Part 5 applies to special application elevators as specified in the following requirements:
(a) acrylics, 6 mm (0.250 in.)
(b) laminated glass, 9.5 mm (0.375 in.)
(c) wired glass, 6 mm (0.250 in.)
(a) a minimum of 610 mm × 610 mm × 2 134 mm (24 in. × 24 in. × 84 in.) high
(b) a minimum of 610 mm × 1 220 mm × 1 220 mm (24 in. × 48 in. × 48 in.)
The refuge space shall be clear of the car and counterweight resting on their fully compressed buffers. This space shall be located to either side of, or toward the downhill end of, the pit in the direction of travel.
Requirement 2.6 applies, except that where it states "below the hoistway," it shall mean "beyond the bottom terminal in the direction of travel."
(a) Where 2.6.1 states "underneath," it shall refer to the location stated in 5.1.6.
(b) Where 2.6.2 states "underneath," it shall refer to the location stated in 5.1.6.
(a) the means of access provides equivalent safety to that provided by 2.12.7
(b) if the means of access includes entrance through the hoistway guarding, it is locked under Group 1 Security (see 8.1) and is equipped with a contact meeting the requirements of 18.104.22.168
(a) be of the hinged type
(b) open only into the car
(c) extend from the floor or base moulding to a clear height of not less than 1 524 mm (60 in.) and shall provide a clear width of not less than 356 mm (14 in.) when the door is open
(d) be provided with a locking means with a nonremovable handle that can be opened only from the exterior of the car. The device shall be permitted to be openable from the interior of the car by use of a special key, which shall be of Group 1 Security (see 8.1).
(e) be provided with an electric contact, which shall not permit the car to start or run, except under inspection conditions as provided for in 22.214.171.124 and 126.96.36.199. The contact shall conform to the following:
(1) it shall not be accessible from the inside of the car
(2) it shall be positively opened by a lever or other device attached to and operated by the door
(3) the contacts shall be maintained in the open position by the action of gravity or by a restrained compression spring, or both, or by positive mechanical means
(f) be of the same material and construction as required for the car enclosure.
Type B safeties shall stop the car with its rated load from governor tripping speed within range of the minimum and maximum stopping distances as determined by the formulas in 8.2.11. Table 188.8.131.52 shows the minimum and maximum stopping distances for various governor tripping speeds, when tested in conformance with 8.10 and 8.11.
Table 184.108.40.206 Minimum and Maximum Stopping Distances at Given Angles From Horizontal
|Rated Speed, |
|Governor Trip, |
|Minimum and Maximum Stopping Distance, mm, at Angle From Horizontal, deg|
|1.50||2.00||711||1 270||580||1 084||410||840||281||655|
|1.75||2.30||930||1 584||760||1 340||537||1 022||368||780|
|2.00||2.55||1 185||1 948||967||1 637||684||1 232||468||923|
|2.25||2.90||1 469||2 355||1 200||1 970||848||1 467||580||1 084|
|2.50||3.15||1 779||2 798||1 453||2 331||1 027||1 723||700||1 259|
|3.00||3.70||2 494||3 820||2 036||3 166||1 440||2 313||985||1 663|
|3.50||4.30||3 329||5 015||2 718||4 141||1 922||3 003||1 315||2 134|
|4.00||4.85||4 285||6 382||3 499||5 257||2 474||3 792||1 692||2 674|
|Rated Speed, |
|Governor Trip, |
|Minimum and Maximum Stopping Distance, in., at Angle From Horizontal, deg|
(b) Type A safeties that develop horizontal retardations exceeding 2.46 m/s2 (8.05 ft/s2) shall not be used on inclined elevators.
(a) Type C safeties that develop horizontal retardations exceeding 2.46 m/s2 (8.05 ft/s2) shall not be used on inclined elevators.
(b) The oil buffers shall conform to all requirements specified in 2.22 for oil buffers, except that the stroke shall be based on governor tripping speed and on an average horizontal retardation not exceeding 2.46 m/s2 (8.05 ft/s2).
Fig. 220.127.116.11 Vertical and Horizontal Components of Velocity
|a||= angle of travel above horizontal|
|V||= linear velocity of elevator in direction of travel|
|Vh||= horizontal component of velocity|
|Vv||= vertical component of velocity|
|SI Units||Imperial Units|
|Rated Speed, |
|Minimum Stroke, mm, at Angle From Horizontal, deg||Rated Speed, |
|Minimum Stroke, in., at Angle From Horizontal, deg|
|2.25||1 360||1 220||996||704||482||450||53.56||48.02||39.21||27.72||18.96|
|2.50||1 679||1 506||1 229||869||595||500||66.12||59.28||48.40||34.23||23.41|
|3.00||2 418||2 168||1 770||1 252||856||600||95.21||85.37||69.70||49.29||33.71|
|3.50||3 292||2 951||2 410||1 704||1 166||700||129.60||116.19||94.87||67.08||45.89|
|4.00||4 299||3 855||3 147||2 226||1 522||800||169.27||151.76||123.91||87.62||59.93|
Requirement 18.104.22.168 does not apply to end-loading inclined elevators. The buffer shall be compressed to within the overtravel distance when the car is level with the terminal landing. Each buffer shall be provided with a switch that shall prevent operation of the elevator by means of the normal operating device in the direction of travel towards that buffer unless it has returned to at least 90% of its stroke.
(a) They shall be designed so as to function without creating any pinching or shearing hazards.
(b) They shall be equipped with return switches conforming to 22.214.171.124.1 and 126.96.36.199.3, which shall prevent the operation of the car in the direction of travel toward that terminal unless the retractable sill returns to its normal position.
The forces and loads covered by 2.28.1(b), (c), and (f) shall be calculated based on the angle of inclination from the horizontal.
(a) Requirement 188.8.131.52.1. If a floor is provided, it shall be permitted to be of wood.
(b) Requirement 184.108.40.206 does not apply. The floor shall be designed in accordance with other floors in the building. Where the machine is to be supported by the machine room floor, the floor shall be designed in accordance with 2.9.4 and 2.9.5.
(c) Requirement 220.127.116.11. The floor shall be permitted to be of wood.
(a) It shall hold the car at a height of not less than 900 mm (35 in.) nor more than 2 000 mm (79 in.) above the pit floor and not less than 300 mm (12 in.) above the bottom landing sill, as measured from the underside of the car platform.
(b) The means shall be so designed and constructed as to stop and hold the car at governor tripping speed with rated load in the car.
(d) If the means does not automatically activate when the lowest hoistway door is opened with the car not at the landing
(1) it shall be capable of being operated without complete bodily entry into the pit.
(2) a sign conforming to ANSI Z535.2, ANSI Z535.4, or CAN/CSA-Z321, whichever is applicable (see Part 9), shall be conspicuously displayed inside the hoistway, which shall include a warning that there is an insufficient bottom car clearance and instructions for operating the device. The letters shall be not less than 25 mm (1 in.) in height. The sign shall be made of a durable material and shall be securely fastened.
(a) When the car has reached its maximum upper movement, no part of the car or any equipment attached thereto, other than as permitted by 18.104.22.168.4(b), shall strike the overhead structure or any part of the equipment located in the hoistway.
(b) Nonremovable means, independent of the brake, shall be provided to mechanically and electrically prevent upward movement of the car to provide an area above the car for maintenance and inspection, conforming to the following:
(1) The means shall prevent upward movement of the car to provide a refuge space complying with 22.214.171.124.5.
(2) The means shall be so designed and constructed as to stop upward movement of the car at governor-tripping speed with and without rated load in the car.
(4) A sign conforming to ANSI Z535.2, ANSI Z535.4, or CAN/CSA-Z321, whichever is applicable (see Part 9), shall be conspicuously displayed inside the hoistway, which shall include a warning that there is an insufficient top car clearance and instructions for operating the means. The letters shall be not less than 25 mm (1 in.) in height. The sign shall be made of a durable material and shall be securely fastened.
(5) The means shall be capable of being operated without complete bodily entry into the hoistway.
(6) The force to actuate the means shall not require more than 90 N (20 lbf).
(7) The top-of-car operating device shall not allow car movement until the means is actuated.
(a) An unobstructed horizontal area of not less than 0.5 m2 (5.4 ft2) shall be provided on top of the car enclosure for refuge space. It shall measure not less than 600 mm (24 in.) on any side. This area shall be permitted to include the space utilized for the top emergency exit [see 126.96.36.199.1(f)]. The minimum vertical distance in the refuge area between the top of the car enclosure and the overhead structure or other obstruction shall be not less than 1 100 mm (43 in.) when the car has reached its maximum upward movement.
(b) In any area outside the refuge space where the vertical clearance between the top of the car enclosure and the overhead structure or other obstruction is less than specified in 188.8.131.52.5(a), the top of the car enclosure shall be clearly marked. The marking shall consist of alternating 100 mm (4 in.) diagonal red and white stripes. In addition, a sign with the words "DANGER LOW CLEARANCE" shall be prominently posted on the crosshead and be visible from the entrance. The sign shall conform to ANSI Z535.2 or CAN/CSA-Z321, whichever is applicable (see Part 9). The sign shall be of such material and construction that the letters and figures stamped, etched, cast, or otherwise applied to the face shall remain permanently and readily legible.
NOTE: See 184.108.40.206.2 for floors of machine room and machinery spaces over or at the top of hoistway.
(a) Requirement 2.11.2. Entrances shall be of the horizontal slide or single section swing type.
(b) Requirement 220.127.116.11 does not apply.
(c) Requirement 2.11.12 does not apply.
(d) Requirement 18.104.22.168 does not apply.
(e) Requirement 22.214.171.124 does not apply.
(b) Requirement 126.96.36.199(a). Truck zoning devices are not permitted.
(c) Requirement 2.12.3 does not apply.
(d) Requirement 188.8.131.52.3(b). The car cannot be operated at a speed greater than 0.15 m/s (30 ft/min).
(a) Requirement 2.13.1 does not apply. Both car and hoistway doors shall be of the horizontally sliding type or a power-operated swinging hoistway door with a power-operated horizontally sliding car door shall be permitted. Power operation of accordion or bifold type car doors shall be permitted.
(b) Vertically sliding doors shall not be permitted.
(a) Requirement 184.108.40.206. Cars shall not have more than one compartment.
(c) Requirement 220.127.116.11.1(c) does not apply. Equipment mounted to the car for freight handling shall not be permitted.
(d) Requirement 2.14.3 does not apply.
(f) Requirement 18.104.22.168 does not apply. Doors shall be of the horizontally sliding, accordion, or bifold type and so arranged to reduce the possibility of pinching. Material shall conform to 22.214.171.124.
(g) Requirement 126.96.36.199 does not apply.
(h) Requirement 188.8.131.52 does not apply.
(i) Requirement 184.108.40.206 does not apply.
(j) Requirement 220.127.116.11(b) does not apply.
(k) Requirement 18.104.22.168 does not apply. There shall not be more than two entrances to the car.
(a) Requirement 22.214.171.124(b) does not apply. The tripping speed shall not exceed 0.38 m/s (75 ft/min). On the breakage of the suspension means, the safety shall operate without delay and independently of the governor's speed action.
(b) Requirement 2.18.4 does not apply.
(a) Iron (low-carbon steel) or steel wire rope, having the commercial classification "Elevator Wire Rope," or wire rope specifically constructed for elevator use. The wire material for these wire ropes shall be manufactured by the open-hearth or electric furnace process or their equivalent.
(b) Aircraft cable rope of 7 × 19 construction, classified as MIL-DTL-83420M Spec, shall be permitted in those applications where aircraft cable rope is not subjected to crushing pressures, with the following exceptions permitted:
(1) nonjacketed, carbon steel, tin- or zinc-coated (Type 1A) 7 × 19 construction (Section 126.96.36.199 of MIL-DTL-83420M Spec)
(2) identifying color tracer filaments are not required (Section 3.6.2 of MIL-DTL-83420M Spec)
Where guide-rail sections other than those specified in 2.23.3(a) are used
(a) requirement 188.8.131.52 does not apply.
(b) the rail joints shall be designed in accordance with 184.108.40.206 and shall adequately maintain the accuracy of the rail alignment.
(c) the deflections shall comply with 2.23. The allowable deflection of the guide rail shall be limited to prevent the safety device from disengaging the rail during the application of the load.
(a) Sheaves and drums used with "Elevator Wire Rope" [see 220.127.116.11.1(a)] shall be of metal and provided with finished grooves for ropes or shall be permitted to be lined with nonmetallic groove material.
(b) For all "Elevator Wire Rope," the diameter shall not be less than 30 times the diameter of the rope, where used with compensating ropes.
(a) Requirement 2.25.4 does not apply.
(b) If the driving machine is of the winding drum type, a lower final terminal stopping device shall be used in addition to the slack-rope switch, and two independent upper final terminal stopping devices shall be provided. A separate device shall be used to operate the lower final terminal and one upper final terminal stopping device. All final terminal stopping and slackrope devices shall operate independently of one another. The power feed lines to the driving machine and brake shall be opened by one or both of the upper final terminal stopping devices and either the slack-rope switch or the lower terminal stopping device, or both.
(a) Requirement 18.104.22.168 does not apply.
(b) Requirement 22.214.171.124 does not apply.
(c) Requirement 126.96.36.199 does not apply.
(d) Requirement 188.8.131.52 does not apply.
(e) Requirement 184.108.40.206 does not apply.
(a) It shall not be accessible from inside the car.
(b) It shall not release the brake.
(c) Upon removal of the device, the car shall not move.
(d) It shall be actuated by mechanical means only.
(b) Requirement 220.127.116.11 does not apply. The bottom car runby shall not be less than 50 mm (2 in.).
(a) the top car runby
Requirements in Section 5.3 apply to elevators installed in or at a private residence. Section 5.3 also applies to similar elevators installed in buildings as a means of access to private residences within such buildings provided the elevators are so installed that they are not accessible to the general public or to other occupants in the building. Elevators conforming to the requirements of Part 2, Part 3, or Sections 4.1, 4.2, or 5.2 are not prohibited from being installed in or at a private residence.
(a) does not open directly into a garage
(b) has continuous-pressure operation
(c) car platform is equipped with a device that, if the platform is obstructed in its downward travel by a force of 18 N (4 lbf) or more applied anywhere at its lower surface, will open an electric contact in the control circuit and thus stop the downward travel of the car within 75 mm (3 in.). The stroke of the device shall be not less than the stopping distance of the platform. This device shall be of a type that will not reset unless it has been returned to its normal position. The elevator shall be permitted to operate in the up direction.
(a) the floor opening at the upper landing is protected by a partial enclosure and gate at least 910 mm (36 in.) high with openings that will reject a ball 25 mm (1 in.) in diameter and the gate is provided with a combination mechanical lock and electric contact
(b) the floor opening is provided with a vertically lifting hatch cover which is automatically raised and lowered vertically by the ascending and descending car, provided this cover meets the following requirements:
(1) It is fitted with guides to ensure its proper seating.
(2) It is designed and installed to sustain a total load of 3.6 kPa (75 lbf/ft2) or 135 kg (300 lb) at any one point.
(3) It is equipped with an electric contact that will prevent the upward travel of the car when a force of 90 N (20 lbf) is placed at any point on the top of the hatch cover.
The locking device shall be of a type that will
(a) either prevent car movement unless the door is locked in the closed position; or
(b) permit the car to start if the door or gate is in the closed position but not locked, provided that the device stops the car if the door or gate fails to lock before the car has moved 150 mm (6 in.) away from the landing. The device shall also prevent the opening of the hoistway door or gate unless the car is within 150 mm (6 in.) of the landing.
The locking device shall conform to 2.12.4.
(a) it shall have a straight vertical face extending below the sill not less than the depth of the zone where the hoistway door is unlocked below the landing sill plus 50 mm (2 in.)
(b) it shall extend not less than the width of the clear car opening exposed to the landing sill
(c) it shall be securely braced and fastened in place to withstand a force of 670 N (150 lbf) applied horizontally over an area 100 mm × 100 mm (4 in. × 4 in.) in the center of the guard without permanent displacement or deformation
(a) Car Enclosure Required. Except at entrances, cars shall be enclosed on all sides and on the top. The enclosure shall be constructed of solid or of openwork material that will reject a ball 13 mm (0.5 in.) in diameter.
(1) if of glass, it shall meet the requirements of 18.104.22.168
(2) if of plastic or acrylic, it shall meet the requirements of ANSI Z97.1, 16 CFR Part 1201, or CAN/CGSB-12.1, CAN/CGSB-12.11, and CAN/CGSB-12.12, whichever is applicable
(e) Number of Compartments. The car shall not have more than one compartment.
Collapsible car gates shall be of a design that, when fully closed (extended position), will reject a ball 75 mm (3 in.) in diameter.
(a) Power Operation of Car Doors and Gates. Power opening shall be permitted for car doors and gates, and shall conform to 22.214.171.124 and 2.13.6. Power closing shall be permitted for car doors and gates, and shall conform to 2.13.3 through 2.13.6.
(b) Car Door or Gate Locking Devices. Where the hoistway enclosure is not continuous for the full travel of the car, the car door or gate shall be provided with a mechanical lock that will lock the car door or gate if the car is more than 150 mm (6 in.) away from a landing.
The design of the car door or gate electric contacts shall be such that for a sliding door or gate, the car cannot move unless the door or gate is within 50 mm (2 in.) of the closed position. If the door or gate swings outward to open, the car door or gate must be closed and locked before the car can move.
(b) Material Permitted. Car frames shall be made of metal.
(d) Use of Cast Iron. Cast iron shall not be used in any member other than for guides or guide shoe brackets.
(e) Location of Guiding Means. Primary guiding means shall be attached to the car frame.
(a) Construction. Platforms shall be of non-perforated metal or wood. If constructed of wood, they shall be laminated.
Platforms shall be supported by a platform frame or formed metal support pan attached to the car frame. Platforms and platform frame assemblies shall have a safety factor of 5.
(b) Platform Guards (Aprons). Where the elevator is equipped with a two-way leveling device, the entrance side(s) of the platform shall be provided with a guard conforming to 2.15.9, except as modified by the following:
(1) Requirement 126.96.36.199 does not apply. The platform guard shall have a straight vertical face, extending below the floor surface of the platform not less than the depth of the zone where the hoistway door is unlocked above the landing sill plus 50 mm (2 in.). The platform guard shall not strike the pit floor or any obstruction when the elevator is at its lowest point of travel.
(a) For net platform areas up to and including 1.1 m2 (12 ft2), the rated load shall be not less than 195 kg/m2 (40 lb/ft2) or 159 kg (350 lb), whichever is greater.
(b) For net platform areas greater than 1.1 m2 (12 ft2), the rated load shall be based upon 305 kg/m2 (62.5 lb/ft2).
(a) Where guide-rail sections other than those specified in 2.23.3(a) are used, the application of safety stopping forces shall not cause deformation of the guide-rail section upon whose dimensional stability the stopping capability of the safeties is dependent.
(b) Where the car safety is of the rack-and-pinion type, it shall conform to 4.1.9.
(b) the size, material, and construction of the governor rope
(d) manufacturer's name or trademark
(e) statement "DO NOT LUBRICATE GOVERNOR ROPE"
(a) Suspension means shall be not less than two wire ropes or two steel roller-type chains conforming to ASME B29.1.
(b) Aircraft cable rope of 7 × 19 construction, classified as Mil Spec 83420, shall be permitted in those applications where aircraft cable rope is not subjected to crushing pressures. The following exceptions to Mil Spec 83420 are permitted:
(1) nonjacketed carbon steel, tin-, or zinc-coated (Type 1-A) 7 × 19 construction (Section 3.2.4 of Mil Spec 83420)
(2) identifying color tracer filaments are not required (Section 3.5.2 of Mil Spec 83420)
When the car and counterweight are suspended by steel ropes and the driving means is an endless steel roller-type chain, the factor of safety of such chain with the rated load in the car shall be not less than 8 based on the ultimate tensile strength.
(a) Counterweights shall run in guide rails.
(b) Where a car counterweight is used, it shall not be of sufficient weight to cause slackening of any rope during acceleration or retardation of the car.
(c) The counterweight sections, whether carried in a frame or not, shall be fastened together and shall also be secured to prevent shifting by an amount that will reduce the running clearance to less than 19 mm (0.75 in.) between the counterweight and hoistway.
(a) Counterweight on Cars Operating Through Hatch Covers. If a car operates through a hatch cover, the counterweight runway shall be enclosed throughout its height.
(b) Counterweight Coming Down to Floors or Passing Floors or Stairs. Where the counterweight runway comes down to a floor or passes floors or stairs, it shall be guarded to a height of at least 2 130 mm (84 in.) above the floor or the stair treads by a solid or openwork enclosure. Openwork enclosures shall reject a ball 13 mm (0.5 in.) in diameter.
(c) Access to Enclosed Counterweights and Ropes. Access shall be provided for inspection, maintenance, and repair of an enclosed counterweight and its ropes. Doors on the counterweight enclosure shall be self-closing and self-locking and openable from the outside only with a suitable key. If the enclosure is of such size that the door can be closed when the enclosure is occupied by a person, the door shall be easily openable from the inside without the use of a key or other instrument. A stop switch conforming to 188.8.131.52 shall be located adjacent to and inside the opening and operable without entering the enclosure.
(a) Spring buffers shall be so designed and installed that they will not be fully compressed when struck by the car with its rated load or by the counterweight traveling at 125% of the rated speed, or at governor tripping speed where a governor-operated safety is used.
(c) Elastomeric bumpers capable of absorbing the energy of a fully loaded car shall be permitted to be used. The average deceleration shall be less than 9.81 m/s2 (32.2 ft/s2) with any load between 61 kg (135 lb) and rated load.
(a) Securing of Machinery Beams and Types of Supports. All machinery and sheaves shall be so supported and secured as to prevent any part from becoming loose or displaced.
Beams supporting machinery shall be of steel, sound timber, or reinforced concrete.
(b) Overhead Beams and Their Supports. Overhead beams and their supports shall be designed for not less than the sum of the following:
(1) the load resting on the beams and their supports, which shall include the complete weight of the machine, sheaves, controller, and any other equipment supported thereon
(2) the sum of the tension on all suspension ropes or chains times 2
(c) Factor of Safety for Overhead Beams and Supports. The factor of safety for overhead beams and supports based on ultimate strength of material shall be not less than 5 for steel, and 6 for timber and reinforced concrete.
(a) Types of Driving Means. The driving means shall be one of the following types:
(2) winding drum (see 184.108.40.206.3)
(4) roped-hydraulic (see 5.3.2)
(5) screw machine (see 220.127.116.11.4)
(6) chain drive
(7) chain-hydraulic (see 5.3.2)
(8) rack-and-pinion, in jurisdictions enforcing NBCC
(b) Material for Sheaves and Drums and Minimum Diameter
(1) Winding drums, traction sheaves, and overhead and deflecting sheaves shall be of cast iron or steel and the pitch diameter shall be not less than one of the following:
(a) 30 times the diameter of the wire suspension means
(3) The factor of safety, based on the static load (the rated load plus the weight of the car, ropes, counterweights, etc.) to be used in the design of the driving machine and sheaves shall be not less than 8 for wrought iron and steel, and 10 for cast iron and cast steel and other metals.
(c) Fastening of Driving Machines and Sheaves to Underside of Overhead Beams
(1) Overhead driving machines or sheaves shall not be fastened to the underside of the supporting beams, except for idlers or deflecting sheaves including their guards and frames.
(2) Cast iron in tension shall not be used for supporting idler and deflecting sheaves where they are hung beneath the beams.
(d) Fastenings Transmitting Load. Fasteners transmitting load shall conform to 2.24.4.
(e) Friction Gearing, Clutch Mechanisms, or Couplings. Friction gearings or clutch mechanisms shall not be used for connecting the drum or drive sheave to the main drive gear. Couplings shall not be used for connecting the output shaft to the main drive gear.
(f) Use of Cast Iron in Gears. Worm gearing having cast iron teeth shall not be used.
(h) Driving-Machine Brakes. Driving machines, except hydraulic driving machines, shall be equipped with electrically released, mechanically applied brakes conforming to 2.24.8. The operation of the brake shall conform to 2.26.8.
(1) It shall not be accessible from inside the car.
(2) It shall not release the brake.
(3) Upon removal of the device, the car shall not move.
(4) It shall be actuated by mechanical means only.
(j) Car Top Mounted Machine or Controller. Where the machine or its controls are located on top of the car
(1) they shall be protected by a solid, noncombustible enclosure
(2) the car top enclosure shall be designed and installed in conformance with 18.104.22.168
(a) Suspension Means Retainers. Suspension means retainers shall be continuous over not less than two-thirds of the arc of contact between the suspension means and its sheave or drum and shall be so located that not more than one-sixth of the arc of contact is exposed at each end of the retainer. For double-wrap traction applications the arc of contact for sheaves or drums shall be that length of arc that is uninterrupted by the entry/exit of the suspension means leading to/from the car or counterweight.
(b) Suspension Means Restraints. One suspension means restraint, where the arc of contact is 30 deg or less, shall be located at the midpoint of the arc of contact; or, where the arc of contact exceeds 30 deg, suspension means restraints shall be provided at intervals not exceeding 30 deg of arc along the arc of contact and at each end of the arc of contact.
(b) Upper and lower final terminal stopping devices operated by the car to remove power from the motor and the brake shall be provided. They shall be set to stop the car after it travels past the normal terminal stopping device and before an obstruction is struck.
(c) If the driving machine is of the winding drum or sprocket and chain-suspension type
(2) driving-machine-operated final terminal stopping devices are not required when a lower final terminal stopping device is used in addition to the slackrope switch, and two independent upper final terminal stopping devices are provided. A separate device shall be used to operate the lower final terminal and one upper final terminal stopping devices. All final terminal stopping and slack-rope devices shall operate independently of one another. The power feed lines to the driving machine and brake shall be opened by one or both of the upper final terminal stopping devices and either the slack-rope switch or the lower terminal stopping device, or both.
(d) Terminal stopping switches shall conform to 2.25.1.
(a) The completion or maintenance of an electric circuit shall not be used neither to interrupt the power to the elevator driving machine or brake at the terminal landings, nor to stop the car when any electrical protective device operates.
(c) The occurrence of a single ground or the failure of any single magnetically operated switch, contactor, or relay, or the failure of any single solid-state device, or a software system failure, shall not
(1) render any electrical protective devices ineffective
(d) If an instantaneous reversible motor is not used, a protective device or circuit shall be provided to prevent the motor from continuing in the same direction if the reversing control is actuated.
(a) All electrical equipment and wiring shall conform to NFPA 70 or CSA-C22.1, whichever is applicable.
22.214.171.124.8 Slack-Rope and Slack-Chain Devices for Winding Drum and Roller-Chain-Type Driving Machines
Elevators with roller-chain suspension shall be provided with a slack-chain device that will remove power from the motor and brake if the car is obstructed in its descent and the suspension means slacken. This device need not be of the manually reset type if the chain sprockets are guarded to prevent the chain from becoming disengaged from the sprockets.
Machinery and equipment for hydraulic elevators shall conform to 5.3.2.
(a) low pressure switch when required by 126.96.36.199.2
(c) platform switch when required by 188.8.131.52.1
(d) hatch cover switch when required by 184.108.40.206.3(c)
Requirement 5.4 applies to inclined elevators installed in or at a private residence. Requirement 5.4 also applies to similar elevators installed in buildings as a means of access to private residences within such buildings, provided the inclined elevators are so installed that they are not accessible to the general public or to other occupants in the building. Inclined elevators conforming to the requirements of Section 5.1 are not prohibited from being installed in or at a private residence.
If the car sides extend less than 1 825 mm (72 in.) above the floor of the car, there shall be no obstruction along the runway, within the arc formed by a 600 mm (24 in.) radius whose center is the outer corner of the top rail of the car enclosure.
When solid guards are installed on the obstruction in both directions of travel, which project at least 350 mm (14 in.) in line with the direction of travel, the running clearance shall be permitted to be reduced to 175 mm (7 in.). The exposed edge of the guard shall be rounded to eliminate shear hazards.
(a) if of glass, meet the requirements of 220.127.116.11
(b) if of plastic, it shall meet the requirements of ANSI Z97.1, 16 CFR Part 1201, or CAN/CGSB-12.1, CAN/CGSB-12.11, and CAN/CGSB-12.12, whichever is applicable
(b) Type A safeties shall operate as required by 18.104.22.168.
(c) Type C safeties shall operate as required by 22.214.171.124.
Counterweight guiding and construction shall conform to 126.96.36.199.
The material used shall be of a type that will resist deterioration or be so treated as to resist deterioration.
Car and counterweight guide, track, and track supports and fastenings shall conform to 188.8.131.52.
(a) Requirement 184.108.40.206. Hoistways are not required to be enclosed above the top landing.
(b) Requirement 220.127.116.11 does not apply.
(c) Requirement 18.104.22.168 does not apply.
(d) Requirement 2.1.3 does not apply.
Where no car top is provided, they shall conform to 2.4.1 through 2.4.4 and 2.4.9. When the car has reached its maximum upward movement, no equipment shall strike the overhead structure or other obstructions.
On elevators with vertical lifting covers, there shall be a clearance of not less than 600 mm (24 in.) between the top of the cover and any obstruction vertically above it when the car has reached its maximum upward movement.
(a) a horizontal area 600 mm × 1 200 mm (24 in. × 48 in.), with a height of 600 mm (24 in.)
(b) a horizontal area 450 mm × 900 mm (18 in. × 36 in.), with a height of 1 070 mm (42 in.)
For sidewalk elevators with adjacent openings, the maximum clearance required by 22.214.171.124 shall be permitted to be increased on the side where the overhead sheaves are located, provided that in such cases this clearance shall not be greater than that required for the installation of the sheaves or sheave beams plus running clearance of not more than 25 mm (1 in.).
(a) The clear opening in a sidewalk that is accessible to the general public when the sidewalk door or cover is open shall be such that the sidewalk permits a minimum 1 200 mm (48 in.) wide unobstructed pedestrian path, which is not normally accessible to vehicular traffic.
(b) Hoistways shall not be located either wholly or partially in front of any entrance to a building.
(c) The side of the door opening nearest to any building wall or other obstruction shall be less than or equal to 100 mm (4 in.), or greater than 914 mm (36 in.), from the wall or obstruction.
(d) Horizontal openings in sidewalks or other areas exterior to the building shall be protected by hinged metal doors or vertically lifting covers having a nonslip upper surface. Such doors or covers shall not be used where the hoistway is located inside the building. Doors or covers shall be of sufficient strength to safely support a static load of not less than 1 460 kg/m2 (300 lb/ft2), uniformly distributed.
(e) When in the closed position, doors shall be flush with the adjacent sidewalk or other surface.
(g) All openings between sidewalk door panels and frames shall be provided with gutters to collect rainwater. Their gutters shall be piped rigidly to a discharge point exterior to the hoistway and pit or to the sump pit when provided and designed in accordance with 126.96.36.199.
(h) When subject to vehicular traffic, the doors or covers shall be designed to safely support the loads likely to be imposed on them.
(a) The line of the hinges shall be at right angles to the building wall.
(c) The doors shall be opened by the ascending car and shall be self-closing as the car descends, and shall be kept in the closed position when the car is not at the top landing, except as provided for in 188.8.131.52.3(d).
(d) The doors shall be permitted to be held or fastened in the open position when the car is not at the top landing, provided self-closing hinged metal screen panels, which will reject a ball 50 mm (2 in.) in diameter and which will support a static load of not less than 1136 kg (300 lb) applied on any area 600 mm (24 in.) on a side and not less than 68 kg (150 lb) applied at any point, are installed directly below the watertight sidewalk doors. Screen panels shall be opened and closed automatically by the ascending and descending car and shall always be closed when the car is not at the top landing.
(e) Stops shall be provided to prevent the doors from opening more than 90 deg from their closed position.
(a) The covers shall be raised and lowered vertically by the ascending and descending car and shall not be held or fastened in the open position when the car is not at the top landing.
(b) Recesses or guides, which will securely hold the cover in place on the stanchions, shall be provided on the underside of the cover.