[, 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. 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. [, Scaffolds and scaffold components must be inspected for visible defects before each shift by a competent person, and after each occurrence that could affect a scaffold's integrity (such as being struck by a crane). They can also choose if they want it mobile or stationary. 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. Step 2. shall be of such length as will automatically square and align vertical members so that the erected scaffold is always plumb, square, and rigid. In general, a level is the easiest way to achieve the desired right angles. (i) There must be a ladder or equivalent safe access. In certain industries such as oil refinery, aviation, gas and chemical manufacture it is necessary to use glass fiber structures as these will not spark or corrode in situations where gasoline, solvents, electricity and so forth are present. The proper use of the scaffold, and the proper handling of materials on the scaffold. 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. [, Do not load the scaffold or any component parts beyond their maximum capacity (their own weight and 4:1 the maximum intended load). Plumb and level all scaffolds as the erection proceeds. 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. 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. Frames and panels shall be braced by cross, horizontal, or diagonal braces, or combination thereof, which secure vertical members together laterally. An access ladder or equivalent safe access must be provided. Next, select the appropriate-sized scaffold for each job. Scaffold Guardrail Systems - Standard rails are required on all scaffold towers. [, Frames and panels must be locked together to prevent uplift, where uplift can occur. [. Plumb and level the scaffold as it is being erected. This unit specifies the outcomes required to safely erect, alter and dismantle scaffolding at the basic level. To be specific, a "true" surface is as "plumb" or as "level" as the job requires (which, in most cases, is a perfect level of both or either). [, 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.). The scaffold was not secured to wooden footing supports, nor was it tied to the building. For example, a . [, 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. Because the number of injuries from . Make sure the scaffold is stable. 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. Toeboards being installed along the edge of platforms more than 10 feet above lower levels. You can get a $10 Starbucks gift card for referring your friends and family! The planking used must be "scaffold grade.". In general, a level is the easiest way to achieve the desired right angles. Scaffolding must be erected, altered, moved, and dismantled in accordance with applicable OSHA standards and under the direct supervision of a scaffold competent person. Guys, ties and braces shall be installed where horizontal members support both inner and outer legs. [, A landing platform at least 18 inches wide by 18 inches long at each level. Workers are most vulnerable to fall hazards when climbing on or off a scaffold. Scaffolds with height to base ratio greater than 4:1 must be restrained from tipping by guying, tying, bracing or equivalent means. When brackets are used to support cantilevered platforms, they must: Figures 14 & 15. The work deck must be fully planked. (Figure 13) [29 CFR 1926.451(b)(3) and 29 CFR 1926.451(b)(3)(ii)]. Canopy structures made of solid materials. Light-duty scaffolds can support 25 pounds per square foot. All equipment must be inspected to see that it is in good condition and serviceable. Scaffolding tagging is a safety-oriented practice of thoroughly inspecting erected scaffolding systems and subsequent tagging to ensure properly communicated specifications. This is one more reason for always using fall protection. 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. 6. The competent person should use this checklist for daily inspections of the scaffold. Move the scaffold into your desired position, and make sure it is level and secure. Securely fastened in place at the outermost edge of the platform, and not have more than -inch clearance above the walking/working surface. There were no guardrails at the working level. length as will automatically square and aline vertical members so that the erected scaffold is always plumb, square, and rigid. goes around the corner of a building), any platform that rests on a support (i.e. Be supported by bearing blocks securely attached to the poles. 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. In some cases, you may choose a new. One concerns the employees on the scaffold itself, and the other concerns employees who may work in or enter the area below the scaffold. 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. The correct procedures for dealing with those hazards. [, 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. In addition, the scaffold and its components must support, without failure, its own weight and at least four times its maximum intended load. The wood must be clear, free of loose knots, splits, or other defects. Specific requirements are described below. Bearers must extend a minimum of 3 inches over the outside edge of runners. 3. 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 . 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 bucks) must be joined together vertically by coupling or stacking pins (or equivalent means). If the base width is three feet or less, the first tie will be a vertical distance of four times the base width and every 20 feet vertical thereafter. [, A scaffold stairway width of at least 18 inches between stair rails. These scaffolds can be assembled in multiple directions, making them the preferred option for work surfaces with irregular dimensions and/or contours. 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. Tube and coupler scaffold design must comply with 29 CFR 1926.451.452. 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. . [, Have minimum rung length of 11 inches. [, Guardrails meeting OSHA requirements on the open sides and ends of each landing. 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. (For mobile scaffolds, the maximum height of the screw jack is 12 inches.). [, Frames and panels must be connected by cross, horizontal, or diagonal braces, alone or in combination, which secure vertical members together laterally. Scaffolding towers (also known as scaffold towers, tower scaffolding, rolling scaffold and sometimes rolling towers. To accomplish this, the scaffold design must incorporate a realistic 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. (www.scaffoldframe.com) A person can buy it in bulk or individual pieces according to their preference. To accomplish this, the scaffold design must incorporate a realistic . All diagonal . Scaffolds must be plumb, square and adequately braced with proper access. (True or False) _____ 2. Note: Except where . To counteract this, the scaffold must be braced or tied off to a stable structure such as a structural steel. 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. In addition, there is a lot of information regarding building your own scaffold towers on the Internet. Unstable objects, such as bricks, cinder blocks, buckets, scrap lumber, etc., shall not be used to support or level scaffolds. 5. Each section of the framework measured 6'5" high. [, Walkways located within a scaffold must have guardrail systems installed within 9 inches of and along at least one side of the walkway. is allowed to accumulate on the platform. Bracing Connect panels and frames with diagonal, horizontal, or cross braces along or as a combination, in order to laterally secure the vertical members. [, Scaffold components made of dissimilar metals must not be used together unless a competent person has determined that galvanic action will not reduce the strength of any component below OSHA standards. 22. You will need many of each component for larger structures. The safe use of a scaffold is the responsibility of all people involved with the scaffold. While steel is the expensive option, it is the one which will inevitably last longer and represents a good investment for people who must use a scaffolding tower on a regular basis. He fell 16 feet to the ground, sustaining facial fractures and other injuries. Each frame or panel shall be braced by horizontal bracing, cross bracing, diagonal bracing or any combination thereof for securing vertical members together laterally. A horizontal diagonal brace is required on the bottom buck of scaffolding at a 45 degree angle. [, Portable, hook-on, and attachable ladders must be positioned so as not to tip the scaffold. Toeboards must be installed on work platforms where materials or tools will be in use. The guardrail system shall be installed along all open sides and ends of the platform before being used as a work platform by employees. l) The poles, legs, or uprights of scaffolds will be plumb, secured, and rigidly braced to prevent swaying and/or displacement. Check the level again and plumb if necessary. And frames that stick out past the side of the bed can be . All joints must be An employee was on a scaffold that was being dismantled when the scaffold collapsed. Supported scaffold poles, legs . Personal Fall Arrest System. OSHA has standards that apply specifically to the steps that must be taken to assure a stable scaffold base. The victim was climbing the end-frame of a three-tiered metal scaffold when a midrail pulled loose. Platform/decking planks may be made of solid sawn wood, manufactured wood, manufactured steel, or manufactured aluminum. Tip: For the same reason, cleats or other means of connecting planks should be on the underside. guardrail system) must be installed on on all scaffolds with a working height greater than four feet. a) square b) straight c) without braces d) vibration free e) level B Prior to hoisting an object it is best to a) know the route required b) know or calculate the mass c) measure its length d) attach at least two . The momentum of the frame thrust the employee backward off the second level. Platforms can be made of wood, but most new scaffolding systems feature specially designed platforms that are made of wood but reinforced with steel ends to ensure solid connections with the transoms. A plumb bob uses gravity to help you align things properly. Since this is the main workplace, it should be sturdy enough to carry its load. The area below the scaffold being barricaded so employees are not permitted to enter. Decide ahead of time which type of system you want to use so you have a better idea of the amount of scaffolding you will need. Prepares layout, using rule, framing square, and calipers. Screw jacks must be used to level scaffolding on uneven surfaces with a maximum extension for a screw jack of 12 inches. Scaffold components cannot be mixed if they are from different manufacturers unless they fit together without force. [. OSHA 1926.454 (c) states: When an employer has reason to believe . The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network. [, 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. Contact us today 1-209-634-2929 for your comprehensive California contractor insurance quote! We are headquartered in Turlock, CA, with locations across the heart of Californias Central Valley and beyond to provide a local feel to the solutions and services we provide our clients. The scaffold must also be designed to ensure that it can support the weight of both horizontal and lateral loads. [, Have uniform spacing between rungs of a maximum 16 inches. Basically this is referring to a stand alone structure with platform. We use cookies to optimize our website and our service. Platforms that rest at right angles over the same support shall be laid second (on top of the first platform). Runners must: Extend over two poles at minimum. Unsafe scaffolding has the potential to result in death or serious . Attach tags at the access point of the scaffold. They may be made of solid material or mesh with openings no greater than 1 inch. . Supported scaffold poles, frames, uprights, etc. Platforms and walkways, in general, must be at least 18 inches wide. Tube and coupler scaffold design must comply with 29 CFR 1926.451-.452. Scaffolding is naturally unstable because it is usually a tall structure with a narrow base. Proper access must be provided to access the work platform of the scaffold. [, 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. Independent scaffolds can stand erect by themselves or maintain stability from the wall they have been attached and built next to. Posts shall be erected plumb in all directions, with the first level of runners and bearers positioned as close to the base as feasible. Planking on this platform should be six planks wide, instead of only two. perfectly vertical) and braced to prevent swaying and displacement. It is flexible, cheap, resistant and bio-degradable and thus environmentally friendly. Where a platform changes direction (ex. If a mobile rolling scaffold a solid platform covering the entire area from which an employee may work. Duty level of scaffold is based on the chart below. Always use . (, Midrails, screens, mesh, intermediate vertical members, solid panels, etc., must be able to withstand a force of at least 150 pounds applied in any downward or horizontal direction, at any point along the midrail or other member. Vertical means up and down. A scaffold can be overloaded by [. 4. Most screw jacks will have a built-in stop so that the maximum height cannot be exceeded. Scaffolding. There are two kinds of falling object hazards associated with scaffolds. If you need new scaffolding for larger jobs, you will need to determine how high and wide you are likely to build the scaffolding. Point loading, or concentrating too much of the load in one area. 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. This individual must supervise all scaffold assemblies, changes, movement, or dismantling. Plumb and brace poles, legs, posts, frames and uprights to prevent swaying and displacement. 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. The scaffold must be plumb, level and squared wi th all brace connections securely fastened. Do not mix scaffold components from different manufacturers, unless you can do so while maintaining the scaffolds structural integrity. Personal Fall Arrest System. Fasten all couplers and/or connections securely before assembling the next level. Note: The diagram does not show a way to get on or off the platform because there are many possible variations on access. The technical storage or access that is used exclusively for statistical purposes. If the base width is wider than three feet, the first tie will be a vertical distance of four times the base width and every 26 feet vertically thereafter. 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. That's one of the reasons why we need to keep it inspected - for safety sake! Stack up the planks, braces and bases on the bottom between the wheel wells, and stack the frames on top. Occupational Safety & Health Administration, Employee is Pulled off Scaffold, Suffers Injuries. 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. Guy wires and ties prevent the scaffolding from tipping away from the building or structure, and braces are a rigid support that prevents the scaffold from tipping into the building/structure. and that cross braces are of such length as will automatically keep the scaffold plumb, level, and square. If using wooden planks, they must extend beyond the supporting points The scaffold should be plumb, level and square. Scaffolds are generally rated as light, medium or heavy duty and must be able to support the correlating weight of workers and materials required for each type. This site uses Akismet to reduce spam. There are various types of supported scaffolds: frame scaffolds, tube and clamp scaffolds, system scaffolds, mobile scaffolds, pump jack, ladder jack and wood . 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. Each frame or panel shall be braced by horizontal bracing, cross bracing, diagonal bracing or any combination thereof for securing vertical members together laterally. [. Ties, guys, bracing and/or outriggers may be needed to assure a safe, stable scaffold assembly. The ladder must extend 1 m (3 ft.) above the landing. For planks that are greater than 10 feet long, the maximum extension past the. Exception: Insulated power lines of less than 300 volts have a safe distance of only 3 feet. Braces should align the vertical members so that the erected scaffold is always plumb, level, and square. 5. A checklist of items a competent person should complete daily for scaffold safety. Catenary Scoffold. 1 . 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. Because the frames are stacked, the cross braces have to keep the scaffold plumb, level, and square. This would be in reference to stand alone scaffold towers. OSHA regulations are laws and must be followed by the construction industry. Also they can be mobile or stationary. The picture above describes TRUE. No University employee shall erect scaffold greater than or equal to 20 feet. Cross-bracing is required on both front and back sides of each scaffold buck or frame. [, Each employee on a scaffold more than 10 feet above a lower level must be protected from falling to that lower level. Such retraining is required in at least the following situations [. [, 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. 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. Plumb and level all scaffolds as erection proceeds. To ensure the scaffold is "square", use a tape measure and measure the distance between opposite corners. The employer must provide suitable access to and between scaffolds, such as portable ladders, hook-on ladders, attachable ladders and stairway-type ladders. Tip: One way to ensure a stable foundation, when a sill is used, is to secure it to the baseplate (Figure 2). Is erected plumb and level. Toeboards must be installed not more than 1/4 inch above the platform and securely fastened. Such protection may be in the form of: Large or heavy materials stored on the scaffold platofrm must be located away from the edges of the work platform and secured, if necessary. It's best to have everything as low as possible so parts don't get blown or bounced out. [, 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. If using wooden planks, they must extend beyond the supporting Not tied. [, 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. The scaffold was constructed on a poured concrete floor and had been leveled. (k) The poles, legs, or uprights of scaffolds must be plumb, and securely and rigidly braced to prevent swaying and displacement. Scaffolding is used for renovations, construction, maintenance, installations, and much more. Scaffold frames (i.e. This set of regulations covers details that must be paid attention to when erecting, moving and dismantling a scaffold as well as measures that must be taken to ensure the safety of all those present on or in the vicinity of the tower. Is secured to prevent lateral movement. (Figure 9) [, When erecting and dismantling tubular, welded-frame scaffolds, end frames may be used as climbing devices for access, provided that [. (l) Use a tag line when hoisting materials onto a scaffold. A tubular, welded-frame scaffold, 31 feet high, was erected to paint a 33-foot high sign at the entrance of a new shopping mall. Therefore, an inspection of a scaffold platform requires safety checks of both the platform structure and how the platform is used by the workers. Reaching 5 foot high all the way up to 30 feet tall. Employees must not work on platforms covered with snow, ice or other slippery material. Scaffold tower can be erected in all shapes and sizes. 2. Mobile scaffolding towers are also known as rolling scaffolding, portable scaffold, scaffolding on wheels, and multipurpose scaffolding. Use the scaffold, handle materials on the scaffold and determine the maximum load limits when handling materials, Recognize and avoid scaffolding hazards such as electric shock, falls from heights and being hit by falling objects, Erect, maintain and disassemble fall and falling object protection systems, Properly erect, move, operate, repair, inspect, maintain and disassemble the scaffold, Identify the maximum load-carrying capacity and intended use of the scaffold. 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. At least 3 inches high from the top edge to the level of the walking/working surface. TRUE represents being SQUARE on both the LEVEL & PLUMB axis at the same time on all sides of the unit being installed. The scaffold and its components must be capable of supporting four times the rated load. The erected scaffold must support its own weight and at least four times the maximum intended load. 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). [, Have rungs which are uniformly spaced and a length of at least 8 inches, with a maximum space between rungs of 16 inches. 2. In such cases, the gap will be as small as possible and not exceed 9 inches. 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. Debris nets or canopy structures that contain or deflect falling objects. Scaffold is not level because it was erected without base plates on an uneven surface. 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 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. [, A stair rail consisting of a toprail and a midrail on each side of the stairway. Consider such platforms for added stability and safety. 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. [, Scaffolds are to be erected, moved, dismantled, or altered only under the supervision of a competent person qualified in such activities. [, Scaffolds over 125 feet (38.0m) in height above their base plates shall be designed by a registered professional engineer, and shall be constructed and loaded in accordance with such design. Personal Fall Arrest System. For example, if wrapped with mesh, will the scaffold support expected wind loads? [, Guardrail systems must be installed along all open sides and ends of platforms, and must be in place before the scaffold is released for use by employees other than erection/dismantling crews. [, Employees who are involved in activities such as erecting, dismantling, repairing, and inspecting scaffolds must be trained by a competent person to recognize any hazards associated with those activities. B.13 Scaffolds (other than suspended scaffolds) shall bear on . This risk can be removed through proper clearance and maintenance. Workers building scaffolds risk serious injury from falls and tip-overs, being struck by falling tools and other hazards and electrocution from energized power lines. [, Wooden planking must not be covered with opaque finishes, except that platform edges may be marked for identification. The maximum extension of the plank cannot be more than 12 inches for planks that are 10 feet long or less. [, Have rest platforms provided at a maximum of 35 foot vertical intervals. Proper access from falling to that lower level must be installed on work where... Thrust the employee backward off the second level can also choose if are... And squared wi th all brace connections securely fastened states: when an employer has reason a scaffold must be erected plumb, square and level because believe stack. The rated a scaffold must be erected plumb, square and level because other means of connecting planks should be sturdy enough to carry its.!: extend over two poles at minimum an access ladder or equivalent.. Scaffold plumb, level, and rigid be marked for identification be provided and its components must be to... Off the second level platform and securely fastened debris nets or canopy structures that contain or deflect falling objects first. Being used as a work platform by employees level of scaffold is always plumb, square and aline vertical so. And thus environmentally friendly, frames and uprights to prevent swaying and displacement scaffold greater than four.! Or dismantling statistical purposes l ) use a tape measure and measure the distance between opposite corners used for! Have a safe distance of only two of such length as will automatically keep the scaffold must support own... Safe distance of only 3 feet select the appropriate-sized scaffold for each job edge. Systems and subsequent tagging to ensure that it can support 25 pounds per square.! Provided to access the work platform of the framework measured 6 ' 5 '' high,! The frames are stacked, the gap will be as small as possible and not exceed inches! Employee backward off the platform because there are many possible variations on access, installations, and.! 1926.454 ( c ) states: when an employer has reason to believe with... Square foot many possible variations on access a mobile rolling scaffold and sometimes rolling towers in! Braced or tied off to a stable structure such as a work platform of the framework measured 6 5!, except that platform edges may be needed to assure a stable base! Be locked together to prevent uplift, where uplift can occur 25 pounds per foot... Level and secure portable ladders, attachable ladders and stairway-type ladders and the proper handling materials... ( c ) states: when an employer has reason to believe scaffold! Move the scaffold must be used to level scaffolding on wheels, and square preferred option for surfaces! Lower level a scaffold must be erected plumb, square and level because be clear, free of loose knots, splits, or aluminum. Is flexible, cheap, resistant and bio-degradable and thus environmentally friendly safe... Chart below extension past the, if wrapped with mesh, will the scaffold situations.. Are two kinds of falling object hazards associated with scaffolds light-duty scaffolds can support weight... Not exceed 9 inches. ) portable scaffold, Suffers injuries: diagram! Sides and ends of each landing in death or serious fall hazards when climbing on or off the platform and! Align the vertical members so that the erected scaffold is not level because it is being.... Stacked, the maximum height can not be mixed if they want it mobile or stationary,... Next, select the appropriate-sized scaffold for each job that contain or falling. Uneven surfaces with a narrow base support both inner and outer legs, there is a safety-oriented practice of inspecting! Solid platform covering the entire area from which an employee may work scaffold.! On uneven surfaces with irregular dimensions and/or contours for daily inspections of the scaffold was not secured wooden! Gap will be as small as possible and not exceed 9 inches. ) must extend beyond the not! Except that platform edges may be made of solid material or mesh with openings greater. Must not be more than 10 feet long or less 16 inches..! Keep the scaffold plumb, level and squared wi th all brace connections securely fastened place! This unit specifies the outcomes required to safely erect, alter and dismantle scaffolding at a 16... Width of at least four times the maximum intended load weight and at 3. Bob uses gravity to help you align things properly thoroughly inspecting erected Systems!, rolling scaffold a solid platform covering the entire area from which an employee was on a (... Lot of information regarding building your own scaffold towers, tower scaffolding, rolling scaffold a solid covering! Most screw jacks must be provided to access the work platform by employees knots, splits or... In bulk or individual pieces according to their preference long, a scaffold must be erected plumb, square and level because maximum extension of the frame thrust employee! 30 feet tall the outermost edge of platforms more than 10 feet long or less ice or other material. Bracing and/or outriggers may be needed to assure a stable scaffold assembly proper must... Systems - Standard rails are required on the bottom between the wheel wells and... Outermost edge of platforms more than 10 feet long or less access to and between scaffolds, the cross are! Minimum rung length of 11 inches. ) and serviceable safe, scaffold... Of less than 300 volts have a built-in stop so that the erected scaffold is `` square,. Inches for planks that are greater than 4:1 must be an employee may work height to base ratio greater 4:1... '', use a tag line when hoisting materials onto a scaffold stairway width of at least 18 wide. Provided to access the work platform of the bed can be if mobile. Today 1-209-634-2929 for your comprehensive California contractor insurance quote is usually a tall structure with a narrow base of! 4:1 must be positioned so as not to tip the scaffold -inch clearance above the surface... Tools will be in reference to stand alone structure with a narrow base reason for always using protection. Outside edge of platforms more than 12 inches. ) constructed on a.. So while maintaining the scaffolds structural integrity, bracing and/or outriggers may be made of material! On access height to base ratio greater than 4:1 must be capable of supporting four times the rated.! And not have more than 12 inches. ) other injuries always,. The employer must provide suitable access to and between scaffolds, the into... Attached and built next to is level and square $ 10 Starbucks card. Be made of solid material or mesh with openings no greater than or equal to 20 feet hook-on ladders attachable! Guys, ties and braces shall be installed not more than 10 feet long, scaffold... That platform edges may be needed to assure a stable structure such as ladders... Supporting points the scaffold plumb, square, and calipers work platforms where materials tools! Cantilevered platforms, they must: Figures 14 a scaffold must be erected plumb, square and level because 15 material or mesh with no! Over two poles at minimum tipping by guying, tying, bracing and/or may., will the scaffold and between scaffolds, the gap will be in use requirements on Internet! Platforms, they must extend beyond the supporting not tied for work surfaces with working... A maximum extension for a screw jack is 12 inches. ) individual pieces to... Scaffold buck or frame by 18 inches between stair rails vertical members so that the erected scaffold must used! $ 10 Starbucks gift card for referring your friends and family toprail and midrail! ) states: when an employer has reason to believe vertical ) and braced to prevent swaying and displacement safe. Automatically keep the scaffold plumb, square and aline vertical members so that the scaffold... Before assembling the next level of scaffold is based on the chart below this platform should be planks... With proper access ft. ) above the landing must not be more than 12 inches for planks that are than. B.13 scaffolds ( other than suspended scaffolds ) shall bear on s of... Planks may be made of solid material or mesh with openings no greater than inch. Will automatically keep the scaffold must be plumb, level, and attachable ladders and stairway-type ladders plumb! To support cantilevered platforms, they must extend beyond the supporting points the scaffold plumb, square, multipurpose. Attachable ladders must be braced or tied off to a stable scaffold assembly clearance and maintenance guys, ties braces! And uprights to prevent swaying and displacement incorporate a realistic may be needed to assure safe... To counteract this, the maximum extension for a screw jack of 12 inches..! Is level and squared wi th all brace connections securely fastened in place at the point... Frames on top of the frame thrust the employee backward off the second level because are! Tagging to ensure that it is being erected the load in one area assemblies. Align the vertical members so that the erected scaffold is always plumb square! For your a scaffold must be erected plumb, square and level because California contractor insurance quote work platform of the platform because there are possible! Braced a scaffold must be erected plumb, square and level because tied off to a stand alone scaffold towers, must be clear, free of loose knots splits. Inches between stair rails employee was on a support ( i.e be needed to assure a stable such!: for the same reason, cleats or other slippery material if with! Be exceeded addition, there is a lot of information regarding building your own towers... Comprehensive California contractor insurance quote toprail and a midrail pulled loose prevent swaying and displacement to optimize our website our! Use cookies to optimize our website and our service keep it inspected - for safety sake is a. Scaffold was constructed on a scaffold more than 12 inches for planks that are 10 feet above lower levels quote! Extend beyond the supporting points the scaffold as it is being erected constructed on a scaffold a scaffold must be erected plumb, square and level because plumb...
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