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 . Install guys, ties and braces according to the manufacturers recommendations. Tip: A scaffold can be overloaded by removing the braces, which causes the weight on the scaffold to be distributed to fewer structural members. Specific requirements are described below. Erects scaffolding and ladders for assembling structures above ground level. 6. bearer) at an angle other than a right angle, shall be laid first. 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 . Tip: A level may be used frequently during assembly to guarantee that new structural components remain in line. Tip: One way to ensure a stable foundation, when a sill is used, is to secure it to the baseplate (Figure 2). [, 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. The victim was climbing the end-frame of a three-tiered metal scaffold when a midrail pulled loose. (Figure 5) [, Frames and panels must be joined together vertically by coupling or stacking pins or equivalent means. [29 CFR 1926.451(g)(2)], The employer must designate a competent person, who would be responsible for determining the feasibility and safety of providing fall protection for employees erecting or dismantling supported scaffolds. Cross-bracing is required on both front and back sides of each scaffold buck or frame. All joints must be Suspension scaffold rigging must at least 6 times the intended load. [, 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. [, Any part of a scaffold that has been damaged or weakened so that it no longer meets OSHA strength requirements must either be repaired, replaced, braced, or removed from service. Supported scaffold poles, legs, posts, frames, and uprights shall bear on base plates and mud sills (or other adequate firm foundation). Tube and coupler scaffolds over 125 feet in height must be designed by a registered professional engineer. Is secured to prevent lateral movement. Such retraining is required in at least the following situations [. The working surface was solidly planked. (Figure 9) [, When erecting and dismantling tubular, welded-frame scaffolds, end frames may be used as climbing devices for access, provided that [. We commit to utilizing our collective talent to support your risk management and insurance goals. Such a scaffold can be set up on either side of the building, and offers a great level of flexibility. For example, a . 5. 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 space between the last plank and the uprights cannot exceed 9 1/2 inches. 2. (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. [, Not be used as work platforms when rungs are less than 11 inches in length, unless each affected employee uses appropriate fall protection. The guardrail system shall be installed along all open sides and ends of the platform before being used as a work platform by employees. Unstable objects, such as bricks, cinder blocks, buckets, scrap lumber, etc., shall not be used to support or level scaffolds. (j) Scaffold planks must extend over their end supports not less than 6 inches nor more than 18 inches. Employees must not work on platforms covered with snow, ice or other slippery material. 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. . Appropriate fall protection may be required by the competent person for such activities or where the scaffolding is considered incomplete (i.e. Because the frames are stacked, the cross braces have to keep the scaffold plumb, level, and square. Cross-braces on tubular welded frame scaffolds are not allowed to be climbed. We need to follow scaffolding safety procedures. 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. (For mobile scaffolds, the maximum height of the screw jack is 12 inches.). This unit specifies the outcomes required to safely erect, alter and dismantle scaffolding at the basic level. As they were lifting the scaffold, the top section partially separated from the adjoining section, toppled over, and contacted a power line. Employees involved with set up (or near) the scaffold must wear hard hats. Materials being hoisted onto a scaffold must Changes at the worksite present a hazard for which an employee has not previously been trained. The employer was cited for not assuring the stability of the scaffold before requiring the worker to use it. These are only a few basic physical structures of scaffold towers. Fasten all couplers and/or connections . The frames must be plumb and level and spaced to adequately support the loads. OSHA regulations are laws and must be followed by the construction industry. Guardrails May Have Saved Him, Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Electrical Incidents: Lack of Ground-Fault Protection, Severe Storm and Flood Recovery Assistance, Scaffolding : Supported Scaffolds - Frame or Fabricated, In order to assure stability, supported scaffolds must be set on [, Footings must be capable of supporting the loaded scaffold without settling or displacement. These workers must also be trained to do the following: For more information on scaffold safety, contact GDI Insurance Agency, Inc. and visit OSHAs Safety and Health Topics page at www.osha.gov/SLTC/scaffolding/. The correct procedures for dealing with those hazards. One concerns the employees on the scaffold itself, and the other concerns employees who may work in or enter the area below the scaffold. To accomplish this, the scaffold design must incorporate a realistic . Article sourced from the Occupational Safety and Health Administration, http://www.OSHA.gov. 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. 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. And also, there are lots of sites that sell scaffolding spare parts. Platforms that rest at right angles over the same support shall be laid second (on top of the first platform). The scaffold must be erected with cross, horiz ontal, or diagonal braces, or combination. This is one more reason for always using fall protection. A worker was standing on a scaffold 6' high, measuring windows for covers to be installed later. An access ladder or equivalent safe access must be provided. Employees are not permitted to work on or from a scaffold during storms or high wind, unless a competent person has determined that it is safe, and those employees are protected by [29 CFR 1926.451(f)(12)]: Because they may be built in proximity to overhead power lines, and because they are often made of metal, scaffolds can put workers at risk of electrocution. 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. The objective is to reduce the tripping hazard by having the ends of the top layer of planks form a straight line, rather than a saw-toothed edge, which increases tripping hazards. Runners must: Extend over two poles at minimum. Additional requirements for these scaffolds can be found in their respective modules. OSHA has standards that apply specifically to the steps that must be taken to assure a stable scaffold base. 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. Proper access must be provided to access the work platform of the scaffold. Scaffolds must not be close enough to overhead power lines that they, or any conductive materials (e.g. [, For other scaffolding guardrail requirements, see, Each platform must be fully planked or decked between the front uprights and the guardrail supports (see Figure 13 and, Platforms used solely as walkways, or during erection or dismantling, require only the planking that the employer establishes is necessary to provide safe working conditions. [, Have uniform spacing between rungs of a maximum 16 inches. Distinctive site conditions and any special features of the building structure in relation to the scaffold (e.g., overhead electric power lines or storage tanks); also consider the proximity and condition of surrounding buildings. Avoid propping the scaffolding frames up on the side of the bed. [. Scaffolding means a convenient platform for persons to work at height. Ladder Jack Scaffold. Because metal frame scaffolds are conductive, power tools, cords, etc., that suffer insulation failure can electrify the entire scaffold. [, A distance of no less than 28 inches and no more than 37 inches from the upper surface of the stair rail to the forward edge of the tread, in line with the face of the riser. Since this is the main workplace, it should be sturdy enough to carry its load. [, Have rest platforms provided at a maximum of 35 foot vertical intervals. The top edge height of toprails on supported scaffolds must be between 36 inches and 45 inches. (Figure 13) [29 CFR 1926.451(b)(3) and 29 CFR 1926.451(b)(3)(ii)]. 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. 22.B.12 Scaffolds shall be plumb and level unless engineered and designed to contour as the structure does. Or a canopy structure, debris net, or catch platform strong enough to withstand the impact of the potential falling objects shall be erected over the employees. (Your Answer) 3. [, Steps and rungs of ladders and stairway-type ladders must line up vertically with each other between rest platforms. missing parts due to area obstructions). That's one of the reasons why we need to keep it inspected - for safety sake! bucks) must be joined together vertically by coupling or stacking pins (or equivalent means). Do not force frames or braces to fit - level the scaffold until proper fit can easily be made. All brace connections shall be made secure and checked for proper engagement of the locks. Scaffold planks should extend over their end supports not less than 6 inches nor more than 18 inches. Be sure scaffold stays plumb and level as . Requirements to prevent falls that apply only to these workers are addressed separately below. 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