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In towers protected throughout by an automatic sprinkler system in accordance with Section 9.7, the levels located below the observation level shall be permitted to be occupied only for the following:
Spaces not subject to human occupancy because of machinery or equipment shall be excluded from consideration.
Towers shall be permitted to have a single exit, provided that the following conditions are met:
- The tower shall be subject to occupancy by fewer than 25 persons.
- The tower shall not be used for living or sleeping purposes.
- The tower shall be of Type I, Type II, or Type IV construction. (See 8.2.1.)
- The tower interior wall and ceiling finish shall be Class A or Class B.
- No combustible materials shall be located within the tower, under the tower, or within the immediate vicinity of the tower, except necessary furniture.
- No high hazard occupancies shall be located within the tower or within its immediate vicinity.
- Where the tower is located above a building, the single exit from the tower shall be provided by one of the following:
- Exit enclosure separated from the building with no door openings to or from the building
- Exit enclosure leading directly to an exit enclosure serving the building, with walls and door separating the exit enclosures from each other, and another door allowing access to the top floor of the building that provides access to a second exit serving that floor
Towers with 360-degree line-of-sight requirements shall be permitted to have a single means of egress for a distance of travel to the exit not exceeding 75 ft (23 m), or 100 ft (30 m) if the tower is protected throughout by an approved, supervised automatic sprinkler system in accordance with Section 9.7.
Locations not routinely inhabited by humans shall be exempt from emergency lighting requirements.
Locations not routinely inhabited by humans shall be exempt from marking of means of egress requirements.
The levels located below the observation level shall be permitted to be occupied only for the following:
Airport traffic control towers shall be permitted to have a single exit, provided that all the following conditions are met in addition to the requirements of 188.8.131.52:
- Each level of new airport traffic control towers, served by a single exit, shall be subject to a calculated occupant load of 15 or fewer persons.
- The requirements of 184.108.40.206.1(1) shall not apply to existing airport traffic control towers.
- A fire alarm system shall be provided in accordance with Section 9.6. Smoke detection shall be provided throughout airport traffic control towers to meet the requirements of partial coverage, as defined in 220.127.116.11 of NFPA 72, and shall include coverage of all of the following:
- Observation level
- Means of egress
- All equipment rooms
- Incidental accessory uses
- Accessible utility shafts
- The requirements of 18.104.22.168.1(5) shall not apply.
- Rooms or spaces used for the storage, processing, or use of combustible supplies shall be permitted in quantities deemed acceptable by the authority having jurisdiction.
- Smokeproof exit enclosures shall be provided in accordance with 7.2.3.
Where an airport traffic control tower is equipped throughout with an approved, supervised automatic sprinkler system in accordance with Section 9.7, the minimum separation distance between two exits, or exit accesses, measured in accordance with 22.214.171.124.2 shall be not less than one-fourth of the length of the maximum overall diagonal dimension of the building or area to be served.
Existing single-exit airport traffic control towers shall be permitted to have discharge of the exit comply with one of the following:
- Discharge of the exit in an approved, existing single-exit airport traffic control tower is permitted to a vestibule or foyer complying with the requirements of 7.7.2(4)(b).
- *Discharge of the exit in a single-exit airport traffic control tower is permitted within the building to a location where two means of egress are available and are arranged to allow travel in independent directions after leaving the exit enclosure, so that both means of egress do not become compromised by the same fire or similar emergency.
Smoke detection shall be provided throughout the airport traffic control tower to meet the requirements for partial coverage, as defined in 126.96.36.199 of NFPA 72, and shall include coverage of all of the following:
Class I standpipes shall be manual standpipes as defined in NFPA 14 where permitted by the authority having jurisdiction.
The emergency command center shall be permitted to be located in the airport traffic control tower or an adjacent contiguous building where building functions are interdependent.
The emergency command center shall contain the following:
- Fire department two-way telephone communication service panels and controls
- Fire detection and fire alarm system control unit and annunciator
- Elevator floor location and operation annunciators
- Elevator fire recall switch in accordance with ASME A17.1/CSA B44, Safety Code for Elevators and Escalators
- Controls and annunciators for systems supporting smokeproof enclosures
- Sprinkler valve and waterflow annunciators
- Emergency generator status indicators
- Schematic building plans indicating a typical floor plan and detailing the building core, means of egress, fire protection systems, fire-fighting equipment, and fire department access as well as the locations of fire walls, fire barriers, fire partitions, smoke barriers, and smoke partitions
- Fire pump status indicators
- Telephone for fire department use with controlled access to the public telephone system
- An approved building information card that contains, but is not limited to, the following information:
- General building information that includes property name, address, the number of floors in the building (above and below grade), use and occupancy classification (for mixed uses, identify the different types of occupancies on each floor), and estimated building population (day, night, weekend)
- Building emergency contact information that includes a list of the building's emergency contacts (e.g., building manager, building engineer, etc.) and their respective work phone numbers, cell phone numbers, and email addresses
- Building construction information that includes the type of building construction (e.g., floors, walls, columns, and roof assembly)
- Exit stair information that includes number of exit stairs in the building, each exit stair designation and floors served, location where each exit stair discharges, exit stairs that are pressurized, exit stairs provided with emergency lighting, each exit stair that allows reentry, and exit stairs providing roof access
- Elevator information that includes the number of elevator banks, elevator bank designation, elevator car numbers and respective floors that they serve, location of elevator machine rooms, location of sky lobby, and location of freight elevator banks
- Building services and system information that includes the location of mechanical rooms, location of building management system, location and capacity of all fuel oil tanks, location of emergency generator, and location of natural gas service
- Fire protection system information that includes locations of standpipes, location of fire pump room, location of fire department connections, floors protected by automatic sprinklers, and location of different types of sprinkler systems installed (e.g., dry, wet, preaction)
- Hazardous material information that includes location of hazardous material and quantity of hazardous material
Fire drills shall be conducted such that all employees participate at least once annually in accordance with Section 4.7.
Employees of airport traffic control towers shall be instructed at least annually in the emergency action plan.
The emergency action plan shall be updated at least annually.
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