California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 7 - General Industry Safety Orders › Group 1 - General Physical Conditions and Structures › Article 6 - Powered Platforms and Equipment for Building Maintenance › Appendix D to Article 6

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Existing Installations(Mandatory)
Use of the Appendix
Appendix D sets out the mandatory building and
						  equipment requirements for applicable permanent installations completed after
						  September 29, 1974, and no later than July 1, 1993 which are exempt from
						  Sections 3292(a), (b)(1),
						  (c),
						  3293,
						  3294, and
						  3295 of Article 6. The requirements
						  in Appendix D are essentially the same as unrevised building and equipment
						  provisions which previously were designated Article 6 and which were effective
						  on July 16, 1976. (Title 24, Part 2, Section
						  2-8510(a).)
NOTE: All existing installations subject to this
						  appendix shall also comply with Sections
						  3296,
						  3297,
						  3298,
						  3299 and Appendix C of Article
						  6.
(a) Definitions Applicable to this Appendix.
Angulated Roping. A system of platform suspension in
						  which the upper wire rope sheaves or suspension points are closer to the plane
						  of the building face than the corresponding attachment points on the platform,
						  thus causing the platform to press against the face of the building during its
						  vertical travel.
ANSI. American National Standards Institute.
Babbitted Fastenings. The method of providing wire rope
						  attachments in which the ends of the wire strands are bent back and are held in
						  a tapered socket by means of poured molten babbitt metal.
Brake-Disc Type. A brake in which the holding effect is
						  obtained by frictional resistance between one or more faces of discs keyed to
						  the rotating member to be held and fixed discs keyed to the stationary or
						  housing member (pressure between the discs being applied axially).
Brake-Self-Energizing Band Type. An essentially
						  unidirectional brake in which the holding effect is obtained by the snubbing
						  action of a flexible band wrapped about a cylindrical wheel or drum affixed to
						  the rotating member to be held, the connections and linkages being so arranged
						  that the motion of the brake wheel or drum will act to increase the tension or
						  holding force of the band.
Brake-Shoe Type. A brake in which the holding effect is
						  obtained by applying the direct pressure of two or more segmental friction
						  elements held to a stationary member against a cylindrical wheel or drum
						  affixed to the rotating member to be held.
Building Face Rollers. A specialized form of guide
						  roller designed to contact a portion of the outer face or wall structure of the
						  building, and to assist in stabilizing the operators' platform during vertical
						  travel.
Continuous Pressure. Operation by means of buttons or
						  switches, any one of which may be used to control the movement of the working
						  platform or roof car, only as long as the button or switch is manually
						  maintained in the actuating position.
Control. A system governing starting, stopping,
						  direction, acceleration, speed, and retardation of moving members.
Controller. A device or group of devices, usually
						  contained in a single enclosure, which serves to control in some predetermined
						  manner the apparatus to which it is connected.
Electrical Ground. A conducting connection between an
						  electrical circuit or equipment and the earth, or some conducting body which
						  serves in place of the earth.
Guide Roller. A rotating, bearing-mounted, generally
						  cylindrical member, operating separately or as part of a guide shoe assembly,
						  attached to the platform, and providing rolling contact with building
						  guideways, or other building contact members.
Guide Shoe. An assembly of rollers, slide members, or
						  the equivalent, attached as a unit to the operators' platform, and designed to
						  engage with the building members provided for the vertical guidance of the
						  operators' platform.
Interlock. A device actuated by the operation of some
						  other device with which it is directly associated, to govern succeeding
						  operations of the same or allied devices.
Operating Device. A pushbutton, lever, or other manual
						  device used to actuate a control.
Powered Platform. Equipment to provide access to the
						  exterior of a building for maintenance, consisting of a suspended
						  power-operated working platform, a roof car, or other suspension means, and the
						  requisite operating and control devices.
Rated Load. The combined weight of employees, tools,
						  equipment, and other material which the working platform is designed and
						  installed to lift.
Relay, Direction. An electrically energized contactor
						  responsive to an initiating control circuit, which in turn causes a moving
						  member to travel in a particular direction.
Relay, Potential for Vertical Travel. An electrically
						  energized contactor responsive to initiating control circuit, which in turn
						  controls the operation of a moving member in both directions. This relay
						  usually operates in conjunction with direction relays, as covered under the
						  definition "relay, direction."
Roof Car. A structure for the suspension of a working
						  platform. providing for its horizontal movement to working positions.
Roof-Powered Platform. A powered platform having the
						  raising and lowering mechanism located on a roof car.
Self-Powered Platform. A powered platform having the
						  raising and lowering mechanism located on the working platform.
Traveling Cable. A cable made up of electrical or
						  communication conductors or both, and providing electrical connection between
						  the working platform and the roof car or other fixed point.
Weatherproof. Equipment so constructed or protected
						  that exposure to the weather will not interfere with its proper
						  operation.
Working Platform. The suspended structure arranged for
						  vertical travel which provides access to the exterior of the building or
						  structure.
Yield Point. The stress at which the material exhibits
						  a permanent set of 0.2 percent.
Zinced Fastenings. The method of providing wire rope
						  attachments in which the splayed or fanned wire ends are held in a tapered
						  socket by means of poured molten zinc. (Title 24, Part 2, Section
						  2-8510(b).)
(b) General Requirements.
(1) Design requirements. All powered platform
						  installations for exterior building maintenance completed as of September 29,
						  1974, but no later than July 1, 1993, shall meet all of the design,
						  construction and installation requirements of Part II and III of the "American
						  National Standard Safety Requirements for Powered Platforms for Exterior
						  Building Maintenance. ANSI A120.1-1970", which is hereby incorporated by
						  reference, and of this appendix. All powered platform installations installed
						  prior to September 29, 1974 shall be maintained as required by Appendix D.
						  References shall be made to appropriate parts of ANSI A120.1-1970 for detail
						  specifications for equipment and special installations. (Title 24, Part 2,
						  Section 2 -
						  8511(b).)
(2) Limitation. The requirements of this appendix apply
						  only to electric powered platforms. It is not the intent of the appendix to
						  prohibit the use of other types of power. Installation of powered platforms
						  using other types of power is permitted, provided such platforms have adequate
						  protective devices for the type of power used, and otherwise provided for
						  reasonable safety of life and limb to users of equipment and to others who may
						  be exposed. (Title 24, Part 2, Section
						  2-8511(c).)
(3) Types of Powered Platforms. (A) For the purpose of
						  applying this appendix, powered platforms are divided into two basic types.
						  Type F and Type T. (Title 24, Part 2, Section
						  2-8511(d)1.)
(B) Powered platforms designated as Type F shall meet
						  all the requirements in Part II of the ANSI A 120.1-1970. American National
						  Standard Safety Requirements for Powered Platforms for Exterior Building
						  Maintenance, which is hereby incorporated by reference. A basic requirement of
						  Type F equipment is that the work platform is suspended by at least four wire
						  ropes and designed so that failure of any one wire rope will not substantially
						  alter the normal position of the working platform. Another basic requirement of
						  Type F equipment is that only one layer of hoisting rope is permitted on
						  winding drums. Type F powered platforms may be either roof-powered or
						  self-powered. (Title 24, Part 2, Section
						  2-8511(d)2.)
(C) Powered platforms designated as Type T shall meet
						  all the requirements in Part III of ANSI A120.1-1970, American National
						  Standard Safety Requirements for Powered Platforms for Exterior Building
						  Maintenance except for safety belts and safety lines, which are provided for in
						  subparagraph (e) of this appendix. A basic requirement of Type T equipment is
						  that the working platform is suspended by at least two wire ropes. Failure of
						  one wire rope would not permit the working platform to fall to the ground, but
						  would upset its normal position. The employer shall require employees working
						  on Type T equipment to wear a safety belt or body harness as required by
						  paragraph (e) of this appendix. Type T powered platforms may be either
						  roof-lowered or self-powered. (Title 24. Part 2. Section
						  2-8511(d)3.)
(D) The requirements of this section apply to powered
						  platforms with winding drum type hoisting machines. It is not the intent of
						  this section to prohibit powered platforms using other types of hoisting
						  machines, traction drum hoisting machines, air powered machines, hydraulic
						  powered machines, and internal combustion machines. Installation of powered
						  platforms with other types of hoisting machines is permitted, provided adequate
						  protective devices are used, and provided reasonable safety of life and limb to
						  users of the equipment and to others who may be exposed is assured. (Title 24,
						  Part 2, Section
						  2-8511 -(c)2.)
(E) Both Type F and Type T powered platforms shall
						  comply with the requirements of Appendix C of this standard.
(c) Type F Powered Platforms
(1) Roof Car, General.
(A) A roof car shall be provided whenever it is
						  necessary to move the working platform horizontally to working or storage
						  positions.
(B) The maximum rated speed at which a power traversed
						  roof car may be moved in a horizontal direction shall be 50 feet per minute.
						  (Title 24. Part 2. Section
						  2-8512(a).)
(2) Movement and Positioning of Roof Car.
(A) Provisions shall be made to protect against having
						  the roof car leave the roof or enter roof areas not designed for travel.
(B) The horizontal motion of the roof cars shall be
						  positively controlled so as to insure proper movement and positioning of the
						  roof car.
(C) Roof car positioning devices shall be provided to
						  insure that the working platform is placed and retained in proper position for
						  vertical travel and during storage.
(D) Mechanical stops shall be provided to prevent the
						  traversing of the roof car beyond its normal limits of travel. Such stops shall
						  be capable of withstanding a force equal to 100 percent of the inertial effect
						  of the roof car in motion with traversing power applied.
(E)1. The operating device of a power-operated roof car
						  for traversing shall be located on the roof car, the working platform, or both,
						  and shall be of the continuous pressure weatherproof electric type. If more
						  than one operating device is provided, they shall be so arranged that
						  traversing is possible only for one operating device at a time.
2. The operating device shall be so connected that it
						  is not operating until:
A. The working platform is located at its uppermost
						  position of travel and is not in contact with the building face or fixed
						  vertical guides in the face of the building; and
B. All protective devices and interlocks are in a
						  position for traversing. (Title 24, Part 2, Section
						  2-8512
						  (b).)
(3) Roof Car Stability. Roof car stability shall be
						  determined by either subparagraph (c)(3)(A) or (B) of this appendix, whichever
						  is greater.
(A) The roof car shall be continuously stable,
						  considering overturning moment as determined by 125 percent rated load, plus
						  maximum dead load and the prescribed wind loading.
(B) The roof car and its anchorages shall be capable of
						  resisting accidental over-tensioning of the wire ropes suspending the working
						  platform and this calculated value shall include the effect of one and one-half
						  times the value. For this calculation, the simultaneous effect of one-half wind
						  load shall be included, and the design stresses shall not exceed those referred
						  to in subparagraph (b)(1) of this appendix.
(C) If the load on the motors is at any time in excess
						  of three times that required for lifting the working platform with its rated
						  load, the motor shall stall. (Title 24, Part 2, Section
						  2-8512(c).)
(4) Access to the Roof Car. Safe access to the roof car
						  and from the roof car to the working platform shall be provided. If the access
						  to the roof car at any point of its travel is not over the roof area or where
						  otherwise necessary for safety self- closing, self-locking gates shall be
						  provided. Standard guardrails shall meet the provisions of Section
						  3209. (Title 24, Part 2, Section
						  2-8512(d).)
(5) Means for Maintenance, Repair, and Storage. Means
						  shall be provided to run the roof car away from the roof perimeter, where
						  necessary, and to provide a safe area for maintenance, repairs, and storage,
						  Provisions shall be made to secure the machine in the stored position. For
						  stored machines subject to wind forces, see special design and anchorage
						  requirements for "wind forces" in Part II, Section
						  10.5.1.1 of ANSI A120-1-1970,
						  American National Standard Safety Requirements for Powered Platforms for
						  Exterior Building Maintenance, in which is hereby incorporated by reference.
						  (Title 24, Part 2, Section
						  2-8512(e).)
(6) General Requirements for Working Platforms. The
						  working platform shall be of girder or truss construction and shall be adequate
						  to support its rated load under any position of loading, and comply with the
						  provisions set forth in Section
						  10 of ANSI A120.1-1970, American
						  National Standard Safety Requirements for Powered Platforms for Exterior
						  Building Maintenance, which is hereby incorporated by reference.
(7) Load Rating Plate. Each working platform shall bear
						  a manufacturer's load rating plate, conspicuously posted, stating the maximum
						  permissible rated load. Load rating plates shall be made of noncorrosive
						  material and shall have letters and figures stamped, etched, or cast on the
						  surface. The minimum height of the letters and figures shall be one-fourth
						  inch.
(8) Minimum Size. The working platform shall have a
						  minimum net width of 24 inches.
(9) Guardrails. Working platforms shall be furnished
						  with permanent guard rails not less than 36 inches high, and not more than 42
						  inches high at the front (building side). At the rear, and on the sides, the
						  rail shall not be less than 42 inches high. An intermediate guardrail shall be
						  provided around the entire platform between the top guardrail and the
						  toeboard.
(10) Toeboards. A 3 ½ -inch toeboard shall be
						  provided alone all sides of the working platform.
(11) Open Spaces Between Guardrails and Toeboards. The
						  spaces between the intermediate guardrail and platform toeboard on the building
						  side of the working platform, and between the top guardrail and the toeboard on
						  other sides of the platform, shall be filled with metallic mesh or similar
						  material that will reject a ball one inch in diameter. The installed mesh shall
						  be capable of withstanding a load of 100 pounds applied horizontally over any
						  area of 144 square inches. If the space between the platform and the building
						  face does not exceed eight inches, and the platform is restrained by guides,
						  the mesh may be omitted on the front side.
(12) Flooring. The platform flooring shall be of the
						  nonskid type, and if of open construction, shall reject a 
						  9/16
						  -inch diameter ball or be provided with a screen below the floor to reject a 
						  9/16
						  -inch diameter ball.
(13) Access Gates. Where access gates are provided,
						  they shall be self-closing and self-locking.
(14) Operating Device for Vertical Movement of the
						  Working Platform.
(A) The normal operating device for the working
						  platform shall be located on the working platform and shall be of the
						  continuous pressure weatherproof electric type.
(B) The operating device shall be operable only when
						  all electrical protective devices and interlocks on the working platform are in
						  position for normal service and, the roof car, if provided, is at an
						  established operating point.
(15) Emergency Electric Operative Device.
(A) In addition, on roof-powered platforms, an
						  emergency electric operating device shall be provided near the hoisting machine
						  for use in the event of failure of the normal operating device for the working
						  platform, or failure of the traveling cable system. The emergency operating
						  device shall be mounted in a locked compartment and shall have a legend mounted
						  thereon reading: "For Emergency Operation Only. Establish Communication With
						  Personnel on Working Platform Before Use."
(B) A key for unlocking the compartment housing the
						  emergency operating device shall be mounted in a break-glass receptacle located
						  near the emergency operating device.
(16) Manual Cranking for Emergency Operation. Emergency
						  operation of the main drive machine may be provided to allow manual cranking.
						  This Provision for manual operation shall be designed so that not more than two
						  persons will be required to perform this operation. The access to this
						  provision shall include a means to automatically make the machine inoperative
						  electrically while under the emergency manual operation. The design shall be
						  such that the emergency brake is operative at or below governor tripping speed
						  during manual operation.
(17) Arrangement and Guarding of Hoisting
						  Equipment.
(A) Hoisting equipment shall consist of a power-driven
						  drum or drums contained in the roof car (roof-lowered platforms) or contained
						  on the working platform (self-powered platform).
(B) The hoisting equipment shall be power-operated in
						  both up and down directions.
(C) Guard or other protective devices shall be
						  installed wherever rotating shafts or other mechanisms or gears may expose
						  personnel to a hazard.
(D) Friction devices or clutches shall not be used for
						  connecting the main driving mechanism to the drum or drums. Belt or
						  chain-driven machines are prohibited.
(18) Hoisting Motors.
(A) Hoisting motors shall be electric and of
						  weather-proof construction.
(B) Hoisting motors shall be in conformance with
						  applicable provisions of subparagraph (c)(22) of this appendix, Electric Wiring
						  and Equipment.
(C) Hoisting motors shall be directly connected to the
						  hoisting machinery. Motor couplings, if used, shall be of steel
						  construction.
(19) Brakes. The hoisting machines(s) shall have two
						  independent braking means, each designed to stop and hold the working platform
						  with 125 percent of rated load.
(20) Hoisting Ropes and Rope Connections.
(A) Working platforms shall be suspended by wire ropes
						  of either 6 x 19 or 6 x 37 classification, preformed or nonpreformed.
(B) The minimum grade of the robe wire shall be
						  improved plow steel. Ropes shall be fabricated of drawn galvanized or bright
						  wire. Drawn galvanized wire rope shall be fabricated of individual wires on
						  which the zinc coating has been applied at an intermediate size, and the wire
						  then drawn to finished size and to the same tolerances and with the same
						  mechanical properties as for uncoated wire of equal grade.
(C) The minimum factor of safety shall be 10, and shall
						  be calculated by the following formula:
F = S x N/W
Where
S = Manufacturer's rated breaking strength of one
						  robe.
N = Number of ropes under load.
W = Maximum static load on all ropes with the platform
						  and its rated load at any point of its travel.
(D) Hoisting ropes shall be sized to conform with the
						  required factor of safety, but in no case shall the size be less than 
						  5/16 inch
						  diameter.
(E) Winding drums shall have at least three turns of
						  robe remaining when the platform has landed at the lowest possible point of its
						  travel.
(F) The lengthening or repairing of wire rope by the
						  joining of two or move lengths is prohibited.
(G) The nondrum ends of the hoisting ropes shall be
						  provided with individual shackle rods which will permit individual adjustment
						  of rope lengths, if required.
(H) More than two reverse bends in each rope is
						  prohibited.
(I) All cable connections used to support scaffold
						  platforms shall be by means of factory attached swayed fittings or other method
						  affording equivalent strength. Only safety type shackles shall be used.
(J) Wire winders, cable winders, baskets, or the
						  equivalent, when used on suspended scaffolds, shall be so constructed as to
						  prevent kinking of the wire rope (cable).
1. The frame work shall be rigid enough to prevent
						  distortion when stepped upon, if it is mounted upon the top of the working
						  platform.
2. The cable feeding device, if tubular, shall be
						  flared to permit smooth passage of the cable through it.
A. The feeding device shall be placed at a proper angle
						  both vertically and horizontally so as to direct the cable into the storage
						  area, wherein the greatest portion of the cable will store.
(21) Rope Tag Data.
(A) A metal data tag shall be securely attached to one
						  of the wire rope fastenings. This data tag shall bear the following wire-rope
						  data:
l. The diameter in inches.
2. Construction classification.
3. Whether nonpreformed or preformed.
4. The grade of material used.
5. The manufacturer's rated breaking-strength.
6. Name of the manufacturer of the rope.
7. The month and year the ropes were installed.
(22) Electrical Wiring and Equipment.
(A) All electrical equipment and wiring shall conform
						  to the California Code of Regulations, Title 8, Electrical Safety
						  Orders.
(B) All motors and operation and control equipment
						  shall be supplied from a single power source.
(C) The power supply for the powered platform shall be
						  an independent circuit supplied through a fused disconnect switch.
(D) Electrical conductor parts of the power supply
						  system shall be protected against accidental contact.
(E) "Effective" electrical grounding shall be
						  provided.
1. Provisions for electrical grounding shall be
						  included with the power-supply system.
2. Controller cabinets, motor frames, hoisting
						  machines, the working platform, roof car and roof car track system, and
						  noncurrent carrying carts of electrical equipment, where provided, shall be
						  grounded.
3. The controller, where used, shall be so designed and
						  installed that a single ground or short circuit will not prevent both the
						  normal and final stopping device from stopping the working platform.
4. Means shall be provided on the roof car and working
						  platform for grounding portable electric tools.
5. The working platform shall be grounded through a
						  grounding connection in a traveling cable. Electrically powered tools utilized
						  on the working platform shall be grounded.
(F) Electrical receptacles located on the roof or other
						  exterior location shall be of a weatherproof type and shall be located so as
						  not to be subject to contact with water or accumulated snow. The receptacles
						  shall be grounded and the electric cable shall include a grounding conductor.
						  The receptacle and plug shall be a type designed to avoid hazard to persons
						  inserting or withdrawing the plug. Provision shall be made to prevent
						  application of cable strain directly to the plug and receptacle.
(G) Electric runway conductor systems shall be of the
						  type designed for use in exterior locations and shall be located so as not to
						  be subject to contact with water or accumulated snow. The conductors,
						  collectors, and disconnecting means shall conform to the requirements of the
						  California Code of Regulations, Title 8, Electrical Safety Orders. A grounded
						  conductor shall parallel the power conductors and be so connected that it
						  cannot be opened by the disconnecting means. The system shall be designed to
						  avoid hazard to persons in the area.
(H) Electrical protective devices and interlocks of the
						  weatherproof type shall be provided.
(I) Where the installation includes a roof car,
						  electric contact(s) shall be provided and so connected that the operating
						  devices for the working platform shall be operative only when the roof car is
						  located and mechanically retained at an established operating point.
(J) Where the powered platform includes a
						  power-operated roof car, the operating device for the roof car shall be
						  inoperative when the roof car is mechanically retained at an established
						  operating point.
(K) An electric contact shall be provided and so
						  connected that it will cause the down direction relay for vertical travel to
						  open if the tension in the traveling cable exceeds safe limits.
(L) An automatic overload device shall be provided to
						  cut off the electrical power to the circuit in all hoisting motors for travel
						  in the up direction, should the load applied to the hoisting ropes at either
						  end of the working platform exceed 125 percent of its normal tension with rated
						  load, as shown on the manufacturer's data plate on the working platform.
(M) An automatic device shall be provided for each
						  hoisting rope which will cut off the electrical power to the hoisting motor or
						  motors in the down direction and apply the brakes if any hoisting rope becomes
						  slack.
(N) Upper and lower directional limit devices shall be
						  provided to prevent the travel of the working platform beyond the normal upper
						  and lower limits of travel.
(Q) Operation of a directional limit device shall
						  prevent further motion in the appropriate direction, if the normal limit of
						  travel has been reached.
(P) Directional limit devices, if driven from the
						  hoisting machine by chains, tapes, or cables, shall incorporate a device to
						  disconnect the electric bower from the hoisting machine and apply both the
						  primary and secondary brakes in the event of failure of the driving
						  means.
(Q) Final terminal stopping devices of the working
						  platform:
l. Final terminal stopping devices for the working
						  platform shall be provided as a secondary means of preventing the working
						  platform from over-traveling at the terminals.
2. The device shall be set to function as close to each
						  terminal landing as practical, but in such a way that under normal operating
						  conditions it will not function when the working platform is stopped by the
						  normal terminal stopping device.
3. Operation of the final terminal stopping device
						  shall open the potential relay for vertical travel, thereby disconnecting the
						  electric power from the hoisting machine, and applying both the primary and
						  secondary brakes.
4. The final terminal stopping device for the upper
						  limit of travel shall be mounted so that it is operated directly by the motion
						  of the working platform itself.
(R) Emergency stop switches shall be provided in or
						  adjacent to each operating device.
(S) Emergency stop switches shall:
1. Have red operating buttons or handles.
2. Be conspicuously and permanently marked
						  "Stop."
3. Be the manually opened and manually closed
						  type.
4. Be positively opened with the opening not solely
						  dependent on springs.
(T) The manual operation of an emergency stop switch
						  associated with an operating device for the working platform shall open the
						  potential relay for vertical travel, thereby disconnecting the electric power
						  from the hoisting machine and applying both the primary and secondary
						  brakes.
(U) The manual operation of the emergency stop switch
						  associated with the operating device for a power-driven roof car shall cause
						  the electrical power to the traverse machine to be interrupted, and the
						  traverse machine brake to apply. (Title 24, Part 2, Section
						  2-8512(f).)
(23) Requirements for Emergency Communications.
(A) Communication equipment shall be provided for each
						  powered platform for use in an emergency.
(B) Two-way communication shall be established between
						  personnel on the roof and personnel on the stalled working platform before any
						  emergency operation of the working platform is undertaken by personnel on the
						  roof.
(C) The equipment shall permit two-way voice
						  communication between the working platform and
1. Designated personnel continuously available while
						  the powered platform is in use; and
2. Designated personnel on roof-powered platforms,
						  undertaking emergency operation of the working platform by means of the
						  emergency operating device located near the hoisting machine.
(D) The emergency communication equipment shall be one
						  of the following types:
1. Telephone connected to the central telephone
						  exchange system; or
2. Telephones on a limited system or an approved
						  two-way radio system, provided designated personnel are available to receive a
						  message during the time the powered platform is in use. (Title 24, Part 2,
						  Section 2-8512(g).).
(d) Type T Powered Platform (1) Roof Car. The
						  requirements of subparagraphs (c)(1) through (c)(5) of this appendix shall
						  apply to Type T powered platforms.
(2) Working Platform. The requirements of subparagraphs
						  (c)(6) through (c)(16) of this appendix apply to Type T powered
						  platforms.
(A) The working platform shall be suspended, by at
						  least two wire ropes.
(B) The maximum rated speed at which the working
						  platform of self-powered platforms may be moved in a vertical direction shall
						  not exceed 35 feet per minute.
(C) Each powered platform shall be provide with a
						  horizontal safety line.
(3) Hoisting Equipment. The requirements of
						  subparagraphs (c)(17) and (18) of this appendix shall apply to Type T powered
						  platforms.
(4) Brakes. Brakes requirements of subparagraph (c)(19)
						  of this appendix shall apply.
(5) Hoisting Ropes and Rope Connections.
(A) Subparagraphs (c)(20)(A) through (F) and (H) of
						  this appendix shall apply to Type T power platforms.
(B) Adjustable shackle rods in subparagraph (c)(20)(G)
						  of this appendix shall apply to Type T powered platforms, if the working
						  platform is suspended by more than two wire ropes.
(6) Electrical Wiring and Equipment.
(A) The reguirements of subparagraphs (c)(22)(A)
						  through (F) of this appendix shall apply to Type T powered platforms. "Circuit
						  protection limitation," "powered platform electrical service system," all
						  operating services and control eguipment shall comply with the specifications
						  contained in the California Code of Regulations, Title 8, Electrical Safety
						  Orders.
(B) For electrical protective devices, the requirements
						  of subparagraphs (c)(22)(G) through (P) shall apply to Type T platforms.
						  Requirements for the "circuit potential limitation" shall be in accordance with
						  the specifications contained in the California Code of Regulations, Title 8,
						  Electrical Safety Orders.
(7) Emergency Communications. All the requirements of
						  subparagraph (c)(23) of this appendix shall apply to Type T powered platforms.
						  (Title 24, Part 2, Section
						  2-8513).
(e) Safety Belts and Safety Lines.
(1) Each employee on the working platform of Type T
						  powered platforms shall be provided with and required to use a body harness or
						  safety belt attached to a vertical or horizontal safety line, If a horizontal
						  safety line (dog line) is used the length of the lanyard shall not exceed 5
						  feet and shall employ an energy absorbing device acceptable to the
						  Division.
(2) Body harnesses or safety belts, lines and other
						  components, including fastening means and anchorages to the working platform
						  shall conform with applicable provisions of Appendix C.
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code; and Section
							 18943(c),
							 Health and Safety Code.