Missouri Minimum Safety Codes for Existing Elevator Equipment

PURPOSE: The purpose of this rule is to take exceptions to the referenced Codes or provide alternatives. It has been noted that some areas of the referenced Codes are too restrictive or may not be feasible to implement, or may be unreasonable for certain types of installations. (1) In a political subdivision or municipality that had adopted an edition of ASME A17.1 code, elevator equipment shall conform to the code requirements adopted and enforced at the time the elevator equipment was installed. The following standards apply to all existing elevator equipment installed prior to July 1, 1999 as provided in 11 CSR 40-5.060. Any installation which is in compliance with the latest ASME A17.1 version adopted and amended by the Elevator Safety Board, unless as exempted by 701.359, RSMo shall be considered to be in compliance with 11 CSR 405.065. (A) Hoistways. 1. Each passenger elevator hoistway landing shall be protected with a door or gate. The door or gate shall be of solid construction and shall guard the entire entrance. 2. All automatic passenger elevators with power doors shall have non-vision panels on hoistway doors. 3. Each hoistway landing in any elevator hoistway shall be continuously provided with a properly working door or gate. 4. Where freight elevator hoistway doors or gates are of open or lattice construction they shall be at least six feet (6') high and shall come within two inches (2") of the floor when closed. Gates shall be constructed as to reject a ball two inches (2") in diameter. They shall withstand a force of two hundred fifty (250) pounds pressure applied in the center of the gate without breaking or forcing it out of its guides. 5. Manually operated bi-parting entrances of elevators which can be operated from the landings shall be provided with pull straps on the inside and outside of the upper panel where the lower edge of the upper panel is more than six feet six inches (6'6") above the landing when the panel is in the fully opened position. 6. Each hoistway door or gate shall be provided with interlocks designed to prevent the car from moving unless the doors or gates are closed. Where doors or gates do not lock when closed they shall lock when the elevator is not more than twelve inches (12") away from the floor. Passenger elevator hoistway doors shall be closed and locked before the car leaves the floor. 7. All hoistway-door interlocks shall be of the hoistway unit type. 8. Automatic fire doors shall not lock any landing opening in the hoistway enclosure from the hoistway side nor lock any exit leading from any hoistway landing to the outside of the building. 9. Emergency keys for hoistway doors and service keys shall be kept readily accessible to authorized persons. 10. Access means shall be provided at one (1) upper landing to permit access to the top of the car, and at the lowest landing if this landing is the normal point of access to the pit. 11. Each hoistway door or gate, which is counterweighted, shall have its weights enclosed in a box-type guide or run in metal guides. The bottom of the guides or boxes shall be so constructed as to retain the counterweight if the counterweight suspension means breaks. 12. Hoistways containing freight elevators shall be fully enclosed. Enclosures shall be unperforated to a height of six feet (6') above each floor or landing and above the treads of adjacent stairways. Unperforated enclosures shall be so supported and braced as to deflect not over one inch (1") when subjected to a force of one hundred (100) pounds applied horizontally to any point. Open work enclosure may be used above the six-foot (6') level and shall reject a ball two inches (2") in diameter. 13. Hoistways containing passenger elevators shall be fully enclosed and the enclosure shall be of solid construction to its full height. 14. Except where vertical opening biparting doors are provided, all elevators provided with automatic leveling, inching, or teasing devices and where the landing sills project within the hoistway, shall be equipped with a bevel on the underside of the landing sill. Bevels shall be constructed of smooth concrete or not less than sixteen (16) gauge metal securely fastened to the hoistway entrance. Bevels shall extend the full depth of the leveling zone plus three inches (3"). 15. Every hoistway window opening seven (7) stories or less on an outside wall above a thoroughfare and every such window three (3) stories or less above a roof of the building or of an adjacent building shall be guarded to prevent entrance by fire or emergency rescue persons. Each such window shall be marked “hoistway” in a readily visible manner. 16. All electrical wiring in the hoistway shall be enclosed in metal conduit, flexible conduit or metal raceway or be in compliance with NFPA 70, National Electric Code. 17. No pipes conveying liquids, gases, or vapors shall be located in a hoistway. Exception: branch lines for sprinkler system and low pressure steam lines for heating. (B) Car Enclosure: Passenger. 1. Each passenger car shall be fully enclosed except on the sides used for entrance and exit. The enclosure shall be of solid construction. Grill work at the top of the sides shall not be more than eight inches (8") high. If the car is provided with a solid door and there is no grill work in the enclosure, adequate means of ventilation shall be provided. 2. Each passenger car enclosure shall have a top constructed of solid material. The top shall be capable of sustaining a load of three hundred (300) pounds on any area of two feet (2') on a side and one hundred (100) pounds applied at any point. Simultaneous application of these loads is not required. 3. Passenger car enclosure tops shall have an emergency exit with cover. Opening size shall be as set forth in ASME A17.1, rule 204.1E, 1955 edition. Exception: Hydraulic elevators provided with a manual lowering valve. 4. Each passenger car shall have a door or gate at each entrance. Doors or gates shall be of the horizontally sliding type. Doors shall be of solid construction. Gates shall be of the collapsible type. Gates and doors shall conform to ASME A17.1, rule 204.4, 1955 edition. 5. Each passenger car door or gate shall have an electric contact to prevent the car from running with doors or gates open. Exceptions: A. By a car-leveling or truck-zoning device; B. By a combination hoistway access switch and operating device; or C. When a hoistway access switch is operated. 6. All automatic passenger elevators with power doors shall have reopening devices on the doors, designed to reopen doors in the event the doors should become obstructed. 7. Where a car door or gate of an automatic or continuous-pressure operation passenger elevator is closed by power, or is of the automatically released self-closing type, and faces a manually operated or self-closing hoistway door, the closing of the car door or gate shall not be initiated unless the hoistway door is in the closed position; and the closing mechanism shall be so designed necessary to prevent closing of a horizontally sliding car door or gate from rest shall be not more than thirty (30) pounds. Exception: Where a car door or gate is closed by power through continuous pressure of a door-closing switch, or of the car operating device, and where the release of the closing switch or operating device will cause the car door or gate to stop or to stop and reopen. 8. Each passenger car shall have lighting inside the enclosure of not less than five (5) foot-candles. Bulbs and tubes shall be guarded to prevent breakage. 9. Each passenger elevator shall have a capacity plate prominently displayed in its enclosure. The capacity plate shall list its capacity in pounds. 10. All passenger elevator car floors shall be maintained so that persons are not exposed to the hazards of tripping or falling. 11. All automatic passenger elevators shall be provided with an alarm bell capable of being activated from inside the car and audible outside the hoistway. If the elevator is not equipped with a bell, a two- (2-) way conversation device to the elevator and a ready accessible point outside the hoistway may be acceptable. 12. All automatic passenger elevators shall have their door open zones adjusted to where the door shall not open unless the car has stopped within six inches (6") of floor level. (C) Car Enclosure: Freight. 1. Each freight elevator car shall have a solid enclosure of at least six feet (6') in height. The space between the solid section and the car top shall be covered solid or with perforated or lattice-type work. The perforated or lattice work shall reject a ball one and one-half inches (1 1/2") in diameter. The portion of open-type enclosure, which passes the counterweights, shall be of solid construction the entire width of the counterweights plus six inches (6") on either side. The enclosure top shall be provided with an emergency exit. Exception: Hydraulic elevators provided with a manual-lowering valve. 2. Each freight car enclosure shall have doors or gates at each entrance and shall be not less than six feet (6') high. Each door or gate shall be constructed in accordance with ASME A17.1, rule 204.4, 1955 edition. 3. Each car door or gate on a freight elevator shall have electric contacts to prevent the car from running with doors or gates open. Exceptions: A. By a car-leveling or truck-zoning device; B. By a combination hoistway access switch and operating device; or C. When a hoistway access switch is operated. 4. Each freight elevator car enclosure shall be provided with a top. The top may be solid or open-work construction and shall be of metal. The open work shall reject a ball two inches (2") in diameter. Car tops shall be constructed to sustain a load of two hundred (200) pounds applied at any point on the car top. The top shall not have hinged or folding panels other than the emergency exit cover. 5. Each freight car enclosure shall have lighting not less than two and one-half (2 1/2) foot-candles. Bulbs or tubes shall be guarded to prevent breakage. 6. Each freight car enclosure shall have capacity plate, loading class plates, and a “No Passengers” sign conspicuously posted. Letters shall not be less than one-half inch (1/2") high. 7. Freight elevators shall not be loaded to exceed the rated load as stated on their capacity plates. 8. Each freight elevator car floor shall be maintained so that personnel will not readily slip or trip. The floor shall be maintained so that it will hold its rated load without breaking through at any place in the car. 9. Freight elevators shall not be permitted to carry passengers other than persons to load and unload material and the operator. Permission may be granted to allow the carrying of employees on freight elevators. Application shall be submitted and may be approved by the authorized representative after which the installation shall be tested as determined by the Department of Public Safety. (D) Brakes. 1. Each electric elevator shall be provided with an electric brake. 2. Each brake shall be of the friction type applied by a spring or springs or gravity and released electrically. The brake shall be capable of holding the car at rest with its rated load. (E) Machines. 1. Friction gearing or clutch mechanisms shall not be used for connecting the drum or sheaves to the main driving mechanism. 2. Set screw fastenings shall not be used on power elevators in lieu of keys or pins on connections subject to torque or tension. 3. Portable power-chain or cable hoist machines shall not be used to raise or lower an elevator car. 4. No belt or chain driven power machine shall be used for any elevator unless the machine is provided with a broken belt or broken chain safety switch of the electrical non-automatic reset type. Exception: Hydraulic machines. (F) Electrical Switches. 1. All electric elevators shall have a labeled emergency stop switch. The switch shall be located on or adjacent to the operating panel. 2. All electric elevators shall have upper and lower final limit switches. Open-type switches shall not be accepted. Drum-type machines shall have final limit switches mounted on the machine and hoistway final limit switches. 3. All operating devices of car switch operations shall automatically return to the stop position and latch there when released. 4. Tiller-cable operations shall not be used unless all direction switches on controllers are mechanically operated. Contacts on direction switches shall be broken when the cable is at the centered position. 5. No elevator shall be provided with a switch or device which makes more than one (1) door or gate switch inoperative at any one time. Exception: Fire fighter service switches. 6. No person at any time shall make any required safety device or electrical protective device inoperative, except where necessary during tests, inspections or maintenance. Such devices shall be restored to their normal operating conditions as soon as all tests, inspections and maintenance has been completed. The facility shall not be left unattended while any of these devices are inoperative. 7. Each winding drum machine shall be provided with an electrical switch which shall disconnect power to the hoisting motor and brake when cables are slackened. 8. Any persons entering an elevator pit for any reason shall have the power to the elevator removed at the main line disconnect switch. The disconnect switch shall be red tagged to prevent the power from being placed back on the elevator controls. Exception: Elevators provided with a pit stop switch. 9. A fused disconnect means for all elevators shall be provided. Disconnect switch shall be located in the machine room and be readily accessible from the machine. (G) Maintenance, Repair and Alterations. 1. All maintenance, repair and replacement shall comply with the applicable standard established by 11 CSR 40-5.050(1) ASME A17.1, section 8.6 Safety Code for Elevators and Escalators. 2. All alterations shall comply with the applicable standards established by 11 CSR 40-5.050(1) ASME A17.1, section 8.7 Safety Code for Elevators and Escalators. 3. All maintenance, repair and alterations to platform lifts and stairway chair lifts shall comply with the applicable standards established by 11 CSR 40-5.050(1) ASME A18.1, Safety Standard for Platform Lifts and Stairway Chair Lifts. (H) Machine Rooms. 1. All means of access to elevator machine rooms shall be of a permanent nature and shall be constructed and maintained in a clear and unobstructed manner. 2. The elevator machine and control equipment shall be located in a separate room or separated space designed as an elevator machine room or space and shall be accessible only to authorized personnel. Existing machines and equipment essential to the operation and purpose of the building are permitted but must not interfere with the safety and work area for maintaining elevator equipment. Pipes conveying liquid, gas, or vapor that cross overhead of elevator equipment or come in close proximity of the equipment shall be guarded or guttered. Where other existing machines and equipment essential to the operation and purpose of the building are located in the machine room or space, the elevator related equipment and machines shall be separated by a substantial grill constructed of noncombustible material not less than six feet (6') high and the grill shall be of a design that will reject a ball two inches (2") in diameter. All rooms or enclosures shall have a self-closing and self-locking door and shall be operable from the interior space without use of a key. After the effective date of this rule, no equipment shall be added to the machine room or space that is not used in connection with the operation of the elevator. 3. All elevator machine rooms shall be provided with a floor. The floor shall cover the entire area of the machine room and hoistway. 4. Machine room floors shall be kept clean and free of grease and oil. Articles or materials not necessary for the maintenance or operation of the elevator shall not be stored therein. Flammable liquids having a flash point of less than one hundred ten degrees Fahrenheit (110°F) shall not be stored in the machine room. 5. Lighting in the machine room shall be not less than ten (10) foot-candles at floor level. 6. Where there is more than one machine in a room, each machine shall have a different number conspicuously marked on it. The controller, disconnect switch, and relay panels for each machine shall be conspicuously numbered to correspond to the machine it controls. 7. All electrical equipment in the machine room shall be grounded which shall conform to ASME A17.1, 1996 edition and NFPA, 70, National Electric Code. 8. All electrical wiring in the machine room shall be enclosed in metal conduit, flexible conduit or metal raceways or be in compliance with NFPA 70, National Electric Code. 9. Each elevator having polyphase alternating current power supply shall be provided with means to prevent the starting of the elevator motor if: A. The phase rotation is in the wrong direction; or B. There is a failure of any phase. This protection shall be considered provided in the case generator-field control having alternating current motor-generator driving motors, provided a reversal of phase will not cause the elevator driving-machine motor to operate in the wrong direction. Controllers whose switches are operated by polyphase torque motors provide inherent protection against phase reversal or failure. (I) Pits. 1. All pits shall be kept dry, clean, and free of equipment or material not relating to the operation of the elevator. Exception: Sump pumps. 2. Buffers (spring or oil type) under cars and counterweights shall be permanently fastened to the floor or their supporting beams. 3. All elevators shall have counterweight guards. Guards shall be of unperforated metal of at least the strength of or braced to the equivalent strength of number fourteen (14) gauge sheet steel. Guards shall extend from a point not more than twelve inches (12") above the pit floor to a point not less than seven feet (7') above the pit floor. Where guards are not feasible, warning chains shall be installed on the bottom of the counterweights and shall extend no less than five feet (5') below counterweight. Chains shall be of a number ten (10) U.S. gauge wire or of equal size. Exception: When compensating chains or ropes are used, a counterweight guard is not required. 4. Buffers shall be installed where elevator pits are not provided with buffers and where the pit depth will permit, buffers shall comply with ASME A17.1, 1955 edition, section 201. 5. Where the depth of any pit is four feet (4') or more it shall have a ladder permanently installed. The ladder shall extend not less than thirty inches (30") above the sill of the access door, or hand grips shall be provided to the same height. Ladder shall be of noncombustible material. 6. A permanent lighting fixture shall be provided in all pits to provide an illumination of not less than five (5) foot-candles at the pit floor. The fixture switch shall be provided and accessible from the pit access door. 7. An enclosed stop switch meeting the requirements of ASME A17.1, 1995 edition, rule 210.2(e) shall be installed in the pit of all power elevators and be accessible from the pit access door. 8. Pit sump holes, with or without pumps, and well holes that are accessible, shall be covered flush with the pit floor. The covering shall consist of a noncombustible material. (J) Counterweights. 1. Broken or cracked sections of counterweights shall be replaced. 2. Counterweight hanger rods, tie rods or both shall firmly support and secure the counterweight sections in place. 3. Wire ropes extending through counterweights from one (1) stack to another shall be guarded by metal sleeves attached to the wire ropes. Guards shall be of a suitable design to prevent accidental crushing or deforming for the ropes and rope sockets. Stacks shall not be spaced less than eight inches (8") apart. (K) Car Platforms and Car Slings. 1. All platforms shall be soundly constructed without cracks or breaks in stringers or frames. All floors shall be free of holes. 2. All car slings shall be soundly constructed and free of cracks or breaks. 3. Where cable sheaves are used on the crosshead, they shall be firmly attached and free of cracks or breaks. 4. All elevators shall have data plates attached to the crosshead. 5. All elevators with automatic leveling, inching or teasing devices shall have a platform guard or an apron. All other elevators shall have warning chains hung within two inches (2") of the edge of the platform on the entrance sides. Chains shall be of number ten (10) U.S. gauge wire or of equal size. Chains shall extend not less than five feet (5') below the platform and shall not be spaced more than four inches (4") apart. 6. All car slings shall have guide shoes at the top and bottom of the sling. Shoes that are worn to a degree which affect the safe operation of the car shall be repaired or replaced. (L) Wire Ropes—Hoisting, Governor, and Tiller. 1. All hoisting and governor ropes, when replaced, shall have rope tags. The tags shall provide the following information: A. The diameter in inches; B. The manufacturer’s rated breaking strength; C. The grade of material used; D. The month and year ropes were installed; E. Whether preformed or non-preformed; F. Construction classification; G. Name of person or firm who installed ropes; and H. Name of manufacturer of ropes. 2. Wire ropes on drum-type machines shall be resocketed in compliance with ASME A17.1, 1996 edition, rule 1206.3. 3. Suspension ropes on drum-type machines shall have not less than one (1) turn of the rope on the drum when the car is resting on the fully compressed buffers. 4. Winding drum machines shall not be used unless they are provided with not less than two (2) hoisting ropes. Each counterweight stack shall be provided with not less than two (2) ropes. 5. Tiller cables on cable-operated elevators shall be kept free of breaks. 6. On tiller-cable operations, the cable shall pass through a guiding or stopping device mounted on the car. The cable shall be provided with adjustable stop balls and be provided with means to lock and hold the car at a floor. Stop balls at top and bottom shall be adjusted to automatically stop the car. The tiller cable shall be completely enclosed in the hoistway. 7. All hoisting or counterweight ropes located outside of the hoistway that are exposed shall be covered with a box-type guard. The guard shall be not less than six feet (6') high from floor level. 8. Hoisting, governor, and tiller ropes shall not be lengthened or repaired by splicing. 9. Suspension means of chains other than a roller chain type shall not be allowed. Any elevator suspended by a roller chain type shall not be used for the carrying of passengers. Exception: Elevators for the disabled. 10. Hoisting ropes for power elevators shall not be less than three-eighths inch (3/8") in diameter. 11. Hoisting rope fastening means shall be of the socket, babbitting, or wedge type. Clamps shall not be used. 12. Rope (cable) replacement. Hoisting, governor, and tiller ropes shall be replaced when the Inspection of Elevators, Escalators and Moving Walks, ASME A17.2, 1996 edition Inspectors’ Manual, Division 103, Item 103.4 dictates they shall be changed. (M) Car Safeties and Speed Governors. 1. Each elevator suspended by ropes shall be provided with mechanically applied car safeties which shall be capable of stopping and sustaining its rated load. 2. Broken rope or slack rope safeties may be allowed if the car speed is not in excess of fifty feet per minute (50 fpm). 3. Elevators which are provided solely with broken rope or slack rope safeties shall not be used for passenger service. Exception: Elevators for the disabled. 4. All safeties shall be adjusted so that clearances from the rail shall be in accordance with ASME A17.1, 1955 edition rule 1001.2. 5. All slack cable safeties shall be provided with an electrical switch which disconnects power to the elevator machine and brake when setting of the safeties occurs. 6. All safeties operated by a speed governor shall be provided with a speed switch operated by the governor when used with type B or C car safeties on elevators having a rated speed exceeding one hundred fifty (150) fpm. A switch shall be provided on the speed governor when used with a counterweight safety for any car speed. 7. Speed governors shall have their means of speed adjustment sealed. 8. For hoistways not extending to the lowest floor and where space below the hoistway is used for a passageway or is occupied by persons, or if unoccupied but not secured against unauthorized access, the counterweights of the elevator shall be provided with safeties. Safeties shall be tripped by a speed governor if the car speed is in excess of one hundred fifty (150) fpm. Speed governors shall be set to trip above the car governor tripping speed but not more than ten percent (10%) greater. (N) Guide Rails. 1. All guide rails and brackets whether of wood or steel shall be firmly and securely anchored or bolted in place. Where T rail is used all fish-plate bolts shall be tight. This shall comply with ASME A17.1, 1955 edition, section 200. 2. Where guide rails which are worn to such a point that proper clearance of safety jaws cannot be maintained, the worn sections shall be replaced to achieve clearances as specified in ASME A17.1, 1996 edition, rule 1001.2. (O) Existing Hydraulic Elevators. 1. Cylinders of hydraulic-elevator machines shall be provided with a means for releasing air or other gas. 2. Each pump or group of pumps shall be equipped with a relief valve conforming to the following requirements: A. Type and location. The relief valve shall be located between the pump and the check valve and shall be of such a type and so installed in the bypass connection that the valve cannot be shut off from the hydraulic system; B. Setting. The relief valve shall be preset to open at a pressure not greater than that necessary to maintain one hundred twenty-five percent (125%) of working pressure; C. Size. The size of the relief valve and bypass shall be sufficient to pass the maximum rated capacity of the pump without raising the pressure more than twenty percent (20%) above that at which the valve opens. Two (2) or more relief valves may be used to obtain the required capacity; and D. Sealing. Relief valves having exposed pressure adjustments if used, shall have their means of adjustment sealed after being set to the correct pressure. Exception: No relief valve is required for centrifugal pumps driven by induction motors, provided the shut-off, or maximum pressure which the pump can develop, is not greater than one hundred and thirty-five percent (135%) of the working pressure at the pump. 3. Storage and discharge tanks shall be covered and suitably vented to the atmosphere. 4. All repair and alterations of hydraulic elevators shall comply with ASME A17.1, 1996 edition, section 1201 with supplements thereto. (P) Existing Sidewalk Elevators. 1. Hoistways shall be permanently enclosed. The enclosures shall conform to ASME A17.1, 1955 edition rule 401.1. 2. All interior landings shall have a door or gate which shall be provided with an interlock. 3. Doors opening in sidewalks or other areas exterior to the building shall be of the hinged type. Doors or covers shall be designed to hold a static load of three hundred pounds per square foot (300 ppsf). Doors shall always be closed unless elevator is at the landing. 4. Stops shall be provided to prevent the cover in the opening of the sidewalk from opening more than ninety degrees (90°) from its closed position. 5. Covers in sidewalk shall be designed to close when the car descends from the top landing. 6. Recesses or guides which will securely hold the cover in place on the car stanchions shall be provided on the underside of the cover. 7. All electrical wiring shall be enclosed in metal conduit, flexible conduit, or metal raceways. If hoistway opens in the sidewalk, the wiring shall be weatherproof. 8. Operating devices and control equipment shall comply with ASME A17.1, 1955 edition, rule 402.4. 9. All electric sidewalk elevators shall have upper and lower final limit switches. Open-type switches shall not be allowed. 10. Cars shall have enclosures which shall be not less than six feet (6') in height provided the stanchions and bow iron are of sufficient height. The enclosure shall be provided with electric contacts to prevent the car from running with doors or gates open. 11. Cars shall have safeties. Where the speed of the elevator does not exceed fifty (50) fpm, car safeties which operate as a result of breaking or slackening of the hoisting ropes may be used. Such safeties may be of the inertia type or approved type without governors. Governors shall not be required when car speed does not exceed fifty (50) fpm. 12. Car enclosures and car gates shall not be required for hand-powered sidewalk elevators. 13. All repair and alterations shall comply with ASME A17.1, 1955 edition, section 1200. (Q) Existing Hand Elevators. 1. Hand-powered elevators shall have hoistway doors. Doors shall be of the selfclosing and self-locking type. 2. Hoistway doors shall have signs attached to them indicating elevator hoistway. Sign shall be as follows in not less than twoinch (2") letters: DANGER ELEVATOR— KEEP CLOSED. 3. All hand-powered elevators shall be provided with safeties or slack cable devices. Safeties do not have to be operated by a speed governor unless the speed is in the excess of fifty (50) fpm. 4. Hand-powered elevators shall have a car enclosure which shall be constructed of metal or sound seasoned wood. The enclosure shall cover all sides which are not used for entrance or exit. The enclosure shall be secured to the car platform or frame in such a manner that it cannot work loose or become displaced in ordinary service. 5. Each hand-powered elevator shall be provided with a brake which shall be capable of stopping and sustaining the car whether loaded or unloaded. 6. Hand-powered elevators shall not be converted or changed to electric powered unless the complete facility is brought into conformity with ASME A17.1, 1996 edition. 7. Repair or replacement of worn or broken parts shall be in compliance with ASME A17.1, 1996 edition, rule 1202.2. (R) Power Operated Special Purpose Elevators. 1. Elevators complying with the following requirements may be installed in any structure where the elevator is not accessible to the general public, is used exclusively for designated operating and maintenance employees only, and where transportation of one (1) or two (2) persons is required to attend machinery or equipment frequently. 2. The inside platform area of the car shall not exceed nine (9) square feet. The rated speed shall not exceed one hundred (100) fpm. The rated load shall not exceed six hundred fifty (650) pounds. 3. Hoistways shall be enclosed to their full width, to a height of not less than seven feet (7') with solid or perforated noncombustible material braced to deflect not more than one inch (1") when subjected to a force of one hundred (100) pounds applied horizontally at any point. Open work enclosures shall be at least number thirteen (13) steel wire gauge or expanded metal at least number thirteen (13) U.S. gauge and shall reject a ball two inches (2") in diameter. Where counterweights pass, landing and stairway side shall be of solid construction. 4. Wiring shall comply with the requirements of ASME A17.1, 1978 edition and NFPA 70. 5. Counterweights shall comply with the requirements of ASME A17.1, 1978 edition, Part XV. 6. Hoistway doors shall comply with rules ASME A17.1, 1978 edition, Part XV. 7. Cars shall be solidly constructed in accordance with ASME A17.1, 1978 edition, Part XV. 8. Car enclosure. A. Except at the entrance, the car shall be enclosed on all sides and the top. The enclosure at the sides shall be solid or open work. All open work shall reject a ball one inch (1") in diameter. The enclosure shall be constructed of sufficient strength that it will not deflect more than one inch (1") at any one (1) point. B. There shall be an electric light to illuminate the car or hoistway with the switch placed on or near the operating panel. C. There shall be no glass used in the elevator car except for the car light. 9. A car door shall be provided at each car entrance. Door or gate shall guard the complete entrance. The door or gate shall be at least seven feet (7') high, of metal construction with solid or open construction to reject a ball one inch (1") in diameter. A contact switch shall be provided to prevent the operation of the elevator with doors or gates open. The door or gate shall be provided with interlocks. 10. Guide rails shall comply with ASME A17.1, 1978 edition, Part XV. 11. The means and methods of suspension shall comply with ASME A17.1, 1978 edition, Part XV. 12. Electrical switches shall comply with ASME A17.1, 1978 edition, Part XV. 13. Brakes shall comply with ASME A17.1, 1978 edition Part XV. 14. Emergency signal or communication shall comply with ASME A17.1, 1978 edition, Part XV. (S) Fire Service. 1. Elevators with fire service features shall comply with the edition of ASME A17.1 that the elevator was constructed to meet. (T) Existing Dumbwaiters, Escalators, and Moving Walks. 1. Dumbwaiters. All dumbwaiters whether electric or hand powered shall conform to ASME A17.1, 1971 edition, section 700. Exceptions: Required rules for hoistway construction as set forth in ASME A17.1, 1971 edition shall not apply to existing installations. 2. Escalators. A. Each escalator shall be provided with an electrically released mechanically applied brake capable of stopping the up and down traveling escalator with any load up to and including the rated load. The brake shall be located either on the driving machine or on the main drive shaft. B. Starting switches shall be of the key-operated type. Starting switches shall be located on or near the escalator. C. Emergency stop buttons or other type manually operated switches having red buttons or handles shall be accessibly located at or near the bottom and top landings. The buttons or levers shall be protected to prevent accidental operation. D. A broken step-chain device shall be provided on each escalator that will cause interruption of power to the driving machine if a step chain breaks or if excessive sag occurs in either step chain. E. Each escalator shall have comb plates at top and bottom landings of the escalator. Comb plate teeth shall be meshed with and set into slots in the tread surface of the steps so that the points of the teeth are always below the upper surface of the treads. F. Each escalator balustrade or molding on the balustrade shall have a smooth surface. Screw heads shall set flush with the surface or be of the oval head type without any burrs or rough places on their surface. G. The clearance on either side of the steps between the step tread and the adjacent skirt panel shall be not more than three-sixteenths inch (3/16"). H. Step treads shall be illuminated throughout their run. The light intensity shall be not less than two (2) foot-candles. I. An enclosed fused disconnect switch or circuit breaker arranged to disconnect the power supply to the escalator shall be in each machine room or wherever the controller is located. J. A stop switch shall be provided in each machinery space where means of access to the space is provided. The switch when opened shall cause electric power to be removed from the escalator driving-machine motor and brake. The switch shall be of the manually opened and closed type and shall be marked “STOP.” K. Hand or finger guards shall be provided at the point where the handrail enters the balustrade. L. Where the clearance of the upper outside edge of the balustrade and a ceiling or scaffold is less than twelve inches (12") or where the intersection of the outside balustrade and a ceiling or soffit is less than twenty-four inches (24") from the centerline of the handrail, a solid guard shall be provided in the intersection of the angle of the outside balustrade and the ceiling or soffit. The vertical front edge of the guard shall project a minimum of fourteen inches (14") horizontally from the apex of the angle. The escalator side of the vertical face of the guard shall be flush with the face of the wellway. The exposed edge of the guard shall be rounded. 3. Moving walks. A. Each moving walk shall be provided with an electrically released, mechanically applied brake capable of stopping and holding treadway with a load up to and including the rated load. B. Starting switches shall be of the key-operated type and shall be located within sight of the exposed treadway. C. Each moving walk shall be provided with an emergency stop button or manually operated switch at each entrance and exit. The switches shall be protected to prevent the accidental operation of them. The operation of any of these switches shall interrupt the power to the driving-machine motor and brake. D. A device shall be provided which will cause interruption of power to the driving-machine motor and brake if the connecting means between pallets break. E. The entrance to and exit from a moving treadway shall be provided with a threshold plate which shall have teeth and be adjusted so that the teeth are below the treadway. F. An enclosed fused disconnect switch or a circuit breaker arranged to disconnect the power supply to the moving walk shall be provided in the space where the controller is located. G. If the balustrade covers the edge of the treadway the clearance between the top surface of the treadway and the underside of the balustrade shall not exceed one-fourth inch (1/4"). Where skirt panels are used the horizontal clearance on either side of the treadway and the adjacent skirt panel shall be not more than one-fourth inch (1/4"). H. A stop switch shall be provided in each machinery space where means of access to the space is provided. The switch when opened shall cause electrical power to be removed from the driving-machine motor and brake. The switch shall be of the manually operated type, and shall be marked “STOP.” I. Hand or finger guards shall be provided at the point handrails enter the balustrade. J. All balustrades shall be smooth and free of rough surfaces. All screws shall be flush or oval head. Screw heads shall be smooth and free of burrs. K. On pallet type treadways adjacent ends of the pallets shall not vary in elevation more than one-sixteenth inch (1/16"). The distance between pallets shall not exceed five thirty-seconds inch (5/32"). L. All repairs and alterations shall comply with ASME A17.1, 1996 edition. (U) Existing Vertical and Inclined Platform Lifts. 1. Existing vertical and inclined platform lifts shall meet the requirements of ASME A17.1, 1984 edition, Part 20. (V) Existing Manlifts. 1. Existing manlifts shall be inspected per the requirements of ASME A90.1, 1997 edition. AUTHORITY: section 701.355, RSMo 2016.* Original rule filed Aug. 26, 1998, effective July 1, 1999. Amended: Filed Aug. 17, 2000, effective Feb. 28, 2001. Emergency amendment filed April 30, 2001, effective May 10, 2001, expired Nov. 5, 2001. Amended: Filed April 30, 2001, effective Oct. 30, 2001. Amended: Filed Dec. 16, 2002, effective June 30, 2003. Amended: Filed June 14, 2004, effective Dec. 30, 2004. Amended: Filed Dec. 4, 2006, effective May 30, 2007. Amended: Filed Oct. 16, 2019, effective April 30, 2020. *Original authority: 701.355, RSMo 1994.