Scaffolds are commonly used in construction work so workers have a safe, stable work platform when work cannot be done at ground level or on a finished floor. ERECTED SCAFFOLDS SHOULD BE CONTINUALLY INSPECTED by users to be sure that they are maintained in safe condition. 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 original scaffold layout is still feasible. 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. You can read the details below. The frames must be plumb and level and spaced to adequately support the loads. (8) All ladders used for access shall conform to ladders, Article 25. The noise exposure measurement your employer makes must include all continuous, intermittent and ______ noise within a range of 80 dB to 130 dB. Bearers shall extend beyond the posts and runners, and shall provide full contact with the coupler. improper grounding of circuitry and equipment. When erected and used properly, it serves its function well. OSHA MODULE 5 Scaffolds 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. Any alteration of the original equipment shall be approved by the manufacturer. 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. Forklift operators should ground the forks of the forklift, turn the forklift off, set the parking brake, and _____________prior to dismounting the machine. 7. By whitelisting SlideShare on your ad-blocker, you are supporting our community of content creators. Scaffolds shall be suspended only from the roof structure or other structural member such as ceiling beams. 4. In addition to the applicable requirements of 1926.451, the following requirements apply to the specific types of scaffolds indicated. Scaffolds shall be constructed in accordance with paragraphs (a), (b), or (c) of this section, as appropriate. and must be provided on any scaffold 10 feet or more above a lower level. There are an estimated $90 million dollars lost because of . Install a suitable means of access, such as a sloping or vertical ladder secured to the scaffold at the landing point. Scaffold platforms must be fully decked or planked. That requirement reflects the additional hazards and structural stress involved with such heights. Do not sell or share my personal information. Finally, while the scaffold is being erected or dismantled, the workers who are performing that task need a safe access. Erected scaffolds should be continually inspected by users to be sure that they are maintained in safe condition. Scaffolding means a convenient platform for persons to work at height. 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. what to do and when to do it can save lives. 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. 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). 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. The entire inside face of double-pole scaffolds used to support loads of 50 lbs. Scaffolds shall be suspended from metal outriggers, brackets, wire rope slings, hooks, or means that meet equivalent criteria (e.g., strength, durability). Transverse bracing forming an "X" across the width of the scaffold shall be installed at the scaffold ends and at least at every third set of posts horizontally (measured from only one end) and every fourth runner vertically. If this is the approach at your job site, then: You must clean and disinfect the eyewear between each use. The blocks for fiber or synthetic ropes shall consist of at least one double and one single block. The use of gray cast iron is prohibited. Movement of the scaffold must be under the direction of a competent person. Safe access above 2 feet. By accepting, you agree to the updated privacy policy. C. Workplace and engineering controls If the use of a power tool can result in flying sparks, metal shavings, wood chips, splashes, or other debris, workers should: A. When dismantling a scaffold, all work should be conducted: Tube and coupler scaffolds over 125 feet high must be designed by: What type of scaffold other than the tube and coupler scaffold is ideal for use around complex structures? 9. Any scaffold that is more than 125 feet in height above the base must be designed by a registered professional engineer. 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The SlideShare family just got bigger. least three examples of incorporating each of the elements. aluminum, or less commonly, wood. scaffold are exposed, and describe at least one method of hazard prevention for On scaffolds whose length is greater than their height, such bracing shall be repeated beginning at least at every fifth post. 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. Cross braces must keep the scaffold plumb, level, and square; All brace connections must be secured to prevent dislodging; Frames and panels must be joined together vertically by coupling or stacking pins or equivalent means; Frames and panels must be locked together to prevent uplift (separation of a By definition a scaffold is a temporary, elevated platform fabricated frame scaffold, the mobile scaffold, the tube and coupler scaffold, the system Building ties shall be installed at the bearer levels between the transverse bracing and shall conform to the requirements of 1926.451(c)(1). 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 Ensure the scaffold has not been compromised by snow or ice conditions. 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. 1926.452 - Additional requirements applicable to specific types of scaffolds. 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. Brackets (including those provided with pointed metal projections) shall be anchored in place by nails unless it is impractical to use nails. Clipping is a handy way to collect important slides you want to go back to later. "Footings shall be level, sound, rigid, and capable of supporting the loaded scaffold without settling or displacement." 1926.451 (c) (2) (i) uses. Brackets used to support cantilevered loads shall: Be seated with side-brackets parallel to the frames and end-brackets at 90 degrees to the frames; Not be bent or twisted from these positions; and. Which of these is required if the workers body, hands or clothing may come into contact with moving parts? If bearing on rungs only, the bearing area shall include a length of at least 10 inches (25.4 cm) on each rung. Float Scaffold. Such scaffolds are covered by paragraph (q) of this section. Keep Vehicles and Heavy Equipment Clear. 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. Always use . C. Both A and B The mission of the Occupational Safety and Health Administration (OSHA) is: To send every worker home whole and healthy every day. 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. Scaffolds must be constructed of suitable structural materials. Each has You do not have access to www.concreteconstruction.net. Scaffolds made of wood shall be reinforced with gussets on both sides of each corner. Ladders used to support ladder jacks shall be placed, fastened, or equipped with devices to prevent slipping. In noisy jobsites, these are often used to provide instructions to crane and derrick operators: Since its implementation in 1971, OSHA has: Helped cut work-related fatalities nearly in half and cut excavation and trenching fatalities by more than a third. Diagonal braces shall be installed on all sides of each square. DO NOT ABUSE OR MISUSE THE SCAFFOLD EQUIPMENT. Do Not Try To Drive More Than______Hours In Any One Day. Wire ropes shall not be tightened to the extent that the application of a scaffold load will overstress them. 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. Ladders used to support step, platform, and trestle ladder scaffolds shall be placed, fastened, or equipped with devices to prevent slipping. Baker scaffolds are featured in a range of forensic investigations involving worker falls, tip-over incidents, and structural collapses on construction work sites. 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) Tube and Coupler Scaffolds. 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. 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. You might get some help from www.HelpWriting.net Success and best regards! Activate your 30 day free trialto continue reading. Horizontally at each end and at 30 feet intervals measured from one end only. B. 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. In the United States and Canada, most scaffolds found at jobsites are made of steel, B. We need to follow scaffolding safety procedures. How to Erect Access Frame Scaffolding How to Erect Access Frame Scaffolding www.worksafebc.com Select . Each pump jack bracket shall have two positive gripping mechanisms to prevent any failure or slippage. True or False: There is usually some form of warning before a cave-in. 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. Work benches shall not be used as scaffold platforms. Scaffold components. When wood poles are constructed of two continuous lengths, they shall be joined together with the seam parallel to the bracket. Name the three types of scaffolds and describe their main characteristics List at least three of the four main hazards to which persons working on a Scaffolds must be braced by cross, horizontal, or diagonal braces, or a combination thereof. 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 is not to be erected, moved, dismantled or altered unless supervised by a . scaffold, and the suspended scaffold. Be placed on a firm foundation and be uniformly level within 1 percent of level grade 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? The platform shall be supported by a minimum of two bearers, each of which shall project a minimum of 6 inches (15.2 cm) beyond the platform on both sides. All brace connections must be secured. Scaffolding tagging is a safety-oriented practice of thoroughly inspecting erected scaffolding systems and subsequent tagging to ensure properly communicated specifications. The four lifting principles that govern a cranes mobility and safety during lifting operations are: Center of gravity, leverage, stability and structural integrity. 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. Using cranes to hoist material can have serious consequences if the process is not performed properly. When horses are arranged in tiers, each horse shall be placed directly over the horse in the tier below. C. Always use a PFAS when working over an unguarded or uncovered opening more than six feet above a lower level Add several tablespoons of table salt to one cup and stir. Where wooden poles are spliced, the ends shall be squared and the upper section shall rest squarely on the lower section. 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. All brace connections shall be secured. D. Armed robots. When balancing a chemical equation. D. Stop using the tool, A. Power systems used to propel mobile scaffolds shall be designed for such use. Ensure the surface on which the scaffold will be erected is firm, level and capable of Employees working in the vicinity of a crane must take care to avoid what kind of accident? Any part of a building or structure used to support the scaffold shall be capable of supporting the maximum intended load to be applied. The upper tiers shall stand on a continuous row of planks laid across the next lower tier, and shall be nailed down or otherwise secured to prevent displacement. a. Subscripts in the reactants must be conserved in the products. Any part of a building or structure used to support the scaffold shall be capable of supporting the maximum intended load to be applied. It provides a safe and stable platform for workers. This scaffold is simply a rope attached to a harness with an assembly like a boatswains chair for the worker to sit in. 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. 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. Yet, because of the nature of where and how it is used, scaffolding can present many potential hazards. 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. Make sure the scaffold is stable. The three elements of a basic program for electrical safety are: All portable electric tools that are damaged shall be: If you have a three-prong plug and a two-hole receptacle, it is acceptable to: Use an adapter with an adapter wire connected to known ground. General. Secure access to the scaffold. 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. 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 SCAFFOLDS MUST BE ERECTED IN ACCORDANCE WITH DESIGN AND/OR MANUFACTURERS' RECOMMENDATIONS. Independent support lines and suspension ropes shall not be attached to the same points of anchorage. 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. To prevent surface water from entering an excavation and to provide adequate drainage of the adjacent area, OSHA standards require the use of: Water removal equipment, diversion ditches, dikes, or other suitable methods. Scaffolds shall not be bridged one to another. ( 2) Diagonal braces shall be installed on all sides of each square. 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. B. Two other errors mentioned in this module that often lead to trouble are: Improper maintenance and failure to conduct regular inspections. Bearers shall extend a minimum of 3 inches (7.6 cm) over the outside edges of runners. 5. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. The scaffold must be erected and used in accordance with OSHA regulations. Scaffolds are plumb, square, level and situated on base . B. Which of the following is an element of a hearing conservation program? D. Friendly weightlifting competitions among workers to build strength. Use of fall protection above 10 feet. 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. scaffolds shall be braced by cross, horizontal, or diagonal braces, by restrained platforms, or by other equivalent means - the erected scaffold must be level, square, and plumb; the working platform must be fully decked; casters shall have rubber or similar resilient tires with wheels having a minimum diameter of 5" all scaffold casters shall . 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. feet in the air to build skyscrapers or repair monuments like the Statue of Liberty. The maximum permissible span for 2 X 10 inch or wider planks is shown below in "Material." . 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. Ladder Jack Scaffold. Bearers must extend a minimum of 3 inches over the outside edge of runners. 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. 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. Employers must: Ensure that the safety monitor is a competent person knowledgeable about fall protection. Introduction 2. Bracing shall be installed as close as possible to the intersection of the bearer and post or runner and post. for construction, the agency estimated that by protecting these millions of workers from 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. Scaffolding must be erected, dismantled or moved by qualified employees that are supervised by a competent person. Scaffold 0c8be2a1 9996-490a-99c0-6ef40baed98a. . No Free-standing scaffolds be higher than 4 times the minimum base dimension. "Fabricated frame scaffolds" (tubular welded frame scaffolds). Pump jack brackets, braces, and accessories shall be fabricated from metal plates and angles. Scaffolding must not be placed on unstable objects, such as bricks or blocks. 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. disadvantages. All vehicles used for the transportation of explosives shall have tight floors, and any exposed spark-producing metal on the inside of the body shall be: Covered with wood or other non-sparking material. All vertical joints of the scaffold are attached and secured by bolts and nuts or other fastening devices of adequate strength; b. Supported scaffold poles, legs . 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. 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). Scaffolds constructed of tube and coupler components shall also comply with the requirements of paragraph (b) of this section; Scaffolds constructed of fabricated frame components shall also comply with the requirements of paragraph (c) of this section. A staging area is available. Plumb and level the scaffold as it is being erected. 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. Because using cranes or derricks to hoist personnel poses a serious risk to the employees being lifted, any cranes and derricks that hoist personnel must: A. Screw jacks must be used to level scaffolding on uneven surfaces with a maximum extension for a screw jack of 12 inches. Scaffolding Injuries Approximately 2.3 million construction workers work on scaffolds regularly. Where conditions preclude the attachment of bracing to posts, bracing shall be attached to the runners as close to the post as possible. 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 _____. D. To ensure that medical personnel are available for every industry in which there are significant workplace hazards. To prevent their displacement, platform units shall be nailed, bolted, or otherwise secured to outriggers. 1. 10. 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. B. Each bracket shall be attached to the securing wire rope (or ropes) by a positive locking device capable of preventing the unintentional detachment of the bracket from the rope, or by equivalent means. Scaffolding is a temporary structure that provides support for workers, plants, and materials used in building, construction, maintenance, repair, and demolition work. e) must be made of pipe E WCB Regulations state: Tubular and similar type section scaffolding shall be erected plumb and _____. Mechanical demolition refers to demolition using equipment like: OSHAs electrical standards are based on: What are the four main types of electrical injuries? 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. If the scaffold is built even a few degrees off plumb, the resulting instability could cause the weight of the scaffold to shift . [3] Lift the planks through the scaffold bars and into place. fScaffolding A registered professional engineer must design and certify scaffolds: with wood poles and over 60 feet in height frame scaffolds over 125 feet in height outrigger scaffolds plus scaffold erections when intended loads exceed tube and coupler scaffold standard ratings USA (v. 2008) fTypes of Scaffolds USA (v. 2008) fSupported Scaffolds Attached and secured by bolts and nuts or other fastening devices of adequate strength ; B module! Like the Statue of Liberty is the approach at your job site, then: you must clean disinfect. Could cause the weight of the scaffold shall be capable of supporting the maximum intended to. Ensure properly communicated specifications the worker to sit in found at jobsites are made of steel, B consequences... Of each square entire inside face of double-pole scaffolds used to support the.., level and spaced to adequately support the scaffold is built even a few degrees off plumb, the who... Shall be approved by the manufacturer - additional requirements applicable to specific types of scaffolds indicated be CONTINUALLY INSPECTED users! Wider planks is shown below in & quot ; Material. & quot.... Edges of runners 2 ) diagonal braces shall be nailed, bolted, or otherwise to. Post or runner and post or runner and post post or runner and post runner. And structural collapses on construction work sites that medical personnel are available for every industry in which are! Enjoy access to www.concreteconstruction.net and how it is impractical to use nails fastening devices of adequate ;! 2.3 million construction workers work on scaffolds regularly might get some help from www.HelpWriting.net Success and regards! Boatswains chair for the worker to sit in weightlifting competitions among workers build. And best regards boatswains chair for a scaffold must be erected plumb, square, and level because worker to sit in that are supervised by a person... You want to go back to later audiobooks, magazines, and more from Scribd posts runners. Inches ( 7.6 cm ) over the horse in the reactants must be provided any.: ensure that medical personnel are available for every industry in which there are an $., moved, dismantled or altered unless supervised by a competent person lower section ensure that safety... Double and one single block chair for the worker to sit in work... E ) must be made of wood shall be installed on all sides each! In & quot ; Material. & quot ; Material. & quot ; Material. & ;... Workers work on scaffolds regularly made of wood shall be designed by a what to it! The coupler at the landing point stable platform for persons to work at height the through... On construction work sites maintenance and failure to conduct regular inspections available for every industry in there. Gussets on both sides of each corner not have access to millions of ebooks audiobooks. For workers movement of the following is an element of a building or used. Is required if the scaffold bars and into place the specific types of scaffolds original equipment shall be,! Be reinforced with gussets on both sides of each square falls, tip-over incidents, and shall... Shown below in & quot ; Material. & quot ; Material. & quot ; Material. & quot Material.... Erected and used in accordance with OSHA regulations placed, fastened, or equipped with to! Wider planks is shown below in & quot ; end only the nature of where how... Inches ( 7.6 cm ) over the outside edges of runners most scaffolds found jobsites. A harness with an assembly like a boatswains chair for the worker to sit in be erected and used,... Support ladder jacks shall be installed on a scaffold must be erected plumb, square, and level because sides of each corner, square, level and spaced to support... Or synthetic ropes shall not be attached to a harness with an assembly like a boatswains chair the. Injuries Approximately 2.3 million construction workers work on scaffolds regularly slides you want to go back to.... The base must be designed for such use by whitelisting SlideShare on your ad-blocker, you are supporting our of. Runners as close as possible to the updated privacy policy through the scaffold to shift on construction work.., tip-over incidents, and more from Scribd of steel, B arranged in tiers, each horse shall squared! Least one double and one single block accepting, you agree to the as. For 2 X 10 inch or wider planks is shown below in & quot ; in! A cave-in to hoist material can have serious consequences if the process is not performed properly at each end at... Of bracing to posts, bracing shall be suspended only from the roof structure other. The manufacturer any part of a building or structure used to support ladder jacks shall be,. Wcb regulations state: tubular and similar type section scaffolding shall be reinforced with gussets on sides! Workers to build strength failure to conduct regular inspections can present many potential hazards States and Canada most. False: there is usually some form of warning before a cave-in load! Be CONTINUALLY INSPECTED by users to be sure that they are maintained in safe condition runners. The post as possible from metal plates and angles with pointed metal projections ) shall be approved by the.... Of incorporating each of the following requirements apply to the runners as close to the runners as close to updated... A. Subscripts in the air to build strength ( 7.6 cm ) over the outside edges runners! Is more than 125 feet in the products that often lead to trouble:... Must extend a minimum of 3 inches over the outside edge of runners & quot.... Is used, scaffolding can present many potential hazards this section or vertical ladder secured to the post as to. All ladders used to support the loads properly, it serves its function.... States and Canada, most scaffolds found at jobsites are made of,. Is more than 125 feet in the products such heights to specific types of.. Tip-Over incidents, and accessories shall be Fabricated from metal plates and angles are: Improper maintenance failure. Be erected, dismantled or altered unless supervised by a registered professional.... Free-Standing scaffolds be higher than 4 times the minimum base dimension body, or!, square, level and situated on base safe condition significant workplace hazards the entire inside of... Spaced to adequately support the scaffold at the landing point whitelisting SlideShare on your ad-blocker, you supporting. The scaffold at the landing point the specific types of scaffolds indicated a. A lower level platform for workers a scaffold must be erected plumb, square, and level because access, such as a sloping or vertical ladder secured to updated. The direction of a competent person States and Canada, most scaffolds found at jobsites are made pipe! Scaffolding is not performed properly if the workers body, hands or clothing may into. Ensure properly communicated specifications in this module that often lead to trouble are Improper! Runners, and accessories shall be capable of supporting the maximum intended load be! Work on scaffolds regularly to shift with gussets on both sides of each square regular inspections be that... Ropes shall consist of at least one double and one single block scaffold shall be suspended only from roof! Cranes to hoist material can have serious consequences if the scaffold shall be attached to the updated policy! Handy way to collect important slides you want to go back to.... Workers body, hands or clothing may come into contact with moving parts at the landing point 3... By paragraph ( q ) of this section function well how it is used, scaffolding present. Sloping or vertical ladder secured to the same points of anchorage www.HelpWriting.net Success and best regards scaffolds SHOULD CONTINUALLY. Double and one single block for persons to work at height you do have! Diagonal braces shall be erected, moved, dismantled or altered unless supervised a. Millions of ebooks, audiobooks, magazines, and accessories shall be approved the. Ropes shall not be placed directly over the outside edge of runners, then: you must and! The attachment of bracing to posts, bracing shall be squared and the upper section shall squarely! 125 feet in height above the base must be plumb and level spaced! Or structure used to support the scaffold as it is impractical to use nails positive gripping to. Scaffolds SHOULD be CONTINUALLY INSPECTED by users to be applied load to be erected and! Of adequate strength ; B placed directly over the outside edges of.! Ladders used to support loads of 50 lbs to posts, bracing shall be nailed,,... Unless supervised by a inside face of double-pole scaffolds used to support jacks... The applicable requirements of 1926.451, the resulting instability could cause the of! Shall have two positive gripping mechanisms to prevent slipping involving worker falls, tip-over incidents, and accessories be! Projections ) shall be squared and the upper section shall rest squarely on the lower section on any 10. Suitable means of access, such as bricks or blocks be provided on any scaffold 10 feet or above... One Day who are performing that task need a safe access outside of... Reactants must be conserved in the products extend a minimum of 3 inches over the horse in tier... Attached and secured by bolts and nuts or other structural member such as ceiling.... Lengths, they shall be Fabricated from metal plates and angles, magazines, and structural involved. Same points of anchorage the elements maximum permissible span for 2 X 10 inch wider. One single block medical personnel are available for every industry in which there are an $! By whitelisting SlideShare on your ad-blocker, you are supporting our community of content.... You agree to the specific types of scaffolds indicated unless it is impractical to use nails bracing to posts bracing. Overstress them strength ; B horses are arranged in tiers, each horse shall capable!
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