The support connection shall be arranged so as to prevent the needle beam from rolling or becoming displaced. Float Scaffold. In this article, Civil Engineer and Construction Safety Expert, Robert J. O'Connor discusses the anatomy of a baker scaffold, proper assembly, common hazards and relevant safety standards. When horses are arranged in tiers, each tier shall be crossbraced. "Multi-point adjustable suspension scaffolds, stonesetters' multi-point adjustable suspension scaffolds, and masons' multi-point adjustable suspension scaffolds.". The bottom runners and bearers shall be located as close to the base as possible. We've encountered a problem, please try again. On straight run scaffolds, longitudinal bracing across the inner and outer rows of posts shall be installed diagonally in both directions, and shall extend from the base of the end posts upward to the top of the scaffold at approximately a 45 degree angle. 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. which of the following statements is false? Posts must be accurately spaced, erected on suitable bases, and maintained in plumb. 5. These rules were combined under the umbrella of OSHA. 7. Risk assessments and safe work method statements are the joint responsibility of the principal contractor and scaffolding employer. work on scaffolds frequently. You should have head protection if which of the following apply to your job? On scaffolds whose length is greater than their height, such bracing shall be repeated beginning at least at every fifth post. Each bracket, at the contact point between the supporting structure and the bottom of the bracket, shall be provided with a shoe (heel block or foot) capable of preventing the lateral movement of the bracket. Fixed Scaffolding Erection Scaffold must be erected, moved, or disassembled only by and under the supervision of qualied persons. Wooden bracket-form scaffolds shall be an integral part of the form panel. Scaffolding means a convenient platform for persons to work at height. Runners shall extend over a minimum of two poles, and shall be supported by bearing blocks securely attached to the poles. The first step in building a scaffold is to: 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. 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. Always use . If the scaffold is built even a few degrees off plumb, the resulting instability could cause the weight of the scaffold to shift . Scaffolding, also called scaffold or staging, is a temporary structure used to support a work crew and materials to aid in the construction, maintenance and repair of buildings, bridges and all other man-made structures.Scaffolds are widely used on site to get access to heights and areas that would be otherwise hard to get to. 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. Learn faster and smarter from top experts, Download to take your learnings offline and on the go. The most effective way to prevent exposure to crystalline silica is: Substitution of a product that contains silica with a product that doesnt contain silica. ", "Step, platform, and trestle ladder scaffolds. An estimated 2.3 million construction workers, or 65 percent of the construction industry, Scaffolds made of wood shall be reinforced with gussets on both sides of each corner. 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. Scaffolds must be plumb, level, and squared. All brace connections shall be secured. Scaffolding work means the erection, alteration and dismantling of a scaffold. This means guardrails, a personal fall arrest system or both, depending on the situation. ( e) Bricklayers' square scaffolds (squares). Every element of your orientation must be exact. 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. The inboard end of outrigger beams, measured from the fulcrum point to the extreme point of anchorage, shall be not less than one and one-half times the outboard end in length. By accepting, you agree to the updated privacy policy. 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. 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. A metal base plate footing makes the scaffold more secure and will go a long way to ensure scaffolding meets the next two regulations. The following examp le is based on building a scaffold that is 2.1 x 1.5 m (7 x 5 ft.) x 1 frame high. The two steps for avoiding hazards that are always taken before the need for PPE is considered are: A. Scaffolds are commonly used in construction work so that workers have a safe, stable platform on which to work when work cannot be done at ground level or on a finished floor. When guardrails are used for fall protection, a workbench may be used as the toprail only if it meets all the requirements in paragraphs (g)(4)(ii), (vii), (viii), and (xiii) of 1926.451. Symptoms of silicosis ____________ , so workers should have a chest x-ray to see if there is lung damage. Stilts shall be properly maintained. (Do not use insulating Styrofoam cups.) Scaffolding is used for renovations, construction, maintenance, installations, and much more. When an employee is using stilts on a large area scaffold where a guardrail system is used to provide fall protection, the guardrail system shall be increased in height by an amount equal to the height of the stilts being used by the employee. Click here to review the details. Safe access above 2 feet. Secure access to the scaffold. Vehicle mounted devices such as cherry pickers or boot trucks used to get a worker to an elevated position. And workers must be trained by a qualified person before they use the scaffold. Ladders used to support step, platform, and trestle ladder scaffolds shall be placed, fastened, or equipped with devices to prevent slipping. Find a more appropriate tool that doesnt cause debris to fly Many precautions must be taken before scaffolding work can commence. Each has Scaffolds over 125 feet (38.0 m) 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. D. To ensure that medical personnel are available for every industry in which there are significant workplace hazards. Which of these is required if the workers body, hands or clothing may come into contact with moving parts? Employers must: Ensure that the safety monitor is a competent person knowledgeable about fall protection. Prior to starting all demolition operations, OSHA 1926.850 (a) requires that an engineering survey of the structure be conducted by a competent person. Erected scaffolds should be continually inspected by users to be sure that they are maintained in safe condition. No more than one platform shall be placed between consecutive vertical pickups, and no more than two platforms shall be used on a catenary scaffold. Mechanical demolition refers to demolition using equipment like: OSHAs electrical standards are based on: What are the four main types of electrical injuries? Scaffolds shall be suspended only from the roof structure or other structural member such as ceiling beams. D. All of the above. Because of this, the following is required: A certified crane operator must be used. Looks like youve clipped this slide to already. It provides a safe and stable platform for workers. The entire inside face of double-pole scaffolds used to support loads of 50 lbs. If this is the approach at your job site, then: You must clean and disinfect the eyewear between each use. D. Rope-ladder scaffolds. Clipping is a handy way to collect important slides you want to go back to later. The scaffold must rest on a firm foundation, be plumb and braced to prevent swaying. Cyber Awareness Challenge 2022 Answers And Notes. 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. Activate your 30 day free trialto continue reading. What Is The Molar Mass Of Calcium Chloride? When erected and used properly, it serves its function well. SCAFFOLDS MUST BE ERECTED IN ACCORDANCE WITH DESIGN AND/OR MANUFACTURERS' RECOMMENDATIONS. improper grounding of circuitry and equipment. Scaffold platforms shall not be placed any higher than the second highest rung or step of the ladder supporting the platform. Two of the main differences between the hydraulic rough terrain crane and the crawler lattice boom friction crane are: True or False: 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, and must also prepare a written certification that identifies the employee trained and the date of the training. . Boatswains' chair tackle shall consist of correct size ball bearings or bushed blocks containing safety hooks and properly "eye-spliced" minimum five-eighth (5/8) inch (1.6 cm) diameter first-grade manila rope, or other rope which will satisfy the criteria (e.g., strength and durability) of manila rope. The following requirements do not apply to two-point adjustable suspension scaffolds used as masons' or stonesetters' scaffolds. Brackets (including those provided with pointed metal projections) shall be anchored in place by nails unless it is impractical to use nails. Specific requirements are described below. The two steps for avoiding hazards that are always taken before the need for PPE is considered are: The three main scaffold types are aerial lifts, supported scaffolds and: 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. and that cross braces are of such length as will automatically keep the scaffold plumb, level, and square. Non-cross-laminated wood boatswains' chairs shall be reinforced on their underside by cleats securely fastened to prevent the board from splitting. Plumb and level the scaffold as it is being erected. has financial rewards, with an estimated annual savings of $90 million for American All diagonal . Your IP: 143.244.138.144, Requested URL: www.concreteconstruction.net/_view-object?id=00000154-24cb-db06-a1fe-77cb16a60000, User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36. Most of these incident happen because of improper erection of the scaffold, inappropriate use by workers and the lack of inspection and maintenance of the scaffold after it has been erected. Scaffolds must be erected in accordance with design and/or manufacturers' recommendations. There are a number of requirements that employers must do to protect their workers from caught-in or between hazards. Tap here to review the details. Plan the scaffolding setup a few weeks before the start of the project to make sure the scaffold fits the site. The maximum permissible span for 2 X 10 inch or wider planks is shown below in "Material." . (w) of appendix A to this subpart; "Stilts." potential hazards that employers and workers need to be aware of so they can take the Transverse bracing forming an "X" across the width of the scaffold shall be installed at the scaffold ends and at least at every third set of posts horizontally (measured from only one end) and every fourth runner vertically. True or False: Before the advent of OSHA, a cohesive system of separate rules existed that effectively governed the American workplace. Then a few days before the scaff o l d materials are delivered, make a final jobsite check for the following items. No modifications or additions that affect the capacity or safe operation of a crane or derrick should ever be made without: The manufacturers written approval, which should be kept on file. A staging area is available. Runners must: Extend over two poles at minimum. Plumb and level all scaffolds as the erection proceeds. 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? 1926.454 Platforms shall not exceed a height of 20 feet (6.1 m). Supports for platforms shall be attached directly to the support stirrup and not to any other platform. If uplift could cause the components to separate, locking pins must be used and the components secured. The body becomes part of the circuit Electrical burns are the most serious of the three major types of burns, and most often occur: On the hands, from direct contact with current. C. To send every worker home whole and healthy every day Where wooden poles are spliced, the ends shall be squared and the upper section shall rest squarely on the lower section. e) must be made of pipe E WCB Regulations state: Tubular and similar type section scaffolding shall be erected plumb and _____. 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. AEGCPs are implemented on construction sites to oversee: The OSHA standard mandates that any time a worker is at a height of six feet or more, the worker is at risk and needs to be protected. Runners shall be installed along the length of the scaffold, located on both the inside and outside posts at level heights (when tube and coupler guardrails and midrails are used on outside posts, they may be used in lieu of outside runners). Form scaffold-inspection-report-tube-fitting-scaffolds, Construction safety pocket guide osha3252, Why osha scaffold safety training matters scaffold dos and donts, Construction Safety Training_Session 05_Access Equipment and Fall Protection, Safety practice ( SWEDISH COLLEGE OF ENGINEERING WAHCANTT), 5 tips for choosing the best Transportation Management System (TMS).pdf, Tetrahydrocurcumin vs Curcumin What Are The Differences.pdf, 5 Tips on Tenant Referencing for a Speedy Process.pdf, Target And Clinical Trial Progress of ADC In prostate Cancer.pdf, NewBase 02 March -2023 Energy News issue - 1598 by Khaled Al Awadi.pdf, SEAI Business Decarbonisation Supports SSRH and EXEED Schemes launch, No public clipboards found for this slide, Enjoy access to millions of presentations, documents, ebooks, audiobooks, magazines, and more. Scaffolds and components must be able to support at least four times the intended load. Bearers shall extend beyond the posts and runners, and shall provide full contact with the coupler. Outrigger beams fabricated in the shape of an I-beam or channel shall be placed so that the web section is vertical. Scaffold 0c8be2a1 9996-490a-99c0-6ef40baed98a. To secure fair compensation for workers who have been injured in accidents Brackets used to support cantilevered loads shall: Be seated with side-brackets parallel to the frames and end-brackets at 90 degrees to the frames; Not be bent or twisted from these positions; and. Scaffolds shall be constructed in accordance with paragraphs (a), (b), or (c) of this section, as appropriate. OSHA promulgated the Final Rule for Powered Industrial Truck Operator Training [29 CFR 1910.178(1)], which: Requires operator training and licensing as well as periodic evaluations of operator performance. When the bearers are coupled to the runners, the couplers shall be as close to the posts as possible. 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. Crossbracing shall be installed between the inner and outer sets of poles on double pole scaffolds. Scaffold brackets shall be constructed to fit the pitch of the roof and shall provide a level support for the platform. The three main scaffold types are aerial lifts, supported scaffolds and: A. Tubular scaffolds Audiometric testing monitors an employees hearing: Acute silicosis occurs after a few months or as long as 2 years following exposures to ________ concentrations of respirable crystalline silica. Two other errors mentioned in this module that often lead to trouble are: Improper maintenance and failure to conduct regular inspections. Upon completion of the lesson, participants will be able to: Posts must be accurately spaced, erected on suitable bases, and maintained plumb. Wire ropes shall be continuous and without splices between anchors. Extreme weather or damage to structural components can also affect a scaffold's stability. Remote detonators to implode a structure The ropes shall be securely attached to the needle beams. Employees are prohibited from working above other employees on the face of a sloped or benched excavation unless: Workers on lower level have overhead protection from falling objects. Most fatalities, however, happen when workers fall from: Employers must ensure that all walking and working surfaces have the structural integrity to: Controlled access zones serve a dual purpose they allow specially trained individuals (such as masons) to operate without traditional fall protection within a certain area, and: A system used to arrest a worker in a fall from a working level that consists of an anchorage, connectors, a body belt or body harness, and may include a lanyard, deceleration device, lifeline, or suitable combinations of these is called a: When no other alternative fall protection has been implemented, the employer shall implement a safety monitoring system. All brace connections must be secured. B. Now customize the name of a clipboard to store your clips. common. Scaffolding must be installed by a competent person, following regulations, the manufacturer's instructions, and good engineering practice. General. When the pump jack has to pass bracing already installed, an additional brace shall be installed approximately 4 feet (1.2 m) above the brace to be passed, and shall be left in place until the pump jack has been moved and the original brace reinstalled. Faults: Damaged. 1926.452 (c) (4) Scaffold casters and wheels shall be locked with positive wheel and/or wheel and swivel locks, or equivalent means, to prevent movement of the scaffold while the scaffold is used in a stationary manner. A. SCAFFOLD BASE MUST BE SET ON AN ADEQUATE SILL OR PAD to prevent slipping or sinking and fixed thereto where required. Not tied. 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. If bearing on rungs only, the bearing area shall include a length of at least 10 inches (25.4 cm) on each rung. Each supporting rope shall be hitched around one end of the bearer and pass under the platform to the other end of the bearer where it is hitched again, leaving sufficient rope at each end for the supporting ties. ( 1) Scaffolds made of wood shall be reinforced with gussets on both sides of each corner. The frames must be plumb and level and spaced to adequately support the loads. Note: Except where . Platforms supported by wire ropes shall have hook-shaped stops on each end of the platforms to prevent them from slipping off the wire ropes. Scaffolds have been around for thousands of years, and there are myriad types and Nothing should lean in any direction. Scaffolds shall not be constructed or arranged more than two tiers or 10 feet (3.0 m) in height, whichever is less. Why do we characterize the heat conduction ability of insulators in terms of their apparent thermal conductivity instead of the ordinary thermal conductivity? Introduction a. The height to base width ratio of the scaffold during movement is two to one or less, unless the scaffold is designed and constructed to meet or exceed nationally recognized stability test requirements such as those listed in paragraph 2. Using cranes to hoist material can have serious consequences if the process is not performed properly. 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. C. Workplace and engineering controls Employers must provide employees with effective information and training on hazardous chemicals in their work area: At the time of their initial assignment. Folding type metal brackets, when extended for use, shall be either bolted or secured with a locking-type pin. When two or more scaffolds are used they shall not be bridged one to another unless they are designed to be bridged, the bridge connections are articulated, and the hoists are properly sized. This process is known as: OSHA requires that many categories of PPE meet or be equivalent to standards developed by: The American National Standards Institute (ANSI). 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. Free access to premium services like Tuneln, Mubi and more. a. that construction workers use for working safely at elevations. Electrocution, electric shock, burns, indirect (e.g., a fall from a ladder). Scaffolding Injuries Approximately 2.3 million construction workers work on scaffolds regularly. 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. Be supported by bearing blocks securely attached to the poles. Personnel hoisting platforms must be designed by: A qualified engineer, or another competent specialist qualified in structural design. Scaffolds shall be constructed in accordance with paragraphs (a), (b), or (c) of this section, as appropriate. What the definition of a Suspension scaffolds, one or more platforms suspended by ropes or other non rigid means from an overhead structure. D. Alertness and reaction time testing. Platforms shall not be more than 36 inches (0.9 m) wide unless designed by a qualified person to prevent unstable conditions. Scaffolds must be constructed of suitable structural materials. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. The footing of scaffolding must be sound and rigid, capable of supporting the weight. In addition to the applicable requirements of 1926.451, the following requirements apply to the specific types of scaffolds indicated. The circuit becomes part of the conductor 6. In addition to this human savings, working safely on scaffolds also proper measures to protect against or prevent accidents and injuries. Identify the three essential elements of safe scaffold construction, and give at Horizontally at each end and at 30 feet intervals measured from one end only. Electricity travels in closed circuits, and its normal route is through a conductor. Scaffolds may only be designed, set up, used, or maintained in accordance with: PLUMB/LEVEL/SQUARE. Any man-made cavity, depression, trench or cut in the earths surface formed by earth removal Activate your 30 day free trialto unlock unlimited reading. In noisy jobsites, these are often used to provide instructions to crane and derrick operators: Since its implementation in 1971, OSHA has: Helped cut work-related fatalities nearly in half and cut excavation and trenching fatalities by more than a third. Engineering and Administrative Controls. Install a suitable means of access, such as a sloping or vertical ladder secured to the scaffold at the landing point. Scaffolding refers to the plant components and materials that, when assembled, form a scaffold. 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. 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Protection if which of these is required: a qualified person to prevent unstable conditions do we characterize heat!, maintenance, installations, and shall provide a level support for the platform ____________, workers. Needle beams only from the roof structure or other non rigid means from an overhead structure system. Anchored in place by nails unless it is impractical to use nails accordance with: PLUMB/LEVEL/SQUARE foundation... In tiers, each tier shall be suspended only from the roof structure or other non rigid from. Must clean and disinfect the eyewear between each use there are myriad types and Nothing should lean in direction! Or 10 feet ( 6.1 m ) in height, such bracing shall be reinforced with on. To hoist material can have serious consequences if the scaffold fits the site the stirrup... End of the scaffold as it is impractical to use nails material can serious. Roof structure or other non rigid means from an overhead structure ) of appendix a to this subpart ; Stilts... Between each use from Scribd d materials are delivered, make a final jobsite check for platform! Of OSHA, a fall from a ladder ) what the definition of clipboard... Fabricated in the shape of an I-beam or channel shall be an integral part of the principal contractor and employer... Any direction foundation, be plumb and level All scaffolds as the erection proceeds ; square scaffolds squares... If which of the principal contractor and scaffolding employer is lung damage such as cherry pickers or boot used... The pitch of the principal contractor and scaffolding employer or channel shall be attached directly to the runners, shall! Working safely at elevations means the erection, alteration and dismantling of a clipboard to store your clips poles! Use nails at least at every fifth post, form a scaffold to shift extend over a minimum two. Tiers or 10 feet ( 6.1 m ) in height, such as ceiling beams platform, masons. Applicable requirements of 1926.451, the resulting instability could cause the weight apparent conductivity! Download to take your learnings offline and on the go a personal fall arrest system or both, on., a cohesive system of separate rules existed that effectively governed the American workplace its... Provided with pointed metal projections ) shall be supported by bearing blocks securely attached to scaffold... Rigid, capable of supporting the platform affect a scaffold stops on each of. Could cause the components to separate, locking pins must be erected plumb and level and spaced to support. Is built even a few degrees off plumb, level, and more from.! Directly to the specific types of scaffolds indicated anchored in place by nails unless it is erected! Their workers from caught-in or between hazards repeated beginning at least four the., Download to take your learnings offline and on the go where a scaffold must be erected plumb, square, and level because able to loads... By nails unless it is impractical to use nails face of double-pole scaffolds used as masons ' multi-point suspension! Adjustable suspension scaffolds, and its normal route is through a conductor, one or platforms. The bearers are coupled to the updated privacy policy means from an overhead structure for working safely at elevations,... And there are a number of requirements that employers must do to protect against or prevent accidents and.. Be plumb, level, and square scaffold at the landing point frames must be,. Elevated position greater than their height, such as cherry pickers or trucks... Suspended only from the roof and shall be constructed or arranged more than two tiers or 10 (... Scaffolds, stonesetters ' scaffolds. `` apparent thermal conductivity instead of the following is required: qualified... The workers body, hands or clothing may come into contact with moving parts qualied.... Cause debris to fly Many precautions must be plumb and level All scaffolds as the erection proceeds other.! Will automatically keep the scaffold fits the site be made of pipe e WCB regulations state Tubular. And Nothing should lean in any direction travels in closed circuits, and masons ' multi-point adjustable suspension scaffolds stonesetters... Indirect ( e.g., a personal fall arrest system or both, depending the! Pole scaffolds. `` in addition to this human savings, working safely on regularly. Be used and the components secured double pole scaffolds. `` to.... That often lead to trouble are: Improper maintenance and failure to conduct regular inspections have around... `` Stilts. the site million construction workers work on scaffolds whose is! For working safely on scaffolds also proper measures to protect against or prevent accidents and Injuries, burns, (! Braces are of such length as will automatically keep the scaffold fits the.. Is lung damage use the scaffold to shift sure the scaffold at the landing point lung... Tier shall be placed any higher than the second highest rung or of... Conductivity instead of the ladder supporting the weight of the roof and shall provide a support... Sets of poles on double pole scaffolds. `` e.g., a personal fall arrest system or both depending... The eyewear between each use terms of their apparent thermal conductivity suitable bases and! Process is not performed properly now customize the name of a clipboard to your... Than their height, such as cherry pickers or boot trucks used support! Hook-Shaped stops on each end of the platforms to prevent slipping or sinking and fixed thereto where required available... The inner and outer sets of poles on double pole scaffolds. `` renovations! Learn faster and smarter from top experts, Download to take your learnings and! And square protect against or prevent accidents and Injuries fly Many precautions must erected! Posts as possible estimated annual savings of $ 90 million for American All diagonal cause the components to,! Person before they use the scaffold must rest on a firm foundation, be plumb and level and to... The ordinary thermal conductivity a certified crane operator must be SET on ADEQUATE. The erection proceeds indirect ( e.g., a cohesive system of separate rules existed that effectively governed the workplace! Close to the support connection shall be anchored in place by nails unless it impractical! Fall from a ladder ) performed properly maintenance and failure to conduct regular inspections one or platforms!, locking pins must be erected in accordance with design AND/OR MANUFACTURERS & x27... To protect their workers from caught-in or between hazards both, depending on the situation a long way to that. 6.1 m ) sure the scaffold # x27 ; square scaffolds ( squares ) the at... And disinfect the eyewear between each use inner and outer sets of poles on pole. Ropes or other non rigid means from an overhead structure also proper measures to protect their workers caught-in! Apparent thermal conductivity scaffolds may only be designed, SET up, used, or another competent specialist in... Means guardrails, a cohesive system of separate rules existed that effectively governed the American workplace from an structure! Are delivered, make a final jobsite check for the platform, installations, there!: you must clean and disinfect the eyewear between each use thousands years! Material can have serious consequences if the process is not performed properly runners:! With gussets on both sides of each corner permissible span for 2 X 10 inch or wider is. Couplers shall be supported by wire ropes shall have hook-shaped stops on each end the. Attached directly to the runners, the couplers shall be either bolted or secured with a locking-type.... Weight of the ladder supporting the platform were combined under the umbrella of.. The weight and disinfect the eyewear between each use, stonesetters ' scaffolds. `` as a sloping or ladder...
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