ASME A17.3 2023

$75.42

ASME A17.3-2023 Safety Code for Existing Elevators and Escalators

Published By	Publication Date	Number of Pages
ASME	2023

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Category: ASME

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Description

This Code is intended to serve as the basis for state and local jurisdictional authorities in adopting retroactive requirements for existing elevators and escalators to enhance the safety of the general public. It is also intended as a standard reference of safety requirements for the guidance of architects, engineers, insurance companies, manufacturers, and contractors, and as a standard of safety practices for building owners and managers of structures where existing elevator equipment covered in the scope of the Code is used.

PDF Catalog

PDF Pages	PDF Title
4	CONTENTS
7	FOREWORD
9	ASME A17 COMMITTEE ROSTER
15	CORRESPONDENCE WITH THE A17 COMMITTEE
16	PREFACE
19	ASME A17.3-2023 SUMMARY OF CHANGES
22	Part I Introduction SECTION 1.1 SCOPE 1.1.1 Equipment Covered by This Code 1.1.2 Equipment Not Covered by This Code SECTION 1.2 APPLICATION OF CODE
23	SECTION 1.3 PURPOSE AND EXCEPTIONS 1.3.1 Purpose 1.3.2 Exceptions
40	Tables Table 1.6-1 Reference Documents Table 1.6-2 Procurement Information
41	Part II Hoistways and Related Construction for Electric Elevators SCOPE SECTION 2.1 HOISTWAYS 2.1.1 Hoistway Construction 2.1.2 Windows in Hoistway Enclosures 2.1.3 Projections in Hoistway 2.1.4 Pipes, Air Ducts, and Wiring
42	2.1.5 Counterweight Guards SECTION 2.2 MACHINE ROOMS AND MACHINERY SPACES 2.2.1 Enclosures 2.2.2 Access to Machine Rooms and Machinery Spaces
43	2.2.3 Lighting 2.2.4 Ventilation 2.2.5 Pipes, Air Ducts, and Wiring 2.2.6 Protection From Weather SECTION 2.3 PITS 2.3.1 Access to Pits
44	2.3.2 Drains 2.3.3 Stop Switch SECTION 2.4 CLEARANCES AND RUNBYS 2.4.1 Horizontal Car Clearances 2.4.2 Bottom Car Clearances 2.4.3 Bottom Car and Counterweight Runby 2.4.4 Top Car Clearance 2.4.5 Landing Sill Clearance SECTION 2.5 PROTECTION OF SPACES BELOW HOISTWAYS 2.5.1 General Requirements
45	SECTION 2.6 HOISTWAY ENTRANCES 2.6.1 Doors or Gates Required 2.6.2 Closing of Hoistway Doors 2.6.3 Hoistway-Door Vision Panels
46	2.6.4 Door Hangers 2.6.5 Nonshearing Astragals 2.6.6 Pull Straps 2.6.7 Bottom Guides 2.6.8 Bottom Safety Retainers
47	SECTION 2.7 HOISTWAY-DOOR LOCKING DEVICES, PARKING DEVICES, AND ACCESS 2.7.1 Hoistway-Door or Hoistway-Gate Locking Devices 2.7.2 Closed Position of Hoistway Doors
48	2.7.3 Elevator Parking Device 2.7.4 Access to Hoistway
49	2.7.5 Restricted Opening of Hoistway Doors and/or Car Doors on Passenger Elevators 2.7.6 Hoistway Emergency Door Contacts SECTION 2.8 POWER OPERATION OF DOORS AND GATES 2.8.1 Kinetic Energy and Force Limitations for Power-Operated Horizontally Sliding Doors 2.8.2 Reopening Device for Power-Operated Car Doors or Gates
50	Part III Machinery and Equipment for Electric Elevators SCOPE SECTION 3.1 BUFFERS AND BUMPERS 3.1.1 General Requirements SECTION 3.2 COUNTERWEIGHTS 3.2.1 Rod Nuts, Tie Rods, and Weights SECTION 3.3 CAR FRAMES AND PLATFORMS 3.3.1 Car Platforms 3.3.2 Platform Guards (Aprons) 3.3.3 Hinged Platform Sills
51	3.3.4 Floating (Movable) Platforms 3.3.5 Protection of Platforms Against Fire SECTION 3.4 CAR ENCLOSURES 3.4.1 Car Enclosures 3.4.2 Car Doors and Gates 3.4.3 Location of Car Doors and Gates in Relation to Hoistway Door
52	3.4.4 Emergency Exits
53	3.4.5 Car Illumination 3.4.6 Protection of Light Bulbs and Tubes SECTION 3.5 SAFETIES 3.5.1 Car Safeties 3.5.2 Counterweight Safeties 3.5.3 Safeties to Stop Ascending Cars or Counterweights Prohibited 3.5.4 Application and Release of Safeties
54	3.5.5 Maximum Permissible Movement of Governor Rope to Operate the Safety Mechanism 3.5.6 Rail Lubricants and Lubrication Plate 3.5.7 Overall Length of Guide Rails SECTION 3.6 SPEED GOVERNORS 3.6.1 Speed Governor Overspeed and Car Safety Mechanism Switches 3.6.2 Governor Ropes SECTION 3.7 CAPACITY AND LOADING 3.7.1 Minimum Rated Load for Passenger Elevators 3.7.2 Use of Partitions for Reducing Inside Net Platform Area
55	3.7.3 Minimum Rated Load for Freight Elevators Figure 3.7.1-1 Inside Net Platform Areas for Passenger Elevators Table 3.7.1-1 Maximum Inside Net Platform Areas for the Various Rated Loads
56	3.7.4 Capacity Plates 3.7.5 Signs on Freight Elevators SECTION 3.8 DRIVING MACHINES AND SHEAVES 3.8.1 General Requirements 3.8.2 Winding Drum Machines
57	3.8.3 Indirect-Drive Machines 3.8.4 Brakes 3.8.5 Emergency Brake
58	3.8.6 Emergency Brake Supports, Allowed Stresses, and Factors of Safety SECTION 3.9 TERMINAL STOPPING DEVICES 3.9.1 Normal Terminal Stopping Devices
59	3.9.2 Final Terminal Stopping Devices SECTION 3.10 OPERATING DEVICES AND CONTROL EQUIPMENT 3.10.1 Types of Operating Devices 3.10.2 Car-Switch Operation Elevators 3.10.3 Top-of-Car Operating Devices 3.10.4 Electrical Protective Devices
60	3.10.5 Power Supply Line Disconnecting Means 3.10.6 Phase Reversal and Failure Protection
61	3.10.7 Operating of the Driving Machine With a Hoistway Door Unlocked or a Hoistway Door or a Car Door Not in the Closed Position 3.10.8 Release and Application of Driving Machine Brakes 3.10.9 Control and Operating Circuit Requirements 3.10.10 Absorption of Regenerated Power 3.10.11 Reserved for Future Use 3.10.12 System to Monitor and Prevent Automatic Operation of the Elevator With Faulty Door Contact Circuits 3.10.13 Ascending Car Overspeed Protection Device 3.10.14 Unintended Car Movement Device
62	SECTION 3.11 EMERGENCY OPERATION AND SIGNALING DEVICES 3.11.1 Car Emergency Signaling Devices 3.11.2 Operations of Elevators Under Standby (Emergency) Power 3.11.3 Firefighters’ Service SECTION 3.12 SUSPENSION MEANS AND THEIR CONNECTIONS 3.12.1 Suspension Means 3.12.2 Rope Data Tag 3.12.3 Factor of Safety
63	3.12.4 Minimum Number and Diameter of Suspension Ropes 3.12.5 Suspension Rope Equalizers 3.12.6 Securing of Suspension Wire Ropes to Winding Drums 3.12.7 Spare Rope Turns on Winding Drums Table 3.12.3-1 Minimum Factors of Safety for Suspension Wire Ropes
64	3.12.8 Suspension Rope Fastenings 3.12.9 Auxiliary Rope Fastening Devices SECTION 3.13 ASCENDING CAR OVERSPEED AND UNINTENDED CAR MOVEMENT PROTECTION 3.13.1 Ascending Car Overspeed Protection 3.13.2 Unintended Car Movement Protection
66	Part IV Hydraulic Elevators SCOPE SECTION 4.1 HOISTWAY, HOISTWAY ENCLOSURES, AND RELATED CONSTRUCTION SECTION 4.2 MECHANICAL EQUIPMENT 4.2.1 Buffers and Bumpers 4.2.2 Car Frames and Platforms 4.2.3 Car Enclosures 4.2.4 Capacity and Loading SECTION 4.3 DRIVING MACHINES 4.3.1 Connection to Driving Machine 4.3.2 Plunger Stops 4.3.3 Hydraulic Elevators
67	SECTION 4.4 VALVES, SUPPLY PIPING, AND FITTINGS 4.4.1 Pump Relief Valve 4.4.2 Check Valve 4.4.3 Mechanically Controlled Operating Valves 4.4.4 Supply Piping and Fittings SECTION 4.5 TANKS 4.5.1 General Requirements 4.5.2 Pressure Tanks SECTION 4.6 TERMINAL STOPPING DEVICES
68	SECTION 4.7 OPERATING DEVICES AND CONTROL EQUIPMENT 4.7.1 Operating Devices 4.7.2 Top-of-Car Operating Devices 4.7.3 Anticreep Leveling Devices 4.7.4 Electrical Protective Devices 4.7.5 Power Supply Line Disconnecting Means 4.7.6 Devices for Making Hoistway-Door Interlocks or Electric Contacts, or Car Door or Gate Electric Contacts Inoperative 4.7.7 Control and Operating Circuit Requirements 4.7.8 Emergency Operation and Signaling Devices 4.7.9 System to Monitor and Prevent Automatic Operation of the Elevator With Faulty Door Contact Circuits SECTION 4.8 ADDITIONAL REQUIREMENTS FOR COUNTERWEIGHTED HYDRAULIC ELEVATORS 4.8.1 Roping, Counterweights, and Buffers SECTION 4.9 ADDITIONAL REQUIREMENTS FOR ROPED HYDRAULIC ELEVATORS 4.9.1 Top Car Clearance
69	4.9.2 Top Counterweight Clearance and Bottom Counterweight Runby 4.9.3 Protection of Spaces Below Hoistway 4.9.4 Piston Stops 4.9.5 Piston Connections 4.9.6 Car Safety Devices 4.9.7 Speed Governors 4.9.8 Sheaves 4.9.9 Slack-Rope Device 4.9.10 Suspension Ropes and Their Connections
70	Part V Escalators SCOPE SECTION 5.1 CONSTRUCTION 5.1.1 Balustrades 5.1.2 Clearance Between Skirt and Step 5.1.3 Guards at Ceiling or Soffit Intersections 5.1.4 Antislide Device 5.1.5 Handrails 5.1.6 Handrail Guards 5.1.7 Step Risers 5.1.8 Slotting of Step Treads 5.1.9 Combplates 5.1.10 Deck Barricades
71	5.1.11 Step/Skirt Performance Index SECTION 5.2 BRAKES 5.2.1 General Requirements 5.2.2 Main Drive Shaft Brake SECTION 5.3 OPERATING AND SAFETY DEVICES 5.3.1 Starting Switches
72	5.3.2 Emergency Stop Buttons 5.3.3 Speed Governor 5.3.4 Broken Step-Chain Device 5.3.5 Application of Brake 5.3.6 Broken Drive-Chain Device 5.3.7 Skirt Obstruction Device 5.3.8 Rolling Shutter Device 5.3.9 Reversal Stop Device 5.3.10 Tandem Operation 5.3.11 Caution Signs 5.3.12 Escalator Smoke Detectors
73	5.3.13 Combplate Vertical Safety Device SECTION 5.4 LIGHTING OF ESCALATORS 5.4.1 General Requirements Figures Figure 5.3.11-1 Caution Sign
74	SECTION 5.5 ENTRANCE AND EGRESS ENDS 5.5.1 Combplates 5.5.2 Distinction Between Comb and Step 5.5.3 Adjacent Floor Surfaces 5.5.4 Safety Zone 5.5.5 Landing Access Plates
75	Part VI Dumbwaiters SCOPE SECTION 6.1 HOISTWAY, HOISTWAY ENCLOSURES, AND RELATED CONSTRUCTION 6.1.1 Machine Rooms and Machinery Spaces 6.1.2 Clearances and Runbys 6.1.3 Doors or Gates Required 6.1.4 Closing of Hoistway Doors
76	6.1.5 Hoistway-Door Vision Panels 6.1.6 Hoistway-Door or Gate Locking Devices 6.1.7 Parking Devices 6.1.8 Access to Hoistway 6.1.9 Kinetic Energy and Force Limitations for Power-Operated Vertically Sliding Doors 6.1.10 Reopening Devices for Power-Operated Car Doors or Gates SECTION 6.2 MACHINERY AND EQUIPMENT FOR HAND AND ELECTRIC DUMBWAITERS 6.2.1 Buffers and Bumpers 6.2.2 Car Frames and Platforms 6.2.3 Car Enclosures
77	6.2.4 Car Doors and Gates 6.2.5 Emergency Exits 6.2.6 Car Illumination 6.2.7 Safeties 6.2.8 Capacity and Loading 6.2.9 Driving Machines and Sheaves 6.2.10 Normal Terminal Stopping Devices 6.2.11 Final Terminal Stopping Devices 6.2.12 Operating Devices and Control Equipment 6.2.13 Emergency Operation and Signaling Devices 6.2.14 Suspension Means
78	6.2.15 Chain Data 6.2.16 Factor of Safety 6.2.17 Minimum Number and Diameter of Suspension Ropes 6.2.18 Suspension Rope Fastenings SECTION 6.3 MACHINERY AND EQUIPMENT FOR HYDRAULIC DUMBWAITERS 6.3.1 Car Buffers or Bumpers 6.3.2 Counterweights 6.3.3 Car Frames and Platforms 6.3.4 Car Enclosures, Car Doors and Gates, and Car Illumination 6.3.5 Car Safeties 6.3.6 Counterweight Safeties 6.3.7 Capacity and Loading 6.3.8 Driving Machines, Valves, Supply Piping, Fittings, and Tanks 6.3.9 Terminal Stopping Devices 6.3.10 Operating Devices and Control Equipment
79	6.3.11 Additional Requirements for Counterweighted Hydraulic Dumbwaiters
80	Part VII Hand Elevators SCOPE SECTION 7.1 HOISTWAY, HOISTWAY ENCLOSURES, AND RELATED CONSTRUCTION 7.1.1 Enclosures for Machines and Control Equipment 7.1.2 Access to Machines and Sheaves 7.1.3 Pit 7.1.4 Clearances and Runbys 7.1.5 Hoistway Entrances: Type of Entrances 7.1.6 Hoistway Gates for Landing Openings of Hand Elevators 7.1.7 Closing of Hoistway Doors 7.1.8 Hoistway-Door Vision Panel 7.1.9 Hoistway-Door Locking Devices for Hand Elevator
81	SECTION 7.2 MACHINERY AND EQUIPMENT 7.2.1 Buffers and Bumpers 7.2.2 Counterweights 7.2.3 Car Frames and Platforms 7.2.4 Car Enclosures 7.2.5 Emergency Exit 7.2.6 Illumination of Cars and Lighting Fixtures 7.2.7 Car Safety Devices 7.2.8 Capacity and Loading
82	7.2.9 Use of Partitions for Reducing Inside Net Platform Area 7.2.10 Driving-Machine Brakes 7.2.11 Power Attachments Not Permitted 7.2.12 Machinery and Sheave Beams, Supports for Hand Elevators 7.2.13 Suspension Means: Type and Number Required 7.2.14 Factor of Safety 7.2.15 Length of Suspension Members 7.2.16 Capacity Plate 7.2.17 Suspension Member Data
83	Part VIII Sidewalk Elevators SCOPE SECTION 8.1 HOISTWAY, HOISTWAY ENCLOSURES, AND MACHINE ROOMS 8.1.1 Hoistway, Hoistway Enclosures, and Machine Rooms 8.1.2 Location of Hoistway and Top-Landing Opening 8.1.3 Maximum Size of Opening Permitted in Sidewalk 8.1.4 Protection of Horizontal Openings in Sidewalks or Other Exterior Areas 8.1.5 Hinged-Type Swinging Doors 8.1.6 Vertically Lifting Covers
84	SECTION 8.2 MACHINERY AND EQUIPMENT 8.2.1 General Requirements 8.2.2 Buffers and Bumpers 8.2.3 Counterweights 8.2.4 Car Frames and Platforms 8.2.5 Bow-Irons and Stanchions 8.2.6 Car Enclosures and Car Doors and Gates 8.2.7 Car and Counterweight Safeties and Governors 8.2.8 Capacity and Loading 8.2.9 Driving Machines and Sheaves 8.2.10 Terminal Stopping Devices 8.2.11 Locking Devices for Hinged Swinging Doors or Vertically Lifting Covers in Sidewalks or Other Areas Exterior to the Building 8.2.12 Requirements for Electrical Wiring and Electrical Equipment 8.2.13 Clearance Between Loading Side of Car Platforms and Hoistway Enclosures
85	8.2.14 Operating Devices and Control Equipment of Sidewalk Elevator
86	Part IX Moving Walks SCOPE SECTION 9.1 PROTECTION OF FLOOR OPENINGS 9.1.1 Protection Required SECTION 9.2 PROTECTION OF SUPPORTS AND MACHINE SPACES AGAINST FIRE 9.2.2 Protection Required SECTION 9.3 CONSTRUCTION REQUIREMENTS 9.3.1 Angle of Inclination 9.3.2 Geometry 9.3.3 Balustrades
87	9.3.4 Handrails 9.3.5 Pallet-Type Treadway 9.3.6 Belt-Type Treadway 9.3.7 Width SECTION 9.4 ENTRANCE AND EGRESS ENDS 9.4.1 Combplates 9.4.2 Distinction Between Comb and Step 9.4.3 Adjacent Floor Surfaces SECTION 9.5 DRIVING MACHINE, MOTOR, AND BRAKE 9.5.1 Brakes
88	SECTION 9.6 OPERATING AND SAFETY DEVICES 9.6.1 General 9.6.2 Starting Switch 9.6.3 Emergency Stop Buttons 9.6.4 Speed Governor 9.6.5 Application of an Electrically Released Brake 9.6.6 Broken Drive-Chain Switch 9.6.7 Rolling Shutter Device 9.6.8 Reversal Stop Device 9.6.9 Tandem Operation 9.6.10 Disconnected Motor Safety Device 9.6.11 Signs
89	9.6.12 Broken Treadway Device 9.6.13 Moving Walk Smoke Detectors 9.6.14 Combplate Vertical Safety Device SECTION 9.7 LIGHTING AND ACCESS 9.7.1 Lighting of Treadway 9.7.2 Access to Interior
90	Part X Private Residence Elevators SCOPE SECTION 10.1 HOISTWAY, HOISTWAY ENCLOSURES, AND RELATED CONSTRUCTION 10.1.1 Hoistway Enclosure Construction
91	10.1.2 Pits 10.1.3 Top Car Clearance 10.1.4 Protection of Hoistway Openings
92	10.1.5 Pipes in Hoistways 10.1.6 Horizontal Car Clearances 10.1.7 Guarding of Suspension Means SECTION 10.2 CARS 10.2.1 Car Frames and Platforms
93	10.2.2 Car Enclosure 10.2.3 Number of Compartments 10.2.4 Car Doors and Gates 10.2.5 Light in Car SECTION 10.3 COUNTERWEIGHTS 10.3.1 General Requirements 10.3.2 Location and Guarding of Counterweights
94	SECTION 10.4 SAFETIES AND GOVERNORS 10.4.1 Safeties Required 10.4.2 Operation of Safeties 10.4.3 Application of Safeties 10.4.4 Location of Speed Governor 10.4.5 Opening of the Brake Circuit on Safety Application 10.4.6 Governor Ropes SECTION 10.5 CAR AND COUNTERWEIGHT GUIDE RAILS AND FASTENINGS 10.5.1 Material 10.5.2 Fastenings, Deflections, and Joints 10.5.3 Extension of Guide Rails at Top and Bottom of Hoistway SECTION 10.6 CAR AND COUNTERWEIGHT BUFFERS 10.6.1 Buffers and Buffer Supports SECTION 10.7 DRIVING MACHINES, SHEAVES, AND THEIR SUPPORTS 10.7.1 Overhead Machinery Beams and Supports
95	10.7.2 Material for Sheaves and Drums and Minimum Diameter 10.7.3 Fastening of Driving Machines and Sheaves to Underside of Overhead Beams 10.7.4 Factor of Safety for Overhead Beams and Supports 10.7.5 Hydraulic Driving Machine 10.7.6 Screw Machines 10.7.7 Rack-and-Pinion Machine 10.7.8 Set Screw Fastenings 10.7.9 Friction Gearing, Clutch Mechanisms, or Couplings 10.7.10 Use of Cast Iron in Gears 10.7.11 Driving-Machine Roller Chains and Sprockets 10.7.12 Driving-Machine Brakes
96	10.7.13 Emergency Operation (Manual) SECTION 10.8 TERMINAL STOPPING DEVICES 10.8.1 Stopping Devices Required 10.8.2 Operation of Stopping Devices SECTION 10.9 OPERATING DEVICES AND CONTROL EQUIPMENT 10.9.1 Type of Operation 10.9.2 Control and Operating Circuit Requirements 10.9.3 Key-Operated Switches 10.9.4 Phase Reversal and Failure Protection 10.9.5 Emergency Stop Switch
97	10.9.6 Slack-Rope and Slack-Chain Devices for Winding Drum and Roller-Chain-Type Driving Machines SECTION 10.10 EMERGENCY SIGNAL DEVICES 10.10.1 Emergency Signal SECTION 10.11 LIMITATION OF LOAD, SPEED, AND RISE 10.11.1 Capacity 10.11.2 Speed 10.11.3 Rise SECTION 10.12 MARKING PLATES 10.12.1 Capacity Plate SECTION 10.13 SUSPENSION MEANS 10.13.1 Types Permitted 10.13.2 Suspension Ropes 10.13.3 Factor of Safety of Suspension Means 10.13.4 Arc of Contact of Suspension Means on Sheaves and Sprockets 10.13.5 Spare Rope Turns on Winding Drums 10.13.6 Securing of Wire Suspension Ropes to Winding Drums 10.13.7 Splicing and Replacement of Suspension Ropes
98	10.13.8 Fastening of Wire Rope Suspension Means to the Car or to the Counterweight 10.13.9 Replacement of Chains and Sprockets
99	Figure A-1 Distance Between Swinging Hoistway Doors and Car Doors and Gates NONMANDATORY APPENDIX A DISTANCES BETWEEN HOISTWAY DOORS AND CAR DOORS OR GATES
100	Figure A-2 Distance Between Sliding Hoistway Doors and Car Doors and Gates
101	Figure A-3 Typical Sliding Hoistway Door Space Guard and Sight Guard
102	Figure A-4 Typical Swinging Hoistway Door Space Guards
103	Figure A-5 Typical Space Guard for Swinging Doors With Cutout for Doorknob, Handle, or Pull Bar
104	Figure B-1 Pusher-Type Roped-Hydraulic Elevators Figure B-2 Puller-Type Roped-Hydraulic Elevators NONMANDATORY APPENDIX B TYPES OF ROPED-HYDRAULIC ELEVATORS
105	NONMANDATORY APPENDIX C ASME/ANSI A17.1-1987, Rules 211.3–211.8 (See 3.11.3) Rule 211.3 Firefighters’ Service — Automatic Elevators
106	Rule 211.4 Firefighters’ Service — Designated Attendant Operated Elevators Rule 211.5 Firefighters’ Service — Elevators Arranged for Dual Operation
107	Rule 211.6 Firefighters’ Service — Inspection Operation Rule 211.7 Firefighters’ Service Operating Procedures Rule 211.8 Standby (Emergency) Power
108	NONMANDATORY APPENDIX D RACK AND PINION MACHINES (ASME/ANSI A17.1-1987, Rules 208.3–208.9d, and Rule 1200.4e) Rule 208.3 Factor of Safety for Driving Machines and Sheaves Rule 208.4 Fasteners Transmitting Load Rule 208.5 Shaft Fillets and Keys
109	Rule 208.6 Cast-Iron Worms and Worm Gears Rule 208.7 Friction Gearing and Clutches Rule 208.8 Driving-Machine Brakes Rule 208.9 Indirect-Drive Machines
110	NONMANDATORY APPENDIX E ASCENDING CAR OVERSPEED AND UNINTENDED CAR MOVEMENT PROTECTION
111	Table E-1 Traction Elevator Brake Type, Function, and Performance
112	Figure E-1 Ascending Car Overspeed Protection
113	Figure E-2 Unintended Car Movement Protection
114	INDEX