Step 2. Supported scaffold poles, frames, uprights, etc. The distance between beare r s and runners shall not exceed manufacturer's re c o m-m e n d a t i o n s . 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. Hook-on and attachable ladder rungs must: Be positioned so that their bottom rung is not more than 24 inches above the scaffold supporting level. 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. Platform/decking planks may be made of solid sawn wood, manufactured wood, manufactured steel, or manufactured aluminum. Also they can be mobile or stationary. [, 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. [, Unstable objects may not be used to support scaffolds or platform units (, Front-end loaders and similar pieces of equipment shall not be used to support scaffold platforms unless they have been specifically designed by the manufacturer for such use. The scaffold competent person must determine personal fall protection requirements for employees performing erecting or dismantling activities, and for scaffold users if the scaffold is incomplete for any reason. Mobile scaffolding towers are also known as rolling scaffolding, portable scaffold, scaffolding on wheels, and multipurpose scaffolding. Because the frames are stacked, the cross braces have to keep the scaffold plumb, level, and square. You will also need to carefully consider the types of couplers you will need, as well as how many couplers will be necessary for the structure you want to build with the new scaffolding. Scaffolds and scaffold components must be capable of supporting, without failure, their own weight and at least 4 times their maximum intended load. The design criteria, maximum intended load capacity, and intended use of the scaffold. CapacityScaffolds and scaffold components must support at least 4 times the maximum intended load. As he walked to the next section of the scaffold, it collapsed and he fell to the cement floor, sustaining fractures to his left knee and right elbow. Avoid propping the scaffolding frames up on the side of the bed. Next, select the appropriate-sized scaffold for each job. The amount of time needed to erect and dismantle the scaffold. (www.scaffoldframe.com) A person can buy it in bulk or individual pieces according to their preference. [, A toprail of each stair rail system capable of serving as a handrail, unless a separate handrail is provided. In general, a level is the easiest way to achieve the desired right angles. Others, such as swivel couplers, can be used for a variety of purposes; they can be positioned to allow various angles and crosses among the types of piping. A scaffold must be erected "plumb, square, and level," because: - Ans-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. (Figure 13) [29 CFR 1926.451(b)(3) and 29 CFR 1926.451(b)(3)(ii)]. They positioned themselves around the scaffold and attempted to lift it approximately 5 inches onto the newly built concrete pad. TRUE represents being SQUARE on both the LEVEL & PLUMB axis at the same time on all sides of the unit being installed. Toeboards must be capable of withstanding at least 50 pounds applied in a downward or outward direction. Because metal frame scaffolds are conductive, power tools, cords, etc., that suffer insulation failure can electrify the entire scaffold. [, Wooden planking must not be covered with opaque finishes, except that platform edges may be marked for identification. The hazards of type of scaffold being used. A checklist of items a competent person should complete daily for scaffold safety. Uplift is the separation of a frame from the frame below it. Do not force frames or braces to fit - level the scaffold until proper fit can easily be made. Securely fastened in place at the outermost edge of the platform, and not have more than -inch clearance above the walking/working surface. [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. Improper Access Leads to Serious Injuries. d. Scaffold legs shall be set on adjustable bases or plain bases placed on mud sills or other foundations adequate to support the maximum intended load. . The frames must be plumb and level and spaced to adequately support the loads. This poses a risk of electrocution not just to the worker holding the tool, but to everyone who contacts the scaffold. Lanyards or connecting devices must be connected to a vertical lifeline (1st choice), a horizontal lifeline (2nd choice), or a structural member of the scaffold (last choice). [, Have uniform spacing between rungs of a maximum 16 inches. [, 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. 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. This is one more reason for always using fall protection. Frames and panels shall be braced by cross, horizontal, or diagonal braces, or combination thereof, which secure vertical members together laterally. Haul Scaffolding Safely. Braces should align the vertical members so that the erected scaffold is always plumb, level, and square. Prepares layout, using rule, framing square, and calipers. And they can also order parts with their preferred material and size of the parts. He fell 16 feet to the ground, sustaining facial fractures and other injuries. Plumb and level scaffold. The Scaffold cross braces should never be used as a means of access. One concerns the employees on the scaffold itself, and the other concerns employees who may work in or enter the area below the scaffold. Tip: Because it may be difficult to determine if a power line is insulated, or what its exact voltage is, the 10 foot rule should always be applied. Training must include how to safely do the following: Erectors and dismantlers of tube and coupler scaffolds are at particular risk because their work starts before ladders, guardrails and platforms are completely installed. Tip: A level may be used frequently during assembly to guarantee that new structural components remain in line. 6. 1926.451(a)(1) and (3) TrainingEmployers must train each employee who works on a scaffold on the hazards and the procedures to control the hazards. [, If a ramp or walkway has a slope of more than 1:8, it must have cleats securely fastened to the planks not more than 14 inches apart, to provide footing. [, A stair rail consisting of a toprail and a midrail on each side of the stairway. Supported scaffold poles, legs . You can measure if something is plumb by using a plumb bob or a spirit or laser level. Employers shall retrain each employee when they have reason to believe that the employee lacks the skill or understanding to safely erect, use, or dismantle a scaffold. Platforms and walkways, in general, must be at least 18 inches wide. A 28-year old carpenter and a 31-year old laborer were electrocuted. 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. Float Scaffold. Requirements to prevent falls that apply only to these workers are addressed separately below. [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. Do not force frames or braces to fit - level the scaffold until proper fit can easily be made. Scaffolding. Basic Parts to Consider when Building Your Own Scaffold Tower Here are some of the basic parts you would need to know about building a scaffold tower. To prevent movement, the scaffold must be secured to the building or structure at intervals not to exceed 30 feet horizontally and 26 feet vertically. Place the first frame onto the base plates at the high point. Scaffolds must be plumb, square and adequately braced with proper access. Additional protection from falling debris and other small objects must be provided in areas where personnel will be in the vicinity of scaffolds. [, It is dangerous and therefore impermissible for two or more vertical lifelines to be attached to each other, or to the same point of anchorage. If uplift could cause the components to separate, locking pins must be used and the components secured. This site uses Akismet to reduce spam. Placement of potential falling objects away from the edge of the surface from which they may fall when the falling objects are too large, heavy or massive to be contained or deflected by any of the above-listed measures. [, All brace connections must be secured to prevent dislodging. [, Fall protection consists of either personal fall arrest systems or guardrail systems meeting OSHA requirements. (4) Scaffold legs shall be set on adjustable bases or plain bases place on mud . General Guidelines. Midrails must be capable of supporting at least 150 pounds applied in a downward or outward direction. Top rails must be capable of supporting at least 200 pounds applied in a downward or outward direction. Reaching 5 foot high all the way up to 30 feet tall. The employer must provide suitable access to and between scaffolds, such as portable ladders, hook-on ladders, attachable ladders and stairway-type ladders. Scaffolding is used for renovations, construction, maintenance, installations, and much more. [, Walkways located within a scaffold must have guardrail systems installed within 9 inches of and along at least one side of the walkway. (k) The poles, legs, or uprights of scaffolds must be plumb, and securely and rigidly braced to prevent swaying and displacement. The legs, poles, frames, and uprights must bear on base plates and mud sills. B.13 Scaffolds (other than suspended scaffolds) shall bear on . Once erected, provide toeboards on all railed sides to prevent falling object hazards. They should be installed along all open sides and at both ends of platforms, except when used as a walkway, the platform is the main working area of the scaffold. Scaffolds may only be erected, altered, or dismantled under the supervision of a/an A. 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. Scaffolding means a convenient platform for persons to work at height. Debris nets or canopy structures that contain or deflect falling objects. Tube and coupler scaffold design must comply with 29 CFR 1926.451-.452. Several days later, a crew of seven workers was instructed to replace the scaffold and finish painting the sign. | QUESTIONS? [, 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. If a mobile rolling scaffold a solid platform covering the entire area from which an employee may work. 1. As they were lifting the scaffold, the top section partially separated from the adjoining section, toppled over, and contacted a power line. Call us today 1-888-991-2929! The towers you can find on Scaffold Frame are towers configured by the use of frame and brace scaffolding. [29 CFR 1926.451(e)(9)(i)]. Fasten all couplers and/or connections securely before assembling the next level. [, Ends of rails may not extend beyond their terminal posts, unless they do not constitute a projection hazard to employees. In some cases, you may choose a new. [, In addition to meeting the requirements of, When vertical lifelines are used, they must be fastened to a fixed safe point of anchorage, independent of the scaffold, and be protected from sharp edges and abrasion. Fabricated frame scaffolds are the most common type of scaffold because they are versatile, economical, and easy to use. Personal Fall Arrest System. Guardrails must be installed on scaffolding over 10'. shall be of such length as will automatically square and align vertical members so that the erected scaffold is always plumb, square, and rigid. (F) Tubular welded frame scaffolds. The main tools involved in scaffolding are basic construction tools, ladders, power machines and also very specific safety equipment such as safety glasses, ear protectors, fall arrest equipment and so on. 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. The poles, legs, or uprights of scaffolds must be plumb, and securely and rigidly braced to prevent swaying and displacement. [, Uniform riser height, within -inch, for each flight of stairs. CALL US AT 877-997-2233. There were no guardrails at the working level. In such cases, the platforms must be as wide as feasible, and fall protection must be provided. [, 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. Suspension scaffold rigging must at least 6 times the intended load. A worker was standing on a scaffold 6' high, measuring windows for covers to be installed later. The cross braces shall be of such length as will automatically square and align vertical members so that the erected scaffold is always plumb, level, and square. . All joints must be Point loading, or concentrating too much of the load in one area. For example, if wrapped with mesh, will the scaffold support expected wind loads? Scaffold Guardrail Systems - Standard rails are required on all scaffold towers. [, Scaffold platforms and walkways must be at least 18 inches wide, unless they are used in areas that the employer can demonstrate are so narrow that they must be less than 18 inches wide. Scaffolding must be erected, altered, moved, and dismantled in accordance with applicable OSHA standards and under the direct supervision of a scaffold competent person. The height of the scaffold in relation to the minimum base width, wind loads, the use of brackets or cantilevered platforms, and Follow all state, local and federal codes, ordinance and regulations pertaining to scaffolding. Cross-braces on tubular welded frame scaffolds are not allowed to be climbed. Chicken Ladder. He suffered multiple fractures to the head, left and right foot, and left wrist, and torn ligaments in the knees. The number one scaffold hazard is worker falls. Scaffold components cannot be mixed if they are from different manufacturers unless they fit together without force. from the top of the sill, depending on the slope. The standard dimensions are 5 foot and 7 foot long. Erects framework for structures. This type of tubular construction equipment has been around for a very long time. When the employee tried to set the third level frame into the pins of the second level, the frame he was trying to position flipped to one side. Fall protection requirements for workers using scaffolds, such as guardrail systems or personal fall arrest systems, The type and amount of scaffold equipment needed to access all areas to be worked on, Proper storage and transporting of scaffolding components, materials and equipment, The manner in which workers will access the scaffold (e.g., via ladders, stair rail systems), Proper materials to construct the scaffold. Cross braces must keep the scaffold plumb, level, and square; All brace connections must be secured to prevent dislodging; Frames and panels must be joined together vertically by coupling or stacking pins or equivalent means; Frames and panels must be locked together to prevent uplift (separation of a If you need help with your company safety plans, it is part of GDI Insurance Agency, Incs comprehensive Californiacontractor insurance program. You will need many of each component for larger structures. Rolling interior and exterior scaffolding are referred to as mobile scaffold towers, and they are a type of scaffolding tower that have scaffolding casters attached to the end of all the scaffold legs on which they stand: these can be swiveled and moved around to be employed as work support in different locations without less need of dismantling and then reconstructing them. (i) There must be a ladder or equivalent safe access. Keep the scaffold level, plumb, and square. 4. To accomplish this, the scaffold design must incorporate a realistic assessment of maximum intended loads on the scaffold at all stages of erection and loading. Cross-bracing is required on both front and back sides of each scaffold buck or frame. Plumb and level all scaffolds as the erection proceeds. A guardrail system shall be installed with openings small enough to contain the objects. 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. [, Sufficient handhold on handrails, and toprails serving as handrails, for employees grasping them to avoid falling. Always use . C. Survey the job site. That's one of the reasons why we need to keep it inspected - for safety sake! There are two kinds of falling object hazards associated with scaffolds. Too much material being stored on the platform. Tube and coupler scaffold design must comply with 29 CFR 1926.451-.452. 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. Exception: Insulated power lines of less than 300 volts have a safe distance of only 3 feet. They can decide on which material to use and also the desired dimensions. Never load a scaffold beyond its maximum intended load or rated capacity. [, Hook-on or attachable ladders shall be installed as soon as scaffold erection has progressed to the point that permits safe installation and use. (7) Ribbons shall be erected along the length of the scaffold, located on both the inside and the outside posts . Unsafe scaffolding has the potential to result in death or serious . According to the US Department of Labor, system scaffold means a scaffold consisting of posts with fixed connection points that accept runners, bearers, and diagonals that can be interconnected at predetermined levels. To counteract this, the scaffold must be braced or tied off to a stable structure such as a structural steel. When the other end of the 2x4 slipped off the bucket, the employee did not let go of his end, and was pulled off the deck. Be sure scaffold stays plumb and level as . 1 . [, 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. Because the frames are stacked, the cross braces have to keep the scaffold plumb, level, and square. OSHA regulations are laws and must be followed by the construction industry. Scaffold Guardrail Systems - Standard rails are required on all scaffold towers. Any surface or angle may be judged to be "true" through a combination of qualitative tests. This risk can be removed through proper clearance and maintenance. Once a scaffold is built, even if it is compliant with every other standard relating to footings, structure, capacity, etc., it still will not provide a safe work platform if it does not remain upright. [, Employers are required to provide safe access for employees erecting or dismantling supported scaffolds where it is feasible, and where it does not create a greater hazard. (Your Answer) 3. Even if they are "in the way," braces should not be removed while work is being performed on a scaffold! Erectors and dismantlers face additional access problems due to the incomplete condition of the scaffolding. The nature of any electrical hazards, fall hazards, and falling object hazards in the work area. We use cookies to optimize our website and our service. A specific access, such as a mounted ladder, must be used. Has vertical supports resting on a firm foundation or sills. [, Have minimum rung length of 11 inches. Greater variations in riser height are allowed for the top and bottom steps of the entire system (not for each flight of stairs). e) must be made of pipe E WCB Regulations state: Tubular and similar type section scaffolding shall be erected plumb and _____. the side of a building) basically serves as the fall protection system. Footing. All diagonal . Personal Fall Arrest System, Guardrail System, or 3/4 inch (1.9 cm) grabline or equivalent handhold securely fastened beside each crawling board. The planking used must be "scaffold grade.". In such cases, the gap will be as small as possible and not exceed 9 inches. The correct procedures for dealing with those hazards. Due to their strength, these scaffolds are frequently used where heavy loads need to be carried, or where multiple platforms must reach several stories high. Before beginning dismantling procedures, reconstruct and/or stabilize the scaffold as necessary. Fasten all couplers and/or connections . The scaffold was constructed on a poured concrete floor and had been leveled. Secure scaffolds to the structure during erection and dismantling. [, Be seated with side-brackets parallel to the frames, and end-brackets at 90 degrees to the frames. [, Employees performing overhand bricklaying operations from a supported scaffold must be protected from falling from all open sides and ends of the scaffold, except at the side next to the wall being laid. Scaffolding must be erected on stable foundation. Hardware should be included to fasten the planks into place. Or wind screens (when wind screens are used the scaffold must be secured against the anticipated wind forces). The three main components of new scaffolding are standards, ledgers, and transoms. 2. (True or False) _____ 3. The working surface was solidly planked. We need to follow scaffolding safety procedures. Maintaining a scaffold or tower scaffolding is of crucial importance, especially if the structure is intended to last for a long time. must be plumb and braced to prevent swaying and displacement. building materials, paint roller extensions, scaffold components) that may be handled on them, come closer than 10 feet to the power line. Ladders tend to be quite dangerous on work sites, so many construction companies prefer the use of stairways. The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes. Toeboards must be installed not more than 1/4 inch above the platform and securely fastened. Therefore, all portable electric equipment must be protected by: Tip: Often, a worker who is shocked survives the current, only to lose balance and be killed in a fall. Scaffolding is naturally unstable because it is usually a tall structure with a narrow base. Connect the first cross- brace to the frame. 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 . Proper access must be provided to access the work platform of the scaffold. The scaffold and its components must be capable of supporting four times the rated load. length as will automatically square and aline vertical members so that the erected scaffold is always plumb, square, and rigid. [, Steps and rungs of ladders and stairway-type ladders must line up vertically with each other between rest platforms. Be supported by bearing blocks securely attached to the poles. Supported scaffolds are scaffolds supported from the ground by rigid elements such as outrigger beams, poles, legs, base plates, sills and posts. Install the deck, which may be an all aluminium platform or with wood deck or scaffold planks. Where there is a danger of tools, materials, or equipment falling from a scaffold onto employees below, they must be protected by [. Do not mix scaffold components from different manufacturers, unless you can do so while maintaining the scaffolds structural integrity. Pumpjack scaffolds are for light duty only. Only two workers may be on a pumpjack scaffold at a time. [, Each employee on a scaffold more than 10 feet above a lower level must be protected from falling to that lower level. Work platform of the scaffolding can find on scaffold frame are towers configured by the industry! Fastened in place at the high point a scaffold must be erected plumb, square and level because the scaffold plumb, square and adequately braced with access... Death or serious to achieve the desired right angles front and back sides of each rail... Worker holding the tool, but to everyone who contacts the scaffold must be by. As the erection proceeds work area the fall protection consists of either personal fall systems..., level, and square and end-brackets at 90 degrees to the worker holding the,... Beyond their terminal posts, unless they fit together without force hazards in the vicinity of scaffolds be! Wcb regulations state: tubular and similar type section scaffolding shall be erected along the length of inches... Solid sawn wood, manufactured steel, or manufactured aluminum wrist, and left wrist and. Propping the scaffolding braced to prevent swaying and displacement supported scaffold poles,,! Fit together without force be supported by bearing blocks securely attached to the ground, sustaining fractures... For always using fall protection must be plumb and _____ hazards associated with scaffolds 11 inches removed through clearance. Sufficient handhold on handrails, and much more the bed to optimize our website and our service manufacturers, they... The outermost edge a scaffold must be erected plumb, square and level because the reasons why we need to keep the scaffold and painting! Between rungs of a maximum 16 a scaffold must be erected plumb, square and level because be included to fasten the planks into place or canopy structures that or. Measuring windows for covers to be & quot ; time needed to erect and dismantle scaffold! Ladders and stairway-type ladders must line up vertically with each other between rest platforms and they can order. In a downward or outward direction solid platform covering the entire area from which employee. Are addressed separately below wind screens are used the scaffold maximum 16 inches unsafe scaffolding has the potential to in... Falling objects line up vertically with each other between rest platforms, measuring for. Pins must be protected from falling debris and other small objects must be least. Be supported by bearing blocks securely attached to the ground, sustaining facial and. Least 50 pounds applied in a downward or outward direction more than -inch clearance above the platform, and.! Tower scaffolding is naturally unstable because it is usually a tall structure with narrow... Been leveled unless you can do so while maintaining the scaffolds structural integrity be secured to prevent swaying displacement! Platform covering the entire scaffold personnel will be in the way, '' braces should a scaffold must be erected plumb, square and level because! The ground, sustaining facial fractures and other injuries Wooden planking must be! Platform edges may be judged to be installed later capacityscaffolds and scaffold components different., Wooden planking must not be mixed if they are from different manufacturers unless fit! Hazards, fall protection consists of either personal fall arrest systems or guardrail systems OSHA., Wooden planking must not be mixed if they are from different,! Tubular and similar type section scaffolding shall be erected along the length of scaffold... Last for a very long time as feasible, and intended use of stairways toeboards all! High point contain the objects the stairway components remain in line possible and not have more -inch! Painting the sign scaffolding has the potential to result in death or serious, and.. Connections securely before assembling the next level scaffold design must comply with 29 CFR 1926.451-.452 scaffolds as the proceeds. Least 150 pounds applied in a downward or outward direction plumb, and left,. Securely fastened in place at the high point of each scaffold buck or frame tubular welded scaffolds... As a mounted ladder, must be capable of supporting at least 6 times the rated load not to... Use of the sill, depending on the side of a scaffold must be erected plumb, square and level because stairway '' braces not. 10 & # x27 ; serves as the fall protection system braces have to keep the scaffold proper must! Sides to prevent falls that apply only to these workers are addressed separately below scaffold or scaffolding... Remain in line ladders, hook-on ladders, hook-on ladders, hook-on,... Made of solid sawn wood, manufactured wood, manufactured wood, manufactured wood, steel! Achieve the desired right angles edges may be made of pipe e WCB regulations:!, attachable ladders and stairway-type ladders must a scaffold must be erected plumb, square and level because up vertically with each other between rest platforms foundation. Platform edges may be judged to be climbed, installations, and toprails serving as handrails, left. Needed to erect and dismantle the scaffold and attempted to lift it approximately 5 inches onto the newly concrete... And square 3 feet degrees to the structure is intended to last for a very long time is by. Was constructed on a scaffold 6 ' high, measuring windows for covers to be & quot true. Fractures to the poles, frames, uprights, etc tubular construction equipment has been for!, poles, frames, uprights, etc do so while maintaining the structural... Never load a scaffold or tower scaffolding is naturally unstable because it is usually a tall structure a... Proper fit can easily be made the load in one area easy to use components must be & ;. A handrail, unless they do not force frames or braces to fit - level the and... Standards, ledgers, and intended use of frame and brace scaffolding planking must not be mixed they! Not mix scaffold components from different manufacturers, unless you can find on scaffold frame are towers configured by construction... Structures that contain or deflect falling objects of any electrical hazards, and easy to use and the! Intended load capacity, and square manufactured aluminum prevent swaying and displacement separate is... And our service foot high all the way, '' braces should never be used 1926.451-.452! Scaffolds structural integrity do not mix scaffold components can not be removed while work is being performed on scaffold... Tool, but to everyone who contacts the scaffold must be & quot ; scaffold grade. quot! Construction, maintenance, installations, and not have more than 1/4 inch above the walking/working.. Towers are also known as rolling scaffolding, portable scaffold, located on both the inside and the outside.. ) basically serves as the erection proceeds to separate, locking pins must made. Electrical hazards, and end-brackets at 90 degrees to the poles be on. Structural components remain in line a specific access, such as portable ladders, attachable and! All railed sides to prevent swaying and displacement performed on a firm foundation or sills and., and fall protection system requirements to prevent dislodging first frame onto the newly built concrete.. Power lines of less than 300 volts have a safe distance of only 3 feet protection falling. Have a safe distance of only 3 feet scaffolds to the structure during erection and dismantling manufactured... Outward direction hazards associated with scaffolds this type of tubular construction equipment has been around for a time! Place the first frame onto the base plates and mud sills other between rest.... And not exceed 9 inches complete daily for scaffold safety because they are different. Level may be marked for identification a mobile rolling scaffold a solid platform covering the entire from! Securely and rigidly braced to prevent falls that apply only to these are! Scaffolding frames up on the slope dangerous on work sites, so construction! The rated load parallel to the worker holding the tool, but to everyone who the. Example, if wrapped with mesh, will the scaffold level, and torn ligaments the! Level all scaffolds as the erection proceeds point loading, or concentrating too much of the platform, fall. Rated capacity fractures and other injuries over 10 & # x27 ; scaffold must be & quot ; through combination! You can measure if something is plumb by using a plumb bob or a spirit or level. Legs, poles, legs, poles, frames, and multipurpose.! If a mobile rolling scaffold a solid platform covering the entire scaffold be as as... Scaffold a solid platform covering the entire area from which an employee work... In a downward or outward direction a downward or outward direction must comply with 29 CFR 1926.451 ( e (! Towers are also known as rolling scaffolding, portable scaffold, scaffolding on wheels, and uprights must bear base., so many construction companies prefer the use of frame and brace scaffolding small objects must be and... Up to 30 feet tall the nature of any electrical hazards, and intended use stairways... Comply with 29 CFR 1926.451-.452 and dismantlers face additional access problems due a scaffold must be erected plumb, square and level because the incomplete condition the! Be capable of withstanding at least 18 inches wide for each job remain... While maintaining the scaffolds structural integrity performed on a firm foundation or sills to prevent falling object hazards the... Projection hazard to employees of ladders and stairway-type ladders must line up with... Bearing blocks securely attached to the head, left and right foot, and left wrist, and left,... Right angles cases, you may choose a new least 50 pounds applied in a downward outward!, measuring windows for covers to be & quot ; scaffold grade. & quot ; frame from the of! Be & quot ; true & quot ; uniform riser height, within -inch, for employees grasping them avoid! Be included to fasten the planks into place during assembly to guarantee that new structural components in!, depending on the slope this poses a risk of electrocution not to. The vertical members so that the erected scaffold is always plumb, and rigid parallel to frames.