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swingstage requirments

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Swing stage scaffolds, also known as two-point adjustable suspension scaffolds, have specific safety requirements to ensure worker safety. These requirements cover various aspects of the scaffold, including its components, assembly, use, and maintenance.

Here's a breakdown of the safety requirements:

Platform Specifications:

  • The platform must be securely fastened to the hangers (stirrups) using U-bolts or equivalent means that meet safety standards [6]

[4]

  • Platforms should be of the ladder-type, plank-type, beam-type, or light-metal type. Light metal-type platforms with a rated capacity of 750 pounds or less and platforms 40 feet (12\.2 m) or less in length must be tested and listed by a nationally recognized testing laboratory [6]

[4]

  • Platforms should be at least 500 millimeters wide and fastened to the stirrups [2]
  • Platforms shall not be more than 36 inches (0\.9 m) wide unless designed by a qualified person to prevent unstable conditions [6]

[5] [4]

Enclosure:

  • The swingstage scaffold platform should have an enclosure on the three sides that are not adjacent to the building [1]

[2]

  • The enclosure must be made of wire mesh or another material that is at least as effective at containing materials or equipment [1]

[2]

  • The enclosure should extend not less than 1 meter above the platform [1]

[2]

Ropes:

  • The hoisting equipment must be equipped with automatically operating locking mechanisms to prevent suspension ropes from slipping or running free [1]
  • For manually operated swingstage scaffolds, the hoisting mechanism must be securely locked in a positive drive position, and the scaffold must have a secondary anti-fall device that connects it to the suspension rope above the hoisting mechanism [1]
  • The suspension rope must be long enough to reach the next working surface below the scaffold, with the end doubled back and securely held by a cable clamp to prevent the hoisting machine from running off the end of the rope [1]

[1]

  • Suspension ropes supporting adjustable suspension scaffolds shall be of a diameter large enough to provide sufficient surface area for the functioning of brake and hoist mechanisms and shall be shielded from heat-producing processes. When acids or other corrosive substances are used on a scaffold, the ropes shall be shielded, treated to protect against the corrosive substances, or shall be of a material that will not be damaged by the substance being used [9]

[9]

Additional Safety Measures:

  • Powered swingstage scaffolds must have manually operated secondary mechanisms or escape devices if workers cannot reach a safe exit due to mechanical or power failure [1]
  • Workers on the scaffold stage must be able to use the secondary mechanism or escape device to move the scaffold to a safe exit point [1]
  • Two or more swingstage scaffolds should not be linked together by bridging the distance between them [1]
  • Ensure that rollers or fenders are installed on the platform to bear against the side of the building or structure. These should hold the platform at a sufficient distance from the wall to avoid obstacles, but not so far as to allow a worker to fall through the space between the wall and the platform [2]
  • A hook used in a swing stage suspension system shall be moused or have a safety latch [8]

Thrustouts and Counterweights:

  • Thrustouts, clamps, or parapet hooks must be tied back or secured to a solid part of the structure to prevent movement or dislodgement [2]
  • Counterweights must be firmly attached to the thrustouts and heavy enough to counterbalance 4 times the maximum weight likely to be on the scaffold. Bagged or loose material are not allowed as counterweights [2]

Worker Responsibilities:

  • Workers must inspect the scaffold before starting work to ensure that thrustouts or parapet hooks are secured and counterweights meet requirements [1]
  • Workers must remain between the stirrups at all times and not bridge the distance between the scaffold and any other scaffold [3]
  • Vertical lifelines used for fall protection must not be used as a means of entering or leaving a swingstage, and bagged or loose materials must not be used as counterweights [3]
  • All ropes from the scaffold that extend to the ground or a landing must be prevented from tangling [3]
  • When the scaffold is moved up or down on its suspension ropes, the stage must not be out of level by more than 10 percent of its length [3]

Fall Protection:

  • If a worker may fall 3 meters or more while working from a suspended swingstage scaffold, their personal fall arrest system must be connected to a vertical lifeline [3]
  • An employer may allow a worker to connect a personal fall arrest system to a horizontal lifeline or anchorage on the swingstage scaffold if the failure of one suspension line will not substantially alter the position of the swingstage scaffold [3]

Other requirements:

  • A swing stage shall not be used without the prior permission of the minister when there are 2 or more work platforms at different levels on one swing stage assembly; one swing stage is used above or below a portion of another swing stage; there is bridging between swing stages; a work platform exceeds 10 metres in length; or the suspension height exceeds 90 metres [7]
  • A swing stage shall be suspended from parapet clamps, cornice hooks, thrust-out beams or other solid anchorages having a working load limit that is at a minimum equivalent to that of the suspension system for the swing stage [7]
  • A suspension line for a swing stage shall be secured at the upper end using a safety hook, shackle or other method acceptable to the minister [7]
  • The working load limit of a cornice hook or parapet clamp shall be determined by the manufacturer or professional engineer and be clearly marked on the hook or clamp [10]
  • A cornice hook or parapet clamp shall be installed to engage structurally sound portions of a building or structure having adequate strength for the purpose [10]
  • A cornice hook, parapet clamp or thrust-out beam shall be secured by a tieback to a solid anchorage on the building or structure or to another parapet clamp secured on the far side of the structure [10]
  • A thrust-out beam used to support a swing stage shall provide a minimum safety factor of 4, based on the ratio of the ultimate load carrying capacity of the thrust-out beam to the static load [10]
  • A thrust-out beam used for supporting a swing stage shall be counterbalanced to support a load of at least 4 times the static load [10]
  • Where a suspension line, tieback, lifeline or other part of the rigging for a swing stage comes into contact with a rough or sharp edge, the line shall be protected from damage [8]

Training:

  • The employer shall have each employee who performs work while on a scaffold trained by a person qualified in the subject matter to recognize the hazards associated with the type of scaffold being used and to understand the procedures to control or minimize those hazards. The training shall include the nature of any electrical hazards, fall hazards and falling object hazards in the work area; the correct procedures for dealing with electrical hazards and for erecting, maintaining, and disassembling the fall protection systems and falling object protection systems being used; the proper use of the scaffold, and the proper handling of materials on the scaffold; the maximum intended load and the load-carrying capacities of the scaffolds used [11]

These requirements are put in place to ensure that swing stage scaffolds are used safely and that workers are protected from falls and other hazards.

11 source record(s)

Sources used for this answer

[1] Occupational Health and Safety Regulations, 2012 (N.L. Reg. 5/12)

Page 104

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# Back to Top ## Hook and clamp working load limit 224. The working load limit of a cornice hook or parapet clamp shall be determined by the manufacturer or professional engineer and be clearly marked on the hook or clamp. ## Back to Top 5/12 s224 ## Hook and clamp engagement 225. (1) A cornice hook or parapet clamp shall be installed to engage structurally sound portions of a building or structure having adequate strength for the purpose. (2) Where the structural adequacy of the building or structure at the point of attachment of a cornice hook or parapet clamp is not known, a professional engineer shall determine and certify the attachment points. 5/12 s225 ## Back to Top ## Tiebacks 226. (1) A cornice hook, parapet clamp or thrust-out beam shall be secured by a tieback to a solid anchorage on the building or structure or to another parapet clamp secured on the far side of the structure. (2) The securing, rigging and anchorage required under subsection (1) shall have an ultimate strength of at least 22.2 kilonewtons. (3) A tieback referred to in subsection (1) shall, to the extent practicable, be rigged at a right angle to the building face. 5/12 s226 ## Back to Top ## Thrust-out beams 227. (1) A thrust-out beam used to support a swing stage shall provide a minimum safety factor of 4, based on the ratio of the ultimate load carrying capacity of the thrust-out beam to the static load. (2) The rated load for the allowable thrust-out beam projections shall be determined by the beam manufacturer or a professional engineer and clearly marked on the beam. ## Back to Top 5/12 s227 ## Counterbalance of thrust-out beams 228. (1) A thrust-out beam used for supporting a swing stage shall be counterbalanced to support a load of at least 4 times the static load. (2) A counterweight used to counterbalance a thrust-out beam shall be

[2] Occupational Health and Safety Code (Alberta Regulation 191/2021)

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# Part 23 Scaffolds and Temporary Work Platforms Scaffolds (cont.) ## Suspended scaffolds (cont.) Section 342 OCCUPATIONAL HEALTH AND SAFETY CODE Part 23 AR 191/2021 (a) defective parts of the mechanism can be easily detected, and (b) an irregularity in the operation of the mechanism can be easily detected. - 341(7) An employer must ensure that a suspended scaffold platform has an enclosure that (a) is on the 3 sides of the platform that are not adjacent to the building, (b) is made of wire mesh that complies with section 322 or another material that is at least as effective at containing materials or equipment, and (c) extends not less than 1 metre above the platform. - AR 191/2021 $341;242/2022 ## Swingstage scaffolds - 342(1) An employer must ensure that (a) a commercially manufactured swingstage scaffold is erected, used, operated and maintained in accordance with the manufacturer's specifications or specifications certified by a professional engineer, (b) a swingstage scaffold that is not commercially manufactured is designed and certified by a professional engineer, and (c) operating procedures are developed for a swingstage scaffold referred to in clause (b). - 342(2) If it is necessary for the safe operation of a swingstage scaffold with a platform, an employer must ensure that the platform is designed to prevent the swingstage scaffold from swinging or swaying away from the building or structure. ## Requirements for swingstage scaffold - 343(1) An employer must ensure that a swingstage scaffold is used only as a light duty scaffold. - 343(2) An employer must ensure that a swingstage scaffold is suspended by at least 2 upper attachment points placed so that the suspension ropes are parallel. - 343(3) An employer must ensure that a platform is at least 500 millimetres wide and fastened to the stirrups. - 343(4) An employer must ensure that a platform is equipped with rollers or fenders that bear against the side of the buildin…

[3] Occupational Health and Safety Code (Alberta Regulation 191/2021)

Page 194

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# Part 23 Scaffolds and Temporary Work Platforms Scaffolds (cont.) ## Requirements for swingstage scaffold (cont.) Section 344 OCCUPATIONAL HEALTH AND SAFETY CODE Part 23 AR 191/2021 - 343(7) An employer must ensure that power units on a swingstage scaffold are equipped with (a) manually operated constant pressure controls, and (b) positive drives for raising and lowering the scaffold. - 343(8) An employer must ensure that a swingstage scaffold platform has an enclosure that (a) is on the 3 sides of the platform that are not adjacent to the building, (b) is made of wire mesh that complies with section 322 or another material that is at least as effective at containing materials or equipment, and (c) extends not less than 1 metre above the platform. ## Safety on swingstage scaffolds - 344(1) An employer must ensure that if workers are required to be on a swingstage scaffold, the hoisting equipment is equipped with automatically operating locking mechanisms SO that the suspension ropes cannot slip or run free. - 344(2) An employer must ensure that if workers are required to be on a manually operated swingstage scaffold, (a) the hoisting mechanism is securely locked in a positive drive position, and (b) the scaffold has a secondary anti-fall device that connects the scaffold to the suspension rope at a point above the hoisting mechanism. - 344(3) An employer must ensure that a powered swingstage scaffold has a manually operated secondary mechanism or an escape device, other than the vertical lifeline used for fall protection, if workers cannot reach a safe exit when there is a mechanical failure or power failure. - 344(4) An employer must ensure that a worker on the stage of a swingstage scaffold can use the manually operated secondary mechanism or escape device referred to in subsection (3) to move the scaffold to a point at which the worker can exit safely. - 344(5) An employer must ensure that a suspension rope is long enough to reach the …

[4] Occupational Health and Safety Regulations, 2012 (N.L. Reg. 5/12)

Page 103

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# Back to Top (cont.) ## Swing stages - definitions (cont.) 5/12 s218 # Back to Top ## Rated load 219. The rated load (a) shall be permanently marked upon a swing stage and clearly readable by workers on the stage; and (b) shall not be exceeded. 5/12 s219 ## Back to Top ## Weight identification 220. A swing stage platform and a hoist unit shall have its weight clearly marked on it. 5/12 s220 ## Back to Top ## Prior permission 221. A swing stage shall not be used without the prior permission of the minister when (a) there are 2 or more work platforms at different levels on one swing stage assembly; (b) one swing stage is used above or below a portion of another swing stage; (c) there is bridging between swing stages; (d) a work platform exceeds 10 metres in length; or (e) the suspension height exceeds 90 metres. 5/12 s221 ## Back to Top ## Attachment points 222. A swing stage shall be suspended from parapet clamps, cornice hooks, thrust-out beams or other solid anchorages having a working load limit that is at a minimum equivalent to that of the suspension system for the swing stage. 5/12 s222 ## Back to Top - Securing suspension lines 223. A suspension line for a swing stage shall be secured at the upper end using a safety hook, shackle or other method acceptable to the minister. 5/12 s223

[5] Occupational Health and Safety Code (Alberta Regulation 191/2021)

Page 195

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# Part 23 Scaffolds and Temporary Work Platforms Scaffolds (cont.) ## Workers on swingstage scaffolds (cont.) Section 346 OCCUPATIONAL HEALTH AND SAFETY CODE Part 23 AR 191/2021 (a) all ropes from the scaffold that extend to the ground or a landing are prevented from tangling, and (b) when the scaffold is being moved up or down on its suspension ropes, the stage is not out of level by more than 10 percent of its length. - 345(3) A person on a swingstage scaffold must (a) remain between the stirrups at all times, (b) not bridge the distance between the scaffold and any other scaffold, (c) not use a vertical lifeline used for fall protection as a means of entering or leaving a swingstage, and (d) not use bagged or loose materials as counterweights on the scaffold. - 345(4) An employer must ensure that if a worker may fall 3 metres or more while working from a suspended swingstage scaffold, the worker's personal fall arrest system is connected to a vertical lifeline. - 345(5) Despite subsection (4), an employer may allow a worker using a swingstage scaffold to connect a personal fall arrest system to a horizontal lifeline or anchorage on the swingstage scaffold if the failure of one suspension line will not substantially alter the position of the swingstage scaffold. ## Elevating Platforms and Aerial Devices ## Worker safety - 346(1) An employer must ensure that a worker is not travelling in a basket, bucket, platform or other elevated or aerial device that is moving on a road or work site if road conditions, traffic, overhead wires, cables or other obstructions create a danger to the worker. - 346(2) A person must not travel in a basket, bucket, platform or other elevated or aerial device that is moving on a road or work site if road conditions, traffic, overhead wires, cables or other obstructions create a danger to the person. ## Standards 347(1) An employer must ensure that a self-propelled work platform manufactured on or after July 1, 2…

[6] Occupational Health and Safety Regulations, 2012 (N.L. Reg. 5/12)

Page 105

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# Back to Top (cont.) ## Counterbalance of thrust-out beams (cont.) (a) clearly marked to indicate its weight; (b) of solid material not subject to loss of weight through attrition; and (c) secured to the thrust-out beam. 5/12 s228 ## Back to Top ## Hook closures 229. (1) A hook used in a swing stage suspension system shall be moused or have a safety latch. (2) Subsection (1) does not apply to the connection between a cornice hook and the structure. 5/12 s229 ## Back to Top ## Protection against damage 230. (1) Where a suspension line, tieback, lifeline or other part of the rigging for a swing stage comes into contact with a rough or sharp edge, the line shall be protected from damage. (2) Padding shall be used to minimize loss of rope strength where a line supporting a swing stage makes a sharp bend over an edge. 5/12 s230 ## Back to Top ## Fibre rope suspension 231. Fibre rope used to suspend a swing stage or similar equipment shall (a) provide a safety factor of at least 10, based on the ratio of the rope manufacturer's rated breaking strength for the rope to the load on the rope due to the static load; (b) be made of synthetic fibre having a breaking strength of at least 22 kilonewtons; (c) be reeved through a block and tackle system comprising at least one double upper and one single lower block, for each hanger; (d) have the hauling line secured to prevent free running of the line; (e) be free of knots or splices except for terminal eye-splices; and (f) not be used where exposed to adverse effects of chemicals, unless the rope is made of materials inert to the chemicals. 5/12 s231 Back to Top ## Wire rope suspension 232. Wire rope used to suspend a swing stage or similar equipment shall

[7] Rules for the Administration of the Oregon Safe Employment Act (Construction, Division 3, OSHA Oregon)

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# ADDITIONAL REQUIREMENTS APPLICABLE TO SPECIFIC TYPES OF SCAFFOLDS (cont.) L # ADDITIONAL REQUIREMENTS APPLICABLE TO SPECIFIC TYPES OF SCAFFOLDS Oregon Administrative Rules Oregon Occupational Safety and Health Division (p) Two-point adjustable suspension scaffolds (swing stages). The following requirements do not apply to two-point adjustable suspension scaffolds used as masons' or stonesetters' scaffolds. Such scaffolds are covered by paragraph (q) of this section. (1) Platforms shall not be more than 36 inches (0.9 m) wide unless designed by a qualified person to prevent unstable conditions. (2) The platform shall be securely fastened to hangers (stirrups) by U-bolts or by other means which satisfy the requirements of $1926.451(a). (3) The blocks for fiber or synthetic ropes shall consist of at least one double and one single block. The sheaves of all blocks shall fit the size of the rope used. (4) Platforms shall be of the ladder-type, plank-type, beam-type, or light-metal type. Light metal-type platforms having a rated capacity of 750 pounds or less and platforms 40 feet (12.2 m) or less in length shall be tested and listed by a nationally recognized testing laboratory. (5) Two-point scaffolds shall not be bridged or otherwise connected one to another during raising and lowering operations unless the bridge connections are articulated (attached), and the hoists properly sized. (6) Passage may be made from one platform to another only when the platforms are at the same height, are abutting, and walk-through stirrups specifically designed for this purpose are used. (q) Multi-point adjustable suspension scaffolds, stonesetters' multi-point adjustable suspension scaffolds, and masons' multi-point adjustable suspension scaffolds. (1) When two or more scaffolds are used they shall not be bridged one to another unless they are designed to be bridged, the bridge connections are articulated, and the hoists are properly sized. (2) If bridges are not…

[8] Safety and Health Regulations for Construction (OSHA 29 CFR 1926) - 1926.454 - Training requirements

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U.S. DEPARTMENT OF LABOR # Occupational Safety and Health Administration - Part Number: 1926 - Part Number - Title: Safety and Health Regulations for Construction - Subpart: 1926 Subpart L - Subpart Title: Scaffolds Standard - Number: - 1926.454 - Title: Training requirements. - GPO Source: e-CFR This section supplements and clarifies the requirements of $ 1926.21(b)(2) as these relate to the hazards of work on scaffolds. ## 1926.454(a) The employer shall have each employee who performs work while on a scaffold trained by a person qualified in the subject matter to recognize the hazards associated with the type of scaffold being used and to understand the procedures to control or minimize those hazards. The training shall include the following areas, as applicable: - 1926.454(a)(1) The nature of any electrical hazards, fall hazards and falling object hazards in the work area; - 1926.454(a)(2) The correct procedures for dealing with electrical hazards and for erecting, maintaining, and disassembling the fall protection systems and falling object protection systems being used; - 1926.454(a)(3) The proper use of the scaffold, and the proper handling of materials on the scaffold; - 1926.454(a)(4) The maximum intended load and the load-carrying capacities of the scaffolds used; and Submit Feedback

[9] OSHA Construction Industry Standards Requiring Programs, Inspections, Procedures Records and/or Training (NCDOL)

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# 1926.451-GENERAL REQUIREMENTS (cont.) ## Inspections and Tests (cont.) 1926.452(w)(6)(ii)-The height to base width ratio of the scaffold during movement is two to one or less, unless the scaffold is designed and constructed to meet or exceed nationally recognized stability test requirements such as those listed in paragraph (x) [Repair Bracket Scaffolds] of Appendix A [Scaffold Specifications] to this subpart (ANSI/SIA A92.5 and A92.6). ## Recordkeeping 1926.452(a)(10)-Pole scaffolds over 60 feet in height shall be designed by a registered professional engineer, and shall be constructed and loaded in accordance with that design. Non-mandatory Appendix A [Scaffold Specifications] to this subpart contains examples of criteria that will enable an employer to comply with design and loading requirements for pole scaffolds under 60 feet in height. 1926.452(b)(10)-Tube and coupler scaffolds over 125 feet in height shall be designed by a registered professional engineer, and shall be constructed and loaded in accordance with such design. Non-mandatory Appendix A [Scaffold Specifications] to this subpart contains examples of criteria that will enable an employer to comply with design and loading requirements for tube and coupler scaffolds under 125 feet in height. 1926.452(c)(5)(iii-Fabricated frame scaffolds. Be used only to support personnel, unless the scaffold has been designed for other loads by a qualified engineer and built to withstand the tipping forces caused by those other loads being placed on the bracket-supported section of the scaffold. 1926.452(c)(6)-Fabricated frame scaffolds. Scaffolds over 125 feet (38.0 m) in height above their base plates shall be designed by a registered professional engineer, and shall be constructed and loaded in accordance with such design. 1926.452(i)(8)-Outrigger scaffolds. Scaffolds and scaffold components shall be designed by a registered professional engineer and shall be constructed and loaded in accordance with such …

[10] Construction Safety and Health Standards (MIOSHA)

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# 1926.451 - GENERAL REQUIREMENTS (cont.) ## 1926.451(f) "Use." (cont.) 1926.451(f)(6) The clearance between scaffolds and power lines shall be as follows: Scaffolds shall not be erected, used, dismantled, altered, or moved such that they or any conductive material handled on them might come closer to exposed and energized power lines than as follows: <table><tr><th colspan="3">*INSULATED LINES</th></tr><tr><td>VOLTAGE</td><td>MINIMUM DISTANCE</td><td>ALTERNATIVES</td></tr><tr><td>Less than 300 volts</td><td>3 feet (0.9 m)</td><td></td></tr><tr><td>300 volts to 50 kv</td><td>10 feet (3.1 m)</td><td></td></tr><tr><td>More than 50 kv</td><td>10 feet (3.1 m) plus 0.4 inches (1.0 cm) for each kv over 50 kv</td><td>2 times the length of the line insulator, but never less than 10 feet (3.1 m)</td></tr><tr><td colspan="3">*UNINSULATED LINES</td></tr><tr><td>VOLTAGE</td><td>MINIMUM DISTANCE</td><td>ALTERNATIVES</td></tr><tr><td>Less than 50 kv</td><td>10 feet (3.1 m)</td><td></td></tr><tr><td>More than 50 kv</td><td>10 feet (3.1 m) plus 0.4 inches (1.0 cm) for each kv over 50 kv</td><td>2 times the length of the line insulator, but never less than 10 feet (3.1 m)</td></tr></table> Exception to paragraph (f)(6): Scaffolds and materials may be closer to power lines than specified above where such clearance is necessary for performance of work, and only after the utility company, or electrical system operator, has been notified of the need to work closer and the utility company, or electrical system operator, has deenergized the lines, relocated the lines, or installed protective coverings to prevent accidental contact with the lines. 1926.451(f)(7) Scaffolds shall be erected, moved, dismantled, or altered only under the supervision and direction of a competent person qualified in scaffold erection, moving, dismantling or alteration. Such activities shall be performed only by experienced and trained employees selected for such work by the competent person. 1926.451(f)(8)…

[11] Construction Safety and Health Standards (MIOSHA)

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# 1926.452 - ADDITIONAL REQUIREMENTS APPLICABLE TO SPECIFIC TYPES OF SCAFFOLDS (cont.) ## 1926.452(f) "Horse scaffolds." (cont.) 1926.452(n) "Step, platform, and trestle ladder scaffolds." 1926.452(n)(1) Scaffold platforms shall not be placed any higher than the second highest rung or step of the ladder supporting the platform. - 1926.452(n)(2) All ladders used in conjunction with step, platform and trestle ladder scaffolds shall meet the pertinent requirements of subpart X of this part -- Stairways and Ladders, except that job-made ladders shall not be used to support such scaffolds. - 1926.452(n)(3) Ladders used to support step, platform, and trestle ladder scaffolds shall be placed, fastened, or equipped with devices to prevent slipping. - 1926.452(n)(4) Scaffolds shall not be bridged one to another. - 1926.452(o) "Single-point adjustable suspension scaffolds." - 1926.452(o)(1) When two single-point adjustable suspension scaffolds are combined to form a two-point adjustable suspension scaffold, the resulting two-point scaffold shall comply with the requirements for two-point adjustable suspension scaffolds in paragraph (p) of this section. - 1926.452(o)(2) The supporting rope between the scaffold and the suspension device shall be kept vertical unless all of the following conditions are met: - 1926.452(o)(2)(i) The rigging has been designed by a qualified person, and - 1926.452(o)(2)(ii) The scaffold is accessible to rescuers, and - 1926.452(o)(2)(iii) The supporting rope is protected to ensure that it will not chafe at any point where a change in direction occurs, and - 1926.452(o)(2)(iv) The scaffold is positioned so that swinging cannot bring the scaffold into contact with another surface. - 1926.452(o)(3) Boatswains' chair tackle shall consist of correct size ball bearings or bushed blocks containing safety hooks and properly "eye-spliced" minimum five-eighth (5/8) inch (1.6 cm) diameter first-grade manila rope, or other rope which will satisfy t…

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