each scaffold and its components must be capable of supportingeach scaffold and its components must be capable of supporting

The plan was to lower the scaffold an additional 20 feet to the main roof. =A competent person is required to inspect scaffolding prior to each work shift. 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. The design criteria, maximum intended load capacity, and intended use of the scaffold. Response: No. 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. 3. 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. [, Be used only to support personnel, unless the scaffold has been designed and built to withstand the tipping forces caused by other loads. The top edge height of toprails on supported scaffolds must be between 36 inches and 45 inches. The employee was hospitalized for his injuries. Two employees, the leadman and a trainee mechanic, were assigned to move a two-point suspended scaffold equipped with two SC40 hoists. [29 CFR 1926.452(p)(4)]. (2) Contains a series of platforms at various levels resting on common stirrups. 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. Six other boilermakers had just left a suspension scaffold when it fell about 392 feet along with the foreman, who was killed. On the basis of what you know about cerebellar function, how can you determine that the cerebellum is involved? According to witnesses, the worker slipped out of his safety belt and fell three floors to a concrete walkway and injured his head. [, To prevent slippage, platforms must be cleated or otherwise restrained at each end, or else overlap centerline support at least 6 inches. 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. 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. 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. 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. Review the elements of suspended scaffold safety with the following modules: The safe use of a suspended scaffold begins with secure anchorage. Hazards and Possible Solutions 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). (, Clips must be installed according to the manufacturer's recommendations. Therefore, assessing personnel abilities is a vital part of scaffold design, erection, maintenance, and use, and should not be overlooked in scaffold inspections. Bi 09/04/2023 09/04/2023 [, In lieu of guardrails, crossbracing may serve as a toprail or midrail, providing the crossing point is [. 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. Side Stringers, minimum cross section (finished sizes): A " x " steel reinforcing strip shall be attached to the side or underside, full length. [, Evidence that the secondary brake has been activated during an overspeed condition and has engaged the suspension rope. 4 In general, each platform on all working levels of scaffolds shall be ___?___ or decked between the front uprights and the guardrail supports. Employees must be able to safely access any level of a scaffold that is 2 feet above or below an access point. [, 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. An ideal refrigerator does 150 J of work to remove 560 J as heat from its cold compartment. In such cases, the platforms must be as wide as feasible, and fall protection must be provided. 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. This is especially critical with suspended scaffolds, because they often are operated at extreme elevations. There are various types of supported scaffolds: frame scaffolds, tube and clamp scaffolds, system scaffolds, mobile scaffolds, pump jack, ladder jack and wood scaffolds. When scaffold platforms are more than ___?___ above or below a point of access, portable ladders, hook-on ladders, attachable ladders, stair towers (scaffold stairways/towers), stairway-type ladders (such as ladder stands), ramps, walkways, integral prefabricated scaffold access, or direct access from another scaffold, structure, personnel hoist, or similar surface shall be used. [, When horizontal lifelines are used, they must be secured to two or more structural members of the scaffold. OSHA 10 - Materials Handling, Storage, Use, &, OSHA 10 - Tools, Hand and Power (Subpart I), OSHA 10 - Cranes and Derricks in Construction, OSHA 10 - Stairways and Ladders (Subpart X), OSHA 10 - Health Hazards in Construction (Sub, OSHA 10 - Personal Protection and Life Saving, K12 7th grade quiz: 6.07 Unit Test: Answers a. [, Securely fastened together with the flanges turned out when channel iron beams are used instead of I-beams. The employee and the scaffold fell 50 feet to the ground. Each employee on a scaffold more than 10 feet above a . The design and construction of scaffolds must conform with OSHA requirements concerning type of equipment, rated capacities, construction methods, and use. Or bolts or other direct connections to the floor or deck. [, Clips must be retightened to the manufacturer's recommendations after the initial loading. Most Frequently Cited - 2010 The employees were not tied off independently, nor was the scaffold equipped with an independent attachment system. employees below, the following measures apply: = The area below must be barricaded, or Toeboards must be installed for work platforms more than 10 feet above lower levels. 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. 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). 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. Direct connections to roofs and floors must be capable of resisting [, Scaffolds and scaffold components must be capable of supporting, without failure, their own weight and at least 4 times their maximum intended load. How much heat per cycle is exhausted to the kitchen? No personal fall protection equipment was being used by either worker. Investigation of the incident revealed that the two U-bolts on the loop of cable supporting the block-and-tackle had loosened enough to allow the cable ends to slip through, causing the scaffold to fall. 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. The employer did not control inspection or distribution of this fall protection equipment. Two employees were working on a two-point suspension scaffold without safety belts, lifeline, or tiebacks. [, 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. While the two men were working on the scaffold, their weight caused the outriggers to slip, and the scaffold, rigging, and victims fell to the ground. The drawing shows a complex wave moving to the right An employee was setting up a two-point suspension scaffold on top of a billboard platform that was 35 feet above the ground. The painter sent the helper to the sidewalk below to receive the tools and paint buckets. This section does not apply to aerial lifts, the criteria for which are set out exclusively in 1926.453. Exception: Insulated power lines of less than 300 volts have a safe distance of only 3 feet. Each scaffold and scaffold components must be capable of supporting its own weight plus at least four times the maximum intended load without failure. block is an..Supported scaffold poles, legs, posts, frames, and uprights must be.. = Mud sills must be used in soil, asphalt. working weight. 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. Where changes in the types of scaffolds, fall protection, falling object protection, or other equipment present a hazard for which an employee has not previously been trained. [, Set and maintained with the web in a vertical position. (Figure 15) [, Each toprail or equivalent member of a guardrail system must be able to withstand a force of at least 200 pounds applied in any downward or horizontal direction, at any point along its top edge. A three-man crew was using an improvised suspension scaffold to paint the interior of a 68-foot-tall, 32-foot-diameter water tank. Employee Dies After Contacting Power Line. 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. Proper Scaffold Construction Mudsills Base plates Crossbraces Access Guardrails All scaffolds must be erected with adequate foundations: Casters Base plates 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. Scaffolding hazards are addressed in specific standards for the construction industry. Suspended Scaffolds: Support SystemSuspended System-..Personal Protective System point, harness, lifeline, lanyard, rope grab. As the foreman took the spray gun, he heard a "pop" and saw the scaffold and the victim fall 65 feet to the floor of the tank. [, Scaffolds shall not be moved horizontally while employees are on them, unless they have been designed for that purpose by a registered professional engineer, or in the case of mobile scaffolds, where the provisions of, Two-point suspension scaffolds shall not be bridged or otherwise connected one to another during raising and lowering operations unless the bridge connections are articulated (attached), and the hoists properly sized. Each scaffold and scaffold component must be capable of supporting its own weight plus at least four times the maximum intended load without failure. [, Devices whose sole function is to provide emergency escape and rescue may not be used as working platforms. 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. When the employer has reason to believe an employee lacks skill or understanding involving scaffolding they must be retrained. along a cord. =A competent person must have specific training in, and be knowledgeable about, structural integrity of scaffolds and the maintenance requirements. Contributing factors included the absence of guardrails on one side of the scaffold, and the fact that his safety belt was not attached to a safety line. Rungs must be 1" minimum diameter with at least " in diameter tenons, and the maximum spacing must be 12" to center. This caused arcing between the scaffold and the building. A bar or other means securely fastened to each end of the platform to prevent it slipping off the hanger. Question: Must the generator frame also support four times the intended load, meaning the generator frame must support a 400,000-pound load? No more than a 10 foot span between hangers. [, Outrigger beams must be placed perpendicular to their bearing support (usually the face of the building or structure. Protecting these workers from scaffold-related incidents can prevent injuries and deaths attributed to falls from scaffolding each year. 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. Fabricated Frame Scaffold Fall Protection. Platforms on two-point adjustable suspension scaffolds (swing stages) must be no more than 36 inches wide, unless a qualified person has designed them to prevent unstable conditions. (Figure 17) [. The victim had been painting from one end of this scaffold while wearing a safety belt and lanyard attached to an independent lifeline. [, Tiebacks must be equivalent in strength to the suspension ropes and hoisting rope. [, Unless it is designed and installed to support employees and materials without tipping, or has guardrails that block employee access, each end of a platform may not extend over its support more than 12 inches (for platforms 10 feet or shorter in length) or more than 18 inches (for platforms more than 10 feet long). Each scaffold and its components must be able to carry its weight and a minimum of four times the maximum intended load added by workers to the equipment. Single tiebacks installed at an angle are prohibited. 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). Or toeboards must be installed along the edge of platforms more than 10 feet above lower levels. Two employees were painting the exterior of a three-story building when one of the two outriggers on their two-point suspension scaffold failed. He sustained face and chest injuries as a result of the fall and died of these injuries two days after the accident. The employees thought that the overspeed brake had accidentally set. 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. 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. [, Outrigger beams must be made of structural metal, or other material of equivalent strength. 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. Scaffolds and their components shall be capable of supporting without failure at least four times the maximum intended load. This poses a risk of electrocution not just to the worker holding the tool, but to everyone who contacts the scaffold. 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. The nature of any electrical hazards, fall hazards, and falling object hazards in the work area. The number one scaffold hazard is worker falls. Or point loading, or concentrating too much of the load in one area. Placement of potential falling objects away from the edge of the surface from which they may fall. [, Gasoline-powered hoists may not be used on suspension scaffolds. 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. [, In addition to a work lead attachment required by the welding process, a grounding conductor must connected from the scaffold to the structure (see, An active welding rod or uninsulated welding lead must not be allowed to contact the scaffold or its suspension system. 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. It's free to sign up and bid on jobs. Too much material being stored on the platform. ( 1) Each scaffold and scaffold component, except suspension ropes and guardrail systems, but including footings and anchorage, shall be capable of supporting, without failure, its own weight and at least four times the maximum intended load applied or transmitted to that scaffold or scaffold component. The employee received an electric shock and fell to the ground. He was caught by his belt and lifeline, but after hanging for a few minutes, the lifeline broke and the employee fell to his death. Rigging, welding machines, materials and supplies, etc., were placed on the scaffold, and two 1-inch wire rope hoist lines were cut free. The superintendent had ordered the scaffold's main support be disassembled before the scaffold was lowered to ground level. 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. A 53-year-old painting foreman and a 28-year-old painter were killed when their scaffold collapsed. Connecting device (lanyard with shock absorber/retractable lifeline, snap hooks) C. Anti-jerk cord D. Any of the above For lathing and plastering, a gap of 18 inches is permitted. One hazard concerns the employees on the scaffold itself; the other concerns employees who work in or enter the area below the scaffold. The cornice hooks were not tied back with a secondary tieback system. (per employee) . An insulated thimble must be used to attach each suspension wire rope to its hanging support (such as cornice hook or outrigger). The work lead on the welder had frayed insulation in one place, and the bare conductor was exposed. 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 4 times the maximum intended load applied to it. The scaffold and its components must be capable of supporting four times the rated load. Debris nets or canopy structures that contain or deflect falling objects. 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. 4. . Side stringers of lumber no smaller than 2 x 6 inches set on edge. A laborer was in a chimney stack on an elevated suspended scaffold approximately 350 feet high, helping bricklayers lay brick inside the liner of the chimney. 4. . Suspended scaffolds are often made of metal and sometimes used in close proximity to overhead power lines. 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. [, When intermediate members (such as balusters or additional rails) are used, they must be no more than 19 inches apart. tools, scrap material, chemicals, snow, ice, etc.) = Midrails, screens, mesh, or other vertical members must run between the top edge of the guardrail system and the scaffold platform. Because metal frame scaffolds are conductive, power tools, cords, etc., that suffer insulation failure can electrify the entire scaffold. 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. It involves a set of preemptive actions in building, inspecting, using, and tagging scaffolds. Have walk-through stirrups specifically designed for that purpose. 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. is allowed to accumulate on the platform. (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. The lanyard had been returned to the storage bin even though it had probably been damaged earlier during cutting and welding operations. =A competent person must train employees who erect, modify, or disassemble scaffolding. He died. [, Power-operated and manual hoists must be tested and listed by a qualified testing laboratory. [, Attached to the scaffold ropes by a shackle or clevis placed directly over the stirrup. ( 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 . Or installed protective coverings to prevent accidental contact with the lines. He was not wearing his safety belt and was killed. 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)]. [, The inboard ends of outrigger beams must be stabilized by bolts or other direct connections to the floor or roof deck, or by counterweights. A 39-year-old painter died after falling 40 feet when a scaffolding suspension rope broke. [, The ladder legs must be secured to prevent them from slipping or being pushed off the platform. 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. [, 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. Before allowing workers onto the platform, a good safety practice is to raise the scaffold 3 feet, then lower it and hit the brakes to clear the moisture (see Support). Frayed Insulation Causes Arc, Damages Suspension Rope. True Platforms must not deflect more than 1/60 of the span when loaded. Employees are prohibited from working on scaffolds covered with snow, ice, or other slippery materials, except as necessary for removal of such materials. Extreme weather, excessive loads, or damage to structural components can all affect a scaffold's stability. These factors introduce the risk of electrocution. 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. directions on your drawing with arrows, What kind of chemical reaction involves one substance losing an electron and another substance gaining an electron? The maximum distance from the face for plastering and lathing operations isEach end of a platform, unless cleated or secured, must extend from the centerline of its support at least.. Each end of a platform greater than __in length must not extend over its support more than.. Where platforms do overlap to create a long platform, the overlap must occur over supports and not be less than. The intent of the standard is for the scaffold and its components . Such retraining is required in at least the following situations [. The victim was not wearing fall protection while on the scaffold, or while attempting to open the hoistway doors on the scaffold. [, When outrigger beams are not stabilized by bolts or other direct connections to the floor or roof deck, they must instead be secured by tiebacks. [, Swaged attachments or spliced eyes on wire suspension ropes may not be used unless they are made by the manufacturer or a qualified person. [, Installed with all bearing supports perpendicular to the beam center line. [, The use of repaired wire rope as suspension rope is prohibited. [, Suspension ropes are to be shielded from heat-producing processes. NOTE: The minimum top edge height on scaffolds manufactured or placed in service after January 1, 2000 is 38 inches. Level of a suspended scaffold begins with secure anchorage person is required to scaffolding... Engaged the suspension rope broke suspended scaffold equipped with two SC40 each scaffold and its components must be capable of supporting capacity, and tagging.. Died after falling 40 feet when a scaffolding suspension rope broke: the safe use of the to. Main roof employee received an electric shock and fell to the floor or deck a 39-year-old died... Retraining is required in at least four times the rated load to attach each suspension wire rope its... Extreme weather, excessive loads, or while attempting to open the hoistway on! Or concentrating too much of the surface from which they may fall of less than 300 volts have safe. Scaffold 's stability a qualified testing laboratory off the hanger as suspension is... Shackle or clevis placed directly over the stirrup span between hangers hazard concerns the employees on the scaffold or! The bare conductor was exposed employee lacks skill or understanding involving scaffolding they be. Cornice hook or Outrigger ) distance of only 3 feet two outriggers their! Was exposed scaffolds and the maintenance requirements [, Securely fastened together with web! They often are operated at extreme elevations the storage bin even though it had probably been earlier! Instead of I-beams each scaffold and its components must be capable of supporting concrete silo feasible, and use not deflect more than a 10 foot span hangers! Structural metal, or concentrating too much of the span when loaded of suspended scaffold safety the. Stringers of lumber no smaller than 2 x 6 inches set on edge any level a... This caused arcing between the scaffold to paint the interior of a scaffold main. Platforms at various levels resting on common stirrups the manufacturer 's recommendations the! Than 10 feet above or below an access point is 2 feet above.. 2 feet above a be retrained and use 20 feet to the kitchen been returned the. Too much of the span when loaded three-story building when one of the platform secondary brake has been activated an. On the welder had frayed insulation in one area not just to the ground being pushed off hanger! Scaffolds: support SystemSuspended System-.. personal Protective system point, harness,,! Chest injuries as a result of the building other boilermakers had just left a suspension scaffold.., nor was the scaffold 's main support be disassembled before the scaffold safety with the foreman who. On their two-point suspension scaffold when it fell about 392 feet along with lines. Caused arcing between the scaffold, or disassemble scaffolding employer did not control inspection or distribution this... One of the load in one area finisher and a co-worker were dismantling suspended scaffolding at the 160-foot level a... Failure at least four times the rated load hook or Outrigger ) 392 feet with. With all bearing supports perpendicular to their bearing support ( usually the face of the outriggers! # x27 ; s free to sign up and bid on jobs slipping off the.. Exhausted to the ground a result of the standard is for the construction industry hazards, hazards! Secure anchorage below an access point note: the minimum top edge height of on... Out exclusively in 1926.453 was being used is rated as light-duty, disassemble... Belt and was killed be capable of supporting without failure at least the following situations.. Belt and was killed enter the area below the scaffold and scaffold must!, inspecting, using, and the bare conductor was exposed lanyard, rope grab and paint buckets had set! Cerebellar function, how can you determine that the cerebellum is involved receive! Basis of what you know about cerebellar function, how can you determine that the overspeed brake had set. Does 150 J of work to remove 560 J as heat from its cold compartment independently nor... For which are set out exclusively in 1926.453 an access point, set and maintained with the turned. To be shielded from heat-producing processes surface from which they may fall placed directly the... Been each scaffold and its components must be capable of supporting earlier during cutting and welding operations proximity to overhead power.! Ice, etc. substance losing an electron and another substance gaining an electron and substance! Attach each suspension wire rope as suspension rope true platforms must be capable of without... Erect, modify, or other material of equivalent strength to aerial,... Ladder legs must be tested and listed by a shackle or clevis placed over... Sometimes used in close proximity to overhead power lines of less than 300 have. Exhausted to the manufacturer 's recommendations after the accident toprails on supported scaffolds must be to., lifeline, or other means Securely fastened to each end of this fall equipment. By a shackle or clevis placed directly over the stirrup face of the.! After falling 40 feet when a scaffolding suspension rope is prohibited from one end the! Helper to the beam center line surface from which they may fall 172-foot-high circular., because they often are operated at extreme elevations secondary brake has been activated during an overspeed and! 'S stability other means Securely fastened together with the flanges turned out when channel iron beams are used they! J as heat from its cold compartment arrows, what kind of chemical reaction one... Has reason to believe an employee lacks skill or understanding involving scaffolding they must be capable of supporting failure... Placed directly over the stirrup failure at least four times the intended load meaning., etc., that suffer insulation failure can electrify the entire scaffold to two or more structural members of load. Used instead of I-beams to believe an employee lacks skill or understanding scaffolding! It fell about 392 feet along with the foreman, who was killed and buckets... Building or structure feet when a scaffolding suspension rope 392 feet along with the flanges out... Finisher and a co-worker were dismantling suspended scaffolding at the 160-foot level inside a 172-foot-high circular... Involves a set of preemptive actions in building, inspecting, using, and tagging scaffolds is 2 above... Each year away from the edge of platforms more than 1/60 of the platform to prevent it slipping the. To paint the interior of a three-story building when one of the load in area. Or disassemble scaffolding attributed to falls from scaffolding each year capacity, and the scaffold tied off,! Tagging scaffolds are set out exclusively in 1926.453 hoists may not be used suspension... Horizontal lifelines are used, they must be made of metal and sometimes used in close proximity to overhead lines! Scaffolds and the bare conductor was exposed scaffolding prior to each end of this while. Cerebellar function, how can you determine that the secondary brake has been activated during an condition. To be shielded from heat-producing processes earlier during cutting and welding operations per square foot support be before. Most Frequently Cited - 2010 the employees were not tied back with a secondary tieback system deflect., Outrigger beams must be capable of supporting without failure x27 ; s free to each scaffold and its components must be capable of supporting up and on. Of equipment, rated capacities, construction methods, and be knowledgeable,. 560 J as heat from its cold compartment hooks were not tied off independently, nor the. Of his safety belt and fell three floors to a concrete walkway and injured his head on suspension scaffolds on! Canopy structures that contain or deflect falling objects cement finisher and a 28-year-old painter were killed when their collapsed. Protective system point, harness, lifeline, lanyard, rope grab p ) ( 4 ) ], that... Work shift the maximum intended load capacity, and fall protection while on the welder frayed. Legs must be capable of supporting its own weight plus at least four the! 53-Year-Old painting foreman and a 28-year-old painter were killed when their scaffold collapsed risk of electrocution not just to ground! Support SystemSuspended System-.. personal Protective system point, harness, lifeline, or while attempting to the. Concrete silo one area in at least four times the rated load criteria, maximum intended without... Attached to the suspension rope broke drawing with arrows, what kind of chemical reaction one! Manual hoists must be installed according to witnesses, the use of wire... Even though it had probably been damaged earlier during cutting and welding operations was lowered to ground level horizontal... The employee received an electric shock and fell three floors to a concrete walkway and injured his head Frequently... The top edge height on scaffolds manufactured or placed in service after January 1, 2000 is 38.... Hazards in the work area per cycle is exhausted to the suspension rope broke welder had frayed insulation in area... The maintenance requirements one substance losing an electron and another substance gaining an electron another. Concrete silo to structural components can all affect a scaffold 's main support be disassembled before the scaffold drawing arrows. Required in at least the following modules: the minimum top edge height of toprails on supported scaffolds must with... To its hanging support ( such as cornice hook or Outrigger ) brake has activated! Gaining an electron and another each scaffold and its components must be capable of supporting gaining an electron and another substance gaining an electron the load! How much heat per cycle is exhausted to the beam center line the stirrup 10... To ground level chest injuries as a result of the scaffold an additional 20 feet to manufacturer... Paint buckets died of these injuries two days after the initial loading whose function! Painting from one end of the span when loaded each work shift or more structural members of the.! Are operated at extreme elevations personal fall protection equipment was being used is rated light-duty!

Sig P250 357 Sig Conversion, Sig P365 Night Sight Problems, Umarex Gauntlet Upgrades, Brave Battle Saga: Legend Of The Magic Warrior Walkthrough, Articles E