Section 408.30429. High-rise buildings.

 Sections 403.1, 403.5.4, 907.2.1.3, and 907.6.3.2 of the code are amended to read as follows:

403.1. Applicability. The provisions of this section shall apply to buildings having the occupied floors located more than 55 feet (16 764 mm) above the lowest level of fire department vehicle access.

Exception:  The provisions of this section shall not apply to the following buildings and structures:

1.    Airport traffic control towers in accordance with section 412 of the code.

2.    Open parking garages in accordance with section 406.3 of the code.

3.      Buildings with an occupancy in group A-5 in accordance with section 303.1 of the code.

4.     Low-hazard special industrial occupancies in accordance with section 503.1.1 of the code.

5.       Buildings with an occupancy in group H-1, H-2, or H-3 in accordance with section 415 of the code.

6.      Existing buildings having occupied floor levels not more than 75 feet (22 860 mm) above the lowest level of fire department vehicle access where the local unit of government complies with both of the following:

6.1.       The local unit of government has a municipal fire department with an ISO rating of 3 or lower, employing a full-time career firefighting staff.

6.2.      The governing body of the local unit of government has passed a resolution affirming the use of this exception and filed that resolution with the department of energy, labor, and economic growth, bureau of construction codes.

403.5.4. Smokeproof exit enclosures. Every required stairway serving floors more than 55 feet (16 764 mm) above the lowest level of fire department vehicle access shall comply with sections 909.20 and 1022.9 of the code.

907.2.13. High-rise buildings. Buildings having floors used for human occupancy located more than 55 feet (16 764 mm) above the lowest level of fire department vehicle access shall be provided with an automatic fire alarm system and an emergency responder radio coverage system in accordance with section 907.2.13.2 of the code.

Exceptions:

1.    Airport traffic control towers in accordance with sections 412 and 907.2.22 of the code.

2.    Open parking garages in accordance with section 406.3 of the code.

3.    Buildings with an occupancy in group A-5.

4.    Low-hazard special occupancies in accordance with section 503.1.1 of the code.

5.       Buildings with an occupancy in group H-1, H-2, or H-3 in accordance with section 415 of the code.

6.     In group I-1 and I-2 occupancies, the alarm shall sound at a constantly attended location and general occupant notification shall be broadcast by the emergency voice or alarm communication system.

907.6.3.2. High-rise buildings. In buildings used for human occupancy that have floors located more than 55 feet (16 764 mm) above the lowest level of fire department vehicle access, a separate zone by floor shall be provided for all of the following types of alarm-initiating devices where provided:

1.    Smoke detectors.

2.    Sprinkler water-flow devices.

3.    Manual fire alarm boxes.

4.    Other approved types of automatic fire detection devices or suppression systems.

History: 1979 AC; 1981 AACS; 1985 AACS; 1988 AACS; 1992 AACS; 1995 AACS; 2001 AACS;