The occupancy is not in Group R-1, R-2, I-1, or I-2, as defined in chapter 1305, or of a similar occupancy with overnight sleeping quarters.Ģ. Where mechanical ventilation conforming to the International Mechanical Code is provided, a reduction in the required vent area is allowed, provided that all of the following conditions are met:ġ. Except as provided for in section 3004.3.1, the area of the vents shall not be less than 3-1/2 percent of the area of the hoistway nor less than 3 square feet (0.28 m 2) for each elevator car and not less than 3-1/2 percent nor less than 0.5 square foot (0.047 m 2) for each dumbwaiter car in the hoistway, whichever is greater.ģ004.3.1 Reduced vent area. The keyed manual remote control device may not be co-located with any operating devices for the elevators.ģ004.3 Area of vents. The designated floor shall be approved by the authority having jurisdiction.ĭ. ![]() The keyed manual remote control device shall be located adjacent to the fire control panel, if provided, or in the elevator lobby of a designated floor. The key shall be removable only in the closed position.Ĭ. The markings for both positions shall be permanent. The keyed manual remote control device shall have two positions: vent closed and vent open. The indicator device shall be activated by a device having a direct mechanical connection to vent shutters.ī. Vents shall be operated by a keyed manual remote device and equipped with a remote visual LED-type indicator device for indicating the full open position.Ī. Interconnection of separate hoistways for the purpose of venting is prohibited.ģ. The protective grilles shall be securely mounted to the building structure.Ģ. Protective grilles shall be installed at vent openings in the top of the hoistway to prevent people from falling into the hoistway. Holes in the machine room floors for the passage of ropes, cables, or other moving elevator equipment shall be limited so as not to provide greater than 2 inches (51 mm) of clearance on all sides.ġ. Noncombustible ducts shall be permitted to pass through the elevator machine room provided the portions of the ducts located outside the hoistway or machine room are enclosed by construction having not less than the fire protection rating required for the hoistway. Vents shall be located directly (directly is defined as being as close as technically possible to the top of the hoistway including the supporting structures located at the top of the hoistway) below the top of the hoistway and shall be open either directly to the outer air or through noncombustible ducts to the outer air. Where standby power is connected to elevators, machine room ventilation or air conditioning, if provided, shall be connected to the standby power source.ģ004.2 Location of vents. Where the standby power source is not of sufficient capacity to operate all elevators at the same time, the elevators shall operate according to ASME A17.1/CSA B44-2010 2.27.2.ģ003.1.4 Venting. Where two or more elevators are controlled by a common operating system, all elevators shall automatically transfer to standby power within 60 seconds after failure of normal power where the standby power source is of sufficient capacity to operate all elevators at the same time. ![]() ![]() Where only one elevator is installed, the elevator shall automatically transfer to standby power within 60 seconds after failure of normal power.ģ003.1.3 Two or more elevators. Standby power shall be manually transferable to all elevators in each bank.ģ003.1.2 One elevator. In buildings and structures where standby power is required or furnished to operate an elevator, the operation shall be in accordance with sections 3003.1.1 to 3003.1.4.ģ003.1.1 Manual transfer. The symbol shall not be less than three inches (76 mm) high and shall be placed inside on both sides of the hoistway door frame.Įxception: When approved by the authority having jurisdiction, passenger elevators to be installed in existing buildings where existing hoistway configuration or technical infeasibility prohibits strict compliance with the minimum inside car size, the minimum inside car area may be reduced to not less than 48 inches by 48 inches.ģ003.1 Standby power. The elevator car shall be of such a size and arrangement to accommodate an ambulance stretcher 24-inches by 84-inches (610 mm by 2133.5 mm) with not less than 5-inch (127 mm) radius corners in the horizontal, open position and shall be identified by the international symbol for emergency medical services (star of life). ![]() Where elevators are provided in buildings four or more stories above grade plane or four or more stories below grade plane, at least one elevator shall be provided for fire department emergency access to all floors. 3002.4 Elevator car to accommodate ambulance stretcher.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |