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1105.1 General
Existing Group I-2 shall meet all of the following requirements:
  1. The minimum fire safety requirements in Section 1103.
  2. The minimum means of egress requirements in Section 1104.
  3. The additional egress and construction requirements in Section 1105.
Where the provisions of this chapter conflict with the construction requirements that applied at the time of construction, the most restrictive provision shall apply.
1105.2 Applicability
The provisions of Sections 1105.3 through 1105.8, 1105.10 and 1105.11 shall apply to the existing Group I-2 fire area.
1105.3 Construction
Group I-2, Condition 2 shall not be located on a floor level higher than the floor level limitation in Table 1105.3 based on the type of construction.
TABLE 1105.3
FLOOR LEVEL LIMITATIONS FOR GROUP I-2, CONDITION 2
CONSTRUCTION TYPE AUTOMATIC SPRINKLER SYSTEM ALLOWABLE FLOOR LEVELa
1 2 3 4 or more
IA Note b P P P P
Note c P P P P
IB Note b P P P P
Note c P P P P
IIA Note b P P P NP
Note c P NP NP NP
IIB Note b P P NP NP
Note c NP NP NP NP
IIIA Note b P P NP NP
Note c P NP NP NP
IIIB Note b P NP NP NP
Note c NP NP NP NP
IV Note b P P NP NP
Note c NP NP NP NP
VA Note b P P NP NP
Note c NP NP NP NP
VB Note b P NP NP NP
Note c NP NP NP NP
P = Permitted; NP = Not Permitted.
  1. Floor level shall be counted based on the number of stories above grade.
  2. The building is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1.
  3. The building is equipped with an automatic sprinkler system in accordance with Section 1105.8.
1105.4 Incidental Uses in Existing Group I-2
Incidental uses associated with and located within existing single-occupancy or mixed-occupancy Group I-2 buildings and that generally pose a greater level of risk to such occupancies shall comply with the provisions of Sections 1105.4.1 through 1105.4.3.2.1. Incidental uses in Group I-2 occupancies are limited to those listed in Table 1105.4.
TABLE 1105.4
INCIDENTAL USES IN EXISTING GROUP I-2 OCCUPANCIES
ROOM OR AREA SEPARATION AND/OR PROTECTION
Furnace room where any piece of equipment is over 400,000 Btu per hour input 1 hour or provide automatic sprinkler system
Rooms with boilers where the largest piece of equipment is over 15 psi and 10 horsepower 1 hour or provide automatic sprinkler system
Refrigerant machinery room 1 hour or provide automatic sprinkler system
Hydrogen fuel gas rooms, not classified as Group H 2 hours
Incinerator rooms 2 hours and provide automatic sprinkler system
Paint shops not classified as Group H 2 hours; or 1 hour and provide automatic sprinkler system
Laboratories and vocational shops, not classified as Group H 1 hour or provide automatic sprinkler system
Laundry rooms over 100 square feet 1 hour or provide automatic sprinkler system
Patient rooms equipped with padded surfaces 1 hour or provide automatic sprinkler system
Physical plant maintenance shops 1 hour or provide automatic sprinkler system
Waste and linen collection rooms with containers with total volume of 10 cubic feet or greater 1 hour or provide automatic sprinkler system
Storage rooms greater than 100 square feet 1 hour or provide automatic sprinkler system
Stationary storage battery systems having a liquid electrolyte capacity of more than 50 gallons for flooded lead-acid, nickel cadmium or VRLA, or more than 1,000 pounds for lithium-ion and lithium metal polymer used for facility standby power, emergency power or uninterruptable power supplies 2 hours
For SI: 1 square foot = 0.0929 m2, 1 pound per square inch (psi) = 6.9 kPa, 1 British thermal unit (Btu) per hour = 0.293 watts, 1 horsepower = 746 watts, 1 gallon = 3.785 L.
1105.4.1 Occupancy Classification
Incidental uses shall not be individually classified in accordance with Section 302.1 of the International Building Code. Incidental uses shall be included in the building occupancies within which they are located.
1105.4.2 Area Limitations
Incidental uses shall not occupy more than 10 percent of the building area of the story in which they are located.
1105.4.3 Separation and Protection
The incidental uses listed in Table 1105.4 shall be separated from the remainder of the building or equipped with an automatic sprinkler system, or both, in accordance with the provisions of that table.
1105.4.3.1 Separation
Where Table 1105.4 specifies a fire-resistance-rated separation, the incidental uses shall be separated from the remainder of the building in accordance with Section 509.4.1 of the International Building Code.
1105.4.3.2 Protection
Where Table 1105.4 permits an automatic sprinkler system without a fire-resistance-rated separation, the incidental uses shall be separated from the remainder of the building by construction capable of resisting the passage of smoke in accordance with Section 509.4.2 of the International Building Code.
1105.4.3.2.1 Protection Limitation
Except as otherwise specified in Table 1105.4 for certain incidental uses, where an automatic sprinkler system is provided in accordance with Table 1105.4, only the space occupied by the incidental use need be equipped with such a system.
1105.5 Corridor Construction
In Group I-2, in areas housing patient sleeping or care rooms, corridor walls and the opening protectives therein shall provide a barrier designed to resist the passage of smoke in accordance with Sections 1105.5.1 through 1105.5.7.
1105.5.1 Materials
The walls shall be of materials permitted by the building type of construction.
1105.5.2 Fire-Resistance Rating
Unless required elsewhere in this code, corridor walls are not required to have a fire-resistance rating. Corridor walls that were installed as fire-resistance-rated assemblies in accordance with the applicable codes under which the building was constructed, remodeled or altered shall be maintained unless modified in accordance with the International Existing Building Code.
1105.5.3 Corridor Wall Continuity
Corridor walls shall extend from the top of the foundation or floor below to one of the following:
  1. The underside of the floor or roof sheathing, deck or slab above.
  2. The underside of a ceiling above where the ceiling membrane is constructed to limit the passage of smoke.
  3. The underside of a lay-in ceiling system where the ceiling system is constructed to limit the passage of smoke and where the ceiling tiles weigh not less than 1 pound per square foot (4.88 kg/m2) of tile.
1105.5.4 Openings in Corridor Walls
Openings in corridor walls shall provide protection in accordance with Sections 1105.5.4.1 through 1105.5.4.3.
1105.5.4.1 Windows
Windows in corridor walls shall be sealed to limit the passage of smoke, or the window shall be automatic-closing upon detection of smoke, or the window opening shall be protected by an automatic closing device that closes upon detection of smoke.
Exception: In smoke compartments not containing patient sleeping rooms, pass-through windows or similar openings shall be permitted in accordance with Section 1105.5.4.3.
1105.5.4.2 Doors
Doors in corridor walls shall comply with Sections 1105.5.4.2.1 through 1105.5.4.2.3.
1105.5.4.2.1 Louvers
Doors in corridor walls shall not include louvers, transfer grills or similar openings.
Exception: Doors shall be permitted to have louvers, transfer grills or similar openings at toilet rooms or bathrooms; storage rooms that do not contain storage of flammable or combustible material; and storage rooms that are not required to be separated as incidental uses.
1105.5.4.2.2 Corridor Doors
Doors in corridor walls shall limit the transfer of smoke by complying with the following:
  1. Doors shall be constructed of not less than 13/4 inch-thick (44 mm) solid bonded-core wood or capable of resisting fire not less than 1/3 hour.
    Exception: Corridor doors in buildings equipped throughout with an automatic sprinkler system.
  2. Frames for side-hinged swinging doors shall have stops on the sides and top to limit transfer of smoke.
  3. Where provided, vision panels in doors shall be a fixed glass window assembly installed to limit the passage of smoke. Existing wired glass panels with steel frames shall be permitted to remain in place.
  4. The clearance between the bottom of the door and floor shall not exceed 1 inch (25 mm).
  5. Doors shall be positive latching with devices that resist not less than 5 pounds (22.2 N). Roller latches are prohibited.
  6. Mail slots or similar openings shall be permitted in accordance with Section 1105.5.4.3.
1105.5.4.2.3 Dutch Doors
Where provided, Dutch doors shall comply with Section 1105.5.4.2.2. In addition, Dutch doors shall be equipped with latching devices on either the top or bottom leaf to allow leaves to latch together. The space between the leaves shall be protected with devices such as astragals to limit the passage of smoke.
1105.5.4.2.4 Self- or Automatic-Closing Doors
Where self- or automatic-closing doors are required, closers shall be maintained in operational condition. Hold-open devices on doors shall be capable of manual release.
1105.5.4.2.5 Protective Plates
Protective plates installed on corridor doors shall not be limited in size.
1105.5.4.3 Openings in Corridor Walls and Doors
In other than smoke compartments containing patient sleeping rooms, mail slots, pass-through windows or similar openings shall not be required to be protected where the aggregate area of the openings between the corridor and a room are not greater than 80 square inches (51 613 mm2) and are located with the top edge of any opening not higher than 48 inches above the floor.
1105.5.5 Penetrations
The space around penetrating items shall be filled with an approved material to limit the passage of smoke.
1105.5.6 Joints
Joints shall be filled with an approved material to limit the passage of smoke.
1105.5.7 Ducts and Air Transfer Openings
The space around a duct penetrating a smoke partition shall be filled with an approved material to limit the passage of smoke. Air transfer openings in smoke partitions shall be provided with a smoke damper complying with Section 717.3.2.2 of the International Building Code.
Exception: Where the installation of a smoke damper will interfere with the operation of a required smoke control system in accordance with Section 909, approved alternative protection shall be utilized.
1105.6 Means of Egress
In addition to the means of egress requirements in Section 1104, Group I-2 facilities shall meet the means of egress requirements in Sections 1105.6.1 through 1105.6.8.
1105.6.1 Two Means of Egress
A means of egress shall be provided from each smoke compartment created by smoke barriers without having to return through the smoke compartment from which the means of egress originated. Smoke compartments that do not contain an exit shall be provided with direct access to not less than two adjacent smoke compartments.
1105.6.2 Size of Door
Means of egress doors used for the movement of patients in beds shall provide a minimum clear width of 411/2 inches (1054 mm). The height of the door opening shall be not less than 80 inches (2032 mm).
Exceptions:
  1. Door closers and door stops shall be permitted to be 78 inches (1981 mm) minimum above the floor.
  2. In Group I-2, Condition 1, existing means of egress doors used for the movement of patients in beds that provide a minimum clear width of 32 inches (813 mm) shall be permitted to remain.
1105.6.3 Group I-2 Occupancies
In Group I-2, where a door serves as an opening protective in a fire barrier, smoke barrier or fire wall and where the door is equipped with a hold-open device, such door shall automatically close upon any of the following conditions:
  1. Actuation of smoke detectors initiating the hold-open device.
  2. Activation of the fire alarm system within the zone.
  3. Activation of an automatic sprinkler system within the zone.
1105.6.4 Ramps
In areas where ramps are used for movement of patients in beds, the clear width of the ramp shall be not less than 48 inches (1219 mm).
1105.6.5 Corridor Width
In areas where corridors are used for movement of patients in beds, the clear width of the corridor shall be not less than 48 inches (1219 mm).
1105.6.6 Dead-End Corridors
In smoke compartments containing patient sleeping rooms and treatment rooms, dead-end corridors shall not exceed 30 feet (9144 mm) unless approved by the fire code official.
1105.6.7 Separation of Exit Access Doors
Patient sleeping rooms, or any suite that includes patient sleeping rooms, of more than 1,000 square feet (92.9 m2) shall have not less than two exit access doors placed a distance apart equal to not less than one-third of the length of the maximum overall diagonal dimension of the patient sleeping room or suite to be served, measured in a straight line between exit access doors.
1105.6.8 Aisles
In areas where aisles are used for movement of patients in beds, the clear width of the aisle shall be not less than 48 inches (1219 mm).
1105.7 Smoke Compartments
Smoke compartments shall be provided in existing Group I-2, Condition 2, in accordance with Sections 1105.7.1 through 1105.7.6.
1105.7.1 Design
Smoke barriers shall be provided to subdivide each story used for patients sleeping with an occupant load of more than 30 patients into not fewer than two smoke compartments.
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