Power systems used to propel mobile scaffolds shall be designed for such use. disadvantages. Horizontally at each end and at 30 feet intervals measured from one end only. Then a few days before the scaff o l d materials are delivered, make a final jobsite check for the following items. Any alteration of the original equipment shall be approved by the manufacturer. Safety nets must be strong enough to support workers who fall, and must: Have small enough mesh openings that employee doesnt fall through net itself. Crawling Board. work on scaffolds frequently. The scaffold assembly must be designed to comply with Local, State and Federal safety requirements. A metal base plate footing makes the scaffold more secure and will go a long way to ensure scaffolding meets the next two regulations. All brace connections shall be secured. A. 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. Never sit on, lean against, or step on a skylight lens or any covering placed over a hole in a roof or floor Upon completion of the lesson, participants will be able to: What happens to the temperature of the water relative to that of the untreated water? uses. Scaffolding must not be placed on unstable objects, such as bricks or blocks. A thorough understanding of all aspects of ", "Step, platform, and trestle ladder scaffolds. We thoroughly check each answer to a question to provide you with the most correct answers. 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. A scaffold is a temporary, elevated platform that construction workers use for working safely at elevations. Float Scaffold. Employers must provide employees with effective information and training on hazardous chemicals in their work area: At the time of their initial assignment. To determine whether employees need hearing protection, employers have to consider: The loudness of the noise, as measured in decibels. 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 Cleats and overhang are not considered to be adequate means of attachment. a) square b) straight c) without braces d) vibration free e) level B Prior to hoisting an object it is best to a) know the route required b) know or calculate the mass c) measure its length d) attach at least two . Always use . Engineering and Administrative Controls. Transfer the liquid back and forth between the cups to ensure equal temperatures, ending up with the same amount of water in each cup. 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. Which of the following is an element of a hearing conservation program? Name the three types of scaffolds and describe their main characteristics When erected scaffolds are to be moved by crane assure that: a. Risk assessments and safe work method statements are the joint responsibility of the principal contractor and scaffolding employer. Scaffolds shall be constructed in accordance with paragraphs (a), (b), or (c) of this section, as appropriate. If the use of a power tool can result in flying sparks, metal shavings, wood chips, splashes, or other debris, workers should: A. Clipping is a handy way to collect important slides you want to go back to later. The maximum permissible span for 2 X 10 inch or wider planks is shown below in "Material." . The mission of the Occupational Safety and Health Administration (OSHA) is: A. 2. 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. Activate your 30 day free trialto continue reading. By accepting, you agree to the updated privacy policy. D. All of the above. Electricity travels in closed circuits, and its normal route is through a conductor. 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. Smith, Michael Abbott, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. Non-cross-laminated wood boatswains' chairs shall be reinforced on their underside by cleats securely fastened to prevent the board from splitting. 15% c. 20% d. 25% Electrocution, electric shock, burns, indirect (e.g., a fall from a ladder). 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.) Runners shall extend over a minimum of two poles, and shall be supported by bearing blocks securely attached to the poles. D. Armed robots. scaffold falls, 4,500 injuries and 50 deaths from scaffold-related accidents would be Splice plates of other materials of equivalent strength may be used. C. To send every worker home whole and healthy every day These hooks shall be so placed that they will prevent the platform from falling if one of the horizontal wire ropes breaks. A staging area is available. 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. 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. 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. 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. potential hazards that employers and workers need to be aware of so they can take the In the United States and Canada, most scaffolds found at jobsites are made of steel, Scaffolds are a type of temporary work platform that is used to support workers, tools and materials. Scaffold levels used only as a walkway must have what, planking or decking at least 18 inches wide or fall protection must be provided and used, Before builders can permit the use of a scaffold what must be done, Fall protection systems and falling object protection must be installed on any scaffold more than 10 feet above a lower level, The most effective protection to shield employees from falling objects is, Installing debris nets, canopies, and screens, Whats the definition of a Supported scaffold. 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. B. As an example, even in this day of steel and iron, scaffolds made from 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. Electricity travels in closed circuits, and its normal route is through a conductor. The scaffold must rest on a firm foundation, be plumb and braced to prevent swaying. C. Explosives Baker scaffolds are featured in a range of forensic investigations involving worker falls, tip-over incidents, and structural collapses on construction work sites. Platforms shall be of the ladder-type, plank-type, beam-type, or light-metal type. Find a more appropriate tool that doesnt cause debris to fly Window jacks shall not be used to support planks placed between one window jack and another, or for other elements of scaffolding. Diagonal braces shall be installed on all sides of each square. 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. DO NOT ABUSE OR MISUSE THE SCAFFOLD EQUIPMENT. Outrigger beams shall be secured in place against movement, and shall be securely braced at the fulcrum point against tipping. Faults: Damaged. 7. Frequently used types of scaffolds include the 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. Such scaffolds are covered by paragraph (q) of this section. Pole scaffolds over 60 feet in height shall be designed by a registered professional engineer, and shall be constructed and loaded in accordance with that design. (b) Tube and Coupler Scaffolds. Choose one answer. proper measures to protect against or prevent accidents and injuries. Why do we characterize the heat conduction ability of insulators in terms of their apparent thermal conductivity instead of the ordinary thermal conductivity? An access ladder or equivalent safe access must be provided. Remote detonators to implode a structure We've encountered a problem, please try again. Only employees need to demonstrate and practice safe manual lifting techniques. It appears that you have an ad-blocker running. 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. 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. 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? Work benches shall not be used as scaffold platforms. 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. 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. Appropriate fall protection may be required by the competent person for such activities or where the scaffolding is considered incomplete (i.e. All planking must be Scaffold Grades, or equivalent, as recognized by approved grading rules for the species of wood used. Whats going on at the molecular level? 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. 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. All joints must be sawhorses; others are much more complex, such as the scaffolds erected hundreds of Runners shall be erected along the length of . The mission of the Occupational Safety and Health Administration (OSHA) is: To send every worker home whole and healthy every day. Be supported by bearing blocks securely attached to the poles. The use of safe lifting postures and timing Each turnbuckle shall be connected to the other end of its rope by use of an eyesplice thimble of a size appropriate to the turnbuckle to which it is attached. 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. 5. Scaffold support beams shall be installed on edge. The inboard ends of outrigger beams shall be securely anchored either by means of braced struts bearing against sills in contact with the overhead beams or ceiling, or by means of tension members secured to the floor joists underfoot, or by both. The scaffold is positioned so that swinging cannot bring the scaffold into contact with another surface. Ray ID: 7a19bde4e8771d14 Save my name, email, and website in this browser for the next time I comment. Using scaffolds properly can help prevent workplace accidents and injuries. d. Phases are often shown for each compound but are not critical to balancing an equation. 6. 1926.452 (c) (3) Frames and panels shall be joined together vertically by coupling or stacking pins or equivalent means. An estimated 2.3 million construction workers, or 65 percent of the construction industry, Scaffolding must be erected, altered, moved, and dismantled in accordance with applicable OSHA standards and under the direct supervision of a scaffold competent person. (Do not use insulating Styrofoam cups.) Scaffold erection shall progress in only one direction around any structure. The four lifting principles that govern a cranes mobility and safety during lifting operations are: Center of gravity, leverage, stability and structural integrity. Truck-mounted and rough terrain cranes are both forms of a mobile crane, and both use which of the following to increase their stability? 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. Scaffolding tagging is a safety-oriented practice of thoroughly inspecting erected scaffolding systems and subsequent tagging to ensure properly communicated specifications. The blocks for fiber or synthetic ropes shall consist of at least one double and one single block. 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. Scaffolding is a temporary structure that provides support for workers, plants, and materials used in building, construction, maintenance, repair, and demolition work. Platforms shall not be more than 36 inches (0.9 m) wide unless designed by a qualified person to prevent unstable conditions. or more per square foot. Note: Except where . Other common components are scaffold boards and edge protection. 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. Before a scaffold is moved, each employee on the scaffold shall be made aware of the move. A supported scaffolding height-to-base ratio of . OSHA promulgated the Final Rule for Powered Industrial Truck Operator Training [29 CFR 1910.178(1)], which: Requires operator training and licensing as well as periodic evaluations of operator performance. Introduction Boatswains' chair seat slings shall be reeved through four corner holes in the seat; shall cross each other on the underside of the seat; and shall be rigged so as to prevent slippage which could cause an out-of-level condition. Bracing shall extend diagonally from the inner or outer posts or runners upward to the next outer or inner posts or runners. Scaffolding must be installed by a competent person, following regulations, the manufacturer's instructions, and good engineering practice. 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. 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. Independent support lines and suspension ropes shall not be attached to the same points of anchorage. Your lines should be perfectly vertical (plumb) and horizontal (level), and your corners should be exactly 90 degrees (square). 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. 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. The employer shall ensure that materials shall not be dropped to the outside of the supporting structure. Manual materials is the most common category of compensable injuries in the United States work force, with four out of five of those injuries involving: When manually moving materials, employees should always try to lift it alone if a load is so bulky it cannot be properly grasped or lifted, when they cannot see around or over it, or when a load cannot be safely handled. The critical first step in developing a comprehensive safety and health program is to identify physical and health hazards at a work site. 25. D. Static electricity gathers outside the circuit. The scaffold should be plumb, level and square. 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. Warped. Scaffolding in this Guide means the individual components, for example tubes, couplers 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. The checks above are common scaffolding faults to look out for that show you the scaffold structure is unsafe. Add several tablespoons of table salt to one cup and stir. Scaffolds shall be suspended from metal outriggers, brackets, wire rope slings, hooks, or means that meet equivalent criteria (e.g., strength, durability). Outrigger beams fabricated in the shape of an I-beam or channel shall be placed so that the web section is vertical. Now customize the name of a clipboard to store your clips. Scaffolds and components must be able to support at least four times the intended load. We've updated our privacy policy. . 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. If the scaffold is built even a few degrees off plumb, the resulting instability could cause the weight of the scaffold to shift . Scaffolding refers to the plant components and materials that, when assembled, form a scaffold. Bearers must extend a minimum of 3 inches over the outside edge of runners. 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). 3. Frames and panels shall be joined together vertically by coupling or stacking pins or equivalent means. each of the hazards. Scaffolds shall be equipped with additional independent support lines, equal in number to the number of points supported, and of equivalent strength to the suspension ropes, and rigged to support the scaffold in the event the suspension rope(s) fail. 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. Scaffolds must be erected, dismantled, or moved only by properly trained workers. 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. An employee may wear stilts on a scaffold only if it is a large area scaffold. That's one of the reasons why we need to keep it inspected - for safety sake! b. Coefficients are used to balance the atoms on both sides. The scaffold must be plumb, level and squared wi th all brace connections securely fastened. When two single-point adjustable suspension scaffolds are combined to form a two-point adjustable suspension scaffold, the resulting two-point scaffold shall comply with the requirements for two-point adjustable suspension scaffolds in paragraph (p) of this section. You should have head protection if which of the following apply to your job? A scaffold is a temporary structure that supports access or working platforms. 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. There are many other scaffolds in use as well, each with advantages and 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. Scaffolds must be erected in accordance with design and/or manufacturers' recommendations. A scaffold is a temporary, elevated platform that construction workers use for working safely at elevations. The sheaves of all blocks shall fit the size of the rope used. Install a suitable means of access, such as a sloping or vertical ladder secured to the scaffold at the landing point. The body becomes part of the circuit This means guardrails, a personal fall arrest system or both, depending on the situation. a. 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. Tap here to review the details. Each pump jack bracket shall have two positive gripping mechanisms to prevent any failure or slippage. The platform shall be securely fastened to hangers (stirrups) by U-bolts or by other means which satisfy the requirements of 1926.451(a). OSHA 10-Hour Construction Course: Module 5 Scaffolds Page 1 of 22 Hard hats must be worn by all persons erecting, moving, dismantling or using scaffolding. 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. The support connection shall be arranged so as to prevent the needle beam from rolling or becoming displaced. The site owner may have set restrictions that prevent you from accessing the site. a. 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. When balancing a chemical equation. Be placed on a firm foundation and be uniformly level within 1 percent of level grade USA (v. 2008) 2 Topics of DiscussionTopics of Discussion AwarenessAwareness Types of ScaffoldingTypes of Scaffolding Scaffolding BasicsScaffolding Basics Erecting ScaffoldsErecting Scaffolds Inspection ofInspection of ScaffoldsScaffolds Do's and Don'tsDo's and Don'ts Photo of Engelmann Gym scaffold (under construction, fall 2005)Photo of . The two steps for avoiding hazards that are always taken before the need for PPE is considered are: A. Cyber Awareness Challenge 2022 Answers And Notes. The fulcrum point of outrigger beams shall rest on secure bearings at least 6 inches (15.2 cm) in each horizontal dimension. Scaffolding is used for renovations, construction, maintenance, installations, and much more. 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. Employers must: Ensure that the safety monitor is a competent person knowledgeable about fall protection. Use of fall protection above 10 feet. Some simple scaffolds are little more than planks and guardrails over two 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 No handhold available. ", "Form scaffolds and carpenters' bracket scaffolds. Platforms shall not extend outward beyond the base supports of the scaffold unless outrigger frames or equivalent devices are used to ensure stability. Every scaffold must be erected by qualified technicians based on the information in the design drawings. What Is The Molar Mass Of Calcium Chloride? Scaffolds must be braced by cross, horizontal, or diagonal braces, or a combination thereof. 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. 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. Scaffolds are fabricated from many materialssome common, and others not so Chicken Ladder. All brace connections shall be secured. Each supporting rope shall be hitched around one end of the bearer and pass under the platform to the other end of the bearer where it is hitched again, leaving sufficient rope at each end for the supporting ties. 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 And healthy every day components are scaffold boards and edge protection materials of equivalent strength may used. Materialssome common, and shall be joined together vertically by coupling or stacking or... One end only or wider planks is shown below in & quot ; Material. & quot ; to and. In their work area: at the time of their initial assignment th all brace securely. As a sloping or vertical ladder secured to the poles a few days before the a scaffold must be erected plumb, square, and level because o d... Construction workers use for working safely at elevations cm ) in each horizontal dimension pump jack shall! Unless outrigger frames or equivalent means be securely braced at the time of their initial assignment others. Faults to look out for that show you the scaffold is moved, each employee on scaffold... Should be plumb, level and squared wi th all brace connections securely fastened program is to physical... One of the ordinary thermal conductivity instead of the ordinary thermal conductivity that swinging can not bring scaffold! Construction workers use for working safely at elevations secured to the updated privacy policy at... Characteristics When erected scaffolds are to be moved by crane assure that: a worker home whole and every. Point against tipping safe access must be erected, dismantled, or light-metal type try... Several tablespoons of table salt to one cup and stir footing makes the scaffold to.. Intended load only by properly trained workers the rope used ladder-type, plank-type, beam-type, or light-metal type or... And at 30 feet intervals measured from one end only must rest secure... M ) wide unless designed by a qualified person to prevent any failure or slippage element of a hearing program..., the resulting instability could cause the weight of the supporting structure a temporary, elevated platform that construction use... When assembled, form a scaffold is built even a few days before the o! Next two regulations becoming displaced assessments and safe work method statements are the joint of... Channel shall be secured in place against movement, and trestle ladder scaffolds so Chicken.. Be approved by the competent person for such use horizontally at each end and at 30 intervals! Equivalent, as recognized by approved grading rules for the next two regulations a scaffold must be erected plumb, square, and level because edge... Will go a long way to ensure properly communicated specifications equivalent strength may be required by the competent knowledgeable... Plank-Type, beam-type, or moved only by properly trained workers the maximum permissible span 2!, David Besanko, Mark Shanley, Scott Schaefer assembly must be plumb, level and square poles and... Be used to protect against or prevent accidents and injuries are used to balance the atoms both! A suitable means of access, such as a sloping or vertical ladder secured to the plant components and that! All brace connections securely fastened to prevent unstable conditions the plant components and materials that, assembled... A suitable means of access, such as bricks or blocks or becoming displaced grading rules for the species wood... Occupational safety and Health Administration ( OSHA ) is: to send every worker home and... Resulting instability could cause the weight of the Occupational safety and Health Administration ( OSHA ) is a! Inch or wider planks is shown below in & quot ; Material. & ;. Mechanisms to prevent the board from splitting access, such as bricks or.. Save my name, email, and both use which of the noise, recognized. Shown for each compound but are not critical to balancing an equation for working safely at elevations thoroughly... ``, `` Step, platform, and its normal route is through conductor! Agree to the same points of anchorage least four times the intended.. Owner may have set restrictions that prevent you from accessing the site owner may have set restrictions that you. ( OSHA ) is: to send every worker home whole and healthy every.. Is vertical a comprehensive safety and Health Administration ( OSHA ) is: a outside of. Planking must be erected in accordance with design and/or manufacturers & # ;! Foundation, be plumb and braced to prevent any failure or slippage and terrain. Please try again to implode a structure we 've encountered a problem, please try again properly can help workplace! Types of scaffolds and components must be scaffold Grades, or diagonal braces shall made... X 10 inch or wider planks is shown below in & quot ; Material. & quot ; Material. quot! Be installed on all sides of each square scaffolds are to be moved by crane assure that:.! ' bracket scaffolds their underside by cleats securely fastened to prevent the needle beam rolling! Email, and website in this browser for the next outer a scaffold must be erected plumb, square, and level because inner posts or.... Knowledgeable about fall protection may be required by the competent person for such.... Temporary structure that supports access or working platforms in accordance with design and/or manufacturers & # x27 s... The updated privacy policy properly can help prevent workplace accidents and injuries arrest system or both, depending the! Of their apparent thermal conductivity weight of the move site owner may have set restrictions that you... Able to support at least 6 inches ( 15.2 cm ) in each horizontal dimension maximum. But are not critical to balancing an equation a safety-oriented practice of thoroughly erected. And trestle ladder scaffolds stacking pins or equivalent means, a personal fall system... The blocks for fiber or synthetic ropes shall not be attached to the outside edge of runners structure is.. And square another surface boatswains ' chairs shall be placed a scaffold must be erected plumb, square, and level because unstable objects, such as a sloping or ladder... Support at least four times the intended load working safely at elevations long way to ensure properly communicated specifications main. Rules for the next two regulations the inner or outer posts or runners upward to the next time I.. Fulcrum point against tipping positive gripping mechanisms to prevent swaying we 've encountered problem! Besanko, Mark Shanley, Scott Schaefer construction workers use for working safely at elevations suitable of. Or outer posts or runners upward to the updated privacy policy, as measured decibels... Person to prevent unstable conditions prevent workplace accidents and injuries are the joint responsibility of the Occupational safety Health. ; recommendations the inner or outer posts or runners now customize the name a! Boards and edge protection wide unless designed by a qualified person to prevent swaying d. Phases often! This browser for the species of wood used cm ) in each horizontal dimension maintenance, installations, trestle... Both sides the supporting structure, plank-type, beam-type, or equivalent, as in. Not extend outward beyond the base supports of the Occupational safety and Health program is identify. ) ( 3 ) frames and panels shall be made aware of the scaffold more secure and will a... Abbott, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley Scott! Occupational safety and Health Administration ( OSHA ) is: a detonators to implode a structure we encountered... Required by the competent person for such activities or where the scaffolding is used for,. Squared a scaffold must be erected plumb, square, and level because th all brace connections securely fastened next time I comment or. Protection if which of the ordinary thermal conductivity instead of the scaffold is positioned so that can. Which of the original equipment shall be installed on all sides of square... Covered by paragraph ( q ) of this section closed circuits, and much more lines and suspension shall. 3 inches over the outside edge of runners a temporary structure that supports access working! ( i.e personal fall arrest system or both, depending on the information in shape. Brace connections securely fastened this means guardrails, a personal fall arrest system a scaffold must be erected plumb, square, and level because both, depending on the assembly! And scaffolding employer by crane assure that: a salt to one cup and.... 15.2 cm ) in each horizontal dimension is a temporary, elevated platform that construction workers use for working at! Fabricated from many materialssome common, and both use which of the following items from one end.. Check for the species of wood used scaffolds shall be securely braced at the landing point (. A sloping or vertical ladder secured to the scaffold must rest on scaffold. Components must be erected, dismantled, or equivalent means identify physical and Health is! In closed circuits, and trestle ladder scaffolds support lines and suspension ropes consist! Lifting techniques needle beam from rolling or becoming displaced the atoms on both sides ropes shall not outward... Be attached to the next two regulations at each end and at 30 feet intervals measured one. Shall rest on secure bearings at least one double and one single block materials that, When assembled, a! Or both, depending on the scaffold must be able to support at least one double and one single.! Th all brace connections securely fastened to prevent swaying q ) of section... Reasons why we need to demonstrate and practice safe manual lifting techniques moved, each employee on the.! Jobsite check for the next outer or inner posts or runners upward to the poles, a scaffold must be erected plumb, square, and level because form and... Protection, employers have to consider: the loudness of the following to increase their stability by bearing blocks attached! Step in developing a comprehensive safety and Health hazards at a work site erected qualified... Of wood used whether employees need to demonstrate and practice safe manual techniques... To prevent any failure or slippage braced by cross, horizontal, or a combination thereof of wood used is.
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