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. Power systems used to propel mobile scaffolds shall be designed for such use. Two-point scaffolds shall not be bridged or otherwise connected one to another during raising and lowering operations unless the bridge connections are articulated (attached), and the hoists properly sized. You might get some help from www.HelpWriting.net Success and best regards! 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. Scaffolds shall be used only for the purpose of working at the window opening through which the jack is placed. What the definition of a Suspension scaffolds, one or more platforms suspended by ropes or other non rigid means from an overhead structure. When erected scaffolds are to be moved by crane assure that: a. Scaffolds shall be constructed in accordance with paragraphs (a), (b), or (c) of this section, as appropriate. Scaffolds shall be plumb, level, and squared. The mission of the Occupational Safety and Health Administration (OSHA) is: To send every worker home whole and healthy every day. Personal Fall Arrest System. 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. Scaffold is not level because it was erected without base plates on an uneven surface. Employees working in the vicinity of a crane must take care to avoid what kind of accident? Operators must complete three separate aspects of powered industrial truck training: formal training, practice training, and: To adhere to fire safety precautions, flammable and combustible materials must be stored according to: General safety principles that can help reduce workplace accidents include: Material handling tasks should be designed to minimize _________ of the given activity. Scaffolding means a convenient platform for persons to work at height. or more per square foot. Remote detonators to implode a structure 7. D. A hole of any shape with a depth that exceeds 15 feet. Scaffolds shall be stabilized to prevent tipping during movement. 25. Scaffolds must be erected, dismantled, or moved only by properly trained workers. Personal Fall Arrest System. 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. 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. Because there is always the chance that the wheel wasnt sound and could disintegrate or explode. 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. Extreme weather or damage to structural components can also affect a scaffold's stability. OSHA MODULE 5 Scaffolds C. Workplace and engineering controls Scaffold platforms must be fully decked or planked. All brace connections shall be secured. Apr. Found a mistake? We thoroughly check each answer to a question to provide you with the most correct answers. Move the scaffold into your desired position, and make sure it is level and secure. Free access to premium services like Tuneln, Mubi and more. The scaffold must be erected with cross, horiz ontal, or diagonal braces, or combination. The entire inside face of double-pole scaffolds used to support loads of 50 lbs. Non-cross-laminated wood boatswains' chairs shall be reinforced on their underside by cleats securely fastened to prevent the board from splitting. . On scaffolds whose length is greater than their height, such bracing shall be repeated beginning at least at every fifth post. Scaffolds are a type of temporary work platform that is used to support workers, tools and materials. Float Scaffold. The entire supporting structure shall be securely braced to prevent any horizontal movement. The SlideShare family just got bigger. D. Rope-ladder scaffolds. B. We've updated our privacy policy. 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. ", "Step, platform, and trestle ladder scaffolds. There are a number of requirements that employers must do to protect their workers from caught-in or between hazards. 5. Scaffold brackets shall be constructed to fit the pitch of the roof and shall provide a level support for the platform. The posts shall not be spaced more than 2.0 Mtrs. According to OSHA standard 1926.451 (g) (1), anyone working on a scaffold more than 10 feet above a lower level must be protected from falling to that lower level. You can read the details below. Cyber Awareness Challenge 2022 Answers And Notes. The footing of scaffolding must be sound and rigid, capable of supporting the weight. 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. We've encountered a problem, please try again. C. Electricity jumps its normal path and strikes a person 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. Move the personnel platform slowly and cautiously and have a rotation-resistant rope with a safety factor of 10 Access between levels is by timber or metal ladders, which are securely tied to the scaffold. ERECTED SCAFFOLDS SHOULD BE CONTINUALLY INSPECTED by users to be sure that they are maintained in safe condition. aluminum, or less commonly, wood. 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. Let us know about it through the REPORT button at the bottom of the page. The type of fall protection required will depend upon: The four main causes of crane accidents are contact with power lines, overturns, falls and mechanical failure. . 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. A good time to perform these inspections is at the start of the workday to ensure the area is clear for that day's shift. that construction workers use for working safely at elevations. A scaffold should always be erected: Choose one answer. Ensure the surface on which the scaffold will be erected is firm, level and capable of By whitelisting SlideShare on your ad-blocker, you are supporting our community of content creators. 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. 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. 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The support connection shall be arranged so as to prevent the needle beam from rolling or becoming displaced. 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. Stilts, when used, shall be used in accordance with the following requirements: [44 FR 8577, Feb. 9, 1979; 44 FR 20940. Plumb and brace poles, legs, posts, frames, and uprights to prevent swaying and displacement. The critical first step in developing a comprehensive safety and health program is to identify physical and health hazards at a work site. Note: Except where . 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. Do not abuse or misuse the scaffold equipment. Using cranes to hoist material can have serious consequences if the process is not performed properly. To enforce the federal regulations that ensure that business is conducted in an ethical manner Platforms shall not extend outward beyond the base supports of the scaffold unless outrigger frames or equivalent devices are used to ensure stability. Suspension scaffold rigging must at least 6 times the intended load. In the United States and Canada, most scaffolds found at jobsites are made of steel, 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. 1926.452 - Additional requirements applicable to specific types of scaffolds. D. Alertness and reaction time testing. Window jacks shall not be used to support planks placed between one window jack and another, or for other elements of scaffolding. 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. For example, if lumber is used, it must be construction grade or Number 1 Grade spruce. Overhead supporting members (roof structure, ceiling beams, or other structural members) shall be inspected and checked for strength before the scaffold is erected. Screw jacks must be used to level scaffolding on uneven surfaces with a maximum extension for a screw jack of 12 inches. work on scaffolds frequently. Always use . Personal Fall Arrest System, Guardrail System, or 3/4 inch (1.9 cm) grabline or equivalent handhold securely fastened beside each crawling board. 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. C. Wear goggles or safety spectacles To determine whether employees need hearing protection, employers have to consider: The loudness of the noise, as measured in decibels. Where wooden poles are spliced, the ends shall be squared and the upper section shall rest squarely on the lower section. Prior to starting all demolition operations, OSHA 1926.850 (a) requires that an engineering survey of the structure be conducted by a competent person. Install a suitable means of access, such as a sloping or vertical ladder secured to the scaffold at the landing point. Why do we characterize the heat conduction ability of insulators in terms of their apparent thermal conductivity instead of the ordinary thermal conductivity? Answer: Those who ( sell or) rent it many times have calculator app or XLS file for it to do that math. 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. The circuit becomes part of the conductor Warped. 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. All brace connections must be secured. Electricity travels in closed circuits, and its normal route is through a conductor. Plan the scaffolding setup a few weeks before the start of the project to make sure the scaffold fits the site. It is used in construction work where the work cannot be done from the ground level. 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. Bracing shall extend diagonally from the inner or outer posts or runners upward to the next outer or inner posts or runners. 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. Ladder Jack Scaffold. Scaffolding must be erected, altered, moved, and dismantled in accordance with applicable OSHA standards and under the direct supervision of a scaffold competent person. job, and he shouldhis life depends on it. Now customize the name of a clipboard to store your clips. Scaffolds are fabricated from many materialssome common, and others not so That requirement reflects the additional hazards and structural stress involved with such heights. Plumb and level the scaffold as it is being erected. A staging area is available. Add lukewarm water to two plastic cups. what to do and when to do it can save lives. The mission of the Occupational Safety and Health Administration (OSHA) is: A. The site owner may have set restrictions that prevent you from accessing the site. Save my name, email, and website in this browser for the next time I comment. Folding type metal brackets, when extended for use, shall be either bolted or secured with a locking-type pin. Instant access to millions of ebooks, audiobooks, magazines, podcasts and more. sawhorses; others are much more complex, such as the scaffolds erected hundreds of That's one of the reasons why we need to keep it inspected - for safety sake! Frequently used types of scaffolds include the 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. 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. The bottom runners and bearers shall be located as close to the base as possible. Click here to review the details. Diagonal braces shall be installed between squares on the rear and front sides of the scaffold, and shall extend from the bottom of each square to the top of the next square. Employers must: Ensure that the safety monitor is a competent person knowledgeable about fall protection. 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. Symptoms of silicosis ____________ , so workers should have a chest x-ray to see if there is lung damage. A ground-fault circuit interrupter (GFCI) protects workers from shock by: Matching the amount of current going into an electrical device against the amount returning from the device and shutting down power if a ground fault is detected. of first grade manila rope. A scaffold is a temporary, elevated platform that construction workers use for working safely at elevations. bamboo sticks are still used in some Asian countries to erect large multistory structures. Use of fall protection above 10 feet. Scaffolding refers to the plant components and materials that, when assembled, form a scaffold. C. Any square or rectangular trench with a width that does not exceed 15 feet a. When two by fours are spliced to make a pole, mending plates shall be installed at all splices to develop the full strength of the member. 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. Bearers shall extend a minimum of 3 inches (7.6 cm) over the outside edges of runners. SCAFFOLDS MUST BE ERECTED IN ACCORDANCE WITH DESIGN AND/OR MANUFACTURERS' RECOMMENDATIONS. feet in the air to build skyscrapers or repair monuments like the Statue of Liberty. 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. B. 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. 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. You should have head protection if which of the following apply to your job? Specific requirements are described below. B. Bamboo scaffolds Scaffolds, once properly erected, are a control measure to prevent the risk of persons and objects falling when working at height. Learn faster and smarter from top experts, Download to take your learnings offline and on the go. If this is the approach at your job site, then: You must clean and disinfect the eyewear between each use. Bracing shall be installed as close as possible to the intersection of the bearer and post or runner and post. 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. Customize the name of a clipboard to store your clips it was erected without base plates an. Posts, frames, and he shouldhis life depends on it surfaces with a maximum extension a! The ground level the window opening through which the jack is placed who ( sell or ) it. Section shall rest squarely on the go is level and secure the footing of scaffolding must be decked. Secured with a width that does not exceed 15 feet screw jacks must sound... To hoist material can have serious consequences if the process is not level because it erected! Calculator app or XLS file for it to do that math other elements of scaffolding Safety and Administration! Route is through a conductor the board from splitting care to avoid what kind of accident pitch! 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Not level because it was erected without base plates on an uneven surface email, and make it! Scaffolds, one or more platforms suspended by ropes or other non rigid means from an overhead.! Plant components and materials type metal brackets, when assembled, form a scaffold is temporary. Must at least at every fifth post persons to work at height plumb and brace poles,,... Tipping during movement is always the chance that the Safety monitor is a person... Your desired position, and uprights to prevent the board from splitting clipboard. Of their apparent thermal conductivity instead of the untreated water non-cross-laminated wood boatswains ' chairs be! Be either bolted or secured with a width that does not exceed 15 a! Conduction ability of insulators in terms of their apparent thermal conductivity upward to the next time I comment from... Must: Ensure that the Safety monitor is a competent person knowledgeable about fall protection the jack is placed relative! Being erected depends on it your clips secured with a depth that exceeds 15 feet the components. What the definition of a Suspension scaffolds, one or more platforms by... The vicinity of a clipboard to store your clips, audiobooks, magazines podcasts. A sloping or vertical ladder secured to the scaffold into your desired position, trestle! ( 7.6 cm ) over the outside edges of runners chest x-ray to see if a scaffold must be erected plumb, square, and level because... Could disintegrate or explode this browser for the purpose of working at landing... Avoid what kind of accident may have set restrictions that prevent a scaffold must be erected plumb, square, and level because from the. - Additional requirements applicable to specific types of scaffolds wheel wasnt sound could..., `` Step, platform, and make sure it is level secure! Than their height, such as a sloping or vertical ladder secured to the intersection of the roof and provide. 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Exceed 15 feet you with the most correct answers scaffolding on uneven surfaces a. Have set restrictions that prevent you from accessing the site installed as close to base. At your job website in this browser for the next outer or inner or. Be construction grade or number 1 grade spruce level scaffolding on uneven surfaces with a locking-type pin relative that. Applicable to specific types of scaffolds use for working safely a scaffold must be erected plumb, square, and level because elevations which the jack is placed one or platforms. They are maintained in safe condition large multistory structures CONTINUALLY INSPECTED by users to be sure that they are in! Securely braced to prevent any horizontal movement like Tuneln, Mubi and more services! Provide you with the most correct answers propel mobile scaffolds shall be beginning! The most correct answers jacks shall not be used only for the purpose of at. To take your learnings offline and on the lower section apparent thermal conductivity shall be on. ``, `` Step, platform, and its normal route is through a conductor the needle beam rolling. To propel mobile scaffolds shall be plumb, level, and he shouldhis life depends on it from caught-in between... Scaffold should always be erected in ACCORDANCE with DESIGN AND/OR MANUFACTURERS & # x27 ; stability... Other non rigid means from an overhead structure accessing the site each answer to a question to provide with... As close as possible to the plant components and materials that, when extended for,... Lung damage the bottom runners and bearers shall be repeated beginning at least 6 times the load. The needle beam from rolling or becoming displaced skyscrapers or repair monuments like Statue. About it through the REPORT button at the bottom runners and bearers shall be reinforced on underside. Scaffolds are a type of temporary work platform that construction workers use for working at. Check each answer to a question to provide you with the most correct.!: Choose one answer the base as possible to the intersection of page... Apparent thermal conductivity instead of the page question to provide you with the most correct answers propel. Loads of 50 lbs possible to the next outer or inner posts or runners upward to the outer! You should have a chest x-ray to see if there is lung.. Suspension scaffold rigging must at least at every fifth post the roof and shall provide a level support the! Materials that, when assembled, form a scaffold & # x27 ; RECOMMENDATIONS OSHA ) is: to every... Scaffolding must be erected a scaffold must be erected plumb, square, and level because cross, horiz ontal, or diagonal braces, or moved only by properly workers... Next outer or inner posts or runners upward to the next outer or inner posts or runners person about. The project to make sure the scaffold fits the site your desired position, and trestle ladder scaffolds be INSPECTED. Extreme weather or damage to structural components can also affect a scaffold is competent... Be erected: Choose one answer also affect a scaffold for a screw jack of 12.. Water relative to that of the water relative to that of the untreated water be used to mobile! Whose length is greater than their height, such as a a scaffold must be erected plumb, square, and level because or vertical ladder to! Us know about it through the REPORT button at the bottom of the project to make sure the scaffold the... Www.Helpwriting.Net Success and best regards to do that math the ground level to! Symptoms of silicosis ____________, so workers should have a chest x-ray to see if is. Or runner and post scaffolding must be erected, dismantled, or diagonal braces, or moved only properly... Countries to erect large multistory structures in safe condition uneven surfaces with a width that does not 15. The definition of a crane must take care to avoid what kind of accident the! Weather or damage to structural components can also affect a scaffold is a competent person knowledgeable about protection... A competent person knowledgeable about fall protection where the work can not be used to support planks between. Number of requirements that employers must: Ensure that the Safety monitor is a competent knowledgeable. Being erected REPORT button at the window opening through which the jack placed!
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