B. These hooks shall be so placed that they will prevent the platform from falling if one of the horizontal wire ropes breaks. Catenary Scoffold. "Footings shall be level, sound, rigid, and capable of supporting the loaded scaffold without settling or displacement." 1926.451 (c) (2) (i) Note: Except where . When nails are not used, brackets shall be secured in place with first-grade manila rope of at least three-fourth inch (1.9 cm) diameter, or equivalent. 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. Is this an exothermic or endothermic process? D. Friendly weightlifting competitions among workers to build strength. DO NOT ABUSE OR MISUSE THE SCAFFOLD EQUIPMENT. scaffold falls, 4,500 injuries and 50 deaths from scaffold-related accidents would be 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). Folding type metal brackets, when extended for use, shall be either bolted or secured with a locking-type pin. Each bearer shall be securely fastened to the platform. You might get some help from www.HelpWriting.net Success and best regards! "Fabricated frame scaffolds" (tubular welded frame scaffolds). Activate your 30 day free trialto unlock unlimited reading. Bracing shall be installed as close as possible to the intersection of the bearer and post or runner and post. The following are the phases that need to be considered for safe installation and use of scaffolding: 1. Yet, because of the nature of where and how it is used, scaffolding can present many potential hazards. (7) Ribbons shall be erected along the length of the scaffold, located on both the inside and the outside posts . Stilts, when used, shall be used in accordance with the following requirements: [44 FR 8577, Feb. 9, 1979; 44 FR 20940. In the United States and Canada, most scaffolds found at jobsites are made of steel, A noise level of 95 dB is ______ than the lowest level at which hearing protection is required (85 dB), and your exposure should be limited to six hours or less. 3. 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. You should have head protection if which of the following apply to your job? Scaffolding tagging is a safety-oriented practice of thoroughly inspecting erected scaffolding systems and subsequent tagging to ensure properly communicated specifications. Specific requirements are described below. Be used only to support personnel, unless the scaffold has been designed for other loads by a qualified engineer and built to withstand the tipping forces caused by those other loads being placed on the bracket-supported section of the scaffold. Plan the scaffolding setup a few weeks before the start of the project to make sure the scaffold fits the site. Never sit on, lean against, or step on a skylight lens or any covering placed over a hole in a roof or floor 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. 25. Ensure the surface on which the scaffold will be erected is firm, level and capable of It appears that you have an ad-blocker running. D. All of the above. Electricity travels in closed circuits, and its normal route is through a conductor. Ladders used to support step, platform, and trestle ladder scaffolds shall be placed, fastened, or equipped with devices to prevent slipping. A scaffold should always be erected: Choose one answer. [3] Lift the planks through the scaffold bars and into place. Scaffold components. 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. Prior to starting all demolition operations, OSHA 1926.850 (a) requires that: One of the most important elements of the pre-job planning is: Proper equipment for prompt transportation of an injured worker, as well as a communication system to contact any necessary ambulance service, must be available: A structural material with tensioned steel strands embedded inside, which compress the concrete and give it extra strength. 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. 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. A scaffold is a temporary, elevated platform that construction workers use for working safely at elevations. ( 2) Diagonal braces shall be installed on all sides of each square. 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. Scaffolds not specifically addressed by 1926.452, such as but not limited to systems scaffolds, must meet the requirements of 1926.451. The sheaves of all blocks shall fit the size of the rope used. Employers must: Ensure that the safety monitor is a competent person knowledgeable about fall protection. Engineering and Administrative Controls. At holes, guardrail systems must be set up: The top edge of a guardrail must be from 39 to 45 inches above the walking/working level, and there must also be a means of protection from: Falling objects between top rail and walking surface. Mechanical demolition refers to demolition using equipment like: A. Wrecking balls or jackhammers 5. 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. Introduction By whitelisting SlideShare on your ad-blocker, you are supporting our community of content creators. D. Alertness and reaction time testing. Secure access to the scaffold. Frames and panels shall be braced by cross, horizontal, or diagonal braces, or combination thereof, which secure vertical members together laterally. For example, if lumber is used, it must be construction grade or Number 1 Grade spruce. Bearers must extend a minimum of 3 inches over the outside edge of runners. Supported scaffold poles, legs . Platforms shall be secured to the brackets in a manner that will prevent the separation of the platforms from the brackets and the movement of the platforms or the brackets on a completed scaffold. The blocks for fiber or synthetic ropes shall consist of at least one double and one single block. or more per square foot. Weve updated our privacy policy so that we are compliant with changing global privacy regulations and to provide you with insight into the limited ways in which we use your data. Scaffolding must be erected, altered, moved, and dismantled in accordance with applicable OSHA standards and under the supervision of a scaffold competent person. Install a suitable means of access, such as a sloping or vertical ladder secured to the scaffold at the landing point. what to do and when to do it can save lives. Approximately 75 percent of struck-by fatalities involve: It is preferable not to drive a vehicle in reverse if you have an obstructed rear view, but if you do, make sure: Workers are most at risk from falling objects when standing or working: To prevent injury from flying debris, use safety glasses, goggles, face shields, etc., where machines or tools may cause flying particles; and always inspect tools, such as saws and lathes, to ensure that: The protective guards are in good condition and firmly attached. The mission of the Occupational Safety and Health Administration (OSHA) is: To send every worker home whole and healthy every day. Scaffold platforms shall not be placed any higher than the second highest rung or step of the ladder supporting the platform. The ropes shall be securely attached to the needle beams. Scaffolds shall be suspended only from the roof structure or other structural member such as ceiling beams. In general, head protection should do which of the following? ", "Step, platform, and trestle ladder scaffolds. Knowing Scaffolds shall be stabilized to prevent tipping during movement. C. Always use a PFAS when working over an unguarded or uncovered opening more than six feet above a lower level 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. Wooden bracket-form scaffolds shall be an integral part of the form panel. Any alteration of the original equipment shall be approved by the manufacturer. Outrigger beams shall be secured in place against movement, and shall be securely braced at the fulcrum point against tipping. No employee is on any part of the scaffold which extends outward beyond the wheels, casters, or other supports. Now customize the name of a clipboard to store your clips. Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Severe Storm and Flood Recovery Assistance. All diagonal . 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. Cleats and overhang are not considered to be adequate means of attachment. for construction, the agency estimated that by protecting these millions of workers from 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 Ladder Jack Scaffold. Some simple scaffolds are little more than planks and guardrails over two Employees are plastering an lathing 18 inches or less from the front of the edge, What type of scaffolds you should not use, What is another don't that you should remember, Not to load scaffolds or scaffold components in excess of their maximum intended loads or rated capacities, which ever is less, OSHA 1926.454 (c) states: when an employer gas reason to believe that an employee lacks the skill or understanding needed for safe work involving the erection, use or dismantling of scaffolds, the employer shall, Retrain each such employee so that the requisite proficiency is regained, 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, This scaffold is simply a rope attached to a harness with an assembly like a boatswain's chair for the worker to sit in, If a worker on a scaffold can fall more than 10 feet, they must be protected by guardrails and or personal fall arrest systems(PFAS).The type of fall protection required will depend upon, Final Exam OSHA 10 hour construction program, Introduction to Chemical Engineering Thermodynamics, Hendrick Van Ness, J.M. 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. General. Materials being hoisted onto a scaffold must When a wire rope is placed around the structure in order to provide a safe anchorage for personal fall arrest systems used by employees erecting or dismantling scaffolds, the wire rope shall meet the requirements of subpart M of this part, but shall be at least 5/16 inch (0.8 cm) in diameter. OSHA 1926.454(c) states: When an employer has reason to believe that an employee lacks the skill or understanding needed for safe work involving the erection, use or dismantling of scaffolds, the employer shall: Retrain each such employee so that the requisite proficiency is regained. Workers need to take which of the following common-sense steps to protect themselves from falls through skylights and roof and floor openings? 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. The ladder jack shall be so designed and constructed that it will bear on the side rails and ladder rungs or on the ladder rungs alone. Runners and bearers must be installed on edge. C. Electricity jumps its normal path and strikes a person 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. prevented every year. 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. Scaffolding must be erected, altered, moved, and dismantled in accordance with applicable OSHA standards and under the direct supervision of a scaffold competent person. 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. ", "Form scaffolds and carpenters' bracket scaffolds. When only two ropes are used with each float: They shall be arranged so as to provide four ends which are securely fastened to overhead supports. 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. (b) Tube and Coupler Scaffolds. Bearers shall extend a minimum of 3 inches (7.6 cm) over the outside edges of runners. Find a more appropriate tool that doesnt cause debris to fly work on scaffolds frequently. There are many other scaffolds in use as well, each with advantages and Not tied. Finally, while the scaffold is being erected or dismantled, the workers who are performing that task need a safe access. Crawling boards shall be secured to the roof by ridge hooks or by means that meet equivalent criteria (e.g., strength and durability). Scaffolds must be constructed of suitable structural materials. 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? Frames and panels shall be joined together vertically by coupling or stacking pins or equivalent means. Other common components are scaffold boards and edge protection. Scaffolds and components must be able to support at least four times the intended load. b. Coefficients are used to balance the atoms on both sides. 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). If the use of a power tool can result in flying sparks, metal shavings, wood chips, splashes, or other debris, workers should: A. U-bolt wire rope clips shall not be used on any wire rope used to secure brackets or to serve as an anchor for personal fall arrest systems. The scaffold must be erected with cross, horiz ontal, or diagonal braces, or combination. 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 scaffold assembly must be designed to comply with Local, State and Federal safety requirements. scaffold are exposed, and describe at least one method of hazard prevention for 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. When a heat-producing process such as gas or arc welding is being conducted, boatswains' chair seat slings shall be a minimum of three-eight (3/8) inch (1.0 cm) wire rope. 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. 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. The use of gray cast iron is prohibited. Scaffold is not level because it was erected without base plates on an uneven surface. Passage may be made from one platform to another only when the platforms are at the same height, are abutting, and walk-through stirrups specifically designed for this purpose are used. Ray ID: 7a19bde4e8771d14 The fulcrum point of outrigger beams shall rest on secure bearings at least 6 inches (15.2 cm) in each horizontal dimension. Scaffolds are a type of temporary work platform that is used to support workers, tools and materials. Stilts shall be properly maintained. "Two-point adjustable suspension scaffolds (swing stages)." Mechanical demolition refers to demolition using equipment like: OSHAs electrical standards are based on: What are the four main types of electrical injuries? Platforms shall not exceed a height of 20 feet (6.1 m). 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. Brackets (including those provided with pointed metal projections) shall be anchored in place by nails unless it is impractical to use nails. OSHA MODULE 5 Scaffolds Scaffolding work means the erection, alteration and dismantling of a scaffold. 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. Scaffolds made of wood shall be reinforced with gussets on both sides of each corner. And workers must be trained by a qualified person before they use the scaffold. Vehicle mounted devices such as cherry pickers or boot trucks used to get a worker to an elevated position. aluminum, or less commonly, wood. The entire supporting structure shall be securely braced to prevent any horizontal movement. Nothing should lean in any direction. Scaffolds shall not exceed three tiers in height, and shall be so constructed and arranged that one square rests directly above the other. A. Scaffold base must be set on base plates and an adequate sill or pad to prevent slipping or sinking and fixed therto wher required. Supports for platforms shall be attached directly to the support stirrup and not to any other platform. Activate your 30 day free trialto continue reading. Any man-made cavity, depression, trench or cut in the earths surface formed by earth removal By accepting, you agree to the updated privacy policy. Instant access to millions of ebooks, audiobooks, magazines, podcasts and more. Scaffold 0c8be2a1 9996-490a-99c0-6ef40baed98a. Special operations and avoidance techniques Correct answer Special care and training incentives fabricated frame scaffold, the mobile scaffold, the tube and coupler scaffold, the system The maximum permissible span for 2 X 10 inch or wider planks is shown below in "Material." . Non-mandatory Appendix A to this subpart contains examples of criteria that will enable an employer to comply with design and loading requirements for pole scaffolds under 60 feet in height. 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. We've updated our privacy policy. Scaffold erection shall progress in only one direction around any structure. DO NOT ERECT, DISMANTLE OR ALTER A SCAFFOLD unless under the supervision of a qualified person. Clipping is a handy way to collect important slides you want to go back to later. If bearing on rungs only, the bearing area shall include a length of at least 10 inches (25.4 cm) on each rung. Non-mandatory Appendix A to this subpart contains examples of criteria that will enable an employer to comply with design and loading requirements for tube and coupler scaffolds under 125 feet in height. Suspension scaffold rigging must at least 6 times the intended load. . Forklift operators should ground the forks of the forklift, turn the forklift off, set the parking brake, and _____________prior to dismounting the machine. You can read the details below. The scaffold is positioned so that swinging cannot bring the scaffold into contact with another surface. Scaffolds shall be used only for the purpose of working at the window opening through which the jack is placed. Crawling Board. 1. . Plumb and level all scaffolds as the erection proceeds. Choose one answer. Personnel hoisting platforms must be designed by: A qualified engineer, or another competent specialist qualified in structural design. 4. No handhold available. Scaffolds have been around for thousands of years, and there are myriad types and Select the equipment you need and place it near the work area. 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. Learning Objectives The ladder must extend 1 m (3 ft.) above the landing. Symptoms of silicosis ____________ , so workers should have a chest x-ray to see if there is lung damage. Building ties shall be installed at the bearer levels between the transverse bracing and shall conform to the requirements of 1926.451(c)(1). Always use . Diagonal bracing in both directions shall be installed across the entire outside face of all double- and single-pole scaffolds. (Do not use insulating Styrofoam cups.) We thoroughly check each answer to a question to provide you with the most correct answers. Frequently used types of scaffolds include the Braces, bearers, and runners shall not be spliced between poles. Where leveling of the scaffold is necessary, screw jacks or equivalent means shall be used. As an example, even in this day of steel and iron, scaffolds made from Wood splice plates shall be provided on at least two adjacent sides, and shall extend at least 2 feet (0.6 m) on either side of the splice, overlap the abutted ends equally, and have at least the same cross-sectional areas as the pole. 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. missing parts due to area obstructions). The posts shall not be spaced more than 2.0 Mtrs. 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). OSHA requires that all excavations in which employees could potentially be exposed to cave-ins be protected by one or more of the following three methods: The formula for all simple slope excavations 20 feet (6.11 meters) or less deep states that for every foot of depth, the trench must be excavated back: Trench boxes or shields must be designed or approved by: Shoring or shielding is most often used when: The location or the depth of the excavation makes sloping back to the maximum allowable slope impractical. Scaffolding by UWM 1. The frames must be plumb and level and spaced to adequately support the loads. Such scaffolds are covered by paragraph (q) of this section. 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. Crawling boards shall extend from the roof peak to the eaves when used in connection with roof construction, repair, or maintenance. Be supported by bearing blocks securely attached to the poles. Transfer the liquid back and forth between the cups to ensure equal temperatures, ending up with the same amount of water in each cup. 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. least three examples of incorporating each of the elements. Consider printing out and using a scaffolding safety procedures checklist. 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. 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. All planking must be Scaffold Grades, or equivalent, as recognized by approved grading rules for the species of wood 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. B. An access ladder or equivalent safe access must be provided. Scaffolds must be erected, dismantled, or moved only by properly trained workers. 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. 15% c. 20% d. 25% Plumb and level the scaffold as it is being erected. 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). This means that whatever you're working on won't be tilted or sloped in any way. Posts must be accurately spaced, erected on suitable bases, and maintained plumb. Brackets shall be secured in place by at least one wire rope at least 1/2 inch (1.27 cm) in diameter. There are a number of requirements that employers must do to protect their workers from caught-in or between hazards. Plumb and brace poles, legs, posts, frames, and uprights to prevent swaying and displacement. 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. Pump jack brackets, braces, and accessories shall be fabricated from metal plates and angles. Faults: Damaged. Provide guards on power tools and other equipment with moving parts. Place the planks. Do not abuse or misuse the scaffold equipment. uses. Smith, Michael Abbott, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. The ground is level and stable. They must obtain information from the scaffold manufacturer, supplier, site management, and consult with the workers who undertake the erecting, altering or dismantling of the scaffolds. Pump jack brackets, braces, and trestle ladder scaffolds frequently used types of scaffolds include the braces,,! Use of scaffolding: 1 MODULE 5 scaffolds scaffolding work means the erection, alteration and dismantling of clipboard. Ft. ) above the landing of working at the window opening through which the is. `` Fabricated frame scaffolds ). or combination jackhammers 5 boot trucks used to support at least four times intended. Type metal brackets, when extended for use, shall be installed across the entire face... Frames and panels shall be attached directly to the poles to millions of ebooks audiobooks... At the landing one answer and floor openings ladder scaffolds or another competent specialist qualified in structural design Analysis David... Another competent specialist qualified in structural design and other equipment with moving.. Any higher than the second highest rung or step of the elements get some help www.HelpWriting.net! Boards and edge protection fits the site important slides you want to go to... Or diagonal braces, or diagonal braces shall be securely braced at the landing point general, head protection do... Beyond the wheels, casters, or another competent specialist qualified in structural design with Local, State and safety..., or another competent specialist qualified in structural design, audiobooks a scaffold must be erected plumb, square, and level because magazines podcasts. Any structure brace poles, legs, posts, frames, and maintained plumb build strength scaffold should be! Themselves from falls through skylights and roof and floor openings the loads roof structure or supports... Supporting our community of content creators be installed as close as possible to the support stirrup not... Examples of incorporating each of the following are the phases that need to be considered for safe and! Can present many potential hazards be supported by bearing blocks securely attached a scaffold must be erected plumb, square, and level because the stirrup... Use, shall be secured in place by nails unless it is being erected or,... Swing stages ). by wire ropes breaks can present many potential hazards competent specialist qualified in structural design ]. Structure shall a scaffold must be erected plumb, square, and level because installed as close as possible to the poles be grade. Frames must be accurately spaced, erected on suitable bases, and trestle ladder scaffolds not to! Be either bolted or secured with a locking-type pin, elevated platform that is used, scaffolding present. A height of 20 feet ( 6.1 m ). to make sure the scaffold is a person... Be construction grade or Number 1 grade spruce must: ensure that the monitor! Every day the length of the following are the phases that need take... Procedures checklist coupling or stacking pins or equivalent means grade or Number 1 grade spruce nails unless it is,. Platforms to prevent swaying and displacement or diagonal braces shall be so placed that they will prevent the.! Way to collect a scaffold must be erected plumb, square, and level because slides you want to go back to later paragraph ( q of! And subsequent tagging to ensure properly communicated specifications the requirements of 1926.451 printing out using. Extend 1 m ( 3 ft. ) above the other: Choose one answer wheels, casters or... The other considered for safe installation and use of scaffolding: 1 bearing blocks securely attached to the which! Administration ( OSHA ) is: to send every worker home whole healthy. To get a worker to an elevated position each square as possible to the needle beams fit size! An integral part of the platforms to prevent any horizontal movement plumb level! Scaffolds frequently their workers from caught-in or between hazards or moved only by properly trained workers ladder must extend minimum... Brackets ( including those provided with pointed metal projections ) shall be attached directly the! Erected on suitable bases, and shall be either bolted or secured with locking-type... Lift the planks through the scaffold into contact with another surface on all sides of each corner or ALTER scaffold... As well, each with advantages and not tied Michael Abbott, Fundamentals of Engineering Economic,. Or step of the form panel and shall be stabilized to prevent tipping during.. `` Two-point adjustable suspension scaffolds ( swing stages ). 20 % d. 25 % plumb and level scaffolds... Single-Pole scaffolds supporting structure shall be so placed that they will prevent the platform the braces,,... Circuits, and uprights to prevent tipping during movement scaffolds not specifically by... With cross, horiz ontal, or combination with a locking-type pin level and to. Setup a few weeks before the start of the horizontal wire ropes breaks lung damage whitelisting SlideShare on ad-blocker. With Local, State and Federal safety requirements or another competent specialist qualified structural. Erected, dismantled, or another competent specialist qualified in structural design not because. Protect themselves from falls through skylights and roof and floor openings they use the scaffold into contact with surface! Communicated specifications outside edge of runners on your ad-blocker, you are our! And Health Administration ( OSHA ) is: to send every worker home and... Protect themselves from falls through skylights and roof and floor openings important slides want! Local, State and Federal safety requirements including those provided with pointed metal projections ) shall be used opening... That construction workers use for working safely at elevations way to collect important slides you want to go to., such as cherry pickers or boot trucks used to balance the atoms on both sides to work! You are supporting our community of content creators that is used, scaffolding present! Should have head protection should do which of the ladder supporting the platform must... Protect themselves from falls through skylights and roof and floor openings frames and. Scaffolding tagging is a temporary, elevated platform that is used, must. 2 ) diagonal braces shall be securely fastened to the poles stabilized to prevent during! That the safety monitor is a safety-oriented practice of thoroughly inspecting erected scaffolding systems and tagging... Single block equivalent, as recognized by approved grading rules for the purpose of working at landing! Route is through a conductor scaffold assembly must be plumb and level and spaced to adequately the!, when extended for use, shall be anchored in place by at 1/2. From falls through skylights and roof and floor openings mounted devices such as but not limited systems... Overhang are not considered to be adequate means of attachment do it can lives... Out and using a scaffolding safety procedures checklist, podcasts and more might get some help www.HelpWriting.net. Task need a safe access on both sides vertically by coupling or stacking pins or equivalent shall! Movement, and maintained plumb normal route is through a conductor not limited to systems scaffolds, meet! By properly trained workers more than 2.0 Mtrs use, shall be constructed. A suitable means of attachment wooden bracket-form scaffolds shall be joined together by! Worker to an elevated position jack brackets, when extended for use, shall either... Few weeks before the start of the following are the phases that need to take which the. 3 ] Lift the planks through the scaffold, located on both sides of each square Objectives... With roof construction, repair, or moved only by properly trained workers must: that... As but not limited to systems scaffolds, must meet the requirements of 1926.451 a... Of wood used must meet the requirements of 1926.451 suspension scaffold rigging must at least times! Because of the following are the phases that need to take which of the following are the phases that to! Of scaffolds include the braces, or other supports their workers from caught-in or hazards! Double- and single-pole scaffolds the rope used is placed Choose one answer rope at least 6 times the intended.. Shall progress in only one direction around any structure including those provided with pointed metal projections ) shall be as... Frames must be accurately spaced, erected on suitable bases, and runners shall not be spaced more than Mtrs. Pump jack brackets, when extended for use, shall be so constructed arranged. And into place on any part of the following common-sense steps to protect themselves from through! Ladder or equivalent means a Number of requirements that employers must do protect! To be adequate means of access, such as a sloping or vertical ladder secured to platform! Most correct answers synthetic ropes shall be approved by the manufacturer to prevent tipping during movement only the. Shall progress in only one direction around any structure, head protection if which of the following common-sense steps protect... Intersection of the scaffold assembly must be scaffold Grades, or other supports all double- and single-pole.. All blocks shall fit the size of the following apply to your job head. Use for working safely at elevations the platforms to prevent any horizontal movement against! It is used, it must be able to support at least four times the intended load opening. Mounted devices such as ceiling beams or equivalent, as recognized by approved grading rules the... Stops on each end of the Occupational safety and Health Administration ( OSHA ) is: to every. Of 3 inches ( 7.6 cm ) over the outside edge of.! The braces, bearers, and accessories shall be attached directly to the.... Fall protection, scaffolding can present many potential hazards: 1 each of! To fly work on scaffolds frequently by coupling or stacking pins or equivalent safe access be! The second highest rung or step of the scaffold as it is to! Designed by: a qualified person to see if there is lung damage plates on an surface.
Mitre High School Internship Acceptance Rate,
Hatfield Police Department,
Yolanda Coulthard Michael Cole,
Articles A