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In all occupancies other than Group U, an automatic sprinkler system shall be installed for building design or hazards in the locations set forth in Sections 903.2.11.1 through 903.2.11.6.
903.2.11.1 Stories Without Openings
An automatic sprinkler system shall be installed throughout all stories, including basements, of all buildings where the floor area exceeds 1,500 square feet (139 m2) and where the story does not comply with the following criteria for exterior wall openings:
  1. Openings below grade that lead directly to ground level by an exterior stairway complying with Section 1011 or an outside ramp complying with Section 1012. Openings shall be located in each 50 linear feet (15 240 mm), or fraction thereof, of exterior wall in the story on not fewer than one side. The required openings shall be distributed such that the lineal distance between adjacent openings does not exceed 50 feet (15 240 mm).
  2. Openings entirely above the adjoining ground level totaling not less than 20 square feet (1.86 m2) in each 50 linear feet (15 240 mm), or fraction thereof, of exterior wall in the story on not fewer than one side. The required openings shall be distributed such that the lineal distance between adjacent openings does not exceed 50 feet (15 240 mm). The height of the bottom of the clear opening shall not exceed 44 inches (1118 mm) measured from the floor.
903.2.11.1.1 Opening Dimensions and Access
Openings shall have a minimum dimension of not less than 30 inches (762 mm). Access to such openings shall be provided for the fire department from the exterior and shall not be obstructed in a manner such that fire fighting or rescue cannot be accomplished from the exterior.
903.2.11.1.2 Openings on One Side Only
Where openings in a story are provided on only one side and the opposite wall of such story is more than 75 feet (22 860 mm) from such openings, the story shall be equipped throughout with an approved automatic sprinkler system, or openings shall be provided on not fewer than two sides of the story.
903.2.11.1.3 Basements
Where any portion of a basement is located more than 75 feet (22 860 mm) from openings required by Section 903.2.11.1, or where walls, partitions or other obstructions are installed that restrict the application of water from hose streams, the basement shall be equipped throughout with an approved automatic sprinkler system.
903.2.11.2 Rubbish and Linen Chutes
An automatic sprinkler system shall be installed at the top of rubbish and linen chutes and in their terminal rooms. Chutes shall have additional sprinkler heads installed at alternate floors and at the lowest intake. Where a rubbish chute extends through a building more than one floor below the lowest intake, the extension shall have sprinklers installed that are recessed from the drop area of the chute and protected from freezing in accordance with Section 903.3.1.1. Such sprinklers shall be installed at alternate floors, beginning with the second level below the last intake and ending with the floor above the discharge. Access to sprinklers in chutes shall be provided for servicing.
903.2.11.3 Buildings 55 Feet or More in Height
An automatic sprinkler system shall be installed throughout buildings that have one or more stories with an occupant load of 30 or more located 55 feet (16 764 mm) or more above the lowest level of fire department vehicle access, measured to the finished floor.
Exception: Occupancies in Group F-2.
903.2.11.4 Ducts Conveying Hazardous Exhausts
Where required by the International Mechanical Code, automatic sprinklers shall be provided in ducts conveying hazardous exhaust or flammable or combustible materials.
Exception: Ducts where the largest cross-sectional diameter of the duct is less than 10 inches (254 mm).
903.2.11.5 Commercial Cooking Operations
An automatic sprinkler system shall be installed in commercial kitchen exhaust hood and duct systems where an automatic sprinkler system is used to comply with Section 904.
903.2.11.6 Other Required Fire Protection Systems
In addition to the requirements of Section 903.2, the provisions indicated in Table 903.2.11.6 require the installation of a fire protection system for certain buildings and areas.
TABLE 903.2.11.6
ADDITIONAL REQUIRED FIRE PROTECTION SYSTEMS
SECTION SUBJECT
903.2.10.2 Mechanical-access enclosed parking garages
914.2.1 Covered and open mall buildings
914.3.1 High-rise buildings
914.4.1 Atriums
914.5.1 Underground structures
914.6.1 Stages
914.7.1 Special amusement buildings
914.8.2 Airport traffic control towers
914.8.3, 914.8.6 Aircraft hangars
914.9 Flammable finishes
914.10 Drying rooms
914.11.1 Ambulatory care facilities
1030.6.2.3 Smoke-protected assembly seating
1103.5.1 Existing Group A occupancies
1103.5.2 Pyroxylin plastic storage in existing buildings
1103.5.3 Existing Group I-2 occupancies
1103.5.5 Existing Group I-2, Condition 2 occupancies
1103.5.5 Pyroxylin plastics
Table 1207.7, Table 1207.8, Table 1206.9, Table 1206.10 Stationary and mobile energy storage systems
2108.2 Dry cleaning plants
2108.3 Dry cleaning machines
2309.3.1.5.2 Hydrogen motor fuel-dispensing area canopies
2404.2 Spray finishing in Group A, E, I or R
2404.4 Spray booths and spray rooms
2405.2 Dip-tank rooms in Group A, I or R
2405.4.1 Dip tanks
2405.9.4 Hardening and tempering tanks
2703.10 HPM facilities
2703.10.1.1 HPM work station exhaust
2703.10.2 HPM gas cabinets and exhausted enclosures
2703.10.3 HPM exit access corridor
2703.10.4 HPM exhaust ducts
2703.10.4.1 HPM noncombustible ducts
2703.10.4.2 HPM combustible ducts
2807.3 Lumber production conveyor enclosures
2808.7 Recycling facility conveyor enclosures
3006.1 Class A and B ovens
3006.2 Class C and D ovens
Table 3206.2 Storage fire protection
3206.4 Storage
3210.1.1 Record storage over 12 feet
3704.5 Storage of more than 1,000 cubic feet of loose combustible fibers
5003.8.4.1 Gas rooms
5003.8.5.3 Exhausted enclosures
5004.5 Indoor storage of hazardous materials
5005.1.8 Indoor dispensing of hazardous materials
5104.4.1 Aerosol product warehouses
5106.3.2 Aerosol display and merchandising areas
5306.2.1 Exterior medical gas storage room
5306.2.2 Interior medical gas storage room
5306.2.3 Medical gas storage cabinet
5606.5.2.1 Storage of smokeless propellant
5606.5.2.3 Storage of small arms primers
5704.3.7.5.1 Flammable and combustible liquid storage rooms
5704.3.8.4 Flammable and combustible liquid storage warehouses
5705.3.7.3 Flammable and combustible liquid Group H-2 or H-3 areas
6004.1.2 Gas cabinets for highly toxic and toxic gas
6004.1.3 Exhausted enclosures for highly toxic and toxic gas
6004.2.2.6 Gas rooms for highly toxic and toxic gas
6004.3.3 Outdoor storage for highly toxic and toxic gas
6504.1.1 Pyroxylin plastic storage cabinets
6504.1.3 Pyroxylin plastic storage vaults
6504.2 Pyroxylin plastic storage and manufacturing
For SI: 1 cubic foot = 0.023 m3.

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