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. The type of scaffolding being used is rated as light-duty, or 25 pounds per square foot. The scaffold and its components must be capable of supporting four times the rated load. 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. They attempted to move a hook to reposition it when the hook slipped off the parapet, causing one end of the scaffold to drop. So a 10 foot span (120 inches) cannot deflect more than: 2 inches The superintendent had ordered the scaffold's main support be disassembled before the scaffold was lowered to ground level. =Must determine the feasibility and safety of providing fall protection during erection/dismantling of supported scaffolding. Therefore, assessing personnel abilities is a vital part of scaffold design, erection, maintenance, and use, and should not be overlooked in scaffold inspections. A worker was on a two-point suspension scaffold that was suspended by cornice hooks at the top of a parapet wall (approximately 42 ft.). Six other boilermakers had just left a suspension scaffold when it fell about 392 feet along with the foreman, who was killed. 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. The hoistway area was not guarded. Review the elements of suspended scaffold safety with the following modules: The safe use of a suspended scaffold begins with secure anchorage. [, Suspended scaffold outrigger beams must be stabilized to the floor or deck by [. 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. In such cases, the platforms must be as wide as feasible, and fall protection must be provided. Between 20 and 30 inches above the work platform for a midrail. [, 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. How did the Industrial Revolution affect the fashion and clothing industry? [, When horizontal lifelines are used, they must be secured to two or more structural members of the scaffold. [, Set and maintained with the web in a vertical position. Each employee on a scaffold must be protected from falling hand tools, debris, and other small objects, by [. 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. How much heat per cycle is exhausted to the kitchen? [, Gears and brakes of power-operated hoists used on suspension scaffolds must be enclosed. 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. =be plumb and braced to prevent swaying and displacement. The front edge of all platforms shall not be more than ___?___ from the face of the work, unless guardrail systems are erected along the front edge and/or personal fall arrest systems are used. An employee was restoring a building's exterior. There are twenty-eight OSHA-approved State Plans, operating state-wide occupational safety and health programs. = Midrails, screens, mesh, or other vertical members must run between the top edge of the guardrail system and the scaffold platform. 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. Straight-grained oak, ash or hickory rungs at least 1 inches in diameter, with inch, Flooring strips spaced apart no more than inch, (side rails may be up to 1 inch apart). Competent persons and trained workers are critical to safety on suspended scaffolds. Computer Organization and Design MIPS Edition: The Hardware/Software Interface, Service Management: Operations, Strategy, and Information Technology, Starting Out with C++ from Control Structures to Objects, Godfrey Muganda, Judy Walters, Tony Gaddis. [, Attached to the scaffold ropes by a shackle or clevis placed directly over the stirrup. along a cord. This section does not apply to aerial lifts, the criteria for which are set out exclusively in 1926.453. 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. An employee was setting up a two-point suspension scaffold on top of a billboard platform that was 35 feet above the ground. 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. The victim died from his injuries. A patient suffers brain damage in an automobile accident. 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. [, Suspended scaffold outrigger beams must be stabilized by [. 4. . Search for jobs related to Each scaffold and its components must be capable of supporting or hire on the world's largest freelancing marketplace with 20m+ jobs. [, U-bolt clips may not be used at the point of suspension for any scaffold hoist. Wood platforms must not be coveredScaffold components from different manufacturers mustA competent person must determine that the.. Three workers were on a two-point suspension scaffold rated at 500 lbs. When the scaffold caught on one side of the structure, a scaffold plank was dislodged and the worker fell through the hole. [29 CFR 1926.451(b)(3) and 29 CFR 1926.451(b)(3)(ii)]. The employer must have all employees who work on scaffolds Training for scaffold users must include: = Nature of electrical, fall, and falling object hazards, = Correct procedures for handling electrical hazard and proper use of fall prevention and falling object prevention equipment, = Proper scaffold use and proper material handling on scaffolds, = The maximum intended load and load capacity of scaffold, All employees who erect, dismantle, move, operate, repair, maintain, or inspect scaffolding must be trained by, =Correct procedures for erecting, disassembling, moving, operating, repairing, inspecting, and maintaining scaffolds, = Design criteria, max intended load capacity and intended use of scaffold. Where inadequacies in an affected employee's work indicate that the employee has not retained the necessary proficiency. [, 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. is allowed to accumulate on the platform. Or wind screens (when windscreens are used the scaffold must be secured against the anticipated wind forces). [, Devices whose sole function is to provide emergency escape and rescue may not be used as working platforms. 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. The outriggers were not tied off or otherwise secured. building materials, paint roller extensions, scaffold components) that may be handled on them, come closer than 10 feet to the power line. Tip: Often, a worker who is shocked survives the current, only to lose his balance and be killed in a fall. 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. upward and which are moving downward. Hazards and Possible Solutions At about the 84-foot level, he slipped off the platform and fell to his death. Protecting these workers from scaffold-related incidents can prevent injuries and deaths attributed to falls from scaffolding each year. Placement of potential falling objects away from the edge of the surface from which they may fall. Scaffolds and their components shall be capable of supporting without failure at least four times the maximum intended load. This was done without inspecting the hoist for sufficient cable length. Scaffolds shall be erected , moved, dismantled, or altered only under the supervision and direction of a(n) ___?___ qualified in scaffold erection, moving, dismantling, or alteration. The workers were wearing the available safety harnesses and lifelines but had not connected the lifelines. [, Scaffold platforms must be able to support their own weight, plus four times the maximum intended load. The second type is suspended scaffolds, which are one or more platforms suspended by ropes or other non-rigid, overhead support. Two-point adjustable suspension scaffolds, also known as swing-stage scaffolds, are perhaps the most common type of suspended scaffold. Scaffold incidents causing injury or death to workers is often the result of either the planking or support giving way, by the worker slipping, the absence of fall protection, or being struck by a falling object. Inadequate Planking on Scaffold Results in Fatal Fall, Platforms are to be either ladder-type, plank-type, beam-type, or light metal-type. [, 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. =Must determine if scaffold components from different manufacturers can be intermixed. Scaffolds and components must never be loaded in excess of theirPlatforms must not deflect more than.Fabricated frame scaffolds over.. 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