Page 144 - 2018_IFC
P. 144
FIRE PROTECTION AND LIFE SAFETY SYSTEMS
contents, where approved by the fire code offi- 903.3.1.2.3 Attics. Attic protection shall be pro-
cial. vided as follows:
3. Generator and transformer rooms separated 1. Attics that are used or intended for living pur-
from the remainder of the building by walls poses or storage shall be protected by an auto-
and floor/ceiling or roof/ceiling assemblies matic sprinkler system.
having a fire-resistance rating of not less than 2. Where fuel-fired equipment is installed in an
2 hours.
unsprinklered attic, not fewer than one quick-
4. Rooms or areas that are of noncombustible con- response intermediate temperature sprinkler
struction with wholly noncombustible contents. shall be installed above the equipment.
5. Fire service access elevator machine rooms 3. Where located in a building of Type III, Type
and machinery spaces. IV or Type V construction designed in accor-
6. Machine rooms, machinery spaces, control dance with Section 510.2 or 510.4 of the Inter-
rooms and control spaces associated with national Building Code, attics not required by
occupant evacuation elevators designed in Item 1 to have sprinklers shall comply with
accordance with Section 3008 of the Interna- one of the following if the roof assembly is
tional Building Code. located more than 55 feet (16 764 mm) above
the lowest level of required fire department
903.3.1.1.2 Bathrooms. In Group R occupancies, vehicle access:
sprinklers shall not be required in bathrooms that do
2
not exceed 55 square feet (5 m ) in area and are 3.1. Provide automatic sprinkler system
located within individual dwelling units or sleeping protection.
units, provided that walls and ceilings, including the 3.2. Construct the attic using noncombust-
walls and ceilings behind a shower enclosure or tub, ible materials.
are of noncombustible or limited-combustible mate- 3.3. Construct the attic using fire-
rials with a 15-minute thermal barrier rating.
retardant-treated wood complying
903.3.1.2 NFPA 13R sprinkler systems. Automatic with Section 2303.2 of the
sprinkler systems in Group R occupancies up to and International Building Code.
including four stories in height in buildings not exceed- 3.4. Fill the attic with noncombustible
ing 60 feet (18 288 mm) in height above grade plane insulation.
shall be permitted to be installed throughout in accor-
dance with NFPA 13R. The height of the roof assembly shall be
determined by measuring the distance from
The number of stories of Group R occupancies con-
structed in accordance with Sections 510.2 and 510.4 of the lowest required fire vehicle access road
the International Building Code shall be measured from surface adjacent to the building to the eave of
the horizontal assembly creating separate buildings. the highest pitched roof, the intersection of the
highest roof to the exterior wall, or the top of
903.3.1.2.1 Balconies and decks. Sprinkler protec- the highest parapet, whichever yields the
tion shall be provided for exterior balconies, decks greatest distance. For the purpose of this mea-
and ground floor patios of dwelling units and sleep- surement, required fire vehicle access roads
ing units where either of the following conditions shall include only those roads that are neces-
exists: sary for compliance with Section 503.
1. The building is of Type V construction, pro- 4. Group R-4, Condition 2 occupancy attics not
vided that there is a roof or deck above. required by Item 1 to have sprinklers shall
2. Exterior balconies, decks and ground floor comply with one of the following:
patios of dwelling units and sleeping units are 4.1. Provide automatic sprinkler system
constructed in accordance with Section protection.
705.2.3.1, Exception 3 of the International
Building Code. 4.2. Provide a heat detection system
throughout the attic that is arranged to
Sidewall sprinklers that are used to protect such activate the building fire alarm
areas shall be permitted to be located such that their system.
deflectors are within 1 inch (25 mm) to 6 inches
(152 mm) below the structural members and a maxi- 4.3. Construct the attic using noncombust-
mum distance of 14 inches (356 mm) below the ible materials.
deck of the exterior balconies and decks that are 4.4. Construct the attic using fire-
constructed of open wood joist construction. retardant-treated wood complying
with Section 2303.2 of the
903.3.1.2.2 Open-ended corridors. Sprinkler pro-
tection shall be provided in open-ended corridors International Building Code.
and associated exterior stairways and ramps as 4.5. Fill the attic with noncombustible
specified in Section 1027.6, Exception 3. insulation.
2018 INTERNATIONAL FIRE CODE ® 111
Copyrighted © 2017 by, or licensed to, ICC (ALL RIGHTS RESERVED); licensed to UL, LLC pursuant to License Agreement with ICC. No further reproductions authorized or distribution authorized.
ANY UNAUTHROIZED REPRODUCTION OR DISTRIBUTION IS A VIOLATION OF THE FEDERAL COPYRIGHT ACT AND THE LICENSE AGREEMENT; AND SUBJECT TO CIVIL AND CRIMINAL PENALTIES THEREUNDER.
