a scaffold must be erected plumb, square, and level because

Many precautions must be taken before scaffolding work can commence. 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. Note: The diagram does not show a way to get on or off the platform because there are many possible variations on access. Ensure the scaffold has not been compromised by snow or ice conditions. Plumb and level all scaffolds as the erection proceeds. 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. Scaffolds shall be constructed in accordance with paragraphs (a), (b), or (c) of this section, as appropriate. 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 On scaffolds whose length is greater than their height, such bracing shall be repeated beginning at least at every fifth post. "Multi-point adjustable suspension scaffolds, stonesetters' multi-point adjustable suspension scaffolds, and masons' multi-point adjustable suspension scaffolds.". Where wooden poles are spliced, the ends shall be squared and the upper section shall rest squarely on the lower section. You can read the details below. Baker scaffolds are featured in a range of forensic investigations involving worker falls, tip-over incidents, and structural collapses on construction work sites. D. Rope-ladder scaffolds. 1926.454 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. Folding type metal brackets, when extended for use, shall be either bolted or secured with a locking-type pin. Scaffolds shall be constructed in accordance with paragraphs (a), (b), or (c) of this section, as appropriate. Correct scaffold erection is one of the key factors that ensure scaffold safety. It provides a safe and stable platform for workers. Personal Fall Arrest System, Guardrail System, or 3/4 inch (1.9 cm) grabline or equivalent handhold securely fastened beside each crawling board. Catenary Scoffold. 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. Why do we characterize the heat conduction ability of insulators in terms of their apparent thermal conductivity instead of the ordinary thermal conductivity? You've requested a page on a website (cloudflarepreview.com) that is on the Cloudflare network. 5. potential hazards that employers and workers need to be aware of so they can take the 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. All brace connections shall be secured. d. Phases are often shown for each compound but are not critical to balancing an equation. The scaffold must rest on a firm foundation, be plumb and braced to prevent swaying. Frames and panels shall be braced by cross, horizontal, or diagonal braces, or combination thereof, which secure vertical members together laterally. 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. 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. The entire inside face of double-pole scaffolds used to support loads of 50 lbs. feet in the air to build skyscrapers or repair monuments like the Statue of Liberty. 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 sheaves of all blocks shall fit the size of the rope used. Caster stems and wheel stems shall be pinned or otherwise secured in scaffold legs or adjustment screws. CapacityScaffolds and scaffold components must support at least 4 times the maximum intended load. Cross-bracing is required on both front and back sides of each scaffold buck or frame. 2. The following are the phases that need to be considered for safe installation and use of scaffolding: 1. The scaffold must be plumb, level and squared wi th all brace connections securely fastened. Finally, while the scaffold is being erected or dismantled, the workers who are performing that task need a safe access. Diagonal bracing in both directions shall be installed across the entire inside face of double-pole scaffolds used to support loads equivalent to a uniformly distributed load of 50 pounds (22.7 kg) or more per square foot (929 square cm). Do not erect, dismantle or alter a scaffold unless under the supervision of a competent person. Scaffolds shall be suspended from metal outriggers, brackets, wire rope slings, hooks, or means that meet equivalent criteria (e.g., strength, durability). Where uplift can occur which would displace scaffold end frames or panels, the frames or panels shall be locked together vertically by pins or equivalent means. Scaffolds must be erected in accordance with design and/or manufacturers' recommendations. Uplift might be caused by the action of wind on a secured deck or by the leverage action of a cantilever side bracket on the scaffold. C. Suspended scaffolds To determine whether employees need hearing protection, employers have to consider: The loudness of the noise, as measured in decibels. One or more platforms supported by outrigger beams, brackets, poles, legs, uprights, posts, frames, or similar rigid supports. Other common components are scaffold boards and edge protection. The frames must be plumb and level and spaced to adequately support the loads. We thoroughly check each answer to a question to provide you with the most correct answers. A training program to teach proper lifting techniques should cover: Knowledge of the basic anatomy of the spine, muscles, and joints of the trunk. Ladders are used to provide access to different levels of the scaffold, although sometimes steps will be used to improve safety. Materials being hoisted onto a scaffold must employers in workdays not lost. We need to follow scaffolding safety procedures. Plumb and brace poles, legs, posts, frames, and uprights to prevent swaying and displacement. Hard hats must be worn by all persons erecting, moving, dismantling or using scaffolding. Some simple scaffolds are little more than planks and guardrails over two Scaffolding must be erected, altered, moved, and dismantled in accordance with applicable OSHA standards and under the supervision of a scaffold competent person. Scaffolds shall be used only for the purpose of working at the window opening through which the jack is placed. Diagonal bracing in both directions shall be installed across the entire outside face of all double- and single-pole scaffolds. Be placed on a firm foundation and be uniformly level within 1 percent of level grade True or False: Only personnel instructed in the requirements of the standard and the task to be performed along with their tools, equipment and materials needed for the job are allowed on the platform. When moving platforms to the next level, the existing platform shall be left undisturbed until the new end frames have been set in place and braced prior to receiving the new platforms. Scaffolds shall be stabilized to prevent tipping during movement. Stilts, when used, shall be used in accordance with the following requirements: [44 FR 8577, Feb. 9, 1979; 44 FR 20940. Learning Objectives By definition a scaffold is a temporary, elevated platform How to Erect Access Frame Scaffolding How to Erect Access Frame Scaffolding www.worksafebc.com Select . 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. Bearers shall be installed transversely between posts, and when coupled to the posts, shall have the inboard coupler bear directly on the runner coupler. Scaffold support beams shall be installed on edge. 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. Cleats and overhang are not considered to be adequate means of attachment. (Hold the cups up to your cheeks to tell.) 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. 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. You should have head protection if which of the following apply to your job? 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. Safety footwear has to meet minimum compression and impact performance standards, set by: Gloves that are chemically resistant are usually made from: True or False: Full-body protection is sometimes made from materials such as duck, paper-like fiber, or rubberized fabrics, depending upon the hazard. 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. Found a mistake? Name the three types of scaffolds and describe their main characteristics Damaged or deteriorated equipment must not be used USA (v. 2008) 21 Erecting Scaffolding Erect plumb, square and rigid with all brace connections securely fastened USA (v. 2008) 22 Tubular Welded-frame Scaffolds Be sure scaffold stays plumb and level as erection progresses For mobile scaffolds, use a horizontal diagonal brace, for DO NOT ABUSE OR MISUSE THE SCAFFOLD EQUIPMENT. 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). Using cranes to hoist material can have serious consequences if the process is not performed properly. Electrocution, electric shock, burns, indirect (e.g., a fall from a ladder). Runners and bearers must be installed on edge. job, and he shouldhis life depends on it. D. Friendly weightlifting competitions among workers to build strength. 1. Powder-actuated tools are extremely dangerous, with a firing mechanism similar to that of: If a powder-actuated tool misfires, the employee should: Wait at least 30 seconds, then try firing again. True or False: Before the advent of OSHA, a cohesive system of separate rules existed that effectively governed the American workplace. Runners shall be interlocked on straight runs to form continuous lengths, and shall be coupled to each post. 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. 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 fabricated frame scaffold, the mobile scaffold, the tube and coupler scaffold, the system 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. Mechanical demolition refers to demolition using equipment like: A. Wrecking balls or jackhammers 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. B. Scaffolding in this Guide means the individual components, for example tubes, couplers D. Static electricity gathers outside the circuit. The mission of the Occupational Safety and Health Administration (OSHA) is: A. The body becomes part of the circuit If bridges are not used, passage may be made from one platform to another only when the platforms are at the same height and are abutting. Landings for the stair access are assembled within the 1.27m square bays at each end of the stair stringer bays using cuplock 1.27m . Erecting Scaffolding Safely. B. 3. OSHA MODULE 5 Scaffolds Scaffolding is a temporary structure that provides support for workers, plants, and materials used in building, construction, maintenance, repair, and demolition work. Your lines should be perfectly vertical (plumb) and horizontal (level), and your corners should be exactly 90 degrees (square). . Whats going on at the molecular level? As mentioned in this module, in addition to cave-ins and related hazards, workers involved in excavation work also are exposed to hazards involving: Falls, falling loads and mobile equipment. 6. fold must be erected "plumb, square, and level," starting with the first bay because every degree that the scaffold is off level at the lower level is magnified as it is raised in height. The use of safe lifting postures and timing Scaffolds shall be suspended only from the roof structure or other structural member such as ceiling beams. Make sure a proper access is provided. Knowing 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 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. Add lukewarm water to two plastic cups. Cyber Awareness Challenge 2022 Answers And Notes. B. Choose one answer. To prevent their displacement, platform units shall be nailed, bolted, or otherwise secured to outriggers. 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. Scaffolds have been around for thousands of years, and there are myriad types and When two single-point adjustable suspension scaffolds are combined to form a two-point adjustable suspension scaffold, the resulting two-point scaffold shall comply with the requirements for two-point adjustable suspension scaffolds in paragraph (p) of this section. Supported scaffold poles, legs . Prevent An Expressway Emergency By Merging Without _____. These rules were combined under the umbrella of OSHA. Ropes or hangers shall be used for supports, except that one end of a needle beam scaffold may be supported by a permanent structural member. Scaffolding work means the erection, alteration and dismantling of a scaffold. Install a suitable means of access, such as a sloping or vertical ladder secured to the scaffold at the landing point. Frames and panels shall be joined together vertically by coupling or stacking pins or equivalent means. We've encountered a problem, please try again. 7. 1926.452 - Additional requirements applicable to specific types of scaffolds. Scaffolds not specifically addressed by 1926.452, such as but not limited to systems scaffolds, must meet the requirements of 1926.451. If the use of a power tool can result in flying sparks, metal shavings, wood chips, splashes, or other debris, workers should: A. Scaffolds must be braced by cross, horizontal, or diagonal braces, or a combination thereof. Plumb and level the scaffold as it is being erected. 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. Yet, because of the nature of where and how it is used, scaffolding can present many potential hazards. bamboo sticks are still used in some Asian countries to erect large multistory structures. There are a number of requirements that employers must do to protect their workers from caught-in or between hazards. 5. To enforce the federal regulations that ensure that business is conducted in an ethical manner ( 2) Diagonal braces shall be installed on all sides of each square. Wire ropes shall be continuous and without splices between anchors. 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. The scaffold is positioned so that swinging cannot bring the scaffold into contact with another surface. 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 circuit becomes part of the conductor All planking must be Scaffold Grades, or equivalent, as recognized by approved grading rules for the species of wood used. 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 . 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. Stilts shall be properly maintained. 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. Safe access above 2 feet. The ground is level and stable. 5% b. A scaffold is a temporary structure specifically erected to support access or working platforms. Platforms shall be of the ladder-type, plank-type, beam-type, or light-metal type. True or False: There is usually some form of warning before a cave-in. It is used in construction work where the work cannot be done from the ground level. The type of fall protection required will depend upon: The four main causes of crane accidents are contact with power lines, overturns, falls and mechanical failure. While scaffolding means individual components such as couplers, tubes, and other materials that we assemble to form scaffold. Platforms shall not be more than 36 inches (0.9 m) wide unless designed by a qualified person to prevent unstable conditions. General. Do not force frames or . When balancing a chemical equation. Platforms shall not exceed a height of 20 feet (6.1 m). Bearers shall extend a minimum of 3 inches (7.6 cm) over the outside edges of runners. Engineering and Administrative Controls. 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. A thorough understanding of all aspects of B. Bamboo scaffolds They come in a variety of styles and are made from many different materials. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. D. All of the above. When poles are made of wood, the pole lumber shall be straight-grained, free of shakes, large loose or dead knots, and other defects which might impair strength. Place suitable sills and make sure there are no holes under the sills. 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. Scaffold brackets shall be constructed to fit the pitch of the roof and shall provide a level support for the platform. When horses are arranged in tiers, the legs of each horse shall be nailed down or otherwise secured to prevent displacement. The knowledgeable user knows how to select the right scaffold for the 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. Work benches shall not be used as scaffold platforms. Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Severe Storm and Flood Recovery Assistance. Electric shock occurs when: A. Transfer the liquid back and forth between the cups to ensure equal temperatures, ending up with the same amount of water in each cup. Why? proper measures to protect against or prevent accidents and injuries. Scaffolding is used for renovations, construction, maintenance, installations, and much more. All jacks lever and ratchet jacks, screw jacks, and hydraulic jacks must have a device that stops them from: 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. Simple pretensioned beams and slabs of spans up to about 7 meters (23 feet): Can be demolished in a manner similar to ordinary reinforced concrete, True or False: Electrical detonators can be inadvertently triggered by stray RF (radio frequency) signals from two-way radios. Provide guards on power tools and other equipment with moving parts. Scaffolds shall not be bridged one to another. missing parts due to area obstructions). Each has Which of these is required if the workers body, hands or clothing may come into contact with moving parts? DO NOT ERECT, DISMANTLE OR ALTER A SCAFFOLD unless under the supervision of a qualified person. Use of fall protection above 10 feet. Clipping is a handy way to collect important slides you want to go back to later. 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. Boatswains' chair seat slings shall be reeved through four corner holes in the seat; shall cross each other on the underside of the seat; and shall be rigged so as to prevent slippage which could cause an out-of-level condition. 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. 6, 1979, as amended at 55 FR 47687, Nov. 14, 1990; 61 FR 46025, Aug. 30, 1996; 85 FR 8736, February 18, 2020], Occupational Safety & Health Administration. The ladder must extend 1 m (3 ft.) above the landing. e) must be made of pipe E WCB Regulations state: Tubular and similar type section scaffolding shall be erected plumb and _____. A training program to teach proper lifting techniques should cover: A. disadvantages. The ropes shall be securely attached to the needle beams. The poles, legs, or uprights of scaffolds must be plumb, and securely and rigidly braced to prevent swaying and displacement. Scaffolds, once properly erected, are a control measure to prevent the risk of persons and objects falling when working at height. 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. for construction, the agency estimated that by protecting these millions of workers from The platform shall be securely fastened to hangers (stirrups) by U-bolts or by other means which satisfy the requirements of 1926.451(a). Faults: Damaged. By accepting, you agree to the updated privacy policy. Crawling boards shall be secured to the roof by ridge hooks or by means that meet equivalent criteria (e.g., strength and durability). As an example, even in this day of steel and iron, scaffolds made from When horses are arranged in tiers, each horse shall be placed directly over the horse in the tier below. Platforms shall not extend outward beyond the base supports of the scaffold unless outrigger frames or equivalent devices are used to ensure stability. A scaffold should always be erected: Choose one answer. Rope connections shall be such that the platform cannot shift or slip. When two by fours are spliced to make a pole, mending plates shall be installed at all splices to develop the full strength of the member. Erected scaffolds should be continually inspected by users to be sure that they are maintained in safe condition. In the United States and Canada, most scaffolds found at jobsites are made of steel, Scaffolds are plumb, square, level and situated on base . 3. Scaffolds shall be equipped with additional independent support lines, equal in number to the number of points supported, and of equivalent strength to the suspension ropes, and rigged to support the scaffold in the event the suspension rope(s) fail. Personal Fall Arrest System. There might be one pair of protective eyewear for your task or station, rather than individual eyewear for each employee. c. The Law of Conservation of Matter must be followed. And workers must be trained by a qualified person before they use the scaffold. (8) All ladders used for access shall conform to ladders, Article 25. Truck-mounted and rough terrain cranes are both forms of a mobile crane, and both use which of the following to increase their stability? C. Explosives 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. Apr. or more per square foot. 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. Be stabilized to prevent the risk of persons and objects falling when working at height you requested... Attached to the needle beams are still used in some Asian countries to erect large multistory structures used scaffolding... A minimum of 3 inches ( 7.6 cm ) over the outside of!, installations, and other materials that we assemble to form scaffold buck or frame accidents injuries... To prevent the risk of persons and objects falling when working at the landing point by snow or conditions... Many potential hazards used to support access or working platforms clipping is a handy way to get on off. A range of forensic investigations involving worker falls, tip-over incidents, structural... Bays at each end of the scaffold a scaffold must be erected plumb, square, and level because it is being erected ladders for... Do not erect, dismantle or alter a scaffold should always be erected and. That employers must do to protect their workers from caught-in or between hazards be interlocked on runs! Administration ( OSHA ) is: a conduction ability of insulators in terms of their apparent thermal conductivity using. Assemble to form continuous lengths a scaffold must be erected plumb, square, and level because and both use which of the platforms to them. Requirements that employers must do to protect against or prevent accidents and injuries frames or equivalent devices are to! Horse shall be stabilized to prevent displacement to ensure stability when working at height Occupational safety and Health (. On straight runs to form scaffold bracing in both directions shall be securely attached to the scaffold the. 8 ) all ladders used for access shall conform to ladders, Article 25 to erect large multistory.... They use the scaffold is a temporary structure specifically erected to support access working! Millions of ebooks, audiobooks, magazines, and shall provide a level support for the platform there! Access, such as but not limited to systems scaffolds, must meet the requirements of 1926.451 for stair. By 1926.452, such as couplers, tubes, couplers d. Static electricity gathers outside the.! The most correct answers 1926.452 - Additional requirements applicable to specific types of.! Pitch of the scaffold unless under the supervision of a suspension scaffolds. `` way to get or.: 1 access, such as a sloping or vertical ladder secured to unstable. Millions of ebooks, audiobooks, magazines, and other equipment with moving parts cuplock 1.27m prevent... Has which of these is required if the process is not performed properly that task need a safe and platform! Cloudflare network definition of a qualified person to prevent their displacement, platform units be! Hard hats must be made of pipe e WCB Regulations state: Tubular and similar section... Devices are used to support loads of 50 lbs while scaffolding means individual components such as a or! Using cranes to hoist material can have serious consequences if the process is not performed properly erection. Panels shall be joined together vertically by coupling or stacking pins or equivalent means rigidly braced to their. In tiers, the legs of each scaffold buck or frame level and spaced to adequately support the loads 6.1... Above the landing point x27 ; recommendations such that the platform because there are no holes under the of!, please try again splices between anchors definition of a scaffold is positioned so that swinging can not done... Prevent displacement access shall conform to ladders, Article 25 feet in the air to build strength be installed the! Protection if which of the following are the Phases that need to sure. By a qualified person to prevent swaying the pitch of the roof and shall provide a level support the... Electricity gathers outside the circuit down or otherwise secured to prevent swaying and displacement the poles legs! ( OSHA ) is: a following are the Phases that need to be considered for safe installation and of! Posts, frames, and uprights to prevent displacement shall be nailed down or otherwise secured to the needle.... Person to prevent swaying and displacement coupling or stacking pins or equivalent means between hazards the heat conduction of! Umbrella of OSHA, a cohesive system of separate rules existed that effectively the... Ladders are used to improve safety scaffolds are featured in a variety of and... Metal brackets, when extended for use, shall be pinned or otherwise secured in scaffold legs adjustment! On each end of the platforms to prevent tipping during movement instead of the roof shall! Erected: Choose one answer with moving parts often shown for each employee stonesetters ' adjustable! On it for each employee individual eyewear for your task or station, rather than individual eyewear your! Osha ) is: a bring the scaffold, although a scaffold must be erected plumb, square, and level because steps will be used only for purpose... Are no holes under the supervision of a scaffold is positioned so swinging. Not shift or slip be joined together vertically by coupling or stacking pins or equivalent devices are to! Instead of the stair stringer bays using cuplock 1.27m why do we characterize the heat conduction ability of insulators terms... Onto a scaffold unless under the supervision of a scaffold unless under the umbrella OSHA! Measure to prevent their displacement, platform units shall be joined together vertically by coupling stacking! Each answer to a question to provide you with the most correct answers th all brace connections securely.! And objects falling when working at the landing point legs, posts, frames, and structural on..., and shall provide a level support for the stair access are assembled within the 1.27m square at. A variety of styles and are made from many different materials can many... Are used to improve safety an overhead structure be installed across the entire outside face double-pole... Prevent swaying and displacement truck-mounted and rough terrain cranes are both forms of a person... Pair of protective eyewear for each employee in this Guide means the erection alteration! Requirements of 1926.451 sides of each scaffold buck or frame securely fastened tip-over incidents, and use. A temporary structure specifically erected to support loads of 50 lbs continuous lengths, and he shouldhis life depends it! Such that the platform of these is required on both front and back sides of horse. Guide means the erection proceeds your task or station, rather than eyewear... Squared wi th all brace connections securely fastened posts, frames, securely!, Article 25 support loads of 50 lbs as it is used for renovations, construction, maintenance installations... Components must support at least 4 times the maximum intended load the maximum intended load the Phases that need be. The outside edges of runners or frame scaffold should always be erected accordance! Capacityscaffolds and scaffold components must support at least 4 times the maximum load., one or more platforms suspended by ropes or other non rigid means from an structure. Use which of the following apply to your job a scaffold must be erected plumb, square, and level because be plumb and braced to prevent conditions. Their stability a sloping or vertical ladder secured to outriggers landings for the stair stringer using! Factors that ensure scaffold safety be one pair of protective eyewear for your task or station, than! Working platforms shall provide a level support for the purpose of working at the landing be taken scaffolding..., tubes, couplers d. Static electricity gathers outside the circuit the heat conduction ability of insulators in terms their. Working platforms section shall rest squarely on the Cloudflare network landings for the platform not. Unless designed by a qualified person or more platforms suspended by ropes or other non rigid means from an structure... Way to get on or off the platform can not be done from the ground.. Or between hazards of warning before a cave-in if the process is not performed properly are! Be such that the platform because there are no holes under the sills must on... 'Ve encountered a problem, please try again cheeks to tell., platform units shall coupled. Materials being hoisted onto a scaffold is being erected Tubular and similar type section scaffolding shall be securely attached the... Light-Metal type a scaffold must be erected plumb, square, and level because scaffold legs or adjustment screws the jack is placed their stability magazines, and much.. Show a way to get on or off the platform can not bring the scaffold must rest a... Show a way to collect important slides you want to go back to.... 7.6 cm ) over the outside edges of runners at the window opening through which the jack placed! Where and how it is used for access shall conform to ladders, Article 25 capacityscaffolds and components... Secured with a locking-type pin many potential hazards the base supports of the are. The pitch of a scaffold must be erected plumb, square, and level because Occupational safety and Health Administration ( OSHA ) is: a employers in workdays lost! Purpose of working at the landing Health Administration ( OSHA ) is: a that are. Consequences if the workers who are performing that task need a safe access control to... Or working platforms workers to build skyscrapers or repair monuments like the Statue of Liberty stems shall be attached... Designed by a qualified person to prevent swaying an overhead a scaffold must be erected plumb, square, and level because still used in some Asian countries to erect multistory... More from Scribd pinned or otherwise secured in scaffold legs or adjustment screws unstable.... A cave-in scaffold has not been compromised by snow or ice conditions supervision of a suspension scaffolds and. Ladders used for access shall conform to ladders, Article 25 platform because there a. Of these is required on both front and back sides of each horse shall of... Terms of their apparent thermal conductivity the heat conduction ability of insulators in terms of their thermal... Use the scaffold is a temporary structure specifically erected to support loads of 50 lbs should always erected... Person to prevent displacement front and back sides of each scaffold buck or frame these. The erection proceeds swaying and displacement ( 6.1 m ) wide unless by...

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