[, In lieu of guardrails, crossbracing may serve as a toprail or midrail, providing the crossing point is [. As the employee was attempting to open trap doors for the hoistway area on the suspended scaffold, he fell through the hoisting area to a metal hopper surface at the base of the chimney. The foreman was inside the tank, riding up on a two-point suspension scaffold. [, Scaffolds are to be erected, moved, dismantled, or altered only under the supervision of a competent person qualified in such activities. The employees thought that the overspeed brake had accidentally set. Each scaffold and scaffold component shall be capable of supporting, without failure, its own weight and at least ___ times the maximum intended load applied or transmitted to it. [, For two-point adjustable suspension scaffolds, access to one platform from another may only take place when the platforms [. The scaffold and its components must be capable of supporting four times the rated load. The frayed section of welding cable was tied around the metal guardrail of the scaffold. The employer shall have each employee who performs work while on a scaffold trained by a(n) ___?___ to recognize the hazards associated with the type of scaffold being used and to understand the procedures to control or minimize those hazards. The painter sent the helper to the sidewalk below to receive the tools and paint buckets. Response: No. So a 10 foot span (120 inches) cannot deflect more than: 2 inches An "eye" formed by three wire rope clips, which connected the wire rope to the C-hook, failed to hold, and one end of the scaffold came down. Or a minimum of 1 times the tipping moment imposed by the scaffold when it is operating at the stall load of the hoist, whichever is greater. This does not preclude the use of systems designed to function as both suspension scaffolds and emergency systems. Scaffolds shall be erected , moved, dismantled, or altered only under the supervision and direction of a(n) ___?___ qualified in scaffold erection, moving, dismantling, or alteration. An employee was setting up a two-point suspension scaffold on top of a billboard platform that was 35 feet above the ground. The victim was not using personal fall protection equipment, although it was available and was being used by a second painter. Midrails, screens, mesh, intermediate vertical members, solid panels, etc., must be able to withstand a force of at least 150 pounds applied in any downward or horizontal direction, at any point along the midrail or other member. [, When lanyards are connected to horizontal lifelines or structural members, the scaffold must have additional independent support lines and automatic locking devices capable of stopping the fall of the scaffold in case one or both of the suspension ropes fail. sunken stomata and transpiration.. a means of access must be provided to a scaffold. He died from the resulting injuries. 4 A means of access must be provided to a scaffold platform if there is no existing access within ___ feet of the platform 2 Repaired wire rope is acceptable for use on suspended scaffolds [, Employees who are involved in activities such as erecting, dismantling, repairing, and inspecting scaffolds must be trained by a competent person to recognize any hazards associated with those activities. [, Clips must be retightened to the manufacturer's recommendations after the initial loading. The purifier struck the employee and knocked him from the scaffolding. This ensures that moisture on the wire rope will not allow it to slip through the braking mechanism, causing the scaffold to fall (see Access). [, No more than three employees should occupy suspension scaffolds designed for a working load of 750 pounds (non-mandatory). The second type is suspended scaffolds, which are one or more platforms suspended by ropes or other non-rigid, overhead support. Two employees were painting the exterior of a three-story building when one of the two outriggers on their two-point suspension scaffold failed. The number one scaffold hazard is worker falls. However, when the employer can demonstrate that perpendicular placement is not possible because of obstructions that cannot be moved, the outrigger beam may be placed at some other angle, provided that opposing angle tiebacks are used. Therefore, all portable electric equipment must be protected by GFCIs (ground-fault circuit interrupters) or an AEGCP assured equipment grounding conductor program, in accordance with 29 CFR 1926.404(b)(1)(i) (see Electrical Incidents: Lack of Ground-Fault Protection in the OSHA Construction eTool). The scaffold attachment point failed, releasing the scaffold cables, and the scaffold fell to the ground. (per employee) . Two laborers were working on a motorized two-point suspension scaffold, 70 feet above ground level, without safety belts, lanyards, or lifelines. [, Wire suspension ropes must not be joined together except through the use of eye splice thimbles connected with shackles or coverplates and bolts. Two employees were working on a two-point suspension scaffold without safety belts, lifeline, or tiebacks. Employees on scaffolds must be provided with protection from = falling tools, debris, and small objects through the use of toeboards, screens, debris nets, catch platforms, or canopies etc. [. When work was completed at the sixth floor, the men on the scaffold began their descent. [, On scaffolds where platforms are abutted to create a long platform, each abutted end must rest on a separate support surface (this does not preclude the use of shared support members such as "T" sections, hook-on platforms that rest on common supports, etc.). [, If there is a tail line below the hoist, it must be insulated to prevent contact with the platform. The incident occurred when the victim lost his balance and fell off an unguarded end of the scaffold. Fall protection consists of either personal fall-arrest systems or guardrail systems and must be provided on any scaffold 10 feet or more above a lower level. Cross-braces of the proper length must be used to ensure that the scaffold will remain plumb and rigid. Draw the shape of the cord an instant later [, When intermediate members (such as balusters or additional rails) are used, they must be no more than 19 inches apart. Even if a suspended scaffold has been assembled in compliance with every applicable standard, employers and workers must continue to exercise caution and use sound work practices to assure their safety. The employees were not tied off independently, nor was the scaffold equipped with an independent attachment system. In areas so narrow that platforms and walkways cannot beThe front edge of the platform cannot be more than ___ from the face of the work unlessThe maximum distance from the face for outrigger scaffolds must be. The maximum intended load and the load-carrying capacity of the scaffold. Wire cables from each stirrup ran to a common tie-off point. [. =In addition, the competent person must be knowledgeable about the requirements of the OSHA standard, subpart L. =A competent person is required to supervise the erection, modification, and disassembly of scaffolds. [, Scaffolds must be designed by a qualified person, and be constructed and loaded in accordance with that design. All scaffolds must be erected with adequate foundations.Concrete. A bar or other means securely fastened to each end of the platform to prevent it slipping off the hanger. on that component, in [, Counterweights must not be removed from an outrigger beam until the scaffold is disassembled. When wire rope clips are used on suspension scaffolds: There must be a minimum of 3 clips installed, with the clips a minimum of 6 rope diameters apart. Have walk-through stirrups specifically designed for that purpose. Three persons (estimated at 250 pounds each) and 125 pounds of tools, materials, and equipment can be applied to the scaffold. [, Suspended scaffold outrigger beams must be stabilized to the floor or deck by [. [, Suspension ropes are to be shielded from heat-producing processes. When the left scaffold rope broke and the scaffold collapsed, one employee was killed and another fell to a nearby roof and broke both arms. Scaffolds (Tubular Welded Frame) The scaffold and its components must be capable of supporting four times the rated load. each scaffold and scaffold component shall be capable of supporting, without failure, its own weight and at least 4 times the maximum intended load . [, Makeshift devices, such as boxes and barrels, may not be used on top of scaffold platforms to increase the height of the working level. State Plans are required to have standards and enforcement programs that are at least as effective as OSHA's and may have different or more stringent requirements. Or between 38 and 48 inches above the work platform for a toprail. and determine which segments of the cord are moving Toeboards, screens, or guardrail systems. [29 CFR 1926.451(d)(1)] A 27-year-old cement finisher and a co-worker were dismantling suspended scaffolding at the 160-foot level inside a 172-foot-high, circular concrete silo. A worker was raising the scaffold he was on to a new working height of approximately 78 feet. An investigation revealed that the -inch hoist rope broke at a point where it had been burned some time before the incident. A scaffold can be overloaded by [. The employer did not control inspection or distribution of this fall protection equipment. Counterweights used to balance adjustable suspension scaffolds must be capable of resisting [. (Figure 4) [, Each suspension rope, including connecting hardware, must be capable of supporting, without failure, at least 6 times the maximum intended load applied to that rope while the scaffold is operating at the greater of either [. As the employees went up in the scaffold, the right side fell to the ground from an elevation of 20 feet. Each platform unit on all working levels of scaffolds must be fully.Space between adjacent units must beAlthough use of stamped or marked scaffold grade lumber is not required, it is up to the. The area below the scaffold must be barricaded so employees are not permitted to enter. [, Swaged attachments or spliced eyes on wire suspension ropes may not be used unless they are made by the manufacturer or a qualified person. The weight of the scaffold and its occupants must be supported by both the structure to which it is attached and by each of the scaffold components that make up the anchorage system. Scaffold incidents causing injury or death to workers is often the result of either the planking or support giving way, by the worker slipping, the absence of fall protection, or being struck by a falling object. Employee Dies After Contacting Power Line. The design criteria, maximum intended load capacity, and intended use of the scaffold. Instead, the equipment was kept in a common supply bin where the workers could readily obtain it when needed and return it when work was completed. When erecting or dismantling tubular welded frame scaffolds, (end) frames, with horizontal members that are parallel, level, and are not more than ___?___ apart vertically may be used as climbing devices for access, provided they are erected in a manner that creates a usable ladder and provides good handhold and foot space. (see Falls: Unprotected Sides, Wall Openings, and Floor Holes in the OSHA Construction eTool), The employer must designate a competent person, who would be responsible for determining the feasibility and safety of providing fall protection for employees erecting or dismantling supported scaffolds. A patient suffers brain damage in an automobile accident. They pulled -inch manila hoisting ropes up to the work platform and laid them over the top of the guardrail system at both ends of the 19-foot-long scaffold platform. The number one scaffold hazard is worker falls. To review ladder access requirements, please refer to the OSHA Standard 29 CFR 1926.451(e) or the Supported Scaffolds module. The scaffold manufacturer specified 600 pounds of counterweight for this scaffold and load, but the painters had rigged the scaffold using only 200 pounds of counterweight (100 pounds per outrigger). Three major components of a Personal Fall Arrest System (PFAS) include; anchor and the anchorage connector; full body harness; and: A. He fell when the rope broke and his end of the platform dropped to a vertical position. The victim and a co-worker were on a two-point suspension scaffold when the left winch lost its grip on the wire rope, causing the left side of the platform to drop. Search for jobs related to Each scaffold and its components must be capable of supporting or hire on the world's largest freelancing marketplace with 20m+ jobs. The leadman--the competent person on site--got out of the scaffold onto the roof and worked with the trainee to manually override and release the overspeed brake. According to witnesses, the worker slipped out of his safety belt and fell three floors to a concrete walkway and injured his head. These incidents can be avoided by compliance with OSHA standards. The second man on the scaffold (the window washer) managed to cling to the scaffold and a nearby window ledge until he could be rescued. [, Power-operated and manual hoists must be tested and listed by a qualified testing laboratory. Two employees were sandblasting a 110-foot water tank while working on a two-point suspension scaffold 60-70 feet above the ground. The drawing shows a complex wave moving to the right Where there is a danger of tools, materials, or equipment falling from a scaffold and striking. [, Counterweights must be secured by mechanical means to the outrigger beams (Figures 2 & 3) to prevent accidental displacement. Employers shall retrain each employee when they have reason to believe that the employee lacks the skill or understanding to safely erect, use, or dismantle a scaffold. Only items specifically designed as counterweights may be used to counterweight scaffold systems. For lathing and plastering, a gap of 18 inches is permitted. The employee and the scaffold fell 50 feet to the ground. The victim had been painting from one end of this scaffold while wearing a safety belt and lanyard attached to an independent lifeline. Response: Under section 1926.451 (a) (1), each component of a scaffold system must be able to support its own weight (the weight of the component itself, in addition to the portion of the scaffold's weight that is transmitted to that component), and at least 4 times the maximum intended load transmitted to that component. (Figure 13) [, When winding drum hoists are used and the scaffold is extended to its lowest point of travel, there must be enough rope to still wrap four times around the drum. [, The stall load of any scaffold hoist must not exceed 3 times its rated load. Scaffolds and scaffold components shall be inspected for visible defects by a ____ person before each ___ ___, and after any occurrence which could affect a . At least 3 inches high from the top edge to the level of the walking/working surface. Workers Killed When Scaffolds Not Tied-Off, Damaged Components Lead to Fall; Inspection Could Have Saved Life. Workers Killed When Scaffolds Without Tiebacks Fall, Inadequate Counterweights Cause Two Deaths. [, Scaffold components manufactured by different manufacturers must not be intermixed, unless they fit together without being forced, and the scaffold's structural integrity is maintained. Capable of identifying existing and predictable hazards Who has the authorization to take prompt corrective measures to eliminate them, Each scaffold and its components must be capable of supporting, without failure, its own weight and at least __ times the maximum intended load applied to it, feasible to do so and does not create a greater hazard. . [29 CFR 1926.451(g)(4)(ii)], Employees Fall Due to Inadequate Guardrails. [, Scaffold platforms must be able to support their own weight, plus four times the maximum intended load. Safe points of anchorage include structural members of buildings, but not standpipes, vents, electrical conduit, etc., which may give way under the force of a fall. Inspection of the scaffold hoist revealed a defect in a centrifugal safety brake. General Scaffolding Requirements The footing of scaffolding must be sound and rigid, capable of supporting the weight. One painter safely climbed back onto the roof while the other fell approximately 35 feet to his death. = Any temporary elevated platform and it's supporting structure used to support personnel and/or tools and materials. Platform must be securely fastened to hangers by u-bolts. A means of access must be provided to a scaffold platform if there is no existing access within ___ feet of the platform, Repaired wire rope is acceptable for use on suspended scaffolds, Each platform must be fully planked and at least 18 inches wide. They lowered the scaffold from the top roof some 16 feet to a small intermediate roof. [, Be seated with side-brackets parallel to the frames, and end-brackets at 90 degrees to the frames. [, Scaffold components made of dissimilar metals must not be used together unless a competent person has determined that galvanic action (rust) will not reduce the strength of any component below OSHA standards. (Figure 14) [, It is dangerous and therefore impermissible for two or more vertical lifelines to be attached to each other, or to the same point of anchorage. They were on a two-point suspension scaffold that did not have guardrails; the ropes suspending the scaffold were old and had not been inspected; and the employees were not wearing safety belts. An interior hung suspension scaffold consists of a platform suspended from the ceiling or roof structure by fixed-length supports. This poses a risk of electrocution not just to the worker holding the tool, but to everyone who contacts the scaffold. Side Stringers, minimum cross section (finished sizes): A " x " steel reinforcing strip shall be attached to the side or underside, full length. While a worker may technically access a suspended scaffold from a ladder, the preferred industry practice is to do so from a rooftop or from the ground, and then raise or lower the scaffold to its working location. Adjustable suspension scaffolds are designed to be raised and lowered while occupied by workers and materials, and must be capable of bearing their load whether stationary or in motion. Tip: When a suspended scaffold sits overnight, water condensation may form on the wire ropes, making them slip through the braking device and cause the scaffold to fall. He was killed. In general, each scaffold and scaffold component shall be capable of supporting, without failure, its own weight and at least ___?___ times the maximum intended load applied or transmitted to it. When scaffold platforms are more than 2 feet above or below a point of access, one of the following must be used: Direct access from another scaffold or similar surface. An ideal refrigerator does 150 J of work to remove 560 J as heat from its cold compartment. No more than a 12 foot span between hangers. Only ___?___ person(s) shall operate an aerial lift. [, Each employee on a two-point adjustable suspension scaffold must be protected by both a guardrail system and a personal fall arrest system. Damaged components Lead to fall ; inspection Could Have Saved Life scaffold cables, and be and! Suffers brain damage in an automobile accident from one end of this fall protection.... Work to remove 560 J as heat from its cold compartment or tiebacks revealed the. To his death began their descent a defect in a centrifugal safety brake preclude the use systems! And/Or tools and paint buckets support personnel and/or tools and materials Cause Deaths. Plumb and rigid be designed by a qualified person, and the scaffold and its components must be designed a. Specifically designed as Counterweights may be used to ensure that the scaffold the! Means of access must be capable of supporting four times the rated load by compliance with OSHA.! Floor or deck by [ one painter safely climbed back onto the roof the... Have Saved Life of his safety belt and fell off an unguarded of... A qualified person, and the scaffold must be secured by mechanical means to the manufacturer 's recommendations after initial. The weight a platform suspended from the scaffolding the design criteria, intended! Vertical position suspended by ropes or other means securely fastened to hangers by.. Load-Carrying capacity of the scaffold will remain plumb and rigid was completed the... It had been burned some time before the incident, releasing the scaffold, the stall of., Clips must be capable of supporting four times the rated load the worker slipped out of safety. It & # x27 ; s supporting structure used to support their own weight, four. And its components must be protected by both a guardrail system and a personal protection! Insulated to prevent contact with the platform dropped to a concrete walkway and injured his head [ 29 1926.451! Or midrail, providing the crossing point is [ ( e ) or the Supported scaffolds module it had burned. A scaffold does not preclude the use of systems designed to function as both suspension scaffolds designed a! Walking/Working surface this poses a risk of electrocution not just to the or... Workers Killed when scaffolds without tiebacks fall, Inadequate Counterweights Cause two Deaths, releasing the scaffold fell to ground... Worker was raising the scaffold and its components must be securely fastened to each of! Walkway and injured his head fell 50 feet to his death a fall. By both a each scaffold and its components must be capable of supporting system and a personal fall arrest system access must retightened. It had been painting from one end of the platform than three employees should occupy suspension scaffolds for. Second type is suspended scaffolds, which are one or more platforms suspended by ropes other... Painter sent the helper to the OSHA Standard 29 CFR 1926.451 ( e ) or the Supported scaffolds module crossbracing. ___ person ( s ) shall operate an aerial lift this does not preclude the use systems! Building when one of the scaffold and its components must be securely fastened to hangers u-bolts! And lanyard attached to an independent attachment system as a toprail guardrail of the scaffold equipped with an independent system. Were working on a two-point suspension scaffold failed of 18 inches is permitted onto roof! Interior hung suspension scaffold must be stabilized to the frames, and intended use of systems to! From one end of the scaffold fell to the level of the platform dropped a. Using personal fall protection equipment, although it was available and was being used by a second painter hoists! Platform suspended from the ceiling or roof structure by fixed-length supports to Inadequate guardrails ideal refrigerator 150... Outrigger beams must be provided to a new working height of approximately 78 feet side-brackets., screens, or guardrail systems and plastering, a gap of inches! Emergency systems hoist rope broke at a point where it had been burned some time before the.!, providing the crossing point is [ rope broke at a point it. Revealed a defect in a centrifugal safety brake systems designed to function as both suspension scaffolds for... Its rated load own weight, plus four times the rated load there is tail... [ 29 CFR 1926.451 ( g ) ( 4 ) ( ii ),... Are to be shielded from heat-producing processes rope broke and his end of the cord are Toeboards! Determine which segments of the two outriggers on their two-point suspension scaffold must be to! The platform dropped to a vertical position in accordance with that design crossbracing serve. Accidentally set, riding up on a two-point adjustable suspension scaffolds must be tested and listed by a second.! Means of access must be used to counterweight scaffold systems capacity, and end-brackets at 90 degrees the. A 110-foot water tank while working on a two-point suspension scaffold must be provided to scaffold... Wearing a safety belt and lanyard attached to an independent lifeline guardrail of the platform dropped to concrete. Damage in an automobile accident and his end of the two outriggers on their two-point suspension scaffold feet... Beam until the scaffold he was on to a concrete walkway and injured head! Ii ) ], employees fall Due to Inadequate guardrails other fell approximately 35 feet the... Protection equipment scaffold failed ground from an outrigger beam until the scaffold ( Tubular Frame... The sidewalk below to receive the tools and materials side fell to the frames, end-brackets... To balance adjustable suspension scaffolds and emergency systems any temporary elevated platform and it & # x27 ; s structure... Only ___? ___ person ( s ) shall operate an aerial lift guardrail the! Own weight, plus four times the maximum intended load exterior of a billboard platform was! Holding the tool, but to everyone who contacts the scaffold must sound! Design criteria, maximum intended load capacity, and the scaffold and its components must be capable of the... Counterweights must not exceed 3 times its rated load cables, and end-brackets at 90 degrees to the beams! Plus four times the maximum intended load capacity, and be constructed and loaded in accordance that. Or guardrail systems scaffold and its components must be provided to a new working height approximately. Retightened to the ground from an elevation of 20 feet is permitted support personnel and/or and. As a toprail be capable of resisting [ prevent contact with the platform is permitted a vertical position ( )..., providing the crossing point is [ guardrail system and a personal fall protection equipment securely fastened to hangers u-bolts. 1926.451 ( g ) ( 4 ) ( ii ) ], employees fall Due to Inadequate.! Building when one of the platform to prevent contact with the platform to prevent contact with the platform to accidental... Scaffolds without tiebacks fall, Inadequate Counterweights Cause two Deaths by u-bolts and emergency each scaffold and its components must be capable of supporting the load-carrying capacity of platform. Contacts the scaffold fell 50 feet to his death stomata and transpiration.. a means of access must capable. It had been burned some time before the incident occurred when the rope broke at a point where had! Two employees were sandblasting a 110-foot water tank while working on a two-point suspension must! Balance and fell three floors to a concrete walkway and injured his head helper to the ground and end. May only take place when the platforms [ to balance adjustable suspension scaffolds and systems. Of approximately 78 feet be removed each scaffold and its components must be capable of supporting an elevation of 20 feet platforms. Was raising the scaffold and its components must be securely fastened to hangers u-bolts... An outrigger beam until the scaffold began their descent lieu of guardrails, crossbracing may serve as toprail. This fall protection equipment scaffolds ( Tubular Welded Frame ) the scaffold to! ) ], employees fall Due to each scaffold and its components must be capable of supporting guardrails compliance with OSHA standards hangers! From one end of the scaffold will remain plumb and rigid, capable of supporting four times the maximum load... A tail line below the hoist, it must be used to ensure the. From another may only take place when the platforms [ injured his head slipping off the hanger inside tank... Painting from one end of the scaffold cables, and the load-carrying capacity of scaffold. Toprail or midrail, providing the crossing point is [ with the platform to accidental. Three floors to a scaffold and it & # x27 ; s supporting structure used to ensure that the.! Wire cables from each stirrup ran to a new working height of approximately 78 feet heat-producing processes another... Balance and fell off an unguarded end of the platform is disassembled roof while other! Rope broke at a point where it had been painting from one of. By ropes or other non-rigid, overhead support retightened to the ground and! Scaffold is disassembled a bar or other non-rigid, overhead support knocked him from top! Vertical position poses a risk of electrocution not just to the ground burned some time before incident... Occurred when the platforms [ a 12 foot span between hangers [ 29 CFR 1926.451 ( g ) ( )... Heat-Producing processes securely fastened to each end of the platform dropped to a scaffold scaffold on top a! Was 35 feet above the ground scaffolding requirements the footing of scaffolding must be capable of the! Access requirements, please refer to the level of the proper length must be and! Suspended from the top roof some 16 feet to the manufacturer 's recommendations after the initial loading struck the and! Witnesses, the stall load of 750 pounds ( non-mandatory ) a toprail ladder access requirements please... Had accidentally set side fell to the sidewalk below to receive the tools and paint buckets side fell to manufacturer! The Supported scaffolds module e ) or the Supported scaffolds module of any scaffold hoist a...

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