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Title: Section 308  •  Size: 16002

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SECTION 308 - REQUIREMENTS FOR GROUP I OCCUPANCIES

308.1 Group I Occupancies Defined. Group I Occupancies shall be:

Division 1.1. Nurseries for the full-time care of children under the age of six (each accommodating more than five children).

Hospitals, sanitariums, nursing homes with nonambulatory patients and similar buildings (each accommodating more than five patients).

Division 1.2. Health-care centers for ambulatory patients receiving outpatient medical care which may render the patient incapable of unassisted self-preservation (each tenant space accommodating more than five such patients).

Division 2. Nursing homes for ambulatory patients, homes for children six years of age or over (each accommodating more than five patients or children).

Division 3. Mental hospitals, mental sanitariums, jails, prisons, reformatories and buildings where personal liberties of inmates are similarly restrained.

For occupancy separations, see Table 3-B.

EXCEPTION: Group I Occupancies shall not include buildings used only for private residential purposes for a family group.

308.2 Construction, Height and Allowable Area.

308.2.1 General. Buildings or parts of buildings classed in Group I because of the use or character of the occupancy shall be limited to the types of construction set forth in Table 5-B and shall not exceed, in area or height, the limits specified in Sections 504, 505 and 506.

EXCEPTIONS: 1. Hospitals and nursing homes classified as Group I, Division 1.1 Occupancies, and health-care centers for ambulatory patients classified as Group I, Division 1.2 Occupancies that are equipped with an automatic sprinkler system throughout shall not exceed one story in height when in Type III One-hour, Type IV or Type V One-hour construction.

2. Hospitals and nursing homes classified as Group I, Division 1.1 Occupancies, and health-care centers for ambulatory patients classified as Group I, Division 1.2 Occupancies that are equipped with automatic sprinkler systems throughout may be five stories when of Type II-F.R. construction and three stories when of Type II One-hour construction. The allowable area increase specified in Section 505.3 applies only when the number of stories in the building is one less than set forth above.

3. Hospitals and nursing homes classified as Group I, Division 1.1 Occupancies, and health-care centers for ambulatory patients classified as Group I, Division 1.2 Occupancies that are equipped with automatic sprinkler systems throughout may be housed within one-story buildings of Type II-N construction. The area of such building shall not exceed 13,500 square feet (1254 m²) plus the allowable area increase for separation by public space or yards as set forth in Section 505.1.

308.2.2 Specific-use provisions.

308.2.2.1 Group I, Division 1.1 smoke barriers. Floor levels of Group I, Division 1.1 Occupancies used by inpatients for sleeping or treatment, or having an occupant load of 50 or more, shall be divided into at least two compartments by smoke barriers of not less than one-hour fire resistance meeting the requirements of Section 905.2.3. The area within a smoke-control zone shall not exceed 22,500 square feet (2090 m²) and its width or length shall not exceed 150 feet (45 720 mm). The area of a smoke zone shall not be less than that required to accommodate the occupants of the zone plus the occupants from any adjoining zone. Not less than 30 square feet (2.8 m²) net clear floor area for bed and litter patients and 6 square feet (0.6 m²) net clear floor area for other occupants shall be used to compute the required areas.

Doors in smoke barriers shall be tight-fitting smoke- and draft-control assemblies having a fire-protection rating of not less than 20 minutes and shall comply with Section 1019.2. When doors are installed across corridors, a pair of opposite-swinging doors without a center mullion or horizontal sliding doors that comply with U.B.C. Standard 7-8, which is part of this code (see Chapter 35, Part II), shall be installed. Smoke barrier doors shall:

1. When installed across corridors, have vision panels. The area of the vision panels shall not exceed that tested.

2. Be close fitting with only the clearance necessary for proper operation and shall be without undercuts, louvers or grilles.

3. Have stops at the head and jambs. Opposite-swinging corridor doors shall have rabbets or astragals at the meeting edges.

4. Have positive latching devices, except on doors installed across corridors.

5. Be self-closing or automatic closing. An approved sign shall be adjacent to self-closing doors specifying that they are to be maintained in a closed position. Doors installed across corridors shall comply with Section 713.6.1, Item 3, and doors on the floor or in the affected zone shall automatically close if the fire alarm or sprinkler system is activated.

At least two exits shall be provided from each smoke zone. Exits may pass through adjacent zones, provided at least one exit does not return through the compartment zone from which exiting originated. Exit doors at zone boundaries shall be equipped with approved vision panels.

308.2.2.2 Group I, Division 3 Occupancies. Group I, Division 3 Occupancies shall be housed in buildings of Type I or Type II-F.R. construction.

EXCEPTION: Such occupancies may be housed in one-story buildings of Type II One-hour, Type III One-hour or Type V One-hour construction provided the floor area does not exceed 3,900 square feet (362 m²) between separation walls of two-hour fire-resistive construction with openings protected by fire assemblies having one- and one-half-hour fire-protection rating.

Rooms occupied by inmates or patients whose personal liberties are restrained shall have noncombustible floor surfaces.

308.3 Location on Property. For fire-resistive protection of exterior walls and openings, as determined by location on property, see Section 503 and Chapter 6.

308.4 Access and Exit Facilities. Exits shall be provided as specified in Chapter 10. (For special provisions, see Section 1019.)

Access to, and egress from, buildings required to be accessible shall be provided as specified in Chapter 11.

308.5 Light, Ventilation and Sanitation.

308.5.1 Light and ventilation. All portions of enclosed Group I Occupancies customarily occupied by human beings shall be provided with light and ventilation, either natural or artificial, as specified in Section 1202. See Section 1012 for required exit illumination.

308.5.2 Sanitation. The number of plumbing fixtures shall not be less than specified in Section 2902.5.

308.6 Shaft and Exit Enclosures. Exits shall be enclosed as specified in Chapter 10.

Elevator shafts, vent shafts and other vertical openings shall be enclosed, and the enclosure shall be as specified in Section 711.

308.7 Sprinkler and Standpipe Systems. When required by Section 904.2.1 or other provisions of this code, automatic sprinkler systems and standpipes shall be designed and installed as specified in Chapter 9.

308.8 Special Hazards. Chimneys and heating apparatus shall conform to the requirements of Chapter 31 of this code and the Mechanical Code.

Motion picture projection rooms shall conform to the requirements of Section 406.

Specific use areas shall be separated from Group I, Division 1.1 Occupancies used for hospitals or nursing homes in accordance with Table 3-C. Doors shall be maintained self-closing or shall be automatic closing by actuation of a smoke detector.

Storage and handling of flammable and combustible liquids shall be in accordance with the Fire Code.

All exterior openings in a boiler room or room containing central heating equipment if located below openings in another story, or if less than 10 feet (3048 mm) from the other doors or windows of the same building, shall be protected by a fire assembly having a three-fourths-hour fire-protection rating.

308.9 Fire Alarm Systems. An approved manual and automatic fire alarm system shall be provided for Group I Occupancies. Audible alarm devices shall be used in nonpatient areas. Visible alarm devices may be used in lieu of audible devices in patient-occupied areas. For installation requirements, see the Fire Code.

308.10 Smoke Detectors. Smoke detectors which receive their primary power from the building wiring shall be installed in patient sleeping rooms of hospital and nursing homes. Actuation of such detectors shall cause a visual display on the corridor side of the room in which the detector is located and shall cause an audible and visual alarm at the respective nurses' station. When single-station detectors and related devices are combined with a nursing call system, the nursing call system shall be listed for the intended combined use.

EXCEPTION: In rooms equipped with automatic door closers having integral smoke detectors on the room side, the integral detector may substitute for the room smoke detector, provided it performs the required alerting functions.

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