Existing Group I-2 shall meet all of the following requirements:
- The minimum fire safety requirements in Section 1103.
- The minimum mean of egress requirements in Section 1104.
- 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.
Group I-2 Condition 2 shall not be located on a floor level higher than the floor level limitation in Table 1105.2 based on the type of construction.
FLOOR LEVEL LIMITATIONS FOR GROUP I-2 CONDITION 2
|CONSTRUCTION TYPE||AUTOMATIC SPRINKLER SYSTEM||ALLOWABLE FLOOR LEVELa|
|1||2||3||4 or more|
P = Permitted; NP = Not permitted.
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 1105.3.1 through 1220.127.116.11.1. Incidental uses in Group I-2 occupancies are limited to those listed in Table 1105.3.
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.
Corridor walls shall extend from the top of the foundation or floor below to one of the following:
- The underside of the floor or roof sheathing, deck or slab above.
- The underside of a ceiling above where the ceiling membrane is constructed to limit the passage of smoke.
- 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.
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.
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.
Doors in corridor walls shall limit the transfer of smoke by complying with the following:
- Frames for side-hinged swinging doors shall have stops on the sides and top to limit transfer of smoke.
- 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.
- Door undercuts shall not exceed 1 inch (25 mm).
- Doors shall be positive latching with devices that resist not less than 5 pounds (22.2 N). Roller latches are prohibited.
- Mail slots or similar openings shall be permitted in accordance with Section 118.104.22.168.
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 722.214.171.124 of the California 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.
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).
Refuge areas shall be provided within each smoke compartment. The size of the refuge area shall accommodate the occupants and care recipients from the adjoining smoke compartment. Where a smoke compartment is adjoined by two or more smoke compartments, the minimum area of the refuge area shall accommodate the largest occupant load of the adjoining compartments.
The size of the refuge area shall provide the following:
- Not less than 30 net square feet (2.8 m2) for each care recipient confined to a bed or stretcher.
- Not less than 15 square feet (1.4 m2) for each resident in a Group I-2 using mobility assistance devices.
- Not less than 6 square feet (0.56 m2) for each occupant not addressed in Items 1 and 2.
Areas of spaces permitted to be included in the calculation of the refuge area are corridors, sleeping areas, treatment rooms, lounge or dining areas and other low-hazard areas.
Exception: Where existing duct and air transfer openings in smoke barriers exist without smoke dampers, they shall be permitted to remain. Any changes to existing smoke dampers shall be submitted for review and approved in accordance with Section 717 of the California Building Code.
Exception: Manual fire alarm boxes in patient sleeping areas shall not be required at exits if located at all nurses’ control stations or other constantly attended staff locations, provided such stations are visible and continuously accessible and that travel distances required in Section 907.5.2.1 are not exceeded.