2.8.3. or sleeping unit.
[F] 907.2.8.1 Manual fire alarm system. A manual 3. The building contains more than 16 dwelling
fire alarm system that activates the occupant notifica- units or sleeping units.
tion system in accordance with Section 907.5 shall be
installed in Group R- 1 occupancies. Exceptions:
1. A fire alarm system is not required in build-
Exceptions:
ings not more than two stories in height where
1. A manual fire alarm system is not required in all dwelling units or sleeping units and contig-
buildings not more than two stories in height uous attic and crawl spaces are separated from
where all individual sleeping units and contig- each other and public or common areas by not
uous attic and crawl spaces to those units are less than 1-hour fire partitions and each dwell-
separated from each other and public or com- ing unit or sleeping unit has an exit directly to
mon areas by not less than 1-hour fire parti- a public way, egress court or yard.
tions and each individual sleeping unit has an
exit directly to a public way, egress court or 2. Manual fire alarm boxes are not required
yard. where the building is equipped throughout
with an automatic sprinkler system installed in
2. Manual fire alarm boxes are not required accordance with Section 903.3.1.1 or
throughout the building where all of the fol- 903.3.1.2 and the occupant notification appli-
lowing conditions are met: ances will automatically activate throughout
2.1. The building is equipped throughout the notification zones upon a sprinkler water
with an automatic sprinkler system flow.
installed in accordance with Section 3. A fire alarm system is not required in build-
903.3.1.1 or 903.3.1.2. ings that do not have interior corridors serving
2.2. The notification appliances will dwelling units and are protected by an
activate upon sprinkler water flow. approved automatic sprinkler system installed
in accordance with Section 903.3.1.1 or
2.3. Not fewer than one manual fire alarm 903.3.1.2, provided that dwelling units either
box is installed at an approved have a means of egress door opening directly
location.
to an exterior exit access that leads directly to
[F] 907.2.8.2 Automatic smoke detection system. An the exits or are served by open-ended corri-
automatic smoke detection system that activates the dors designed in accordance with Section
occupant notification system in accordance with Sec- 1027.6, Exception 3.

234 2018 INTERNATIONAL BUILDING CODE ®
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