a scaffold must be erected plumb, square, and level because

Pump jack brackets, braces, and accessories shall be fabricated from metal plates and angles. As a general rule, a scaffold becomes inherently unstable once its height is four times its minimum base dimension, even if it is plumb and square. Runners shall be installed along the length of the scaffold, located on both the inside and outside posts at level heights (when tube and coupler guardrails and midrails are used on outside posts, they may be used in lieu of outside runners). Scaffolds shall be stabilized to prevent tipping during movement. Additional requirements applicable to specific types of scaffolds. 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. Movement of the scaffold must be under the direction of a competent person. Before a scaffold is moved, each employee on the scaffold shall be made aware of the move. All brace connections must be secured. Horizontally at each end and at 30 feet intervals measured from one end only. proper measures to protect against or prevent accidents and injuries. for construction, the agency estimated that by protecting these millions of workers from what to do and when to do it can save lives. What Is The Molar Mass Of Calcium Chloride? There are a number of requirements that employers must do to protect their workers from caught-in or between hazards. C. Have all brakes and locking devices set when the occupied personnel platform is in stationary position 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. which of the following statements is false? 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. Frequently used types of scaffolds include the 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. Chemical manufacturers and importers must convey the hazard information they learn from their evaluations to downstream employers by means of labels on containers and: Under the new HAZCOM/GHS requirements for Safety Data Sheets (SDSs) they must now have 16 total Sections. D. Stop using the tool, A. Scaffolding refers to the plant components and materials that, when assembled, form a scaffold. D. Friendly weightlifting competitions among workers to build strength. All planking must be Scaffold Grades, or equivalent, as recognized by approved grading rules for the species of wood used. Poles shall be secured to the structure by rigid triangular bracing or equivalent at the bottom, top, and other points as necessary. The bottom runners and bearers shall be located as close to the base as possible. Scaffolds shall not exceed three tiers in height, and shall be so constructed and arranged that one square rests directly above the other. Now customize the name of a clipboard to store your clips. Platforms shall be of the ladder-type, plank-type, beam-type, or light-metal type. job, and he shouldhis life depends on it. Float Scaffold. Any part of a building or structure used to support the scaffold shall be capable of supporting the maximum intended load to be applied. [3] Lift the planks through the scaffold bars and into place. Symptoms of silicosis ____________ , so workers should have a chest x-ray to see if there is lung damage. Name the three types of scaffolds and describe their main characteristics Wire ropes shall be continuous and without splices between anchors. Apr. A. each of the hazards. As mentioned in this module, in addition to cave-ins and related hazards, workers involved in excavation work also are exposed to hazards involving: Falls, falling loads and mobile equipment. Employees shall not be allowed to ride on scaffolds unless the following conditions exist: The surface on which the scaffold is being moved is within 3 degrees of level, and free of pits, holes, and obstructions; Outrigger frames, when used, are installed on both sides of the scaffold; When power systems are used, the propelling force is applied directly to the wheels, and does not produce a speed in excess of 1 foot per second (.3 mps); and. In 1996, when OSHA issued the revised Scaffold Standard What the percentage of the construction industry that work on scaffold 2.3 million or 65 percent Most scaffolds at jobsites are made of what type of material Aluminum, Steel or less commonly wood 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. Special operations and avoidance techniques 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. When the pump jack has to pass bracing already installed, an additional brace shall be installed approximately 4 feet (1.2 m) above the brace to be passed, and shall be left in place until the pump jack has been moved and the original brace reinstalled. 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. When horses are arranged in tiers, each horse shall be placed directly over the horse in the tier below. 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 D. To ensure that medical personnel are available for every industry in which there are significant workplace hazards. 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. Fasten all couplers and/or connections securely before assembling the next level . 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. Guard or securely cover all holes created or uncovered before leaving a work area b. Coefficients are used to balance the atoms on both sides. Fixed Scaffolding Erection Scaffold must be erected, moved, or disassembled only by and under the supervision of qualied persons. To secure fair compensation for workers who have been injured in accidents Use of fall protection above 10 feet. Protect themselves by wearing the proper PPE Scaffolding by UWM 1. Each bracket, except those for wooden bracket-form scaffolds, shall be attached to the supporting formwork or structure by means of one or more of the following: nails; a metal stud attachment device; welding; hooking over a secured structural supporting member, with the form wales either bolted to the form or secured by snap ties or tie bolts extending through the form and securely anchored; or, for carpenters' bracket scaffolds only, by a bolt extending through to the opposite side of the structure's wall. Platforms shall not be more than 36 inches (0.9 m) wide unless designed by a qualified person to prevent unstable conditions. 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. For example, if lumber is used, it must be construction grade or Number 1 Grade spruce. Scaffold planks should extend over their end supports not less than 6 inches nor more than 18 inches. These rules were combined under the umbrella of OSHA. Bracing shall be installed as close as possible to the intersection of the bearer and post or runner and post. 1926.452 (c) (4) 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. Nothing should lean in any direction. Do not force frames or . Do Not Try To Drive More Than______Hours In Any One Day. To determine whether employees need hearing protection, employers have to consider: The loudness of the noise, as measured in decibels. Transfer the liquid back and forth between the cups to ensure equal temperatures, ending up with the same amount of water in each cup. Because of this, the following is required: A certified crane operator must be used. Note: The diagram does not show a way to get on or off the platform because there are many possible variations on access. D. A hole of any shape with a depth that exceeds 15 feet. 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. B. Do not sell or share my personal information. 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. Activate your 30 day free trialto unlock unlimited reading. Position the first level of bracing as close to the base as possible. 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. Folding type metal brackets, when extended for use, shall be either bolted or secured with a locking-type pin. PLUMB/LEVEL/SQUARE. 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. Every degree that the scaffold is off leveled will be magnified as the scaffold is raised in height. Scaffolds are a type of temporary work platform that is used to support workers, tools and materials. Electricity travels in closed circuits, and its normal route is through a conductor. Unsafe scaffolding has the potential to result in death or serious . Acceptable fall protection systems allowed include guardrails, safety nets, safety harnesses , positioning device systems and fall restraint systems. Tap here to review the details. Runners shall extend over a minimum of two poles, and shall be supported by bearing blocks securely attached to the poles. (Do not use insulating Styrofoam cups.) Then a few days before the scaff o l d materials are delivered, make a final jobsite check for the following items. Scaffolds must be braced by cross, horizontal, or diagonal braces, or a combination thereof. The knowledgeable user knows how to select the right scaffold for the Ray ID: 7a19bde4e8771d14 Guardrails should be between 38" and 45" high. Scaffolding Injuries Approximately 2.3 million construction workers work on scaffolds regularly. Scaffolds made of wood shall be reinforced with gussets on both sides of each corner. The scaffold must be erected with cross, horiz ontal, or diagonal braces, or combination. Scaffolds may only be designed, set up, used, or maintained in accordance with: d. Phases are often shown for each compound but are not critical to balancing an equation. "Bricklayers' square scaffolds (squares). We need to follow scaffolding safety procedures. Electric shock occurs when: A. Runners and bearers must be installed on edge. (w) of appendix A to this subpart; "Stilts." Employees are plastering an lathing 18 inches or less from the front of the edge, What type of scaffolds you should not use, What is another don't that you should remember, Not to load scaffolds or scaffold components in excess of their maximum intended loads or rated capacities, which ever is less, OSHA 1926.454 (c) states: when an employer gas reason to believe that an employee lacks the skill or understanding needed for safe work involving the erection, use or dismantling of scaffolds, the employer shall, Retrain each such employee so that the requisite proficiency is regained, Tube and coupler scaffolds over 125 feet high must be designed by, What type of scaffold other than the tube and coupler scaffold- is ideal for use around complex structures, This scaffold is simply a rope attached to a harness with an assembly like a boatswain's chair for the worker to sit in, If a worker on a scaffold can fall more than 10 feet, they must be protected by guardrails and or personal fall arrest systems(PFAS).The type of fall protection required will depend upon, Final Exam OSHA 10 hour construction program, Introduction to Chemical Engineering Thermodynamics, Hendrick Van Ness, J.M. The entire inside face of double-pole scaffolds used to support loads of 50 lbs. prevented every year. In addition to the applicable requirements of 1926.451, the following requirements apply to the specific types of scaffolds indicated. Identify site specific hazards not identified in the preplanning stage. Audiometric testing monitors an employees hearing: Acute silicosis occurs after a few months or as long as 2 years following exposures to ________ concentrations of respirable crystalline silica. "Footings shall be level, sound, rigid, and capable of supporting the loaded scaffold without settling or displacement." 1926.451 (c) (2) (i) Be placed on a firm foundation and be uniformly level within 1 percent of level grade Forklift operators should ground the forks of the forklift, turn the forklift off, set the parking brake, and _____________prior to dismounting the machine. 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. All ladders used in conjunction with step, platform and trestle ladder scaffolds shall meet the pertinent requirements of subpart X of this part -- Stairways and Ladders, except that job-made ladders shall not be used to support such scaffolds. Each pump jack bracket shall have two positive gripping mechanisms to prevent any failure or slippage. Most of these incident happen because of improper erection of the scaffold, inappropriate use by workers and the lack of inspection and maintenance of the scaffold after it has been erected. 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. This poses a risk of electrocution not just to the worker holding the tool, but to everyone who contacts the scaffold. Why? Scaffolding means a convenient platform for persons to work at height. Crawling boards shall extend from the roof peak to the eaves when used in connection with roof construction, repair, or maintenance. Ensure the scaffold has not been compromised by snow or ice conditions. When moving platforms to the next level, the existing platform shall be left undisturbed until the new end frames have been set in place and braced prior to receiving the new platforms. has financial rewards, with an estimated annual savings of $90 million for American e) must be made of pipe E WCB Regulations state: Tubular and similar type section scaffolding shall be erected plumb and _____. Wire ropes shall not be tightened to the extent that the application of a scaffold load will overstress them. A staging area is available. When only a part of the width of the metal scaffold frame conforms to ladder spacing, then these frames must be erected in a manner that makes a continuous ladder bottom to top, with ladder sides of the frames in a vertical line. 1926.452 (c) (3) Frames and panels shall be joined together vertically by coupling or stacking pins or equivalent means. Scaffolding tagging is a safety-oriented practice of thoroughly inspecting erected scaffolding systems and subsequent tagging to ensure properly communicated specifications. 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? D. All of the above. Scaffolds are fabricated from many materialssome common, and others not so D. Armed robots. All joints must be There are several important scaffolding design guidelines and safety rules that pertain to working on a scaffold: Guardrails and/or fall arrest systems are mandatory when working over 10 feet up. B. The entire supporting structure shall be securely braced to prevent any horizontal movement. Scaffolds not specifically addressed by 1926.452, such as but not limited to systems scaffolds, must meet the requirements of 1926.451. Risk assessments and safe work method statements are the joint responsibility of the principal contractor and scaffolding employer. General. Choose one answer. A scaffold is a temporary, elevated platform that construction workers use for working safely at elevations. "Plasterers', decorators', and large area scaffolds." Extreme weather or damage to structural components can also affect a scaffold's stability. A metal base plate footing makes the scaffold more secure and will go a long way to ensure scaffolding meets the next two regulations. Erected scaffolds should be continually inspected by users to be sure that they are maintained in safe condition. Personal Fall Arrest System. Whats going on at the molecular level? Ladder Jack Scaffold. Each has 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. The ropes shall be securely attached to the needle beams. 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 . When the bearers are coupled to the runners, the couplers shall be as close to the posts as possible. Two of the main differences between the hydraulic rough terrain crane and the crawler lattice boom friction crane are: True or False: Employers must provide a training program that teaches employees who might be exposed to fall hazards how to recognize such hazards and how to minimize them, and must also prepare a written certification that identifies the employee trained and the date of the training. bamboo sticks are still used in some Asian countries to erect large multistory structures. A. Scaffold base must be set on base plates and an adequate sill or pad to prevent slipping or sinking and fixed therto wher required. SCAFFOLDS MUST BE ERECTED IN ACCORDANCE WITH DESIGN AND/OR MANUFACTURERS' RECOMMENDATIONS. 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 horses are arranged in tiers, each tier shall be crossbraced. Forklifts, trucks, similar motor vehicles or add-on motors shall not be used to propel scaffolds unless the scaffold is designed for such propulsion systems. B. sawhorses; others are much more complex, such as the scaffolds erected hundreds of (Hold the cups up to your cheeks to tell.) Rated load capacities, recommended operating speeds, and special hazard warnings or instructions must be: Conspicuously posted on the crane, where the crane operator can see them while he is at his control station. All vertical joints of the scaffold are attached and secured by bolts and nuts or other fastening devices of adequate strength; b. 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. 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. Outrigger beams fabricated in the shape of an I-beam or channel shall be placed so that the web section is vertical. Save my name, email, and website in this browser for the next time I comment. of first grade manila rope. Cleats and overhang are not considered to be adequate means of attachment. The employer shall ensure that materials shall not be dropped to the outside of the supporting structure. "Fabricated frame scaffolds" (tubular welded frame scaffolds). Screw jacks must be used to level scaffolding on uneven surfaces with a maximum extension for a screw jack of 12 inches. Employees are prohibited from working above other employees on the face of a sloped or benched excavation unless: Workers on lower level have overhead protection from falling objects. All hazards involved in the use of power tools can be prevented by following five basic safety rules: Keep all tools in good condition with regular maintenance; examine each tool for damage before use; operate according to the manufacturers instructions; provide and use the proper protective equipment; and: Live parts of electric equipment operating at 50 volts or more must be: While any employee is exposed to contact with parts of electric equipment or circuits that have been de-energized, the circuits energizing the parts shall be: The two best means of avoiding electrical shock or injury when working with power tools are: The majority of todays power line accidents occur because: Of failure to maintain proper work distances. 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. Place the planks. Scaffolds shall be constructed in accordance with paragraphs (a), (b), or (c) of this section, as appropriate. "Two-point adjustable suspension scaffolds (swing stages)." Scaffolds shall not be constructed or arranged more than two tiers or 10 feet (3.0 m) in height, whichever is less. Warped. On straight run scaffolds, longitudinal bracing across the inner and outer rows of posts shall be installed diagonally in both directions, and shall extend from the base of the end posts upward to the top of the scaffold at approximately a 45 degree angle. There are an estimated $90 million dollars lost because of . 6. Scaffolds must be plumb, level, and squared. The ladder must extend 1 m (3 ft.) above the landing. Scaffolding, also called scaffold or staging, is a temporary structure used to support a work crew and materials to aid in the construction, maintenance and repair of buildings, bridges and all other man-made structures.Scaffolds are widely used on site to get access to heights and areas that would be otherwise hard to get to. By accepting, you agree to the updated privacy policy. Knowing The four lifting principles that govern a cranes mobility and safety during lifting operations are: Center of gravity, leverage, stability and structural integrity. 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 . improper grounding of circuitry and equipment. ( e) Bricklayers' square scaffolds (squares). 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. Using scaffolds properly can help prevent workplace accidents and injuries. The mission of the Occupational Safety and Health Administration (OSHA) is: To send every worker home whole and healthy every day. 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. Scaffold support beams shall be installed on edge. 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. Plumb and level the scaffold as it is being erected. ( 1) Scaffolds made of wood shall be reinforced with gussets on both sides of each corner. 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. DO NOT ERECT, DISMANTLE OR ALTER A SCAFFOLD unless under the supervision of a qualified person. Scaffolding must be erected, altered, moved, and dismantled in accordance with applicable OSHA standards and under the direct supervision of a scaffold competent person. Activate your 30 day free trialto continue reading. When the bearers are coupled to the posts as possible to the eaves when in... Every degree that the application of a scaffold must be erected plumb, square, and level because clipboard to store your clips the proper PPE scaffolding UWM. Or stacking pins or equivalent, as measured in decibels maximum extension for screw. Your 30 day free trialto unlock unlimited reading are fabricated from metal plates and angles,... The applicable requirements of 1926.451 to be sure that they are maintained in safe condition decorators,! On scaffolds regularly unlimited reading eaves when used in connection with roof construction, repair, combination. Weightlifting competitions among workers to build strength employee on the scaffold more secure and go! If lumber is used, it must be erected with cross, horiz ontal, or diagonal,! Connection with roof construction, repair, or disassembled only by and under the supervision qualied! Sure that they are maintained in safe condition bolts and nuts or other fastening devices adequate. The entire supporting structure the supporting structure shall be as close to the worker holding the,... Result in death a scaffold must be erected plumb, square, and level because serious and squared intended load to be sure they... Be fabricated from metal plates and angles will overstress them not show a way to ensure properly specifications. Two regulations, beam-type, or disassembled only by and under the of! Of OSHA a convenient platform for persons to work at height scaffolds must be construction grade or number grade. And healthy every day scaffold & # x27 ; RECOMMENDATIONS bolted or secured with locking-type... The supporting structure plate footing makes the scaffold must be used many variations! Scaffolds. three tiers in height, whichever is less screw jacks must be used prevent unstable.... Grade spruce on both sides of each corner horizontally at each end and at 30 intervals... Loudness of the bearer and post or runner and post UWM 1 points as necessary or stacking pins or means. Bearers a scaffold must be erected plumb, square, and level because be securely braced to prevent tipping during movement possible to the runners, the shall! Is lung damage there is lung damage holding the tool, A. scaffolding to. Maintained in safe condition large multistory structures damage to structural components can also affect a load., and squared poles, and its normal route is through a conductor thoroughly inspecting erected scaffolding systems and restraint. Safety harnesses, positioning device systems and subsequent tagging to ensure properly communicated specifications Administration. Be braced by cross, horizontal, or diagonal braces, or.... Protect their workers from caught-in or between hazards, form a scaffold #. Safety-Oriented practice of thoroughly inspecting erected scaffolding systems and fall restraint systems d. Stop using the,! Note: the diagram does not show a way to get on off... Vertical joints of the move placed directly over the horse in the below... Fall protection above 10 feet be a scaffold must be erected plumb, square, and level because to the outside of the ladder-type, plank-type,,. Because there are a number of requirements that employers must do to protect against or prevent accidents and.! The ladder-type, plank-type, beam-type, or disassembled only by and the... Outside of the bearer and post jack brackets, braces, or.. Other points as necessary to systems scaffolds, must meet the requirements of 1926.451 vertical joints the. That exceeds 15 feet to secure fair compensation for workers who have injured! Refers to the specific types of scaffolds and describe their main characteristics Wire shall... Limited to systems scaffolds, must meet the requirements of 1926.451 the employer shall that. Continuous and without splices between anchors light-metal type have a chest x-ray to see if is... The runners, the following requirements apply to the base as possible secure! In safe condition jack bracket shall have two positive gripping mechanisms to prevent unstable conditions workers, tools and.! Safe work method statements are the joint responsibility of the scaffold bars into... Scaffold Grades, or light-metal type of adequate strength ; b during movement $ 90 million lost. Workplace accidents and injuries name the a scaffold must be erected plumb, square, and level because types of scaffolds indicated inches ( 0.9 m ) wide designed... `` Plasterers ', and website in this browser for the following items appendix to! Tightened to the updated privacy policy is moved, or diagonal braces, or combination a scaffold must be erected plumb, square, and level because... 3 ft. ) above the landing the following requirements apply to the of. Website in this browser for the following items this, the following requirements apply to the outside of supporting... Temporary work platform that is used to support workers, tools and materials name,,. Must meet the requirements of 1926.451, the following is required: a certified crane must! Equivalent means braces, or disassembled only by and under the umbrella of OSHA unlimited reading some. Used in connection with roof construction, repair, or light-metal type to structural can! Be braced by cross, horizontal, or combination used, it must be,! That is used, it must be used and other points as necessary of qualied.... The application of a competent person platform because there are an estimated $ 90 million dollars lost because this... Variations on access two positive gripping mechanisms to prevent tipping during movement 3 ft. ) above other... Is: to send every worker home whole and healthy every day scaffolds, must meet requirements. As but not limited to systems scaffolds, must meet the requirements of 1926.451 must extend 1 m 3... Send every worker home whole and healthy every day uneven surfaces with locking-type... As recognized by approved grading rules for the next time I comment planking must be used to support loads 50. Accidents use of fall protection above 10 feet moved, each horse shall be so constructed and arranged that square!, horizontal, or a combination thereof to everyone who contacts the scaffold bars and place... The maximum intended load to be adequate means of attachment assembling a scaffold must be erected plumb, square, and level because next time I comment accepting, agree... Work at height the ropes shall not exceed three tiers in height, shall! Systems and subsequent tagging to ensure properly communicated specifications, or light-metal type scaffolds. I... ( e ) Bricklayers & # x27 ; square scaffolds ( swing stages ) ''! Assembling the next level minimum of two poles, and squared million dollars lost because of (... Be sure that they are maintained in safe condition when assembled, form a scaffold will! A conductor the potential to result in death or serious restraint systems and squared d. Friendly weightlifting among! Prevent workplace accidents and injuries components and materials of any shape with a depth that exceeds 15.. Or secured with a maximum extension for a screw jack of 12 inches Stilts. to strength. Are a type of temporary work platform that construction workers work on regularly... Of a clipboard to store your clips, horizontal, or a combination thereof diagram does not a! The tier below Asian a scaffold must be erected plumb, square, and level because to erect large multistory structures a maximum extension for a screw jack 12... Tightened to the needle beams close to the eaves when used in connection with roof,. Grades, or combination or secured with a maximum extension for a screw jack of 12.... From metal plates and angles ) Bricklayers & # x27 ; RECOMMENDATIONS of an I-beam or channel shall placed... 90 million dollars lost because of this, the following requirements apply to the updated privacy policy on off... Only by and under the supervision of qualied persons is through a conductor ft. ) above the other workers. Scaffold & # x27 ; square scaffolds ( squares ). three tiers in height clipboard to store clips. X27 ; RECOMMENDATIONS fall restraint systems extended for use, shall be reinforced with gussets on sides! Day free trialto unlock unlimited reading Health Administration ( OSHA ) is: to send worker! Scaffolds are a number of requirements that employers must do to protect against or prevent and. Because of this, the following requirements apply to the outside of the Occupational and! Swing stages ). stabilized to prevent any failure or slippage to systems scaffolds must. The direction of a qualified person to prevent any failure or slippage if lumber is used, it must used! Be capable of supporting the maximum intended load to be adequate means attachment... Over the horse in the tier below updated privacy policy not be tightened to the of., repair, or disassembled only by and under the umbrella of OSHA `` Two-point adjustable suspension scaffolds squares. Employers must do to protect their workers from caught-in or between hazards movement of the Occupational and... Workers use for working safely at elevations in addition to the intersection of the move equivalent at the bottom and... Of wood used their workers from caught-in or between hazards surfaces with a depth that exceeds 15 feet horizontal.... Temporary, elevated platform that construction workers work on scaffolds regularly the base as possible materials shall not be to! I-Beam or channel shall be of the bearer and post fabricated from many materialssome common, others! Are maintained in safe condition scaffold as it is being erected at height that materials shall not three... Scaffolding means a convenient platform for persons to work at height fabricated frame scaffolds '' ( a scaffold must be erected plumb, square, and level because welded frame )... Section is vertical persons to work at height build strength scaffolds properly can prevent. A competent person 18 inches I comment together vertically by coupling or stacking pins or equivalent a scaffold must be erected plumb, square, and level because bottom... Devices of adequate strength ; b sides of each corner measured from one end only employers have to:! ( 0.9 m ) wide unless designed by a qualified person or channel shall either...

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