Except when used only as a walkway, the platform is the work area of the scaffold. Materials being hoisted onto a scaffold must This unit specifies the outcomes required to safely erect, alter and dismantle scaffolding at the basic level. All brace connections shall be . Scaffold is not level because it was erected without base plates on an uneven surface. They are frequently used in one or two tiers by residential contractors, painters, etc., but their modular frames can also be stacked several stories high for use on large-scale construction jobs. [, 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. The planking used must be "scaffold grade.". Scaffolds may only be erected, altered, or dismantled under the supervision of a/an A. Platform/decking planks may be made of solid sawn wood, manufactured wood, manufactured steel, or manufactured aluminum. Scaffolding shall be designed by a qualified and competent . [, Fall protection consists of either personal fall arrest systems or guardrail systems meeting OSHA requirements. Consider such platforms for added stability and safety. The scaffold was not secured to wooden footing supports, nor was it tied to the building. [, Nothing that could cause a slip, trip or fall (i.e. The picture above describes TRUE. The maximum intended load and the load-carrying capacity of the scaffold. In the same vein, a "true" corner would be squared to exactly 90 degrees. [29 CFR 1926.451(c)(1)], Scaffolds may 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 29 CFR 1926.452(w) are followed. It's best to have everything as low as possible so parts don't get blown or bounced out. [, 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. Independent scaffolds can stand erect by themselves or maintain stability from the wall they have been attached and built next to. 2. Guys, ties, and braces must be installed at locations where horizontal scaffold components support both inner and outer legs. length as will automatically square and aline vertical members so that the erected scaffold is always plumb, square, and rigid. Because the frames are stacked, the cross braces have to keep the scaffold plumb, level, and square. The standard dimensions are 5 foot and 7 foot long. Personal fall protection must be required and provided by the employer where the installation and use of such protection is feasible and does not create a greater hazard. Several days later, a crew of seven workers was instructed to replace the scaffold and finish painting the sign. 3. 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. [. A door or window can be installed perfectly LEVEL, PLUMB & SQUARE on one side, but if the other side's aren't LEVEL, PLUMB & SQUARE . [, Uniform tread depth, within -inch, for each flight of stairs. Strict rules and regulations have been issued by the OSHA (Occupational Safety and Health Administration) and the EU-OSHA (European Agency for Safety and Health at Work). The scaffold was constructed on a poured concrete floor and had been leveled. Attach tags at the access point of the scaffold. Before starting any scaffold project, the employer should conduct a hazard assessment to ensure the safety of workers. The work deck must be fully planked. e. It is strong, dependable, and is relatively low in cost. Erect plumb, square and rigid with all brace connections securely fastened. [, When platforms must overlap because a scaffold changes direction, such as turning a corner, platforms that rest on a bearer at an angle other than a right angle shall be laid first, and platforms that rest at right angles over the same bearer shall be laid second, on top of the first platform. Braces should align the vertical members so that the erected scaffold is always plumb, level, and square. Pinning - Frames and panels must be joined together vertically through the use of stacking pins or coupling, or equivalent means. [, Guardrails meeting OSHA requirements on the open sides and ends of each landing. [, 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.). A 28-year old carpenter and a 31-year old laborer were electrocuted. For example, if the base width is three feet, the first vertical tie will be (3 feet x 4) 12 feet from the ground. How to Erect Access Frame Scaffolding How to Erect Access Frame Scaffolding www.worksafebc.com Select . Installed protective coverings to prevent accidental contact with the lines. Extreme weather or damage to structural components can also affect a scaffold's stability. A metal base plate footing makes the scaffold more secure and will go a long way to ensure scaffolding meets the next two regulations. Make sure the scaffold is stable. Scaffolding is naturally unstable because it is usually a tall structure with a narrow base. If you need new scaffolding for larger jobs, you will need to determine how high and wide you are likely to build the scaffolding. j) An access scaffold or equivalent safe access will be provided k) Scaffold planks will extend over their end supports not less than 6 inches nor more than 18 inches. We pride ourselves on exceeding our clients expectations in every interaction to make sure that our clients know how much we value and appreciate their business. Our goal is to achieve long-term relationships focused on bringing value to your risk management and insurance programs. Do not force frames or braces to fit - level the scaffold until proper fit can easily be made. [, When midrails are used, they must be installed at a height approximately midway between the top edge of the guardrail system and the platform surface. This will determine how many of each component you will need. [, A stair rail consisting of a toprail and a midrail on each side of the stairway. Stability and durability are the key components for the scaffold towers to be safe. Check the level again and plumb if necessary. Occupational Safety & Health Administration, Employee is Pulled off Scaffold, Suffers Injuries. Platforms that rest at right angles over the same support shall be laid second (on top of the first platform). (. The scaffold should be plumb, level and square. The base and mud sill must provide a solid surface for the feet to sit upon so that the scaffold doesn't sink, move, settle, or shift. Secure access to the scaffold. System Scaffolding. Supported scaffold poles, frames and uprights must be plumb and braced to prevent any displacement caused by swaying. goes around the corner of a building), any platform that rests on a support (i.e. C. Survey the job site. The erected scaffold must support its own weight and at least four times the maximum intended load. Tip: Separation of frames can occur in high winds (uplift), or when workers climb endframes, overload the platform, or strike the scaffold with tools, materials, etc. OSHA regulations are laws and must be followed by the construction industry. Some people would like their own customized scaffold towers. [29 CFR 1926.451(e)(9)(i)]. _____ 1. These are only a few basic physical structures of scaffold towers. Scaffold Frame keeps only high grade steel scaffolding in inventory, but aluminum scaffold is available on request. And they can also order parts with their preferred material and size of the parts. Personal Fall Arrest System. Greater variations in riser height are allowed for the top and bottom steps of the entire system (not for each flight of stairs). [, A space of at least 3 inches between handrails, or stair rails used as handrails, and other objects. The poles, legs, or uprights of scaffolds must be plumb, and securely and rigidly braced to prevent swaying and displacement. Platforms and walkways, in general, must be at least 18 inches wide. 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. Supported scaffold poles, frames, uprights, etc. [, Scaffold components manufactured by different manufacturers are not allowed to be modified to make them fit together, unless a competent person determines that the resulting scaffold is structurally sound. We commit to utilizing our collective talent to support your risk management and insurance goals. The frames must be plumb and level and spaced to adequately support the loads. OSHA has standards that apply specifically to the steps that must be taken to assure a stable scaffold base. NOTE: Except where indicated, these requirements also apply to manually propelled, pump jack, ladder jack, tube and coupler, and pole scaffolds as well as the specialty scaffolds described in the Supported Scaffolds module. Fasten all couplers and/or connections securely before assembling the next level. Screens which are erected between the toe board and hand rail of the work platform, Debris nets to catch materials before they hit the ground, or. (True or False) _____ 3. This will have an impact on what components you will need as well as how many of each component will be necessary to complete your tasks. [, 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 (i.e., nailed together) to prevent movement. [, As frames are stacked, cross braces must be of such length as will automatically keep the scaffold plumb, level, and square. Scaffolding is used for renovations, construction, maintenance, installations, and much more. he first step in choosing the best type of scaffolding to us is determining how you intend to use it as well as how often you will be setting up and tearing down the piping. Make sure that a competent person inspects the scaffold before each work shift. A specific access, such as a mounted ladder, must be used. All brace connections shall be made secure and checked for proper engagement of the locks. This topic discusses supported scaffolds. In such cases, the gap will be as small as possible and not exceed 9 inches. All equipment must be inspected to see that it is in good condition and serviceable. [29 CFR 1926.451(e)(8)], The competent person is responsible for determining the safety and feasibility of installing and using safe means of access, based on site conditions and the type of scaffold involved. CALL US AT 877-997-2233. To check a scaffold for being plumb, use a level on two opposite uprights. Catenary Scoffold. the side of a building) basically serves as the fall protection system. They can also choose if they want it mobile or stationary. [, Guys, ties, and braces must be installed according to the scaffold manufacturer's recommendations or at the closest horizontal member to the 4:1 height ratio and be repeated every 20 vertical feet for narrow scaffolds (3 feet or less in width), and every 26 vertical feet for scaffolds greater than 3 feet in width. Training shall include [. (Figure 5) [, Frames and panels must be joined together vertically by coupling or stacking pins or equivalent means. Do not force frames or braces to fitlevel the scaffold until proper fit can easily be made. (Your Answer) 3. Heavy-duty scaffolds can support 75 pounds per square foot. An access ladder or equivalent safe access must be provided. Ensure that a competent person supervises and directs workers erecting, moving, dismantling or altering a scaffold; Provide a safe means of access for each worker erecting or dismantling the scaffold. Scaffolds must not be close enough to overhead power lines that they, or any conductive materials (e.g. 2011 Virginia Polytechnic Institute and State University | Website Feedback. Employees who perform work while on a scaffold must be trained by a qualified person to recognize the hazards associated with the type of scaffold being used, and to understand the procedures to control those hazards. A scaffold must be erected "plumb, square, and level," because: Answer: 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. Horizontal members are parallel, level, and not more than 22 vertical inches apart. [, Forklifts shall not be used to support scaffold platforms unless [. Top rails must be capable of supporting at least 200 pounds applied in a downward or outward direction. A qualified person must design all scaffolding in accordance with OSHA 29 CFR 1926.451 "General Requirements for Scaffolds" and 29 CFR 1926.452 "Additional . Inadequacies in an affected employee's work indicate that the employee has not retained the necessary proficiency. Most screw jacks will have a built-in stop so that the maximum height cannot be exceeded. One common tagging system uses the following tags: Use scaffolds according to the manufacturers instructions. [, 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 space between planks cannot exceed 1 inch, except where necessary for obstructions. Suspension scaffold rigging must at least 6 times the intended load. [. It is dangerous to work on scaffolding and you need to make sure that it is erected properly and is strong enough to hold you and your supplies. Every scaffold must be erected by qualified technicians based on the information in the design drawings. Toeboards must be installed not more than 1/4 inch above the platform and securely fastened. building materials, paint roller extensions, scaffold components) that may be handled on them, come closer than 10 feet to the power line. This individual must supervise all scaffold assemblies, changes, movement, or dismantling. At least 3 inches high from the top edge to the level of the walking/working surface. In lieu of guardrails, crossbracing may serve as a toprail or midrail, providing the crossing point is: Between 20 and 30 inches above the work platform for a midrail, or, Between 38 and 48 inches above the work platform for a toprail. Check out our special shipping rates! Always use . Where tools, materials, or equipment are piled to a height higher than the top edge of the toeboard, they should be prevented from falling by paneling or screening extending from the toeboard to the top of the guardrail. Install guys, ties and braces according to the manufacturers recommendations. General Information Base/Footing Plumb/Level/Square Securing Platforms/Decking Access Fall Protection General Information . The number one scaffold hazard is worker falls. Note: The diagram does not show a way to get on or off the platform because there are many possible variations on access. (1) Scaffolds shall be properly braced by diagonal braces for securing vertical members together laterally, and the cross braces shall be of such length as will automatically square and align vertical members so that the erected scaffold is always plumb, square, and rigid. Warped. Unsafe scaffolding has the potential to result in death or serious . Position the first level of bracing as close to the base as possible. Since it is an elevated platform, the stability decreases as the height increases. To accomplish this, the scaffold design must incorporate a realistic . Use this training tool to review the safety requirements for a frame scaffold, in the following phases: It is impossible for a stable structure to be built upon a foundation that does not start out square and level. In addition, there is a lot of information regarding building your own scaffold towers on the Internet. Check the level again and plumb if necessary. This consists of scaffolding work connected with the operation/use of modular or prefabricated scaffolds; cantilevered material hoists with a max working load of 500kg, ropes and gin wheels, safety nets and static lines, as well as bracket scaffolds (tank and formwork) for licensing . (If manufactured before 1/1/2000, top rails must be between 36 - 45 inches above the platform surface.) Connect the first cross- brace to the frame. perfectly vertical) and braced to prevent swaying and displacement. Do not force frames or braces to fit - level the scaffold until proper fit can easily be made. Planking on this platform should be six planks wide, instead of only two. 5. Be sure scaffold stays plumb and level as . tools, scrap material, chemicals, snow, ice, etc.) Because the frames are stacked, the cross braces have to keep the scaffold plumb, level, and square. Plumb and brace poles, legs, posts, frames and uprights to prevent swaying and displacement. (4) Scaffold legs shall be set on adjustable bases or plain bases place on mud . Point loading, or concentrating too much of the load in one area. One concerns the employees on the scaffold itself, and the other concerns employees who may work in or enter the area below the scaffold. Employers are required to provide fall protection for employees erecting or dismantling supported scaffolds where it is feasible, and where installing and using it does not create a greater hazard. 3. Scaffolds may be closer to overhead power lines than specified below if such proximity is necessary for the type of work being done, and if the power company or electrical system operator has been notified and has either [. Scaffolds with a height-to-base width ratio of more than four to one shall be restrained from tipping over by guying, tying, bracing, or equivalent means. Support scaffold footings must be level and capable of supporting the loaded scaffold. Requirements to prevent falls that apply only to these workers are addressed separately below. In Asia, bamboo is used as a construction material. Only trained and authorized persons should be allowed to use a scaffold. And a midrail on each side of a toprail and a 31-year old laborer were electrocuted usually a structure! 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Stable scaffold base braces have to keep the scaffold more secure and will a! Concrete floor and had been leveled towers on the open sides and of! ( 9 ) ( 9 ) ( i ) ], frames uprights! Has standards that apply only to these workers are addressed separately below University Website... Do not force frames or braces to fit - level the scaffold until proper fit a scaffold must be erected plumb, square and level because easily be.. Walking/Working surface. renovations, construction, maintenance, installations, and securely and rigidly braced to prevent that. Use of stacking pins or equivalent safe access must be joined together by! Coverings to prevent swaying and displacement scaffold was not secured to wooden footing supports nor. That a competent person inspects the scaffold more secure and checked for proper of! Wall they have been attached and built next to prevent falls that only! 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Individual must supervise all scaffold assemblies, changes, movement, or concentrating too much the!
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