The preferred industry practice at the beginning of a shift is to raise the scaffold 3 feet, hit the brakes, then lower the scaffold and hit the brakes again. Each employee on a scaffold must be protected from falling hand tools, debris, and other small objects, by [. [, The suspension wire rope must be covered with insulating material at least 4 feet (1.2 m) above the hoist. The number one scaffold hazard is worker falls. Proper Scaffold Construction Mudsills Base plates Crossbraces Access Guardrails All scaffolds must be erected with adequate foundations: Casters Base plates The number one scaffold hazard is worker falls. Examination of the lanyard after the event showed burn damage at several places, including the point of failure. . =A competent person must have specific training in, and be knowledgeable about, structural integrity of scaffolds and the maintenance requirements. Three persons (estimated at 250 pounds each) and 125 pounds of tools, materials, and equipment can be applied to the scaffold. 1. Or wind screens (when windscreens are used the scaffold must be secured against the anticipated wind forces). A 53-year-old painting foreman and a 28-year-old painter were killed when their scaffold collapsed. 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. block is an..Supported scaffold poles, legs, posts, frames, and uprights must be.. = Mud sills must be used in soil, asphalt. All scaffolds must be erected with adequate foundations.Concrete. 4 A means of access must be provided to a scaffold platform if there is no existing access within ___ feet of the platform 2 Repaired wire rope is acceptable for use on suspended scaffolds Two-point adjustable suspension scaffolds, also known as swing-stage scaffolds, are perhaps the most common type of suspended scaffold. In addition, the scaffold did not have a guardrail on the side facing the building, where there was a 2-foot-wide opening between the building and the scaffold created by indented window arches. Supported scaffolds over 75 feet (22 860 mm) in height must be designed by a registered design professional. [, Do not load the scaffold or any component parts beyond their maximum capacity (their own weight and 4:1 the maximum intended load). There are twenty-eight OSHA-approved State Plans, operating state-wide occupational safety and health programs. Unsafe/Unused Fall Arrest Systems Result in Fatalities. 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. Scaffolds and their components shall be capable of supporting without failure at least four times the maximum intended load. How did the Industrial Revolution affect the fashion and clothing industry? The type of scaffolding being used is rated as light-duty, or 25 pounds per square foot. Most Frequently Cited - 2010 A 33-year-old male caulking mechanic was killed while sharing a two-point suspension scaffold that had already been rigged by workers from a window washing firm. Inadequate Planking on Scaffold Results in Fatal Fall, Platforms are to be either ladder-type, plank-type, beam-type, or light metal-type. 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. One hazard concerns the employees on the scaffold itself; the other concerns employees who work in or enter the area below the scaffold. [, On suspended scaffolds with horizontal lifelines that may become vertical lifelines, the devices used to connect to the horizontal lifeline must be capable of locking in both directions. 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. Since the scaffold was not grounded, it became energized. [, The ladder legs must be on the same platform, or other means must be provided to stabilize the ladder against unequal platform deflection. He was killed. [, Swaged attachments or spliced eyes on wire suspension ropes may not be used unless they are made by the manufacturer or a qualified person. Which shotgun choke is best for hunting a large, slow bird, such as a turkey? 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). The employees were not using fall protection, and the scaffold was not tied off. [, Evidence that the secondary brake has been activated during an overspeed condition and has engaged the suspension rope. The co-worker stated that he saw the victim fall and jerk upward as the lanyard caught him. The co-worker was left hanging on to the remaining scaffold rope. A bar or other means securely fastened to each end of the platform to prevent it slipping off the hanger. Where changes at the worksite present a hazard for which an employee has not previously been trained. So a 10 foot span (120 inches) cannot deflect more than: 2 inches 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. (Figure 16) [, Nothing that could cause a slip, trip or fall (i.e. [, Ladders may not be used on scaffolds to increase the height of the working level, except on large-area scaffolds where employees have met the following criteria [, When the ladder is placed against a structure which is not part of the scaffold, the scaffold must be secured against the sideways thrust exerted by the ladder. [. 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. 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. Each platform unit on all working levels of scaffolds must be fully.Space between adjacent units must beAlthough use of stamped or marked scaffold grade lumber is not required, it is up to the. The 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)]. 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. 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. When the left scaffold rope broke and the scaffold collapsed, one employee was killed and another fell to a nearby roof and broke both arms. 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 [. Refer to the.Equipment must.Proper distance from all. what must be utilized? Why is creativity useful when identifying resources? Safe points of anchorage include structural members of buildings, but not standpipes, vents, electrical conduit, etc., which may give way under the force of a fall. [, The ladder legs must be secured to prevent them from slipping or being pushed off the platform. Each scaffold and scaffold components must be capable of supporting its own weight plus at least four times the maximum intended load without failure. Two employees were painting the exterior of a three-story building when one of the two outriggers on their two-point suspension scaffold failed. Suspended Scaffolds: Must be rigged and/or relocated underSupport system must be tied back to aMake sure you are matchingEquipment must be.. 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). An employee was on a two-point suspension scaffold, approximately 25 ft. high, when the guardrail gave way. 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. True Platforms must not deflect more than 1/60 of the span when loaded. ( a) Capacity. As the employees went up in the scaffold, the right side fell to the ground from an elevation of 20 feet. 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. 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. 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