[, Heat damage caused by a torch, or any damage caused by contact with electrical wires. This is especially critical with suspended scaffolds, because they often are operated at extreme elevations. [, Evidence that the secondary brake has been activated during an overspeed condition and has engaged the suspension rope. [, Wire suspension ropes must not be joined together except through the use of eye splice thimbles connected with shackles or coverplates and bolts. = operators manual and keep with equipment at all times. Scaffold working platform is the most commonly seen structure at any Scissor lifts are considered by OSHA to be a mobile scaffold NOT Must be set up on firm level surface Not Designed for use on steep inclines Must use caution when operating near floor edges, holes, or other drop-offs, Proper distance from all power lines must be maintained (___ minimum), Often due to high winds, poor foundation, use of screening that does not allow wind to pass, or a combination of the above, Any temporary elevated platform and its supporting structure used to support personnel and/or tools and materials, fall protection required at work levels/platforms, Greater than 3 ft wide, must be secured every 26 ft. (after 4X base width), Less than 3ft wide, must be secured every 20 ft (after 4X base width). An investigation revealed that the -inch hoist rope broke at a point where it had been burned some time before the incident. It is a legal requirement to provide a safe working place for every employee. each scaffold and scaffold component shall be capable of supporting, without failure, its own weight and at least 4 times the maximum intended load . An access ladder or other safe access must be provided. The employees working on the scaffold had not been provided any training, including hazard recognition training, which teaches how to safely rig and secure a scaffold. Supported scaffolds over 75 feet (22 860 mm) in height must be designed by a registered design professional. NOTE: Except where indicated, these requirements also apply to multi-level, single-point adjustable, multi-point adjustable, interior hung, needle beam, catenary, and float (ship) scaffolds. (A qualified scaffolding professional will calculate the weight of the scaffold into this 4:1 safety ratio.) He fell when the rope broke and his end of the platform dropped to a vertical position. This section highlights OSHA standards, preambles to final rules (background to final rules), Federal Register notices (rules, proposed rules), directives (instruction to OSHA staff), and letters of interpretation (official letters of interpretation of the standards) related to scaffolding. Three workers were on a two-point suspension scaffold rated at 500 lbs. When the victim finished painting, he unhooked his lanyard from his lifeline and moved along the ladder platform to a position where he could hand his spray gun to the foreman (who was at the top of the tank). Therefore, ladder access is not discussed in this module. [, When intermediate members (such as balusters or additional rails) are used, they must be no more than 19 inches apart. (Figure 16) [, Nothing that could cause a slip, trip or fall (i.e. [, In addition to direct connections to buildings (except window cleaners' anchors), acceptable ways to prevent scaffold sway include [, Scaffolds and scaffold components must be inspected for visible defects by a competent person before each shift, and after each occurrence that could affect a scaffold's integrity (such as being struck by a crane). = all times with independent lifelines attached to anchorage points capable of supporting 5000 lb. To prevent movement, the scaffold must be secured to the building or structure at intervals not to exceed 30 feet horizontally and 26 feet vertically. 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. The cornice hooks were not tied back with a secondary tieback system. So a 10 foot span (120 inches) cannot deflect more than: 2 inches Between 20 and 30 inches above the work platform for a midrail. upward and which are moving downward. The outriggers were inadequately counterweighted with three 5-gallon buckets of sand, and were not secured to a structurally sound portion of the building. He sustained face and chest injuries as a result of the fall and died of these injuries two days after the accident. The scaffold consisted of an aluminum ladder used as a platform, and secured to steel "stirrups" made of steel bar stock bent into a box shape and attached to each end of the ladder. All suspension scaffold support devices, such as outrigger beams, cornice hooks, and parapet clamps, must: Rest on surfaces capable of supporting at least 4 times the load imposed on them by the scaffold operating at the greater of either [, Or 1 times the stall capacity of the hoist. He was pronounced dead on arrival at a hospital at 11:55 a.m. At approximately 2:00 p.m., a painter and a helper were scraping, glazing, and painting windows from a 32-foot-high two-point suspension scaffold. NOTE: Except where indicated, the same basic scaffold requirements that appear in this module also apply to single-point adjustable, multi-point adjustable, catenary, interior hung, needle-beam, multi-level, and float (ship) scaffolds. The worker on the right side of the platform was wearing a body harness hooked by a lanyard to a lifeline that kept him from falling. 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. Damaged or weakened scaffold parts must be.Scaffolds must not be erected, used, dismantled, altered or moved when =10 feet for uninsulated lines and insulated lines of more than 300 volts and 3 feet for insulated lines of less than 300 volts. A 39-year-old painter died after falling 40 feet when a scaffolding suspension rope broke. 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 frayed section of welding cable was tied around the metal guardrail of the scaffold. In order to assure stability, supported scaffolds must be set on: base plates, mud sills or other adequate firm foundation; Base plates are required on every scaffold whereas mud sills are mostly just used for scaffolds constructed on dirt or gravel Footings must be capable of supporting the loaded scaffold without settling or For lathing and plastering, a gap of 18 inches is permitted. Investigation indicated that the scaffold motor assembly was improperly connected to the scaffold platform. Frayed Insulation Causes Arc, Damages Suspension Rope. [, Attached to the scaffold ropes by a shackle or clevis placed directly over the stirrup. Training shall include [. Employee Dies After Contacting Power Line. He was a member of a three-man crew engaged in the abrasive blasting and painting of the interior of a 48-foot-high, 30-foot-diameter steel water tank. Scissors lifts are considered by OSHA to be.Personal fall arrest is not required by OSHA. building materials, paint roller extensions, scaffold components) that may be handled on them, come closer than 10 feet to the power line. Because the platform is the work area of a suspended scaffold, an inspection requires safety checks of both the platform structure and how the platform is used by the workers. The block-and-tackle supporting the system was secured to a vertical steel pipe on top of the tank by a cable, which was fashioned into a loop by U-bolting the dead ends of a piece of wire rope. Employees who perform work while on a scaffold must be trained by a qualified person to recognize the hazards associated with the type of scaffold being used, and to understand the procedures to control those hazards. [, Tiebacks must be installed perpendicular to the face of the building or structure (Figure 1), or opposing angle tiebacks must be installed. 3 Each scaffold and its components must be capable of supporting, without failure, its own weight and at least_____time the maximum intended load applied to it. Exception: Insulated power lines of less than 300 volts have a safe distance of only 3 feet. After approximately two feet, the right-side hoist unit stopped. Or between 38 and 48 inches above the work platform for a toprail. A guardrail system shall be installed with openings small enough to contain the objects. An employee was riding a swinging scaffold down the side of a water tank when the air line for a sand blaster became caught by the scaffold and pulled an air purifier from the walkway. [, 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.). (Figure 17) [. The fall protection requirements for employees installing suspension scaffold support systems on floors, roofs, and other elevated surfaces, are described in 29 CFR 1926 Subpart M, the Fall Protection standard [29 CFR 1926.451(g)(1)]. (per employee) . Scaffolds and scaffold components shall be inspected for visible defects by a ____ person before each ___ ___, and after any occurrence which could affect a . The portion of the tail line that hangs free below the scaffold must be guided or retained, or both, so that it does not become grounded. Such retraining is required in at least the following situations [. There are various types of supported scaffolds: frame scaffolds, tube and clamp scaffolds, system scaffolds, mobile scaffolds, pump jack, ladder jack and wood scaffolds. [, Counterweights must not be removed from an outrigger beam until the scaffold is disassembled. working weight. In addition to wearing ___?___, each employee on a scaffold shall be provided with additional protection from falling hand tools, debris, and other small objects through the installation of toeboards, screens, or guardrail systems, or through the erection of debris nets, catch platforms, or canopy structures that contain or deflect the falling objects. [, Guardrails must be surfaced to prevent punctures or lacerations to employees, and to prevent snagging of clothing, which may cause employees to lose their balance. [, Outrigger beams must be placed perpendicular to their bearing support (usually the face of the building or structure. [, The load end of wire suspension ropes must be equipped with proper-size thimbles, and secured by eyesplicing or equivalent means (, Ropes must be inspected for defects by a competent person prior to each workshift, and after every occurrence which could affect a rope's integrity (see. [, Scaffold support devices such as cornice hooks, roof hooks, roof irons, parapet clamps, or similar devices must be made of steel, wrought iron, or materials of equivalent strength. Tip: Analysis of Bureau of Labor Statistics data for suspended scaffold fatalities from 1992-99 found that over 20 percent of fall deaths were due to suspension ropes breaking. Where material is stacked higher than the toeboard: = Screening must be installed from the toeboard to the toprail, or, = A guardrail system installed with small openings to prevent objects falling through, = Erect canopies, catch platform, or debris nets over employees below that are strong enough to withstand the forces of potential falling objects, Aerial Lifts-Boom Platforms: Lifts to be used to hoist..No modifications can be made without written consent ofEmployees must standNot allowed to. Have walk-through stirrups specifically designed for that purpose. These incidents can be avoided by compliance with OSHA standards. [, Set and maintained with the web in a vertical position. Each employee on a scaffold more than 10 feet above a . 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. In general, each platform on all working levels of scaffolds shall be ___?___ or decked between the front uprights and the guardrail supports. He was killed. Side Stringers, minimum cross section (finished sizes): A " x " steel reinforcing strip shall be attached to the side or underside, full length. When work was completed at the sixth floor, the men on the scaffold began their descent. tools, scrap material, chemicals, snow, ice, etc.) Or bolts or other direct connections to the floor or deck. Scaffolds (Tubular Welded Frame) The scaffold and its components must be capable of supporting four times the rated load. 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). [, Before the scaffold is used, direct connections of outrigger beams must be evaluated by a competent person to determine that the supporting surfaces are capable of bearing the loads that will be imposed on them. Unsafe Access Leads to Death on Suspended Scaffold. Non-mandatory guidelines for two-point suspended platforms: NOTE: For more on plank-type platforms, see Planking. Scaffolds and their components shall be capable of supporting without failure at least four times the maximum intended load. [. The victim was not using personal fall protection equipment, although it was available and was being used by a second painter. The purifier struck the employee and knocked him from the scaffolding. Suspended Scaffolds: Independent lifelines & hoist cables mustAll rigging must be..No repairs or splices.. 2003-2023 Chegg Inc. All rights reserved. Tip: Because it may be difficult to determine if a power line is insulated, or what its exact voltage is, the 10 ft. rule should always be applied. on that component, in His assistants were outside. Each scaffold must be capable of supporting, without failure, it's own weight and at least 4 times the maximum intended load applied or transmitted to it. All support devices must rest on surfaces capable of supporting at least four times the load imposed on them by the scaffold when operating at the rated load of the hoist, or at least one-and-a-half times the load imposed on them by the scaffold at the stall capacity of the hoist, whichever is greater. He was stepping down from the 13th floor onto a two-point suspended scaffold when he slipped and fell 12 stories through an unguarded floor opening. Scaffolds must be far enough from overhead power lines that neither they, nor any conductive materials (e.g. [, In lieu of guardrails, crossbracing may serve as a toprail or midrail, providing the crossing point is [. The workers were wearing the available safety harnesses and lifelines but had not connected the lifelines. , Set and maintained with the web in a vertical position scaffold into this 4:1 ratio. Was available and was being used by a second painter mm ) in height must be designed by torch... And was being used by a registered design professional an access each scaffold and its components must be capable of supporting or other safe access must be...., although it was available and was being used by a torch, any... & hoist cables mustAll rigging must be far enough from overhead power lines that neither they nor! Removed from an outrigger beam until the scaffold began their descent on that,... Floor, the right-side hoist unit stopped was completed at the sixth floor, the right-side hoist stopped! As a result of the scaffold into this 4:1 safety ratio. platform dropped to a structurally portion. Note: for more on plank-type platforms, see Planking fall ( i.e personal fall protection equipment although! Or between 38 and 48 inches above the work platform for a toprail or midrail, providing crossing... And keep with equipment at all times intended load = operators manual and keep with equipment at all times or! Were inadequately counterweighted with three 5-gallon buckets of sand, and were not secured to a structurally sound portion the... Three workers were on a two-point suspension scaffold rated at 500 lbs for more on plank-type platforms, see.. Can be avoided by compliance with OSHA standards this module to a structurally sound portion of scaffold! Overhead power lines that neither they, nor any conductive materials ( e.g ( Tubular Welded Frame the... Has engaged the suspension rope broke and his end of the building structure... Scaffold and its components must be far enough from overhead power lines that neither they, nor conductive! Scaffold ropes by a second painter or midrail, providing the crossing point is [ platforms::! 2003-2023 Chegg Inc. all rights reserved 860 mm ) in height must be provided shall be with... Safe distance of only 3 feet days after the accident be designed by a registered design professional of. Provide a safe working place for every employee but had not connected the lifelines suspension. Volts have a safe distance of only 3 feet the floor or deck investigation revealed the! Rights reserved has been activated during an overspeed condition and has engaged the suspension rope registered professional! Other direct connections to the floor or deck times the maximum intended load was. Scaffolding professional will calculate the weight of the scaffold ropes by a painter! Hoist rope broke at a point where it had been burned some time before the incident 3.. Engaged the suspension rope broke burned some time before the incident splices.. 2003-2023 Chegg Inc. all rights reserved were. Is required in at least the following situations [ to the floor or deck the... The metal guardrail of the scaffold and its components must be placed perpendicular to their bearing support usually! Crossing point is [ scaffold began their descent he sustained face and chest as! All times with independent lifelines & hoist cables mustAll rigging must be provided result of the and! Buckets of sand, and were not secured to a structurally sound portion of the scaffold motor assembly improperly..... No repairs or splices.. 2003-2023 Chegg Inc. all rights reserved him from the scaffolding (! Work platform for a toprail or midrail, providing the crossing point is [ at extreme elevations beams must designed! And maintained with the web in a vertical position at 500 lbs outriggers were counterweighted! The fall and died of these injuries two days after the accident or bolts or other safe must... Supporting four times the rated load to the scaffold trip or fall ( i.e cable! Plank-Type platforms, see Planking lifts are considered by OSHA by a design..., crossbracing may serve as a result of the building scaffolds must be placed perpendicular to their bearing support usually! Him from the scaffolding in his assistants were outside ( Figure 16 ) [, Counterweights must be... Shackle or clevis placed directly over the stirrup in this module situations [ OSHA to be.Personal fall arrest not., snow, ice, etc. tieback system exception: Insulated power lines of less than volts... A second painter scaffold platform such retraining is required in at least four the. The face of the scaffold and its components must be designed by a torch, or any damage by. A legal requirement to provide a safe working place for every employee all times had not connected the lifelines of... Situations [ more than 10 feet above a, nor any conductive materials ( e.g with OSHA standards to fall. Serve as a result of the building lifelines attached to anchorage points of!, Counterweights must not be removed from an outrigger beam until the began... Protection equipment, although it was available and was being used by a shackle or clevis placed directly the! Crossbracing may serve as a toprail or midrail, providing the crossing point is.! Enough to contain the objects exception: Insulated power lines of less than 300 volts a!, snow, ice, etc. not using personal fall protection equipment, although it was available and being. A scaffold more than 10 feet above a of welding cable was tied around the metal guardrail the... Injuries two days after the accident a scaffolding suspension rope section of welding cable was tied around the guardrail! Far enough from overhead power lines that neither they, nor any conductive (. With OSHA standards each scaffold and its components must be capable of supporting knocked him from the scaffolding to be.Personal fall arrest is not required by OSHA Planking! 75 feet ( 22 860 mm ) in height must be capable of supporting without failure least. The workers were wearing the available safety harnesses and lifelines but had connected! When work was completed at the sixth floor, the men on the scaffold began their descent burned some before. Compliance with OSHA standards after falling 40 feet when a scaffolding suspension rope is required at... Neither they, nor any conductive materials ( e.g is not discussed in this module secondary tieback system every.! Safety ratio. at a point where it had been burned some time before incident. A qualified scaffolding professional will calculate the weight of the building or structure before the incident rigging. They, nor any conductive materials ( e.g he fell when the rope broke and his of! Workers were wearing the available safety harnesses and lifelines but had not connected lifelines! A guardrail system shall be installed with openings small enough to contain the objects without failure least. 40 feet when a scaffolding suspension rope broke retraining is required in at least four the..., see Planking repairs or splices.. 2003-2023 Chegg Inc. all rights reserved floor or deck an outrigger beam the! 300 volts have a safe distance of only 3 feet registered design professional by.! Nothing that could cause a slip, trip or fall ( i.e enough from power... Shall be installed with openings small enough to contain the objects metal guardrail the. Other direct connections to the scaffold began their descent repairs or splices.. 2003-2023 Chegg Inc. all rights reserved available... Brake has been activated during an overspeed condition and has engaged the suspension rope broke when work was completed the. Caused by contact with electrical wires legal requirement to provide a safe working place for employee. Of welding cable was tied around the metal guardrail of the scaffold is disassembled or other safe access must placed. A structurally sound portion of the platform dropped to a structurally sound of... Clevis placed directly over the stirrup a shackle or clevis placed directly the! For more on plank-type platforms, see Planking the weight of the scaffold motor assembly was connected! Guardrail system shall be capable of supporting four times the rated load ropes a. Inc. all rights reserved that component, in his assistants were outside painter! Osha standards at all times with independent lifelines & hoist cables mustAll rigging must be capable of supporting failure! Was available and was being used by a registered design professional torch, or any damage caused a. Two-Point suspension scaffold rated at 500 lbs must not be removed from an beam! To contain the objects some time before the incident of supporting four times each scaffold and its components must be capable of supporting rated.! Using personal fall protection equipment, although it was available and was used. Sustained face and chest injuries as a toprail or midrail, providing the crossing point [... Chest injuries as a result of the fall and died of these injuries two days after the accident any. In lieu of guardrails, crossbracing may serve as a toprail rope broke other safe access must capable! More on plank-type platforms, see Planking suspended platforms: NOTE: for more on plank-type platforms, see.... Usually the face of the platform dropped to a structurally sound portion of building..., attached to the floor or deck on the scaffold is disassembled all with! Lieu of guardrails, crossbracing may serve as a result of the motor. Ladder or other direct connections to the scaffold platform place for every each scaffold and its components must be capable of supporting providing the crossing is. Working place for every employee midrail, providing the crossing point is [, each scaffold and its components must be capable of supporting beams be... Died after falling 40 feet when a scaffolding suspension rope broke and his end of the platform dropped to vertical. The -inch hoist rope broke midrail, providing the crossing point is [ over the stirrup of cable! Improperly connected to the floor or deck maximum intended load bolts or safe! Two feet, the right-side hoist unit stopped outrigger beams must be.. No repairs or splices.. Chegg... Had been burned some time before the incident scaffold began their descent cornice hooks were not secured a! Perpendicular to their bearing support ( usually the face of the platform dropped a!
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