Always use . The scaffold must be erected on adequate soleplates and the foundation on which the soleplates are placed must have the sufficient bearing capacity to support the imposed loads transferred from the scaffold. For example, if lumber is used, it must be construction grade or Number 1 Grade spruce. 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. Scaffold erection shall progress in only one direction around any structure. When horses are arranged in tiers, each horse shall be placed directly over the horse in the tier below. Scaffolds are fabricated from many materialssome common, and others not so fabricated frame scaffold, the mobile scaffold, the tube and coupler scaffold, the system a. Ladders are used to provide access to different levels of the scaffold, although sometimes steps will be used to improve safety. Which of the following is an element of a hearing conservation program? ", "Form scaffolds and carpenters' bracket scaffolds. Fixed Scaffolding Erection Scaffold must be erected, moved, or disassembled only by and under the supervision of qualied persons. Couplers shall be of a structural metal, such as drop-forged steel, malleable iron, or structural grade aluminum. The employer shall ensure that materials shall not be dropped to the outside of the supporting structure. 1926.451(a)(1) and (3) TrainingEmployers must train each employee who works on a scaffold on the hazards and the procedures to control the hazards. Outrigger beams shall be secured in place against movement, and shall be securely braced at the fulcrum point against tipping. Screw jacks must be used to level scaffolding on uneven surfaces with a maximum extension for a screw jack of 12 inches. The following are the phases that need to be considered for safe installation and use of scaffolding: 1. 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). Clipping is a handy way to collect important slides you want to go back to later. Folding type metal brackets, when extended for use, shall be either bolted or secured with a locking-type pin. These hooks shall be so placed that they will prevent the platform from falling if one of the horizontal wire ropes breaks. A scaffold is a temporary structure specifically erected to support access or working platforms. 5. Pump jack brackets, braces, and accessories shall be fabricated from metal plates and angles. Scaffolds have been around for thousands of years, and there are myriad types and 3. Boatswains' chair seat slings shall be a minimum of five-eight (5/8) inch (1.6 cm) diameter fiber, synthetic, or other rope which will satisfy the criteria (e.g., strength, slip resistance, durability, etc.) All brace connections shall be secured. 1926.452 - Additional requirements applicable to specific types of scaffolds. Supports for platforms shall be attached directly to the support stirrup and not to any other platform. Save my name, email, and website in this browser for the next time I comment. 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. and that cross braces are of such length as will automatically keep the scaffold plumb, level, and square. Hardware should be included to fasten the planks into place. 10. feet in the air to build skyscrapers or repair monuments like the Statue of Liberty. 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 _____. Upon completion of the lesson, participants will be able to: 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. scaffold falls, 4,500 injuries and 50 deaths from scaffold-related accidents would be C. Workplace and engineering controls d. Phases are often shown for each compound but are not critical to balancing an equation. (Do not use insulating Styrofoam cups.) 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. True or False: There is usually some form of warning before a cave-in. scaffold are exposed, and describe at least one method of hazard prevention for A scaffold must be erected "plumb, square, and level," because: Answer: If a scaffold is built even a few degrees off plumb, the resulting instability could cause the weight of the scaffold to shift, potentially causing the overloading of one leg and the eventual collapse of the scaffold 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. Because of this, the following is required: A certified crane operator must be used. or more per square foot. D. Friendly weightlifting competitions among workers to build strength. 15% c. 20% d. 25% Materials being hoisted onto a scaffold must The entire inside face of double-pole scaffolds used to support loads of 50 lbs. Platform units shall be securely attached to the needle beams by bolts or equivalent means. What happens to the temperature of the water relative to that of the untreated water? Many precautions must be taken before scaffolding work can commence. What Is The Molar Mass Of Calcium Chloride? 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. Scaffolding means a convenient platform for persons to work at height. Where wooden poles are spliced, the ends shall be squared and the upper section shall rest squarely on the lower section. what to do and when to do it can save lives. B. Now customize the name of a clipboard to store your clips. Place the planks. Scaffolding by UWM 1. 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. Employees shall not be allowed to ride on scaffolds unless the following conditions exist: The surface on which the scaffold is being moved is within 3 degrees of level, and free of pits, holes, and obstructions; Outrigger frames, when used, are installed on both sides of the scaffold; When power systems are used, the propelling force is applied directly to the wheels, and does not produce a speed in excess of 1 foot per second (.3 mps); and. D. To ensure that medical personnel are available for every industry in which there are significant workplace hazards. Extreme weather or damage to structural components can also affect a scaffold's stability. D. Rope-ladder scaffolds. By accepting, you agree to the updated privacy policy. If a machine has an exposed pulley and conveyor but the portion of it that is exposed is well underneath the machine, the employer: Must ensure all exposed and accessible sections of the machine are guarded. OSHA 10-Hour Construction Course: Module 5 Scaffolds Page 1 of 22 This means that whatever you're working on won't be tilted or sloped in any way. C. To send every worker home whole and healthy every day Cyber Awareness Challenge 2022 Answers And Notes. A scaffold must be erected "plumb, square, and level," starting with the first bay of the scaffold, because every degree that the scaffold is off level will be magnified as the scaffold is raised in height. In addition to this human savings, working safely on scaffolds also All brace connections shall be secured. On scaffolds whose length is greater than their height, such bracing shall be repeated beginning at least at every fifth post. Plumb and level all scaffolds as the erection proceeds. D. All of the above. Just a few example you can find fast on the interwebs, NFI . Never sit on, lean against, or step on a skylight lens or any covering placed over a hole in a roof or floor 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. Before a scaffold is moved, each employee on the scaffold shall be made aware of the move. Posts must be accurately spaced, erected on suitable bases, and maintained in plumb. Caster stems and wheel stems shall be pinned or otherwise secured in scaffold legs or adjustment screws. . 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. 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. What the percentage of the construction industry that work on scaffold, Most scaffolds at jobsites are made of what type of material, What are the most frequently used types of scaffolds, The first step in building a scaffold includes a site inspection to do identify what. each of the hazards. D. Stop using the tool, A. We thoroughly check each answer to a question to provide you with the most correct answers. Scaffold planks should extend over their end supports not less than 6 inches nor more than 18 inches. Every element of your orientation must be exact. 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. Choose one answer. 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. Transfer the liquid back and forth between the cups to ensure equal temperatures, ending up with the same amount of water in each cup. Nothing should lean in any direction. 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. In 1996, when OSHA issued the revised Scaffold Standard 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 Independent support lines and suspension ropes shall not be attached to the same points of anchorage. Surfaces on which stilts are used shall be flat and free of pits, holes and obstructions, such as debris, as well as other tripping and falling hazards. constructing, using, and dismantling a scaffold is vital to protecting workers. work on scaffolds frequently. 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. To determine whether employees need hearing protection, employers have to consider: The loudness of the noise, as measured in decibels. Cross-bracing is required on both front and back sides of each scaffold buck or frame. The critical first step in developing a comprehensive safety and health program is to identify physical and health hazards at a work site. When wood poles are constructed of two continuous lengths, they shall be joined together with the seam parallel to the bracket. Plumb and level the scaffold as it is being erected. Review the foundation. To prevent their displacement, platform units shall be nailed, bolted, or otherwise secured to outriggers. Remote detonators to implode a structure Scaffolds must be erected, dismantled, or moved only by properly trained workers. Free access to premium services like Tuneln, Mubi and more. Splice plates of other materials of equivalent strength may be used. 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. Movement of the scaffold must be under the direction of a competent person. The erection and dismantling of the scaffolds must be done based on the instructions set out in the design drawings. What the definition of a Suspension scaffolds, one or more platforms suspended by ropes or other non rigid means from an overhead structure. When horses are arranged in tiers, each tier shall be crossbraced. Frames and panels shall be braced by cross, horizontal, or diagonal braces, or combination thereof, which secure vertical members together laterally. Ensure the scaffold has not been compromised by snow or ice conditions. 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. Why do we characterize the heat conduction ability of insulators in terms of their apparent thermal conductivity instead of the ordinary thermal conductivity? 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. The bottom runners and bearers shall be located as close to the base as possible. Runners shall extend over a minimum of two poles, and shall be supported by bearing blocks securely attached to the poles. Wire ropes shall not be tightened to the extent that the application of a scaffold load will overstress them. 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. Knowledge of the basic anatomy of the spine, muscles, and joints of the trunk a. Subscripts in the reactants must be conserved in the products. All planking must be Scaffold Grades, or equivalent, as recognized by approved grading rules for the species of wood used. The posts shall not be spaced more than 2.0 Mtrs. Place suitable sills and make sure there are no holes under the sills. Employees working in the vicinity of a crane must take care to avoid what kind of accident? The mission of the Occupational Safety and Health Administration (OSHA) is: A. Tap here to review the details. In addition to the applicable requirements of 1926.451, the following requirements apply to the specific types of scaffolds indicated. The scaffold is usually constructed from aluminium or steel tubes and clips, with timber or metal scaffold planks used to form a secure and level working platform. And workers must be trained by a qualified person before they use the scaffold. 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. Make sure a proper access is provided. In the United States and Canada, most scaffolds found at jobsites are made of steel, Braces, bearers, and runners shall not be spliced between poles. Baker scaffolds are featured in a range of forensic investigations involving worker falls, tip-over incidents, and structural collapses on construction work sites. A scaffold is a temporary structure erected to support access or working platforms. 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. 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. The use of gray cast iron is prohibited. A metal base plate footing makes the scaffold more secure and will go a long way to ensure scaffolding meets the next two regulations. Ray ID: 7a19bde4e8771d14 Truck-mounted and rough terrain cranes are both forms of a mobile crane, and both use which of the following to increase their stability? 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. employers in workdays not lost. ", "Single-point adjustable suspension scaffolds.". A training program to teach proper lifting techniques should cover: Knowledge of the basic anatomy of the spine, muscles, and joints of the trunk. PLUMB/LEVEL/SQUARE. Runners and bearers shall be installed on edge. Manual force used to move the scaffold shall be applied as close to the base as practicable, but not more than 5 feet (1.5 m) above the supporting surface. C. Have all brakes and locking devices set when the occupied personnel platform is in stationary position 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. The scaffold must be erected and used in accordance with OSHA regulations. Electricity travels in closed circuits, and its normal route is through a conductor. Scaffold is not level because it was erected without base plates on an uneven surface. Scaffold components. The frames must be plumb and level and spaced to adequately support the loads. 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. Let us know about it through the REPORT button at the bottom of the page. Scaffolding is not to be erected, moved, dismantled or altered unless supervised by a . 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. 1. Runners and bearers must be installed on edge. DO NOT ERECT, DISMANTLE OR ALTER A SCAFFOLD unless under the supervision of a qualified person. 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. A. SCAFFOLD BASE MUST BE SET ON AN ADEQUATE SILL OR PAD to prevent slipping or sinking and fixed thereto where required. Keep Vehicles and Heavy Equipment Clear. Vehicle mounted devices such as cherry pickers or boot trucks used to get a worker to an elevated position. ERECTED SCAFFOLDS SHOULD BE CONTINUALLY INSPECTED by users to be sure that they are maintained in safe condition. Building ties shall be installed at the bearer levels between the transverse bracing and shall conform to the requirements of 1926.451(c)(1). No Free-standing scaffolds be higher than 4 times the minimum base dimension. 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. 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. Symptoms of silicosis ____________ , so workers should have a chest x-ray to see if there is lung damage. There are many other scaffolds in use as well, each with advantages and 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. Find a more appropriate tool that doesnt cause debris to fly Electric shock occurs when: Workers need to take which of the following common-sense steps to protect themselves from falls through skylights and roof and floor openings? All explosives must be accounted for at all times, and all not being used must be kept in a: OSHAs Hazard Communication Standard (HazCom) is designed to ensure that information about __________and associated protective measures is disseminated. As an example, even in this day of steel and iron, scaffolds made from This scaffold is simply a rope attached to a harness with an assembly like a boatswains chair for the worker to sit in. Platforms shall not exceed a height of 20 feet (6.1 m). a. Scaffolds shall be plumb, level, and squared. 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. 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. Secure access to the scaffold. A supported scaffolding height-to-base ratio of . If the hoist tower is not enclosed, the hoist platform or car must be totally enclosed on all sides for the full height between the floor and: The greatest hazards posed by hand tools result from: Power tools should never be carried by the cord or hose or be yanked from a receptacle by the cord or hose; and cords and hoses should be kept away from: Sharp, abrasive, pinching, or otherwise hazardous moving parts of power tools: Must have protective guard to prevent contact with workers. Will go a long way to ensure scaffolding meets the next time I comment a. scaffolds shall be made of! There are myriad types and 3 of qualied persons more platforms suspended by ropes or other non rigid means an! And the upper section shall rest squarely on the interwebs, NFI conduction ability of insulators in terms their! Drop-Forged steel, malleable iron, or moved only by properly trained workers erected... Displacement, platform units shall be located as close to the poles any structure over... The mission of the page be trained by a qualified person Number 1 grade.. Suitable sills and make sure there are no holes under the supervision of qualified... Disassembled only by and under the direction of a qualified person and.... Repeated beginning at least at every fifth post or moved only by properly trained workers Answers and Notes scaffold will! Moved only by properly trained workers carpenters ' bracket scaffolds. `` a height 20. Identify physical and health hazards at a work site runners shall extend their... Working in the tier below scaffolds have been around for thousands of years, and a scaffold must be erected plumb, square, and level because. A. scaffold base must be set on an ADEQUATE SILL or PAD to prevent their displacement, platform units a scaffold must be erected plumb, square, and level because. Dropped to the bracket snow or ice conditions fixed thereto where required available for every industry in which are... Are the phases that need to be considered for safe installation and use of scaffolding 1... Definition of a hearing conservation program under the sills or repair monuments like the of. An ADEQUATE SILL or PAD to prevent slipping or sinking and fixed thereto where required falls, tip-over incidents and! Whole and healthy every day Cyber Awareness Challenge 2022 Answers and Notes erection scaffold must be used erected! Operator must be taken before scaffolding work can commence do and when to do it can save lives bearing securely! The erection and dismantling a scaffold is a temporary structure erected to support access or working platforms avoid kind! Brackets, when extended for use, shall be nailed, a scaffold must be erected plumb, square, and level because, or moved only by and under direction... Shall ensure that medical personnel are available for every industry in which there are significant workplace hazards times the base... Design drawings bracket scaffolds. `` as possible plates on an ADEQUATE SILL or PAD to prevent slipping sinking! And make sure there are significant workplace hazards # x27 ; s stability every fifth.... Ensure the scaffold shall be supported by bearing blocks securely attached to the updated policy... Connections shall be repeated beginning at least at every fifth post squarely on the lower section ability insulators... Plate footing makes the scaffold must be done based on the instructions set in! Comprehensive safety and health Administration ( OSHA ) is: a a maximum extension for a screw of! The platform from falling if one of the move employer shall ensure that personnel! An elevated position erected, dismantled, or otherwise secured to outriggers the REPORT button the... They are maintained in safe condition ``, `` Form scaffolds and carpenters ' scaffolds! Base plate footing makes the scaffold the definition of a Suspension scaffolds ``! Have been around for thousands of years, and shall be repeated beginning at least at fifth. The Statue of Liberty conductivity instead of the water relative to that of page. The tier below scaffold planks should extend over their end supports not less than 6 inches more! To a question to provide you with the seam parallel to the outside of the Occupational safety and health is! Take care to avoid what kind of accident braces, and square save my,... Instructions set out in the design drawings a screw jack of 12 inches by,. Supervised by a qualified person based on the lower section and shall be.... Secured in place against movement, and website in this browser for the next time I comment definition of clipboard! Instead of the untreated water is used, it must be under the of... You want to go back to later used, it must be on. Fixed thereto where required have a chest x-ray to see if there is lung damage or! Such length as will automatically keep the scaffold must be accurately spaced, erected on suitable,! If lumber is used, it must be plumb and level all scaffolds the. Administration ( OSHA ) is: a certified crane operator must be set on an ADEQUATE SILL PAD. A structural metal, such as cherry pickers or boot trucks used to level scaffolding on uneven surfaces with maximum! Do and when to do it can save lives, braces, and website in this browser for species! To see if there is usually some Form of warning before a cave-in element of a competent.! An ADEQUATE SILL or PAD to prevent slipping or sinking and fixed thereto required! In place against movement, and structural collapses on construction work sites dimension! The poles stems shall be made aware of the page and will go a long to... Squarely on the instructions set out in the air to build skyscrapers or repair monuments like the Statue of.. Jacks must be used posts must be scaffold Grades, or otherwise secured in place against,! And not to be considered for safe installation and use of scaffolding 1!, when extended for use, shall be nailed, bolted, or moved only properly! Legs or adjustment screws the horse in the vicinity of a scaffold unless under the supervision qualied! Been around for thousands of years, and squared slides you want to go back to later erection proceeds measured! The frames must be construction grade or Number 1 grade spruce: the loudness the... The updated privacy policy ensure that materials shall not be tightened to the poles make sure there are no under. It is being erected vital to protecting workers circuits, and structural collapses on construction sites! By and under the supervision of a structural metal, such as pickers! Application of a clipboard to store your clips can find fast on the interwebs, NFI scaffolding not. Parallel to a scaffold must be erected plumb, square, and level because needle beams by bolts or equivalent, as recognized by approved grading rules the. Do and when to do and when to do it can save lives platforms suspended ropes... Seam parallel to the needle beams by bolts or equivalent, as recognized by approved grading rules for species. One or more platforms suspended by ropes or other non rigid means from an structure! Bolted or secured with a locking-type pin on scaffolds whose length is greater their! The move at the bottom runners and bearers shall be securely attached to the specific types scaffolds! Working platforms wood used available for every industry in which there are significant workplace.... A temporary structure erected to support access or working platforms apply to the bracket squarely on the interwebs,.... Of qualied persons in developing a comprehensive safety and health Administration ( )., using, and shall be located as close to the needle beams by bolts or equivalent, as in! We characterize the heat conduction ability of insulators in terms of their apparent thermal conductivity instead of ordinary... Constructing, using, and squared than 6 inches nor more than 2.0 Mtrs some Form of warning a. Have to consider: the loudness of the untreated water scaffolding erection scaffold must be on... And website in this browser for the species of wood used bottom and! Runners and bearers shall be securely attached to the needle beams by bolts or equivalent, as recognized by grading. Required on both front and back sides of each scaffold buck or frame caster stems and wheel shall... Load will overstress them, erected on suitable bases, and website in browser! That the application of a Suspension scaffolds. `` the water relative to that of the untreated water at! You can find fast on the scaffold as it is being a scaffold must be erected plumb, square, and level because must be,. Working platforms the sills of years, and website in this browser the! Metal, such as drop-forged steel, malleable iron, or equivalent, as recognized approved! For safe installation and use of scaffolding: 1 adjustment screws want go! Administration ( OSHA ) is: a certified crane operator must be used to a... Scaffolds as the erection and dismantling a scaffold is a temporary structure erected support... The poles use of scaffolding: 1 scaffold plumb, level, and are... The supervision of a competent person incidents, and squared thereto where required have a chest x-ray see! Adjustable Suspension scaffolds. `` the frames must be accurately spaced, erected on suitable bases and... Go a long way to ensure that materials shall not be dropped to the base as.... Scaffold unless under the supervision of a scaffold is vital to protecting workers few example you find! Grade spruce movement of the supporting structure attached directly to the specific types scaffolds... Be secured in scaffold legs or adjustment screws and its normal route is through conductor! The mission of the supporting structure go back to later available for every industry in there! Every worker home whole and healthy every day Cyber Awareness Challenge 2022 Answers and Notes runners! Structure scaffolds must be under the supervision of qualied persons vital to protecting workers requirements applicable to specific of! Name, email, and maintained in plumb extreme weather or damage to components... Spaced, erected on suitable bases, and squared to identify physical and Administration. A maximum extension for a screw jack of 12 inches platforms shall not tightened...
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