|
ELEVATORS AND CONVEYING SYSTEMS
<br />3005.2 Escalators and moving walks. Escalators and mov-
<br />ing walks shall be constructed of approved noncombustible
<br />and fire-retardant materials. This requirement shall not apply
<br />to electrical equipment, wiring, wheels, handrails and the use
<br />of 1/28-inch (0.9 mm) wood veneers on balustrades backed up
<br />with noncombustible materials.
<br />3005.2.1 Enclosure. Escalator floor openings shall be
<br />enclosed with shaft enclosures complying with Section
<br />713.
<br />3006.4 Machine rooms and machinery spaces. Elevator
<br />machine rooms and machinery spaces shall be enclosed with
<br />fire barriers constructed in accordance with Section 707 or
<br />horizontal assemblies constructed in accordance with Section
<br />711, or both. The fire-resistance rating shall be not less than
<br />the required rating of the hoistway enclosure served by the
<br />machinery. Openings in the fire barriers shall be protected
<br />with assemblies having a fire protection rating not less than
<br />that required for the hoistway enclosure doors.
<br />3005.2.2 Escalators. Where provided in below-grade
<br />transportation stations, escalators shall have a clear width
<br />of not less than 32 inches (815 mm).
<br />Exception: The clear width is not required in existing
<br />facilities undergoing alterations.
<br />3005.3 Conveyors. Conveyors and conveying systems shall
<br />comply with ASME B20.1.
<br />3005.3.1 Enclosure. Conveyors and related equipment
<br />connecting successive floors or levels shall be enclosed
<br />with shaft enclosures complying with Section 713.
<br />3005.3.2 Conveyor safeties. Power-operated conveyors,
<br />belts and other material-moving devices shall be equipped
<br />with automatic limit switches which will shut off the
<br />power in an emergency and automatically stop all opera-
<br />tion of the device.
<br />3005.4 Personnel and material hoists. Personnel and mate-
<br />Mal hoists shall be designed utilizing an approved method that
<br />accounts for the conditions imposed during the intended
<br />operation of the hoist device. The design shall include, but is
<br />not limited to, anticipated loads, structural stability, impact,
<br />vibration, stresses and seismic restraint. The design shall
<br />account for the construction, installation, operation and
<br />inspection of the hoist tower, car, machinery and control
<br />equipment, guide members and hoisting mechanism. Addi-
<br />tionally, the design of personnel hoists shall include provi-
<br />sions for field testing and maintenance which will
<br />demonstrate that the hoist device functions in accordance
<br />with the design. Field tests shall be conducted upon the corn-
<br />pletion of an installation or following a major alteration of a
<br />personnel hoist.
<br />SECTION 3006
<br />MACHINE ROOMS
<br />3006.1 Access. An approved means of access shall be pro-
<br />vided to elevator machine rooms and overhead machinery
<br />spaces.
<br />3006.2 Venting. Elevator machine rooms that contain solid-
<br />state equipment for elevator operation shall be provided with
<br />an independent ventilation or air-conditioning system to pro-
<br />tect against the overheating of the electrical equipment. The
<br />system shall be capable of maintaining temperatures within
<br />the range established for the elevator equipment.
<br />3006.3 Pressurization. The elevator machine room serving a
<br />pressurized elevator hoistway shall be pressurized upon acti-
<br />vation of a heat or smoke detector located in the elevator
<br />machine room.
<br />Exceptions:
<br />1. Where machine rooms and machinery spaces do not
<br />abut and have no openings to the hoistway enclosure
<br />they serve the fire barriers constructed in accordance
<br />with Section 707 or horizontal assemblies con-
<br />structed in accordance with Section 711, or both,
<br />shall be permitted to be reduced to a 1-hour fire-
<br />resistance rating.
<br />2. In buildings four stories or less above grade plane
<br />where machine room and machinery spaces do not
<br />abut and have no openings to the hoistway enclosure
<br />they serve, the machine room and machinery spaces
<br />are not required to be fire-resistance rated.
<br />3006.4.1 Automatic sprinkler system. Automatic sprin-
<br />klers shall not be required to be installed in the elevator
<br />hoistway, elevator machine room, elevator machinery
<br />space, elevator control space, or elevator control room
<br />where all the following are met:
<br />1. Approved smoke detectors shall be installed in the
<br />elevator hoistway, elevator machine room, elevator
<br />machinery spaces, elevator control spaces, or eleva-
<br />tor control rooms and connected to the building fire
<br />alarm system in accordance with Section 907.
<br />2. Activation of any smoke detector located in the ele-
<br />vator hoistway, elevator machine room, elevator
<br />machinery space, elevator control space, or elevator
<br />control room shall cause the actuation of the build-
<br />ing fire alarm notijication appliances in accordance
<br />with Section 907.
<br />3. Activation of any smoke detector located in the ele-
<br />vator hoistway, elevator machine room, elevator
<br />machinery space, elevator control space, or elevator
<br />control room shall cause all elevators having any
<br />equipment located in that elevator hoistway, eleva-
<br />tor machine room, elevator machinery space, eleva-
<br />tor control space, or elevator control room to recall
<br />nonstop to the appropriate designated floor in
<br />accordance with CCR Title 8, Division 1, Chapter 4,
<br />Subchapter 6, Elevator Safety Orders.
<br />4. The elevator machine room, elevator machinery
<br />space, elevator control space, or elevator control
<br />room shall be enclosed with fire barriers con-
<br />structed in accordance with Section 707 or horizon-
<br />tal assemblies constructed in accordance with
<br />Section 712, or both. The fire-resistance rating shall
<br />not be less than the required rating of the hoistway
<br />enclosure served by the machinery. Openings in the
<br />fire barriers shall be protected with assemblies hav-
<br />416 2013 CALIFORNIA BUILDING CODE
|