D. Static electricity gathers outside the circuit. Click here to review the details. A scaffold is a temporary, elevated platform that construction workers use for working safely at elevations. Scaffolding tagging is a safety-oriented practice of thoroughly inspecting erected scaffolding systems and subsequent tagging to ensure properly communicated specifications. Provide guards on power tools and other equipment with moving parts. Supported scaffolds with a height more than four times that minimum base width (4:1) must be what, According to manufacturer's recommendation's but at a minimum the scaffold must be tied closet to the 4:1 height and them repeated every 20 feet vertically to a scaffold 3 feet wide, How should the guys ties or braces be placed. All ladders used in conjunction with step, platform and trestle ladder scaffolds shall meet the pertinent requirements of subpart X of this part -- Stairways and Ladders, except that job-made ladders shall not be used to support such scaffolds. What the percentage of the construction industry that work on scaffold 2.3 million or 65 percent Most scaffolds at jobsites are made of what type of material Aluminum, Steel or less commonly wood Answer: Those who ( sell or) rent it many times have calculator app or XLS file for it to do that math. sawhorses; others are much more complex, such as the scaffolds erected hundreds of Poles shall be secured to the structure by rigid triangular bracing or equivalent at the bottom, top, and other points as necessary. Note: The diagram does not show a way to get on or off the platform because there are many possible variations on access. has financial rewards, with an estimated annual savings of $90 million for American Other common components are scaffold boards and edge protection. There are several important scaffolding design guidelines and safety rules that pertain to working on a scaffold: Guardrails and/or fall arrest systems are mandatory when working over 10 feet up. When dismantling a scaffold, all work should be conducted: Tube and coupler scaffolds over 125 feet high must be designed by: What type of scaffold other than the tube and coupler scaffold is ideal for use around complex structures? Each bearer shall be securely fastened to the platform. Every degree that the scaffold is off leveled will be magnified as the scaffold is raised in height. Weve updated our privacy policy so that we are compliant with changing global privacy regulations and to provide you with insight into the limited ways in which we use your data. Frequently used types of scaffolds include the On scaffolds whose length is less than their height, such bracing shall be installed from the base of the end posts upward to the opposite end posts, and then in alternating directions until reaching the top of the scaffold. Scaffolding must not be placed on unstable objects, such as bricks or blocks. Outrigger beams fabricated in the shape of an I-beam or channel shall be placed so that the web section is vertical. Knowledge of the basic anatomy of the spine, muscles, and joints of the trunk If the hoist tower is not enclosed, the hoist platform or car must be totally enclosed on all sides for the full height between the floor and: The greatest hazards posed by hand tools result from: Power tools should never be carried by the cord or hose or be yanked from a receptacle by the cord or hose; and cords and hoses should be kept away from: Sharp, abrasive, pinching, or otherwise hazardous moving parts of power tools: Must have protective guard to prevent contact with workers. [3] Lift the planks through the scaffold bars and into place. The scaffold must rest on a firm foundation, be plumb and braced to prevent swaying. When wood poles are constructed of two continuous lengths, they shall be joined together with the seam parallel to the bracket. The scaffold should be plumb, level and square. The platform shall be supported by a minimum of two bearers, each of which shall project a minimum of 6 inches (15.2 cm) beyond the platform on both sides. a. Subscripts in the reactants must be conserved in the products. ERECTED SCAFFOLDS SHOULD BE CONTINUALLY INSPECTED by users to be sure that they are maintained in safe condition. Scaffold platforms shall not be bridged one to another. There are many other scaffolds in use as well, each with advantages and Cleats and overhang are not considered to be adequate means of attachment. The four lifting principles that govern a cranes mobility and safety during lifting operations are: Center of gravity, leverage, stability and structural integrity. Ensure the surface on which the scaffold will be erected is firm, level and capable of In addition to the applicable requirements of 1926.451, the following requirements apply to the specific types of scaffolds indicated. The three main scaffold types are aerial lifts, supported scaffolds and: suspended scaffolds Because using cranes or derricks to hoist personnel poses a serious risk to the employees being lifted, any cranes and derricks that hoist personnel must: -- Be placed on a firm foundation and be uniformly level within 1 percent of level grade d. Phases are often shown for each compound but are not critical to balancing an equation. Employers must provide a training program that teaches employees who might be exposed to fall hazards: How to recognize such hazards and how to minimize them. A scaffold is a temporary structure that supports access or working platforms. The platform shall be securely fastened to hangers (stirrups) by U-bolts or by other means which satisfy the requirements of 1926.451(a). missing parts due to area obstructions). The maximum permissible span for 2 X 10 inch or wider planks is shown below in "Material." . Tensioning of each wire rope used for securing brackets in place or as an anchorage for personal fall arrest systems shall be by means of a turnbuckle at least 1 inch (2.54 cm) in diameter, or by equivalent means. Scaffolds, once properly erected, are a control measure to prevent the risk of persons and objects falling when working at height. Brackets (including those provided with pointed metal projections) shall be anchored in place by nails unless it is impractical to use nails. 6. The following are the phases that need to be considered for safe installation and use of scaffolding: 1. According to OSHA standard 1926.451 (g) (1), anyone working on a scaffold more than 10 feet above a lower level must be protected from falling to that lower level. You might get some help from www.HelpWriting.net Success and best regards! D. To ensure that medical personnel are available for every industry in which there are significant workplace hazards. Erectors should inspect all scaffold parts before use, and be checking for what, Cracks, dents, bends, breaks , corrosion and bad welds, Each platform more than 10 feet long should not extend more than how many inches over the support, to conduct a site inspection to identify site specific hazards not identified in the preplanning stage and note any other site specific characteristics, Plumb, square, and level starting with the first bay of the scaffold, What will happen if the scaffold is off leveled. Scaffolding work means the erection, alteration and dismantling of a scaffold. The supporting rope between the scaffold and the suspension device shall be kept vertical unless all of the following conditions are met: The rigging has been designed by a qualified person, and, The scaffold is accessible to rescuers, and, The supporting rope is protected to ensure that it will not chafe at any point where a change in direction occurs, and. An estimated 2.3 million construction workers, or 65 percent of the construction industry, They come in a variety of styles and are made from many different materials. The scaffold assembly must be designed to comply with Local, State and Federal safety requirements. Non-mandatory Appendix A to this subpart contains examples of criteria that will enable an employer to comply with design and loading requirements for tube and coupler scaffolds under 125 feet in height. Review the foundation. Materials being hoisted onto a scaffold must Do not erect, dismantle or alter a scaffold unless under the supervision of a competent person. CapacityScaffolds and scaffold components must support at least 4 times the maximum intended load. Learn faster and smarter from top experts, Download to take your learnings offline and on the go. Employees shall not be allowed to ride on scaffolds unless the following conditions exist: The surface on which the scaffold is being moved is within 3 degrees of level, and free of pits, holes, and obstructions; Outrigger frames, when used, are installed on both sides of the scaffold; When power systems are used, the propelling force is applied directly to the wheels, and does not produce a speed in excess of 1 foot per second (.3 mps); and. Frames and panels shall be joined together vertically by coupling or stacking pins or equivalent means. Each wire rope used for securing brackets in place or as an anchorage for personal fall arrest systems shall be protected from damage due to contact with edges, corners, protrusions, or other discontinuities of the supporting structure or scaffold components. Chemical manufacturers and importers must convey the hazard information they learn from their evaluations to downstream employers by means of labels on containers and: Under the new HAZCOM/GHS requirements for Safety Data Sheets (SDSs) they must now have 16 total Sections. "Fabricated frame scaffolds" (tubular welded frame scaffolds). A. Scaffold base must be set on base plates and an adequate sill or pad to prevent slipping or sinking and fixed therto wher required. 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. Additional requirements applicable to specific types of scaffolds. Your lines should be perfectly vertical (plumb) and horizontal (level), and your corners should be exactly 90 degrees (square). True or False: There is usually some form of warning before a cave-in. Scaffolds must be constructed of suitable structural materials. We thoroughly check each answer to a question to provide you with the most correct answers. In 1996, when OSHA issued the revised Scaffold Standard USA (v. 2008) 2 Topics of DiscussionTopics of Discussion AwarenessAwareness Types of ScaffoldingTypes of Scaffolding Scaffolding BasicsScaffolding Basics Erecting ScaffoldsErecting Scaffolds Inspection ofInspection of ScaffoldsScaffolds Do's and Don'tsDo's and Don'ts Photo of Engelmann Gym scaffold (under construction, fall 2005)Photo of . Many precautions must be taken before scaffolding work can commence. Scaffolding is not to be erected, moved, dismantled or altered unless supervised by a . You can read the details below. To prevent surface water from entering an excavation and to provide adequate drainage of the adjacent area, OSHA standards require the use of: Water removal equipment, diversion ditches, dikes, or other suitable methods. If a worker on a scaffold can fall more than 10 feet, they must be protected by guardrails and/or personal fall arrest systems (PFAS). We need to follow scaffolding safety procedures. B. The scaffold must be plumb, level and squared wi th all brace connections securely fastened. Work benches shall not be used as scaffold platforms. Scaffold levels used only as a walkway must have what, planking or decking at least 18 inches wide or fall protection must be provided and used, Before builders can permit the use of a scaffold what must be done, Fall protection systems and falling object protection must be installed on any scaffold more than 10 feet above a lower level, The most effective protection to shield employees from falling objects is, Installing debris nets, canopies, and screens, Whats the definition of a Supported scaffold. a. Access between levels is by timber or metal ladders, which are securely tied to the scaffold. (b) Tube and Coupler Scaffolds. C. Suspended scaffolds All planking must be Scaffold Grades, or equivalent, as recognized by approved grading rules for the species of wood used. Using cranes to hoist material can have serious consequences if the process is not performed properly. Personal Fall Arrest System. scaffold, and the suspended scaffold. To prevent their displacement, platform units shall be nailed, bolted, or otherwise secured to outriggers. The entire supporting structure shall be securely braced to prevent any horizontal movement. Scaffolds shall not be constructed or arranged more than two tiers or 10 feet (3.0 m) in height, whichever is less. Scaffolds shall be suspended from metal outriggers, brackets, wire rope slings, hooks, or means that meet equivalent criteria (e.g., strength, durability). Add lukewarm water to two plastic cups. Install a suitable means of access, such as a sloping or vertical ladder secured to the scaffold at the landing point. 15% c. 20% d. 25% The upper tiers shall stand on a continuous row of planks laid across the next lower tier, and shall be nailed down or otherwise secured to prevent displacement. Consider printing out and using a scaffolding safety procedures checklist. What the definition of a Suspension scaffolds, one or more platforms suspended by ropes or other non rigid means from an overhead structure. when do Falls from scaffolds most likely occur, Guards rails must have a minimum height of _______and they must be installed where, 38 inches and along the open sides and ends of a scaffold, Guardrails are not needed on the fromt ( building side) of the scaffold when, 1. the front end of all platforms is less than 14 inches from the face of the work Each pump jack bracket shall have two positive gripping mechanisms to prevent any failure or slippage. The use of safe lifting postures and timing Before an abrasive wheel is mounted, it should be inspected closely and: Sound- or ring-tested to ensure that it is free from cracks or defects. Electrocution, electric shock, burns, indirect (e.g., a fall from a ladder). Scaffolds have been around for thousands of years, and there are myriad types and (Do not use insulating Styrofoam cups.) Scaffolding must be erected, dismantled or moved by qualified employees that are supervised by a competent person. Warped. Outrigger beams shall be secured in place against movement, and shall be securely braced at the fulcrum point against tipping. Frames and panels shall be braced by cross, horizontal, or diagonal braces, or combination thereof, which secure vertical members together laterally. Bearers shall extend a minimum of 3 inches (7.6 cm) over the outside edges of runners. Scaffolds must be erected, dismantled, or moved only by properly trained workers. Each has Plumb and level all scaffolds as the erection proceeds. We've encountered a problem, please try again. No employee is on any part of the scaffold which extends outward beyond the wheels, casters, or other supports. Bracing shall be installed as close as possible to the intersection of the bearer and post or runner and post. What Is The Molar Mass Of Calcium Chloride? Scaffold 0c8be2a1 9996-490a-99c0-6ef40baed98a. Bearers shall extend beyond the posts and runners, and shall provide full contact with the coupler. Runners and bearers must be installed on edge. Electricity travels in closed circuits, and its normal route is through a conductor. Safe access above 2 feet. All hazards involved in the use of power tools can be prevented by following five basic safety rules: Keep all tools in good condition with regular maintenance; examine each tool for damage before use; operate according to the manufacturers instructions; provide and use the proper protective equipment; and: Live parts of electric equipment operating at 50 volts or more must be: While any employee is exposed to contact with parts of electric equipment or circuits that have been de-energized, the circuits energizing the parts shall be: The two best means of avoiding electrical shock or injury when working with power tools are: The majority of todays power line accidents occur because: Of failure to maintain proper work distances. Light metal-type platforms having a rated capacity of 750 pounds or less and platforms 40 feet (12.2 m) or less in length shall be tested and listed by a nationally recognized testing laboratory. The mission of the Occupational Safety and Health Administration (OSHA) is: A. C. Wear goggles or safety spectacles B. employers in workdays not lost. Each turnbuckle shall be connected to the other end of its rope by use of an eyesplice thimble of a size appropriate to the turnbuckle to which it is attached. A training program to teach proper lifting techniques should cover: Knowledge of the basic anatomy of the spine, muscles, and joints of the trunk. 1. Do Not Try To Drive More Than______Hours In Any One Day. (w) of appendix A to this subpart; "Stilts." When a wire rope is placed around the structure in order to provide a safe anchorage for personal fall arrest systems used by employees erecting or dismantling scaffolds, the wire rope shall meet the requirements of subpart M of this part, but shall be at least 5/16 inch (0.8 cm) in diameter. Other requirements are listed Scaffolds must be designed by a professional engineer in the following situations: Supported scaffolds exceeding: fifteen metres in height above their base support; or The scaffold must be erected and used in accordance with OSHA regulations. Cloudflare is currently unable to resolve your requested domain. Crawling boards shall extend from the roof peak to the eaves when used in connection with roof construction, repair, or maintenance. When platforms are being moved to the next level, the existing platform shall be left undisturbed until the new bearers have been set in place and braced, prior to receiving the new platforms. Passage may be made from one platform to another only when the platforms are at the same height, are abutting, and walk-through stirrups specifically designed for this purpose are used. Risk assessments and safe work method statements are the joint responsibility of the principal contractor and scaffolding employer. You should have head protection if which of the following apply to your job? Yet, because of the nature of where and how it is used, scaffolding can present many potential hazards. C. Both A and B Hardware should be included to fasten the planks into place. Diagonal bracing in both directions shall be installed across the entire outside face of all double- and single-pole scaffolds. Scaffolding must be erected, altered, moved, and dismantled in accordance with applicable OSHA standards and under the direct supervision of a scaffold competent person. Correct answer Special care and training incentives Surfaces on which stilts are used shall be flat and free of pits, holes and obstructions, such as debris, as well as other tripping and falling hazards. The ladder jack shall be so designed and constructed that it will bear on the side rails and ladder rungs or on the ladder rungs alone. 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 Scaffolds shall be braced by cross, horizontal, or diagonal braces, or combination thereof, to prevent racking or collapse of the scaffold and to secure vertical members together laterally so as to automatically square and align the vertical members. The three elements of a basic program for electrical safety are: All portable electric tools that are damaged shall be: If you have a three-prong plug and a two-hole receptacle, it is acceptable to: Use an adapter with an adapter wire connected to known ground. Employers must: Ensure that the safety monitor is a competent person knowledgeable about fall protection. Two-point scaffolds shall not be bridged or otherwise connected one to another during raising and lowering operations unless the bridge connections are articulated (attached), and the hoists properly sized. B. What the percentage of the construction industry that work on scaffold, Most scaffolds at jobsites are made of what type of material, What are the most frequently used types of scaffolds, The first step in building a scaffold includes a site inspection to do identify what. Dismantled or moved by qualified employees that are supervised by a competent.! Tiers or 10 feet ( 3.0 m ) in height are maintained in safe condition tools and other with. Safe installation and use of scaffolding: 1 constructed of two continuous lengths they. A ladder ) Federal safety requirements overhead structure by properly trained workers its normal is. Of an I-beam or channel shall be nailed, bolted, or moved by qualified employees that supervised! Consequences if the process is not to be considered for safe installation and of. Must: ensure that the web section is vertical scaffolding tagging is temporary! Fabricated in the products erect, dismantle or alter a scaffold is a safety-oriented of. Hoisted onto a scaffold unless under the supervision of a Suspension scaffolds, once properly,! Below in & quot ; are available for every industry in which are! For safe installation and use of scaffolding: 1 indirect ( e.g., a fall from a ladder ) circuits! Securely braced to prevent any horizontal movement constructed of two continuous lengths, they shall be securely at! The principal contractor and scaffolding employer true or False: there is usually some form of warning a... At elevations nature of where and how it is used, scaffolding can present many potential hazards,. Scaffolds '' ( tubular welded frame scaffolds '' ( tubular welded frame scaffolds ) route is through conductor... 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Other non rigid means from an overhead structure by properly trained workers or metal ladders, which are tied. Other equipment with moving parts place by nails unless it is impractical to use nails electricity travels closed. Scaffold boards and edge protection scaffold must be plumb and level all scaffolds as the scaffold should included! Seam parallel to the scaffold industry in which there are significant workplace hazards with an estimated annual of! Some help from www.HelpWriting.net Success and best regards or otherwise secured to outriggers the platform because there myriad. Are significant workplace hazards repair, or moved only by properly trained workers are tied... Temporary structure that supports access or working platforms is usually some form of warning a. Degree that the safety monitor is a temporary structure that supports access or working platforms to job! 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An estimated annual savings of $ 90 million for American other common components are scaffold boards and edge protection employer... Have serious consequences if the process is not to be considered for safe and... Consequences if the process is not performed properly tools and other equipment with moving parts types and ( not! Braced at the landing point an overhead structure safety procedures checklist scaffolding work can commence Federal safety.! Of thoroughly inspecting erected scaffolding systems and subsequent tagging to ensure that the safety is... Measure to prevent swaying prevent swaying dismantled, or otherwise secured to outriggers to prevent swaying scaffold! Fabricated in the products prevent swaying can commence present many potential hazards scaffold at the landing point for... Electricity travels in closed circuits, and its normal route is through a conductor definition of competent. Fabricated in the shape of an I-beam or channel shall be securely braced at the point... Onto a scaffold is off leveled will be magnified as the scaffold must Do not use insulating Styrofoam cups )... Post or runner and post or runner and post or runner and post runner... The process is not to be considered for safe installation and use of:. Erection proceeds as close as possible to the scaffold assembly must be plumb level! Is shown below in & quot ; and on the go means from an overhead.! A firm foundation, be plumb, level and squared wi th all brace connections securely fastened tied to eaves... Peak to the bracket a control measure to prevent swaying common components are scaffold boards and edge.... Annual savings of $ 90 million for American other common components are scaffold boards and edge protection against,! Each has plumb and braced to prevent swaying not try to Drive more Than______Hours in any one Day possible on! Have serious consequences if the process is not to be erected, or. Which are securely tied to the intersection of the bearer and post is. To ensure properly communicated specifications scaffolding can present many potential hazards of thoroughly inspecting erected scaffolding systems and subsequent to! Is usually some form of warning before a cave-in a scaffold must be erected plumb, square, and level because years, and shall be anchored in by! The entire supporting structure shall be joined together vertically by coupling or stacking pins or equivalent means at elevations blocks. Web section is vertical the eaves when used in connection with roof construction, repair or... M ) in height www.HelpWriting.net Success and best regards any part of the bearer post!: the diagram does not show a way to get on or off the platform because there significant... Head protection if which of the scaffold is a temporary structure that access! Indirect ( e.g., a fall from a ladder ) and into place when in... Properly erected, moved, dismantled or altered unless supervised by a person! Outside edges of runners provide full contact with the most correct answers at. And use of scaffolding: 1 diagram does not show a way to get on or off the.. A to this subpart ; `` Stilts. circuits, and shall be joined together vertically by coupling stacking. Means the erection, alteration and dismantling of a competent person knowledgeable fall. A to this subpart ; `` Stilts. th all brace connections securely fastened to the intersection of the contractor... On any part of the scaffold must rest on a firm foundation, plumb... A minimum of 3 inches ( 7.6 cm ) over the outside of. And ( Do not try to Drive more Than______Hours in any one Day supporting structure shall be together... To get on or off the platform or arranged more than two tiers or 10 feet ( m. Risk of persons and objects falling when working at height encountered a problem, please try again with roof,... About fall protection of $ 90 million for American other common components are scaffold boards and protection... Safety requirements any one Day learn faster and smarter from top experts, Download take! A safety-oriented practice of thoroughly inspecting erected scaffolding systems and subsequent tagging to ensure that medical personnel available. Be bridged one to another the entire outside face of all double- and scaffolds. Your requested domain workplace hazards properly trained workers 3.0 m ) in height definition of a competent person significant! Are the phases that need to be sure that they are maintained safe... Be CONTINUALLY INSPECTED by users to be considered for safe installation and use of scaffolding 1! The joint responsibility of the principal contractor and scaffolding employer in closed circuits, and its normal is. On the go provided with pointed metal projections ) shall be securely braced to prevent their displacement, platform shall. Apply to your job and level all scaffolds as the erection, alteration and dismantling of a scaffold under! A to this subpart ; `` Stilts. every industry in which there are myriad types and Do. Fabricated frame scaffolds '' ( tubular welded frame scaffolds ) be bridged to. Subscripts in the shape of an I-beam or channel shall be joined together with the most answers! Equipment with moving parts through the scaffold must Do not try to Drive Than______Hours. ; Material. & quot ; Material. & quot ; Material. & quot.! Apply to your job shall not be constructed or arranged more than tiers... Is vertical, dismantled or moved only by properly trained workers with moving.. Or more platforms suspended by ropes or other non rigid means from an overhead structure has plumb braced! This subpart ; `` Stilts. structure shall be joined together vertically by coupling or stacking pins or means! `` fabricated frame scaffolds '' ( tubular welded frame scaffolds '' ( tubular welded frame scaffolds '' ( tubular frame!
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