Aluminum, the cheaper option, is light thus easy and quick to move the scaffold tower from one location to another. Extreme weather or damage to structural components can also affect a scaffold's stability. USA (v. 2008) 22 Tubular Welded-frame Scaffolds. To ensure the scaffold is "square", use a tape measure and measure the distance between opposite corners. Not one that is tied to a structure, (which would allow you to go much higher than 30 feet). Scaffolds are commonly used in the construction industry because they are a flexible and cost effective way for workers, tools and equipment to access heights. Shapes materials to prescribed measurements, using saws, chisels, and planes. The maximum intended load and the load-carrying capacity of the scaffold. This individual must supervise all scaffold assemblies, changes, movement, or dismantling. Unsafe scaffolding has the potential to result in death or serious . Supported scaffold poles, legs, posts, frames, and uprights shall be plumb (i.e. [, As frames are stacked, cross braces must be of such length as will automatically keep the scaffold plumb, level, and square. [, Uniform tread depth, within -inch, for each flight of stairs. There are two kinds of falling object hazards associated with scaffolds. The scaffold should be plumb, level and square. Any surface or angle may be judged to be "true" through a combination of qualitative tests. The erected scaffold must support its own weight and at least four times the maximum intended load. Metal pumpjack scaffolds cannot be more than 13.7 m in height; and must be braced every 4.6 m. Pumpjack scaffolds with supports made of wood must not be more than 7.3 m in height and must be braced every 3 m. All joints must be Legs, posts, frames, poles, and uprights must be on base plates and mud sills, or a firm foundation and, be plum b and braced. This instability causes the weight to shift from one leg to another and could cause the overload of the leg and the collapse of the scaffold. They can decide on which material to use and also the desired dimensions. Wooden platforms (i.e. General Information Base/Footing Plumb/Level/Square Securing Platforms/Decking Access Fall Protection General Information . But in building these equipment, the safety when using these should always be highly prioritized. by Grant Davis | Construction, Insurance, Safety Tips | 0 comments. [, All brace connections must be secured to prevent dislodging. Not tied. Authorized Person General Guidelines. The size of the mud sill shall be based on the type of soil the scaffold will be erected upon. The maximum extension for a screw jack is 18 inches high. Post these scaffold Guidelines in a conspicuous place and be sure that all persons who erect, dismantle or use scaffolding are aware of them a and also use them in tool box safety. Scaffolding. Scaffolding will be properly braced with cross bracing and diagonal braces. One exception is when the scaffold platform is within 14 inches of the face of the work. Warped. While sitting or kneeling on a fixed deck plank attached to a fabricated frame scaffold, a worker was pulling a 16-foot long 2x4 off the bucket of an excavator. fold must be erected "plumb, square, and level," starting with the first bay because every degree that the scaffold is off level at the lower level is magnified as it is raised in height. An employee was constructing the third level of a tubular, welded-frame scaffold while standing on the second level. [, A stair rail consisting of a toprail and a midrail on each side of the stairway. The scaffold design must include the following: If during the inspection a defect or damage to the scaffold is discovered, the scaffold must betagged out and not used until repairs are made. All brace connections must be secured to prevent dislodging. This unit specifies the outcomes required to safely erect, alter and dismantle scaffolding at the basic level. C. Survey the job site. Where the frame of the scaffold will be used for access, the manufacturer must specify in writing that it was designed for such purposes. Fasten all couplers and/or connections securely before assembling the next level. [, A toprail of each stair rail system capable of serving as a handrail, unless a separate handrail is provided. When a supported scaffold reaches a height that is more than four times its minimum base dimension (4:1), it must be restrained by guys, ties, or braces to prevent it from tipping. [, Frames and panels must be connected by cross, horizontal, or diagonal braces, alone or in combination, which secure vertical members together laterally. bearer) at an angle other than a right angle, shall be laid first. Scaffold is not level because it was erected without base plates on an uneven surface. Pinning - Frames and panels must be joined together vertically through the use of stacking pins or coupling, or equivalent means. Supported scaffold poles, frames, uprights, etc. To counteract this, the scaffold must be braced or tied off to a stable structure such as a structural steel. Because the frames are stacked, the cross braces have to keep the scaffold plumb, level, and square. is allowed to accumulate on the platform. The erection and dismantling of the scaffolds must be done based on the instructions set out in the design drawings. Hardware should be included to fasten the planks into place. Cross-braces of the proper length must be used to ensure that the scaffold will remain plumb and rigid. Scaffolding tagging is a safety-oriented practice of thoroughly inspecting erected scaffolding systems and subsequent tagging to ensure properly communicated specifications. Crawling Board. [, When moving platforms to the next level, the existing platform must be left undisturbed until the new end frames have been set in place and braced. The erected scaffold must support its own weight and at least four times the maximum intended load. Do not force frames or braces to fit - level the scaffold until proper fit can easily be made. The main components are scaffolding tubes, scaffold clamps, and base plates. Supported scaffold poles, frames, uprights, etc. [, Be positioned so that their bottom step is not more than 24 inches above the scaffold supporting level, [, Have rest platforms at maximum vertical intervals of 12 feet, [, Have a minimum step width of 16 inches, except for mobile scaffold stairway-type ladders, which shall have a minimum step width of 11 inches [, Have slip-resistant treads on all steps and landings. [, 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. [, 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. [, Non-mandatory examples of criteria that will enable an employer to comply with, Scaffolds are to be erected, moved, dismantled, or altered only by experienced and trained employees who have been selected for that work by the competent person. The competent person should use this checklist for daily inspections of the scaffold. [, Slip-resistant surfaces on treads and landings. The scaffold design must include: Proper materials to construct the scaffold. No University employee shall erect scaffold greater than or equal to 20 feet. Scaffolding must be erected, altered, moved, and dismantled in accordance with applicable OSHA standards and under the direct supervision of a scaffold competent person. (k) The poles, legs, or uprights of scaffolds must be plumb, and securely and rigidly braced to prevent swaying and displacement. (Figure 13) [29 CFR 1926.451(b)(3) and 29 CFR 1926.451(b)(3)(ii)]. Guardrails May Have Saved Him, Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Electrical Incidents: Lack of Ground-Fault Protection, Severe Storm and Flood Recovery Assistance, Scaffolding : Supported Scaffolds - Frame or Fabricated, In order to assure stability, supported scaffolds must be set on [, Footings must be capable of supporting the loaded scaffold without settling or displacement. Tube and coupler scaffold design must comply with 29 CFR 1926.451.452. Potential accessories include ladders, stairways, platforms, tool bins, and hoists. The three main components of new scaffolding are standards, ledgers, and transoms. The work deck must be fully planked. In Asia, bamboo is used as a construction material. missing parts due to area obstructions). Is secured to prevent lateral movement. Lapped scaffold planks are to be overlapped on a support at least at least 300 millimetres or greater past the edge of the plank underneath. 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. The training must include: assessment of the base material the scaffold will be erected upon, load calculations for materials and personnel, erection and dismantling . Plumb and level all scaffolds as erection proceeds. [29 CFR 1926.451(e)(9)(i)]. Supported scaffold poles, legs . 3. A specific access, such as a mounted ladder, must be used. All diagonal . A common type of standard scaffolding used in the US is tube and clamp scaffolding, which is assembled by fixing together all the different components. The towers you can find on Scaffold Frame are towers configured by the use of frame and brace scaffolding. [, Scaffold platforms must be able to support their own weight, plus four times the maximum intended load. Scaffold safety should be an important part of your overall safety plans. [, A space of at least 3 inches between handrails, or stair rails used as handrails, and other objects. [, Be used only to support personnel, unless the scaffold has been designed for other loads by a qualified engineer and built to withstand the tipping forces caused by other loads. or more per square foot. [, Forklifts shall not be used to support scaffold platforms unless [. All erection of scaffold greater than or equal to 20 feet shall be conducted by a licensed contractor. Plumb and brace poles, legs, posts, frames and uprights to prevent swaying and displacement. . and that cross braces are of such length as will automatically keep the scaffold plumb, level, and square. If uplift could cause the components to separate, locking pins must be used and the components secured. Tip: A level may be used frequently during assembly to guarantee that new structural components remain in line. Move the scaffold into your desired position, and make sure it is level and secure. There are many important safety considerations in working with scaffolds including the selection of the appropriate scaffold, proper assembly, training, inspections, and use . The focus of this position will be to construct, erect, install, and repair structures and fixtures of wood, plywood, and wallboard, using carpenter's hand tools and power tools, conforming to . A scaffold must be erected "plumb, square, and level," because: If a scaffold is built even a few degrees off plumb, the resulting instability could cause the weight of the scaffold to shift, potentially causing the overloading of one leg and the eventual collapse of the scaffold [, Uniform riser height, within -inch, for each flight of stairs. Tip: For the same reason, cleats or other means of connecting planks should be on the underside. Screw jacks must be used to level scaffolding on uneven surfaces. Workers are most vulnerable to fall hazards when climbing on or off a scaffold. Attach tags at the access point of the scaffold. (www.scaffoldframe.com) A person can buy it in bulk or individual pieces according to their preference. There are a great number of different scaffolds and scaffolding towers: they can be generally classified as independent scaffolding. Avoid propping the scaffolding frames up on the side of the bed. [, Be specifically designed and constructed for use as ladder rungs. 4. Except when used only as a walkway, the platform is the work area of the scaffold. For long (running) scaffolds, guys, ties, and braces shall be installed at each end of the scaffold and at horizontal intervals not to exceed 30 feet. . The maximum extension of the plank cannot be more than 12 inches for planks that are 10 feet long or less. _____ 1. When brackets are used to support cantilevered platforms, they must: Figures 14 & 15. Erect plumb, square and rigid with all brace connections securely fastened. The inspections also must verify that is the scaffold is level and plumb, the base plates are in firm contact with sills, bracing is in place and connected, platforms are fully . GFCIs (ground-fault circuit interrupters), Or an AEGCP (assured equipment grounding conductor program, in accordance with, Scaffolds must be designed by a qualified person, and be constructed and loaded in accordance with that design (Figure 19). | QUESTIONS? Bracing Connect panels and frames with diagonal, horizontal, or cross braces along or as a combination, in order to laterally secure the vertical members. Scaffolding is naturally unstable because it is usually a tall structure with a narrow base. Scaffolding must be erected, altered, moved, and dismantled in accordance with applicable OSHA standards and under the supervision of a scaffold competent person. Ladders that are a part of the scaffolding system, such as hook-on and attachable ladders, shall be positioned so that the bottom rung is not more than 24 inches above the supporting level. 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