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SEC. 57.4705.1. ELEVATOR SYSTEM.
 
   Elevator systems shall comply with the general requirements of Sections 57.4705.1.1 through 57.4705.1.8.
 
 
SEC. 57.4705.1.1. CONSTRUCTION.
 
   Except for the designated main floor, all elevators shall open into elevator vestibules which are constructed with walls, floors, and ceilings having a fire-resistive rating of not less than one hour.
 
 
SEC. 57.4705.1.2. VESTIBULE OPENINGS.
 
   All vestibule openings other than those for elevator doors and stairway enclosures shall be protected with automatic-closing fire assemblies having not less than a 45-minute fire-resistive rating, actuated by “combustion products” type smoke detectors.
 
 
SEC. 57.4705.1.3. SMOKE DETECTOR.
 
   Each elevator vestibule shall be provided with an approved smoke detector located on the lobby ceiling. The elevator controls shall be designed so that the activation of a lobby smoke detector will cause all elevators serving that landing or floor to return non-stop to the designated main floor and be under manual control only.
 
 
SEC. 57.4705.1.3.1. ALTERNATE FLOOR RECALL.
 
   Elevators with an alternate floor recall feature shall also have an approved smoke detector in the designated main floor elevator lobby. Activation of this smoke detector would recall the elevator to an alternate floor designated by the Chief.
 
 
SEC. 57.4705.1.4. ELEVATOR KEYS.
 
   There shall be provided for Fire Department use in case of any emergency, a key for the main floor switch and for each fire control elevator and emergency elevator. These keys shall be readily accessible and in a location approved by the Chief.
 
 
SEC. 57.4705.1.5. SIGN.
 
   A permanent sign shall be installed adjacent to the elevator call station on each floor reading “IN CASE OF FIRE USE STAIRWAY FOR EXIT. DO NOT USE ELEVATOR.”
 
 
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