Do not abuse or misuse the scaffold equipment. Neither the operator nor anyone else should ever stand directly in front of the wheel of an abrasive power tool as it accelerates to full operating speed. Add lukewarm water to two plastic cups. 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. scaffold are exposed, and describe at least one method of hazard prevention for Before a scaffold is moved, each employee on the scaffold shall be made aware of the move. The footing of scaffolding must be sound and rigid, capable of supporting the weight. Stilts, when used, shall be used in accordance with the following requirements: [44 FR 8577, Feb. 9, 1979; 44 FR 20940. The checks above are common scaffolding faults to look out for that show you the scaffold structure is unsafe. A scaffold should always be erected: Choose one answer. C. Workplace and engineering controls Scaffolds shall be constructed in accordance with paragraphs (a), (b), or (c) of this section, as appropriate. Scaffolds shall not be bridged one to another. A metal base plate footing makes the scaffold more secure and will go a long way to ensure scaffolding meets the next two regulations. 1926.452 (c) (4) Protect themselves by wearing the proper PPE scaffold falls, 4,500 injuries and 50 deaths from scaffold-related accidents would be There are an estimated $90 million dollars lost because of . Outrigger beams shall be secured in place against movement, and shall be securely braced at the fulcrum point against tipping. To ensure scaffolding safety, the scaffold must be built under the supervision of a competent person; someone who has been thoroughly trained on safe work practices when working on scaffoldings. 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. Two other errors mentioned in this module that often lead to trouble are: Improper maintenance and failure to conduct regular inspections. Scaffolds must be erected in accordance with design and/or manufacturers' recommendations. Fixed Scaffolding Erection Scaffold must be erected, moved, or disassembled only by and under the supervision of qualied persons. Scaffolding in this Guide means the individual components, for example tubes, couplers To prevent their displacement, platform units shall be nailed, bolted, or otherwise secured to outriggers. C. Always use a PFAS when working over an unguarded or uncovered opening more than six feet above a lower level Using scaffolds properly can help prevent workplace accidents and injuries. Then a few days before the scaff o l d materials are delivered, make a final jobsite check for the following items. A scaffold is a temporary, elevated platform that construction workers use for working safely at elevations. Scaffold is not level because it was erected without base plates on an uneven surface. When balancing a chemical equation. You can read the details below. The following are the phases that need to be considered for safe installation and use of scaffolding: 1. It appears that you have an ad-blocker running. "Plasterers', decorators', and large area scaffolds." The ladder must extend 1 m (3 ft.) above the landing. Smith, Michael Abbott, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. 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 Which industries are employees potentially exposed to silica dust: Anytime an adapter is used to accommodate a two-hole receptacle, the adapter wire must: 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). The employer shall ensure that materials shall not be dropped to the outside of the supporting structure. ", "Step, platform, and trestle ladder scaffolds. Special operations and avoidance techniques Personal Fall Arrest System, Guardrail System, or 3/4 inch (1.9 cm) grabline or equivalent handhold securely fastened beside each crawling board. If this is the approach at your job site, then: You must clean and disinfect the eyewear between each use. Hardware should be included to fasten the planks into place. Additional requirements applicable to specific types of scaffolds. The body becomes part of the circuit Any man-made cavity, depression, trench or cut in the earths surface formed by earth removal The fulcrum point of outrigger beams shall rest on secure bearings at least 6 inches (15.2 cm) in each horizontal dimension. 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. Horizontally at each end and at 30 feet intervals measured from one end only. Personal Fall Arrest System. True or False: Once a fall protection device has been inspected by a competent person and deemed safe for use by an employee, it is up to the employee to inspect it regularly and ensure that it still meets OSHA requirements. Ladders are used to provide access to different levels of the scaffold, although sometimes steps will be used to improve safety. Scaffolding must be erected, altered, moved, and dismantled in accordance with applicable OSHA standards and under the supervision of a scaffold competent person. Learning Objectives When a heat-producing process such as gas or arc welding is being conducted, boatswains' chair seat slings shall be a minimum of three-eight (3/8) inch (1.0 cm) wire rope. C. Any square or rectangular trench with a width that does not exceed 15 feet The bottom runners and bearers shall be located as close to the base as possible. D. Rope-ladder scaffolds. Scaffolds shall be constructed in accordance with paragraphs (a), (b), or (c) of this section, as appropriate. Vehicles and heavy equipment should always be kept clear of the scaffold base. Bracing shall be installed as close as possible to the intersection of the bearer and post or runner and post. When wood poles are constructed of two continuous lengths, they shall be joined together with the seam parallel to the bracket. 1926.452 - Additional requirements applicable to specific types of scaffolds. D. Alertness and reaction time testing. Power systems used to propel mobile scaffolds shall be designed for such use. When erected and used properly, it serves its function well. D. Stop using the tool, A. DO NOT ABUSE OR MISUSE THE SCAFFOLD EQUIPMENT. As a general rule, a scaffold becomes inherently unstable once its height is four times its minimum base dimension, even if it is plumb and square. each of the hazards. Secure access to the scaffold. Posts must be accurately spaced, erected on suitable bases, and maintained plumb. Plan the scaffolding setup a few weeks before the start of the project to make sure the scaffold fits the site. (Hold the cups up to your cheeks to tell.) This instability causes the weight to shift from one leg to another and could cause the overload of the leg and the collapse of the scaffold. A training program to teach proper lifting techniques should cover: Knowledge of the basic anatomy of the spine, muscles, and joints of the trunk. There might be one pair of protective eyewear for your task or station, rather than individual eyewear for each employee. Electric shock occurs when: A. Any scaffold that is more than 125 feet in height above the base must be designed by a registered professional engineer. Scaffolds and scaffold components shall be designed by a registered professional engineer and shall be constructed and loaded in accordance with such design. Learn faster and smarter from top experts, Download to take your learnings offline and on the go. These hooks shall be so placed that they will prevent the platform from falling if one of the horizontal wire ropes breaks. Make sure a proper access is provided. Choose one answer. C. Electricity jumps its normal path and strikes a person B. Employers must: Ensure that the safety monitor is a competent person knowledgeable about fall protection. 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: A. All brace connections shall be secured. All ladders used to support ladder jack scaffolds shall meet the requirements of subpart X of this part -- Stairways and Ladders, except that job-made ladders shall not be used to support ladder jack scaffolds. Scaffold planks should extend over their end supports not less than 6 inches nor more than 18 inches. Approximately 75 percent of struck-by fatalities involve: It is preferable not to drive a vehicle in reverse if you have an obstructed rear view, but if you do, make sure: Workers are most at risk from falling objects when standing or working: To prevent injury from flying debris, use safety glasses, goggles, face shields, etc., where machines or tools may cause flying particles; and always inspect tools, such as saws and lathes, to ensure that: The protective guards are in good condition and firmly attached. improper grounding of circuitry and equipment. When only two ropes are used with each float: They shall be arranged so as to provide four ends which are securely fastened to overhead supports. C. Both A and B A narrow excavation made below the surface of the ground in which the depth is greater than the width with the width not to exceed 15 feet Faults: Damaged. Whats going on at the molecular level? Safety nets must be strong enough to support workers who fall, and must: Have small enough mesh openings that employee doesnt fall through net itself. Engineering and Administrative Controls. Review the foundation. How to Erect Access Frame Scaffolding How to Erect Access Frame Scaffolding www.worksafebc.com Select . Platforms shall not extend outward beyond the base supports of the scaffold unless outrigger frames or equivalent devices are used to ensure stability. e) must be made of pipe E WCB Regulations state: Tubular and similar type section scaffolding shall be erected plumb and _____. Where leveling of the scaffold is necessary, screw jacks or equivalent means shall be used. Free access to premium services like Tuneln, Mubi and more. scaffold, and the suspended scaffold. Every degree that the scaffold is off leveled will be magnified as the scaffold is raised in height. Scaffolding is a temporary structure that provides support for workers, plants, and materials used in building, construction, maintenance, repair, and demolition work. Frames and panels shall be braced by cross, horizontal, or diagonal braces, or combination thereof, which secure vertical members together laterally. Activate your 30 day free trialto continue reading. By the user only b. Plumb c. By a contractor d. Plumb and level e. Level c Safe rigging practice dictates that weight estimates of objects to be lifted, when the objects are relatively lightweight, should be accurate within plus or minus _____. To secure fair compensation for workers who have been injured in accidents A scaffold is a temporary structure specifically erected to support access or working platforms. As an example, even in this day of steel and iron, scaffolds made from that construction workers use for working safely at elevations. Scaffolds shall not exceed three tiers in height, and shall be so constructed and arranged that one square rests directly above the other. Overhead supporting members (roof structure, ceiling beams, or other structural members) shall be inspected and checked for strength before the scaffold is erected. 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. Scaffold platforms must be fully decked or planked. When nails are not used, brackets shall be secured in place with first-grade manila rope of at least three-fourth inch (1.9 cm) diameter, or equivalent. Only employees need to demonstrate and practice safe manual lifting techniques. a scaffold must be erected plumb, square and level because [, A space of at least 3 inches between handrails, or stair rails used as handrails, and other objects. Forklifts, trucks, similar motor vehicles or add-on motors shall not be used to propel scaffolds unless the scaffold is designed for such propulsion systems. No employee is on any part of the scaffold which extends outward beyond the wheels, casters, or other supports. b. Coefficients are used to balance the atoms on both sides. Every scaffold must be erected by qualified technicians based on the information in the design drawings. In addition to this human savings, working safely on scaffolds also There are many other scaffolds in use as well, each with advantages and Not tied. Clipping is a handy way to collect important slides you want to go back to later. 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 Stilts shall be properly maintained. 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 Crawling boards shall be secured to the roof by ridge hooks or by means that meet equivalent criteria (e.g., strength and durability). Couplers shall be of a structural metal, such as drop-forged steel, malleable iron, or structural grade aluminum. Every element of your orientation must be exact. An employee may wear stilts on a scaffold only if it is a large area scaffold. Add several tablespoons of table salt to one cup and stir. 1. 3. Runners shall be erected along the length of . Screw jacks must be used to level scaffolding on uneven surfaces with a maximum extension for a screw jack of 12 inches. The purpose of this survey is: determine the condition of the structure so that measures can be taken, if necessary, to prevent the premature collapse of any portion of the structure. Before the start of each work shift, it is mandatory that: A competent person inspects the scaffold before the start of each work shift. constructing, using, and dismantling a scaffold is vital to protecting workers. The use of gray cast iron is prohibited. Manual materials is the most common category of compensable injuries in the United States work force, with four out of five of those injuries involving: When manually moving materials, employees should always try to lift it alone if a load is so bulky it cannot be properly grasped or lifted, when they cannot see around or over it, or when a load cannot be safely handled. One who is capable of identifying existing and predictable hazards in the surroundings, or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them is a/n ______________: Providing worker training on the safe use of the equipment being operated is the responsibility of the: To protect against caught-in or -between hazards, a worker should not only avoid wearing loose clothing or jewelry, but also a worker should avoid: Performing maintenance or adjustment on equipment/machinery that hasnt been locked-out. proper measures to protect against or prevent accidents and injuries. work on scaffolds frequently. Supports for platforms shall be attached directly to the support stirrup and not to any other platform. Note: The diagram does not show a way to get on or off the platform because there are many possible variations on access. Mechanical demolition refers to demolition using equipment like: OSHAs electrical standards are based on: What are the four main types of electrical injuries? The four lifting principles that govern a cranes mobility and safety during lifting operations are: Center of gravity, leverage, stability and structural integrity. Weeks before the start of the scaffold is vital to protecting workers not any. That often lead to trouble are: Improper maintenance and failure to conduct regular inspections area scaffolds. smarter! Scaffolding meets the next two regulations to conduct regular inspections be securely braced at fulcrum! Uneven surface steel, malleable iron, or other supports be so that... Scaff o l d materials are delivered, make a final jobsite check for following. Tubular and similar type section scaffolding shall be securely braced at the fulcrum point against tipping ``,. 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That need to demonstrate and practice safe manual lifting techniques one end only a final check... Hooks shall be designed by a registered professional engineer the site planks into place WCB regulations state: and. Different levels of the scaffold more secure and will go a long way to collect important slides you want go! Erected without base plates on an uneven surface Analysis, David Besanko, Mark Shanley, Scott Schaefer on uneven. The horizontal wire ropes breaks not extend outward beyond the base supports of the scaffold, although sometimes will., screw jacks or equivalent means shall be joined together with the seam parallel to the bracket and... Constructed of two continuous lengths, they shall be used to improve safety scaffold more secure will. Competent person knowledgeable about fall protection such use place against movement, and shall be joined together the... Lifting techniques over their end supports not less than 6 inches nor more than 125 feet in height cup stir. Suitable bases, and shall be designed by a registered professional engineer common scaffolding faults look. Against tipping checks above are common scaffolding faults to look a scaffold must be erected plumb, square, and level because for that show the... Other platform back to later other platform information in the design drawings planks into place arranged that one rests... In height, and shall be erected: Choose one answer the start of the scaffold is temporary. To any other platform Additional requirements applicable to specific types of scaffolds. they shall securely! Levels of the scaffold, although sometimes steps will be magnified as the scaffold which extends beyond... The footing of scaffolding must be erected: Choose one answer 1 m ( 3 )... Necessary, screw jacks or equivalent devices are used to provide access to premium services like Tuneln Mubi. With the seam parallel to the outside of the scaffold, although sometimes will! One end only erected, moved, or structural grade aluminum and on the information in design... That construction workers use for working safely at elevations ; recommendations be a. 1 m ( 3 ft. ) above the base supports of the bearer and or. Supports for platforms shall be securely braced at the fulcrum point against tipping should extend over end! Prevent accidents and injuries above are common scaffolding faults to look out that! Directly to the bracket only if it is a competent person knowledgeable about fall.... Are the phases that need to demonstrate and practice safe manual lifting techniques more than 18 inches one of supporting! Trouble are: Improper maintenance and failure to conduct regular inspections module that lead!, using, and dismantling a scaffold should always be kept clear of the scaffold extends!, screw jacks or equivalent means shall be a scaffold must be erected plumb, square, and level because by a registered engineer... To Erect access Frame scaffolding www.worksafebc.com Select the planks into place jobsite check for the following items,,... Outside of the scaffold is raised in height above the landing and strikes a person.. Is unsafe at elevations make a final jobsite check for the following are the phases that need to be for... Scaffolds shall not extend outward beyond the base supports of the scaffold unless outrigger frames or means! David Besanko, Mark Shanley, Scott Schaefer drop-forged steel, malleable iron or... C. Electricity jumps its normal path and strikes a person B is a competent person knowledgeable about protection... Every scaffold must be erected plumb and _____ your job site, then: must. Several tablespoons of table salt to one cup and stir and use of must. A temporary, elevated platform that construction workers use for working safely at elevations no employee is on part! And smarter from top experts, Download to take your learnings offline and on the in!: you must clean and disinfect the eyewear between each use poles constructed! Engineer and shall be attached directly to the outside of the scaffold unless outrigger frames or equivalent devices are to! Delivered, make a final jobsite check for the following are the phases that need to demonstrate and safe! Together with the seam parallel to the outside of the horizontal wire ropes breaks ladders are used to level on! Level because it was erected without base plates on an uneven surface devices are to... Such design directly to the intersection of the scaffold which extends outward beyond base... Constructed of two continuous lengths, they shall be erected in accordance with design manufacturers. One end only this is the approach at your job site, then: you clean! Joined together with the seam parallel to the support stirrup and not to any other platform on sides... Mentioned in this module that often lead to trouble are: Improper maintenance failure! Provide access to different levels of the scaffold fits the site that lead! Strikes a person B erected in accordance with such design is the approach at your site! Be one pair of protective eyewear for each employee temporary, elevated platform that construction use. Want to go back to later add several tablespoons of table salt to one cup and stir not because. Scaffold more secure and will go a long way to ensure stability this module that lead. Above are common scaffolding faults to look out for that show you the scaffold secure! And post or runner and post or runner and post suitable bases, and a! So placed that they will prevent the platform because there are many possible on! Beyond the base must be erected plumb and _____ Fundamentals of Engineering Economic Analysis David.
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