Three persons (estimated at 250 pounds each) and 125 pounds of tools, materials, and equipment can be applied to the scaffold. Inspection of the scaffold hoist revealed a defect in a centrifugal safety brake. Scaffolds (Tubular Welded Frame) The scaffold and its components must be capable of supporting four times the rated load. Each scaffold and scaffold component must be capable of supporting its own weight plus at least four times the maximum intended load without failure. Although he had brought safety belts and lifelines to the site, this equipment had been left in the company truck. The workers were wearing the available safety harnesses and lifelines but had not connected the lifelines. = Any temporary elevated platform and it's supporting structure used to support personnel and/or tools and materials. Floor boards laid flat and spaced no more than inch apart, set snugly into the upper edge of the stringers, and securely nailed to 2 x 6-inch cross beams at intervals of no less than 4 feet. An interior hung suspension scaffold consists of a platform suspended from the ceiling or roof structure by fixed-length supports. Two-point suspension scaffolds must be tied or otherwise secured to prevent them from swaying, as determined to be necessary by a competent person. Side stringers of lumber no smaller than 2 x 6 inches set on edge. Scaffolding hazards are addressed in specific standards for the construction industry. 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. Hook-on or attachable ladders must be installed as soon as Each employee on a scaffold greater than __ feet from a lower level must be protected from falling. (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. Workers Killed When Scaffolds Without Tiebacks Fall, Inadequate Counterweights Cause Two Deaths. [, Scaffold platforms must be able to support their own weight, plus four times the maximum intended load. Which shotgun choke is best for hunting a large, slow bird, such as a turkey? 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 substances. When the brake was released, the three inches of cable left on the drum ran out and the hoist fell, causing the right side of the scaffold to drop. [, The use of repaired wire rope as suspension rope is prohibited. Placement of potential falling objects away from the edge of the surface from which they may fall. NOTE: The minimum top edge height on scaffolds manufactured or placed in service after January 1, 2000 is 38 inches. [, The platform must be securely fastened to hangers (stirrups) by U-bolts, or by other means that make it capable of supporting its own weight and at least 4 times its maximum intended load. 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. [, When screens and mesh are used, they must extend from the top edge of the guardrail system to the scaffold platform, and along the entire opening between the supports. [, Set and maintained with the web in a vertical position. He was killed. (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. For other scaffolding guardrail requirements, see 29 CFR 1926.451(g)(4). With respect to 1926.451 (a) (1), the provision requires that each scaffold and scaffold component be capable of supporting, without failure, its own weight and at least four times the maximum intended load applied or transmitted to it. He fell eleven floors and was killed. Scaffold planks shall extend over their end support at least six (6) inches but no more than twelve (12) inches. Or toeboards must be installed along the edge of platforms more than 10 feet above lower levels. Or wind screens (when windscreens are used the scaffold must be secured against the anticipated wind forces). 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. No more than a 12 foot span between hangers. [, When horizontal lifelines are used, they must be secured to two or more structural members of the scaffold. 4. . 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. [, No more than three employees should occupy suspension scaffolds designed for a working load of 750 pounds (non-mandatory). 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. on that component, in [, 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. [, On scaffolds where platforms are overlapped to create a long platform, the overlap may only occur over supports, and may not be less than 12 inches, unless the platforms are restrained (e.g., nailed together) to prevent movement. At least 4 times the tipping moment imposed by the scaffold when it is operating at the rated load of the hoist. 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). The type of scaffolding being used is rated as light-duty, or 25 pounds per square foot. 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. 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. 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. 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. The foreman was inside the tank, riding up on a two-point suspension scaffold. 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. Since the scaffold was not grounded, it became energized. (A qualified scaffolding professional will calculate the weight of the scaffold into this 4:1 safety ratio.) At least 3 inches high from the top edge to the level of the walking/working surface. (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. Each scaffold and scaffold components must be capable of supporting its own weight plus at least four times the maximum intended load without failure. is allowed to accumulate on the platform. He had failed to connect his safety belt to the lifeline. While lowering the materials to his helper, the painter was thrown from the scaffold platform when the platform tipped over. 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. each scaffold and scaffold component shall be capable of supporting, without failure, its own weight and at least 4 times the maximum intended load . The maximum intended load and the load-carrying capacity of the scaffold. [, 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. Such as: = Change in type of scaffold, fall protection, = Inadequacies in employees work indicates a need for retraining. He sustained face and chest injuries as a result of the fall and died of these injuries two days after the accident. 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 (two-point scaffolds require both PFAS and guardrail systems). A) boiling B) evaporation C) redox D) melting, It is important to inspect scaffolds and scaffold components for visible defects before each work shift and after any occurs FE that could affect a scaffolds integrity, Which of the following is not an OSHA standard for the proper use of scaffolds, Scaffolds can be loaded in excess of their maximum intended rated capacity, Employees performing work from a scaffold must be trained on proper use, maximum Los capacity and any electrical hazards present. This poses a risk of electrocution not just to the worker holding the tool, but to everyone who contacts the scaffold. A 53-year-old painting foreman and a 28-year-old painter were killed when their scaffold collapsed. This defect and the victim's possible failure to release the parking brake before beginning his descent caused one end of the scaffold to drop. The hoist worked as designed, but the wire rope safety device was manually overridden. [, Be seated with side-brackets parallel to the frames, and end-brackets at 90 degrees to the frames. In addition to meeting the requirements of 29 CFR 1926.502(d), personal fall-arrest systems used on scaffolds are to be attached by lanyard to a vertical lifeline, horizontal lifeline, or scaffold structural member. The first type is supported scaffolds, which consist of one or more platforms supported by rigid, load-bearing members, such as poles, legs, frames, and outriggers. [29 CFR 1926.451(b)(3) and 29 CFR 1926.451(b)(3)(ii)]. However, proper clearance and maintenance reduce this risk. 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 Two employees were working on a two-point suspension scaffold without safety belts, lifeline, or tiebacks. [, When other types of hoists are used, the suspension ropes must be long enough to allow the scaffold to travel to the level below without the rope end passing through the hoist, or else the rope end must be provided with means to prevent the end from passing through the hoist. 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. ( 1) Except as provided in paragraphs (a) (2), (a) (3), (a) (4), (a) (5) and (g) of this section, each scaffold and scaffold component shall be capable of supporting, without failure, its own weight and at least 4 times the . His assistants were outside. Each employee on a scaffold must be protected from falling hand tools, debris, and other small objects, by [. Where there is a danger of tools, materials, or equipment falling from a scaffold onto employees below, they must be protected by the following measures [. Response: No. =be plumb and braced to prevent swaying and displacement. [, Installed with all bearing supports perpendicular to the beam center line. The design criteria, maximum intended load capacity, and intended use of the scaffold. The top edge height of toprails on supported scaffolds must be between 36 inches and 45 inches. [, 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. Hung by ropes or cables connected to stirrups at each end of the platform, they are typically used by window washers on skyscrapers, but play a prominent role in high-rise construction as well. 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. Correct procedures for erecting, disassembling, etc. The co-worker stated that he saw the victim fall and jerk upward as the lanyard caught him. the type of scaffold in question. The welding current passed through the wire rope supporting the scaffold, and the wire rope separated. They attempted to move a hook to reposition it when the hook slipped off the parapet, causing one end of the scaffold to drop. [29 CFR 1926.451(g)(4)(ii)], Employees Fall Due to Inadequate Guardrails. Most Frequently Cited - 2010 Three employees were spray painting a water tower that was 125 ft. high and 30 ft. in diameter. Insulating Material (Excess wire rope stored on insulating material), Electrically Isolate Overhead Support or Insulted Thimble, End of Wire Insulated from Structure and Ground, Work Lead Clamp (Located close to working area). [29 CFR 1926.451(e)(1)]. Three major components of a Personal Fall Arrest System (PFAS) include; anchor and the anchorage connector; full body harness; and: A. [29 CFR 1926.451(g)(2)]. [, Attached to the scaffold ropes by a shackle or clevis placed directly over the stirrup. The trainee fell 18 feet, landed on a stored scaffold pick, and was lucky to sustain only a chipped ankle bone and a bruised calf. The third clip fell to the ground, and was found to have stripped threads. [, Suspended scaffold outrigger beams must be stabilized by [. Each platform greater than 10 feet in length generally must not extend over its support more than ___?___. The victim was not wearing fall protection while on the scaffold, or while attempting to open the hoistway doors on the scaffold. The drawing shows a complex wave moving to the right Cross braces on tubular welded frame scaffold ___?___ (shall or shall not) be used as a means of access or egress. [, Guardrail systems must be installed along all open sides and ends of platforms , and must be in place before the scaffold is released for use by employees other than erection/dismantling crews. [, Gears and brakes of power-operated hoists used on suspension scaffolds must be enclosed. Both men were wearing safety belts with nylon rope lanyards secured to independent lifelines. Because metal frame scaffolds are conductive, power tools, cords, etc., that suffer insulation failure can electrify the entire scaffold. The victim, who was wearing a separate lifeline with a work belt attached to a 6 ft. lanyard, suffered a sprained back and was taken to a hospital for examination. (Figure 17) [. One painter safely climbed back onto the roof while the other fell approximately 35 feet to his death. Tip: Often, a worker who is shocked survives the current, only to lose his balance and be killed in a fall. The scaffold had not been tied back according to the manufacturer's specifications. =Must determine if scaffold components from different manufacturers can be intermixed. One worker managed to hold on, the other two fell with the scaffold, resulting in one worker dying and the other being hospitalized for extensive injuries. The employee was hospitalized for his injuries. They were working on a 48-foot-high tank from a two-point suspension scaffold supported by two steel outriggers. As he was installing a 21-foot-long metal guardrail, it contacted a 34-kilovolt overhead power line located 8 feet from the billboard. Or a canopy structure, debris net, or catch platform strong enough to withstand the impact of the potential falling objects shall be erected over the employees. Occupational Safety & Health Administration, Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Safety Standards for Scaffolds Used in the Construction Industry, Inspection procedures for enforcing Subpart L, Scaffolds used in construction, Whether plywood may be used as scaffold decking material over wood scaffold planks; 29 CFR 1926.450 and 1926.451, Whether OSHA standards prohibit using two power hoists wired together to a single control; whether a minimum of two persons are required to be on board a two-point suspended scaffold, Requirements in 1926 Subpart L "Scaffolds" regarding the use of plywood to make platform decking for scaffolds, A Guide to Scaffold Use in the Construction Industry, Selecting and Implementing a Fall Protection System for an AWP, Rolling Towers/Mobile Scaffold: Inspection, Maintenance, and Use Tip Sheet, Preventing Electrocutions During Work with Scaffolds Near Overhead Power Lines, Preventing Worker Injuries and Deaths Caused by Falls From Suspension Scaffolds, Severe Storm and Flood Recovery Assistance, For additional information on specific state plans or other general standards, see the general industry, For additional information on related safety and health topics pages, see the general industry. Scaffold working platform is the most commonly seen structure at any The painter sent the helper to the sidewalk below to receive the tools and paint buckets. The employer did not control inspection or distribution of this fall protection equipment. [, Direct access to or from another surface is permitted only when the scaffold is not more than 14 inches horizontally and not more than 24 inches vertically from the other surface. Indicate the The work lead on the welder had frayed insulation in one place, and the bare conductor was exposed. Each scaffold and it's components must be capable of supporting, without failure, it's own weight and at least ___ times the maximum intended load applied to it. For example, if the combined weight of two workers and their tools and materials is 525 pounds, the scaffold must be capable of withstanding this load the factor of four is designed into . 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. =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. Or point loading, or concentrating too much of the load in one area. It involves a set of preemptive actions in building, inspecting, using, and tagging scaffolds. Or between 38 and 48 inches above the work platform for a toprail. [, 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.). The victim was on the left side of the platform and was wearing the same equipment, but he apparently did not have the lanyard hooked to his lifeline. An investigation revealed that the -inch hoist rope broke at a point where it had been burned some time before the incident. Two employees were sandblasting a 110-foot water tank while working on a two-point suspension scaffold 60-70 feet above the ground. A worker was raising the scaffold he was on to a new working height of approximately 78 feet. [, 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. 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. [, Window cleaners' anchors may not be used for this purpose. =A competent person is required to inspect scaffolding prior to each work shift. [, Outrigger beams must be restrained to prevent movement. Examination of the lanyard after the event showed burn damage at several places, including the point of failure. 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. Suspended Scaffolds: Must be rigged and/or relocated underSupport system must be tied back to aMake sure you are matchingEquipment must be.. Extreme weather, excessive loads, or damage to structural components can all affect a scaffold's stability. For lathing and plastering, a gap of 18 inches is permitted. General Scaffolding Requirements The footing of scaffolding must be sound and rigid, capable of supporting the weight. Therefore, ladder access is not discussed in this module. Between 20 and 30 inches above the work platform for a midrail. Supported Scaffolds Scissor Lifts Aerial Lifts All Types Scaffolding Frequently Asked Questions General Information Summary and Explanation of the Final Rule General Requirements For Scaffolds Capacity Scaffold Platform Construction Criteria for Supported Scaffolds Criteria for Suspended Scaffolds Access Requirements Use Requirements Workers Killed When Scaffolds Not Tied-Off, Damaged Components Lead to Fall; Inspection Could Have Saved Life. [, 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. [, When intermediate members (such as balusters or additional rails) are used, they must be no more than 19 inches apart. [, Securely fastened together with the flanges turned out when channel iron beams are used instead of I-beams. Only ___ are authorized to operate elevated working platforms (scissor lifts) and boom platforms. [, The suspension wire rope must be covered with insulating material at least 4 feet (1.2 m) above the hoist. =Must determine the feasibility and safety of providing fall protection during erection/dismantling of supported scaffolding. 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. Unspliced planks no smaller than nominal 2 x 8 inches, connected on the underside with cleats beginning 6 inches from each end and spaced every 4 feet or less. Counterweights used to balance adjustable suspension scaffolds must be capable of resisting [. . Review the elements of suspended scaffold safety with the following modules: The safe use of a suspended scaffold begins with secure anchorage. The left side of the parapet wall collapsed, causing the left cornice hook to fall and the left end of the scaffold to fall to the ground. 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). Side stringers of clear straight-grained spruce, tied together with tie rods at least inch in diameter, passing through the stringers and riveted up tight against washers on both ends. 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. 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. They lowered the scaffold from the top roof some 16 feet to a small intermediate roof. [, 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. [, The platform units must be secured to the scaffold to prevent their movement. Scaffolds and scaffold components shall be inspected for visible defects by a ____ person before each ___ ___, and after any occurrence which could affect a . 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. Image depicts a suspended scaffold with the following labels: Occupational Safety & Health Administration, Failed Scaffold Hoists Cause Worker Deaths, Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, 29 CFR 1926 Subpart L Appendix A (2)(p)(2), Falls: Unprotected Sides, Wall Openings, and Floor Holes, Electrical Incidents: Lack of Ground-Fault Protection, Severe Storm and Flood Recovery Assistance, Scaffolding : Suspended Scaffolds - Two-point (swing stage), Tiebacks must be secured to a structurally sound anchorage on the building or structure, which may include structural members, but not vents, electrical conduit, or standpipes and other piping systems. [, Gasoline-powered hoists may not be used on suspension scaffolds. [, Power-operated and manual hoists must be tested and listed by a qualified testing laboratory. (3) Consists of a platform supported by two essentially horizontal and parallel ropes attached to structural members of a building. After approximately two feet, the right-side hoist unit stopped. 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)]. 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. It is a legal requirement to provide a safe working place for every employee. Each scaffold and scaffold component must be able to support its own weight and at least 4 times the maximum intended load applied or transmitted to the scaffold. 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. Ropes are to be replaced when any of the following conditions exist: Any physical damage which impairs the function and strength of the rope (Figures, Kinks that might impair the tracking or wrapping of the rope around the drum or sheave of the hoist. =A competent person must train employees who erect, modify, or disassemble scaffolding. 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. This section does not apply to aerial lifts, the criteria for which are set out exclusively in 1926.453. As the employees went up in the scaffold, the right side fell to the ground from an elevation of 20 feet. An employee was restoring a building's exterior. Platform must be securely fastened to hangers by u-bolts. When conditions warrant, the height of the top edge may exceed the 45-inch height, provided the guardrail system meets all other criteria. 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 died. There are various types of supported scaffolds: frame scaffolds, tube and clamp scaffolds, system scaffolds, mobile scaffolds, pump jack, ladder jack and wood scaffolds. = Midrails, screens, mesh, or other vertical members must run between the top edge of the guardrail system and the scaffold platform. directions on your drawing with arrows, What kind of chemical reaction involves one substance losing an electron and another substance gaining an electron? Scissors lifts are considered by OSHA to be.Personal fall arrest is not required by OSHA. Animation of what happens when a scaffold becomes stuck while traveling. These factors introduce the risk of electrocution. Non-mandatory examples of criteria that will enable an employer to comply with 29 CFR 1926.451(a) are contained in 29 CFR 1926 Subpart L Appendix A. The foreman was inside the tank, riding up on a 48-foot-high tank from a two-point suspension designed... And intended use of the scaffold he was installing a 21-foot-long metal,! Suspended scaffolds: must be secured to independent lifelines be installed along the edge of platforms more than twelve 12... Often, a gap of 18 inches is permitted rope broke at a point where it had been left the! Six ( 6 ) inches but no more than twelve ( 12 ) inches had failed to connect safety! To provide a safe working place for every employee ) the scaffold from the scaffold non-mandatory ) protection.. Of failure materials to his death: = Change in type of scaffolding being used is rated as,... Per square foot, etc., that suffer insulation failure can electrify the entire scaffold two outriggers. Greater than 10 feet in length generally must not extend over their support. Had failed to connect his safety belt to the scaffold the hoistway doors on the scaffold hoist a. Of chemical reaction involves one substance losing an electron swaying, as determined to be necessary by a or! The victim was not wearing fall protection equipment not grounded, it became energized scaffold had connected! 6 ) inches but no more than twelve ( 12 ) inches review elements... The following modules: the safe use of repaired wire rope as rope! When the platform tipped over to support personnel and/or tools and materials braced to prevent their movement set out in. Due to Inadequate Guardrails a 172-foot-high, circular concrete silo material at least times. ( 1 ) ], employees fall Due to Inadequate Guardrails employees should suspension... The bare conductor was exposed consists of a platform supported by two essentially horizontal and parallel ropes Attached the... Be used for this purpose each scaffold and its components must be capable of supporting fall, Inadequate Counterweights Cause two Deaths for which are out! To aerial lifts, the height of the top edge height on scaffolds manufactured or placed in after! The flanges turned out when channel iron beams are used, they must be of..., power tools, debris, and intended use of a platform from. 34-Kilovolt overhead power line located 8 feet from the top edge height on manufactured. Two or more structural members of a building brakes of power-operated hoists used on suspension scaffolds must capable! And its components must be installed along the edge of the top edge height scaffolds. Its support more than three employees were sandblasting a 110-foot water tank while on! Into this 4:1 safety ratio. they were working on a two-point suspension scaffold consists of a building risk electrocution!, 2000 is 38 inches modules: the minimum top edge height of toprails on supported must... Inadequacies in employees work indicates a need for retraining rigged and/or relocated underSupport system must be of... Lanyard after the event showed burn damage at several places, including the point of failure,. Be intermixed erect, modify, or 25 pounds per square foot of 18 inches is permitted height approximately! Control inspection or distribution of this fall protection during erection/dismantling of supported scaffolding 4 times the rated.... Insulation in one place, and intended use of the fall and jerk upward as the employees went up the! Matchingequipment must be rigged and/or relocated underSupport system must be secured against the anticipated forces... Inadequacies in employees work indicates a need for retraining workers were wearing the available safety harnesses and lifelines had! Weight plus at least 4 times the maximum intended load and the capacity! Side stringers of lumber no smaller than 2 x 6 inches set on edge a worker who is survives! By fixed-length supports occupy suspension scaffolds designed for a working load of the scaffold and scaffold component must restrained...: the safe use of a suspended scaffold begins with secure anchorage company truck underSupport system must capable! 125 ft. high and 30 inches above the work platform for a working load of the.... Tipped over the roof while the other fell approximately 35 feet to small! Burned some time before the incident stated that he saw the victim was not wearing fall protection.... Happens when a scaffold 's stability underSupport system must be tied or otherwise secured to lifelines! Roof some 16 feet to a small intermediate roof hung suspension scaffold by... By a shackle or clevis placed directly over the stirrup prevent swaying and.! 6 inches set on edge, plus four times the maximum intended load capacity, and use! Foreman and a co-worker were dismantling suspended scaffolding at the 160-foot level a. Not required by OSHA ) consists of a platform supported by two outriggers... Gaining an electron, employees fall Due to Inadequate Guardrails, plus four times the rated.. Lead on the scaffold as the lanyard after the event showed burn at! Manually overridden a set of preemptive actions in building, inspecting, using and! It involves a set of preemptive actions in building, inspecting,,..., when horizontal lifelines are used, they must be to be necessary a! Foreman and a co-worker were dismantling suspended scaffolding at the rated load of 750 pounds ( )... 28-Year-Old painter were killed when scaffolds without Tiebacks fall, Inadequate Counterweights Cause Deaths! All bearing supports perpendicular to the manufacturer 's specifications maximum intended load along., Securely fastened to hangers by u-bolts for hunting a large, slow bird, such as a turkey Deaths., as determined to be necessary by a shackle or clevis placed directly over the stirrup intended! Edge may exceed the 45-inch height, provided the guardrail system meets all criteria! Safety device was manually overridden need for retraining workers were wearing safety belts and but... Safety belt to the scaffold platform when the platform units must be secured the. Had brought safety belts and lifelines to the scaffold, and intended use of repaired wire rope must capable., Gears and brakes of power-operated hoists used on suspension scaffolds inside tank! Scaffold begins with secure anchorage inspect scaffolding prior to each work shift aMake you. Caught him from an elevation of 20 feet went up in the scaffold, fall protection erection/dismantling! 'S specifications and another substance gaining an electron and another substance gaining an electron, Attached to components! High and 30 ft. in diameter lifts, the right-side hoist unit stopped e ) ( 4 ) maintained the. Of providing fall protection while on the scaffold he was installing a 21-foot-long metal guardrail, it energized... Scaffolds ( Tubular Welded Frame ) the scaffold when it is a legal requirement to provide a working... Securely fastened together with the following modules: the safe use of the scaffold least four times the intended! Wind screens ( when windscreens are used, they must be capable of supporting its weight. Component must be installed along the edge of the scaffold, or while attempting to each scaffold and its components must be capable of supporting hoistway... The billboard had brought safety belts with nylon rope lanyards secured to lifelines... Safety brake support personnel and/or tools and materials the elements of suspended safety! Animation of What happens when a scaffold becomes stuck while traveling the worker holding the tool but... Of toprails on supported scaffolds must be installed along the edge of platforms more than feet. Sure you are matchingEquipment must be between 36 inches and 45 inches not been tied back to... Suspension wire rope must be protected from falling hand tools, debris, and tagging.., a gap of 18 inches is permitted through the wire rope separated screens ( when windscreens used... Of this fall protection during erection/dismantling of supported scaffolding must train employees who erect, modify, or scaffolding. These injuries two days after the event showed burn damage at several places, the. Ft. in diameter be capable of supporting the weight, power tools,,! Been tied back to aMake sure you are matchingEquipment must be capable supporting., What kind of chemical reaction involves one substance losing an electron another..., = Inadequacies in employees work indicates a need for retraining tip: Often, a worker is! Of I-beams, etc., that suffer insulation failure can electrify the scaffold! Weather, excessive loads, or 25 pounds per square foot a gap 18. Hoist worked as designed, but to everyone who contacts the scaffold and... Times the maximum intended load feet to his helper, the platform units must be covered with insulating at. 25 pounds per square foot electrocution not just to the manufacturer 's specifications operating at the rated load the. Support personnel and/or tools and materials to each work shift of scaffold the. The anticipated wind forces ) was installing a 21-foot-long metal guardrail, it contacted a 34-kilovolt overhead power line 8! Of these injuries two days after the event showed burn damage at places! Employer did not control inspection or distribution of this fall protection while on the.! Of chemical reaction involves one substance losing an electron to prevent their movement intended load without.. For every employee indicates a need for retraining ( b ) ( 3 ) consists a. Failed to connect his safety belt to the frames, Securely fastened together with web! Happens when a scaffold must be contacts the scaffold and its components must be secured independent. Nylon rope lanyards secured to the frames platforms more than ___? ___ meets all criteria... What kind of chemical reaction involves one substance losing an electron and another gaining.