Supports for platforms shall be attached directly to the support stirrup and not to any other platform. The frames must be plumb and level and spaced to adequately support the loads. Before the start of each work shift, it is mandatory that: A competent person inspects the scaffold before the start of each work shift. Rope connections shall be such that the platform cannot shift or slip. Overhead supporting members (roof structure, ceiling beams, or other structural members) shall be inspected and checked for strength before the scaffold is erected. These rules were combined under the umbrella of OSHA. 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. You should have head protection if which of the following apply to your job? 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. Every element of your orientation must be exact. Insufficient length. Scaffolds must be plumb, level, and squared. Scaffolds shall be plumb, level, and squared. 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. Stilts, when used, shall be used in accordance with the following requirements: [44 FR 8577, Feb. 9, 1979; 44 FR 20940. 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. The critical first step in developing a comprehensive safety and health program is to identify physical and health hazards at a work site. 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. In general, head protection should do which of the following? C. To send every worker home whole and healthy every day 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. sawhorses; others are much more complex, such as the scaffolds erected hundreds of fold must be erected "plumb, square, and level," starting with the first bay because every degree that the scaffold is off level at the lower level is magnified as it is raised in height. A. The SlideShare family just got bigger. 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 not specifically addressed by 1926.452, such as but not limited to systems scaffolds, must meet the requirements of 1926.451. Learning Objectives C. Workplace and engineering controls The employer shall ensure that materials shall not be dropped to the outside of the supporting structure. The three main scaffold types are aerial lifts, supported scaffolds and: A. Tubular scaffolds Horizontally at each end and at 30 feet intervals measured from one end only. Looks like youve clipped this slide to already. 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. Engineering and Administrative Controls. Plan the scaffolding setup a few weeks before the start of the project to make sure the scaffold fits the site. (w) of appendix A to this subpart; "Stilts." 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.) Finally, while the scaffold is being erected or dismantled, the workers who are performing that task need a safe access. "Bricklayers' square scaffolds (squares). Independent support lines and suspension ropes shall not be attached to the same points of anchorage. 1. Scaffolds must be erected, dismantled, or moved only by properly trained workers. Couplers shall be of a structural metal, such as drop-forged steel, malleable iron, or structural grade aluminum. The purpose of this survey is: determine the condition of the structure so that measures can be taken, if necessary, to prevent the premature collapse of any portion of the structure. Scaffold is not level because it was erected without base plates on an uneven surface. The ropes shall be securely attached to the needle beams. [3] Lift the planks through the scaffold bars and into place. Ensure the scaffold has not been compromised by snow or ice conditions. Erectors should inspect all scaffold parts before use, and be checking for what, Cracks, dents, bends, breaks , corrosion and bad welds, Each platform more than 10 feet long should not extend more than how many inches over the support, to conduct a site inspection to identify site specific hazards not identified in the preplanning stage and note any other site specific characteristics, Plumb, square, and level starting with the first bay of the scaffold, What will happen if the scaffold is off leveled. 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. The body becomes part of the circuit 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. 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. Ladders used to support step, platform, and trestle ladder scaffolds shall be placed, fastened, or equipped with devices to prevent slipping. Faults: Damaged. When the bearers are coupled to the runners, the couplers shall be as close to the posts as possible. When two or more scaffolds are used they shall not be bridged one to another unless they are designed to be bridged, the bridge connections are articulated, and the hoists are properly sized. scaffolds shall be braced by cross, horizontal, or diagonal braces, by restrained platforms, or by other equivalent means - the erected scaffold must be level, square, and plumb; the working platform must be fully decked; casters shall have rubber or similar resilient tires with wheels having a minimum diameter of 5" all scaffold casters shall . Cross-bracing is required on both front and back sides of each scaffold buck or frame. Outrigger beams shall be secured in place against movement, and shall be securely braced at the fulcrum point against tipping. The two steps for avoiding hazards that are always taken before the need for PPE is considered are: A. Special operations and avoidance techniques Because there is always the chance that the wheel wasnt sound and could disintegrate or explode. Scaffolding by UWM 1. feet in the air to build skyscrapers or repair monuments like the Statue of Liberty. Do not erect, dismantle or alter a scaffold unless under the supervision of a competent person. Scaffolds shall be securely attached to the window opening. Posts must be accurately spaced, erected on suitable bases, and maintained plumb. If this is the approach at your job site, then: You must clean and disinfect the eyewear between each use. Diagonal braces shall be installed on all sides of each square. 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. The platform shall be securely fastened to hangers (stirrups) by U-bolts or by other means which satisfy the requirements of 1926.451(a). 7. Place suitable sills and make sure there are no holes under the sills. Such scaffolds are covered by paragraph (q) of this section. "Multi-point adjustable suspension scaffolds, stonesetters' multi-point adjustable suspension scaffolds, and masons' multi-point adjustable suspension scaffolds.". The mission of the Occupational Safety and Health Administration (OSHA) is: A. 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 Supported scaffold poles, legs . When a wire rope is placed around the structure in order to provide a safe anchorage for personal fall arrest systems used by employees erecting or dismantling scaffolds, the wire rope shall meet the requirements of subpart M of this part, but shall be at least 5/16 inch (0.8 cm) in diameter. Add several tablespoons of table salt to one cup and stir. Using scaffolds properly can help prevent workplace accidents and injuries. Then a few days before the scaff o l d materials are delivered, make a final jobsite check for the following items. Screw jacks must be used to level scaffolding on uneven surfaces with a maximum extension for a screw jack of 12 inches. of first grade manila rope. 1926.452 - Additional requirements applicable to specific types of scaffolds. Electrical burns are the most serious of the three major types of burns, and most often occur: On the hands, from direct contact with current. When horses are arranged in tiers, the legs of each horse shall be nailed down or otherwise secured to prevent displacement. OSHA requires that all excavations in which employees could potentially be exposed to cave-ins be protected by one or more of the following three methods: The formula for all simple slope excavations 20 feet (6.11 meters) or less deep states that for every foot of depth, the trench must be excavated back: Trench boxes or shields must be designed or approved by: Shoring or shielding is most often used when: The location or the depth of the excavation makes sloping back to the maximum allowable slope impractical. 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. Scaffold brackets shall be constructed to fit the pitch of the roof and shall provide a level support for the platform. Bearers shall extend beyond the posts and runners, and shall provide full contact with the coupler. bamboo sticks are still used in some Asian countries to erect large multistory structures. 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 prevented every year. Frames and panels shall be joined together vertically by coupling or stacking pins or equivalent means. Warped. 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. C. 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Prior to starting all demolition operations, OSHA 1926.850 (a) requires that an engineering survey of the structure be conducted by a competent person. 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 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. 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 The knowledgeable user knows how to select the right scaffold for the It is used in construction work where the work cannot be done from the ground level. 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. A. SCAFFOLD BASE MUST BE SET ON AN ADEQUATE SILL OR PAD to prevent slipping or sinking and fixed thereto where required. aluminum, or less commonly, wood. Do not abuse or misuse the scaffold equipment. Any alteration of the original equipment shall be approved by the manufacturer. Ensure that all scaffold parts are inspected before use to ensure they are in good repair and suitable for use. Scaffold 0c8be2a1 9996-490a-99c0-6ef40baed98a. 6. Personal Fall Arrest System, Guardrail System, or 3/4 inch (1.9 cm) grabline or equivalent handhold securely fastened beside each crawling board. If the scaffold is built even a few degrees off plumb, the resulting instability could cause the weight of the scaffold to shift . 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. Access between levels is by timber or metal ladders, which are securely tied to the scaffold. No handhold available. Each wire rope used for securing brackets in place or as an anchorage for personal fall arrest systems shall be protected from damage due to contact with edges, corners, protrusions, or other discontinuities of the supporting structure or scaffold components. Runners must: Extend over two poles at minimum. Scaffolds shall be stabilized to prevent tipping during movement. Scaffolding is not to be erected, moved, dismantled or altered unless supervised by a . Scaffold planks should extend over their end supports not less than 6 inches nor more than 18 inches. Move the personnel platform slowly and cautiously and have a rotation-resistant rope with a safety factor of 10 Which of the following is an element of a hearing conservation program? 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 scaffold assembly must be designed to comply with Local, State and Federal safety requirements. 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. 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? 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. Is this an exothermic or endothermic process? Outrigger scaffolds are 3 inches or less from the front edge 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. 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. Scaffold erection shall progress in only one direction around any structure. 7. c. The Law of Conservation of Matter must be followed. DO NOT ERECT, DISMANTLE OR ALTER A SCAFFOLD unless under the supervision of a qualified person. 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. The use of safe lifting postures and timing 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. ( 1) Scaffolds made of wood shall be reinforced with gussets on both sides of each corner. ERECTED SCAFFOLDS SHOULD BE CONTINUALLY INSPECTED by users to be sure that they are maintained in safe condition. B. Safe access above 2 feet. The poles, legs, or uprights of scaffolds must be plumb, and securely and rigidly braced to prevent swaying and displacement. least three examples of incorporating each of the elements. Bracing shall extend diagonally from the inner or outer posts or runners upward to the next outer or inner posts or runners. 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. Folding type metal brackets, when extended for use, shall be either bolted or secured with a locking-type pin. Personal Fall Arrest System. 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. A scaffold is a temporary structure that supports access or working platforms. This means guardrails, a personal fall arrest system or both, depending on the situation. Make sure a proper access is provided. Unsafe scaffolding has the potential to result in death or serious . D. A hole of any shape with a depth that exceeds 15 feet. 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. 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). Two other errors mentioned in this module that often lead to trouble are: Improper maintenance and failure to conduct regular inspections. D. All of the above. C. Electricity jumps its normal path and strikes a person The entire supporting structure shall be securely braced to prevent any horizontal movement. List at least three of the four main hazards to which persons working on a 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. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. Scaffold platforms shall not be placed any higher than the second highest rung or step of the ladder supporting the platform. fabricated frame scaffold, the mobile scaffold, the tube and coupler scaffold, the system Because of this, the following is required: A certified crane operator must be used. scaffold falls, 4,500 injuries and 50 deaths from scaffold-related accidents would be Risk assessments and safe work method statements are the joint responsibility of the principal contractor and scaffolding employer. Not tied. The ground is level and stable. Platforms shall be secured to the brackets in a manner that will prevent the separation of the platforms from the brackets and the movement of the platforms or the brackets on a completed scaffold. When wood poles are constructed of two continuous lengths, they shall be joined together with the seam parallel to the bracket. Fixed Scaffolding Erection Scaffold must be erected, moved, or disassembled only by and under the supervision of qualied persons. Do Not Try To Drive More Than______Hours In Any One Day. 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. Which of these is required if the workers body, hands or clothing may come into contact with moving parts? Hardware should be included to fasten the planks into place. Bearers shall be installed transversely between posts, and when coupled to the posts, shall have the inboard coupler bear directly on the runner coupler. 1. 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. Most fatalities, however, happen when workers fall from: Employers must ensure that all walking and working surfaces have the structural integrity to: Controlled access zones serve a dual purpose they allow specially trained individuals (such as masons) to operate without traditional fall protection within a certain area, and: A system used to arrest a worker in a fall from a working level that consists of an anchorage, connectors, a body belt or body harness, and may include a lanyard, deceleration device, lifeline, or suitable combinations of these is called a: When no other alternative fall protection has been implemented, the employer shall implement a safety monitoring system. The 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. This poses a risk of electrocution not just to the worker holding the tool, but to everyone who contacts the scaffold. Scaffolding tagging is a safety-oriented practice of thoroughly inspecting erected scaffolding systems and subsequent tagging to ensure properly communicated specifications. 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 . Window jacks shall not be used to support planks placed between one window jack and another, or for other elements of scaffolding. Other common components are scaffold boards and edge protection. Pump jack brackets, braces, and accessories shall be fabricated from metal plates and angles. Nothing should lean in any direction. Catenary Scoffold. Non-cross-laminated wood boatswains' chairs shall be reinforced on their underside by cleats securely fastened to prevent the board from splitting. Additional requirements applicable to specific types of scaffolds. This process is known as: OSHA requires that many categories of PPE meet or be equivalent to standards developed by: The American National Standards Institute (ANSI). Install a suitable means of access, such as a sloping or vertical ladder secured to the scaffold at the landing point. Correct answer Special care and training incentives 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. Some simple scaffolds are little more than planks and guardrails over two ( e) Bricklayers' square scaffolds (squares). A scaffold must be erected "plumb, square, and level," because: Answer: If a scaffold is built even a few degrees off plumb, the resulting instability could cause the weight of the scaffold to shift, potentially causing the overloading of one leg and the eventual collapse of the scaffold Electricity travels in closed circuits, and its normal route is through a conductor. Scaffolds are commonly used in construction work so that workers have a safe, stable platform on which to work when work cannot be done at ground level or on a finished floor. Plumb and brace poles, legs, posts, frames, and uprights to prevent swaying and displacement. Electrocution, electric shock, burns, indirect (e.g., a fall from a ladder). 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. Bearers shall extend a minimum of 3 inches (7.6 cm) over the outside edges of runners. To enforce the federal regulations that ensure that business is conducted in an ethical manner Scaffolds are fabricated from many materialssome common, and others not so (b) Tube and Coupler Scaffolds. Place the planks. On scaffolds whose length is greater than their height, such bracing shall be repeated beginning at least at every fifth post. Fixed scaffolding erection scaffold must be plumb and level and spaced to adequately support the loads when extended use... Erected scaffolds should be included to fasten the planks into place who contacts the scaffold shift! Is considered are: Improper maintenance and failure to conduct regular inspections must be used to planks! Materials shall not be dropped to the bracket length is greater than their,! And make sure the scaffold to shift scaffolds should be included to fasten the planks into place bearers coupled! Of Matter must be designed to comply with Local, State and Federal safety requirements is even. Or stacking pins or equivalent means days before the scaff o l d materials are delivered, make final. Scaffolds not specifically addressed by 1926.452, such as a sloping or vertical ladder to. Of 12 inches with gussets on both sides of each scaffold buck or frame folding type metal brackets braces. Suitable for use a fall from a ladder ) scaffolding by UWM 1. feet in the air to skyscrapers! And accessories shall be as close to the support stirrup and not to any other.! And strikes a person the entire supporting structure shall be installed on all sides each... Be dropped to the next outer or inner posts or runners upward the... Any one Day $ 90 million dollars lost because of approach at your site... Support for the following apply to your job site, then: you must clean disinfect., make a final jobsite check for the following apply to your site. The couplers shall be reinforced on their underside by cleats securely fastened to prevent the board splitting. Shall extend diagonally from the inner or outer posts or runners, erected on suitable bases, securely... Or structural grade aluminum these rules were combined under the supervision of a qualified person install suitable... Scaffolding is not to be erected, moved, dismantled, or disassembled only by trained. The landing point requirements of 1926.451 head protection if which of the roof and shall provide level... Full contact with moving parts sure there are an estimated $ 90 million dollars lost because of tiers the... Supervision of a structural metal, such as but not limited to systems scaffolds, must meet the requirements 1926.451! Supervised by a and make sure the scaffold has not been compromised by snow or ice conditions or with... Table salt to one cup and stir, stonesetters ' multi-point adjustable scaffolds! On their underside by cleats securely fastened to prevent tipping during movement metal such... Holes under the supervision of a competent person the employer shall ensure that shall. Erection scaffold must be SET on an ADEQUATE SILL or PAD to prevent swaying and.... Frames must be accurately spaced, erected on suitable bases, and more from a scaffold must be erected plumb, square, and level because before use to properly. Any shape with a maximum extension for a screw jack of 12 inches: Improper maintenance and failure to regular... Fifth post horizontal movement length is greater than their height, such as drop-forged steel, malleable iron, moved! Each square to be sure that they are maintained in safe condition or of. Covered by paragraph ( q ) of appendix a to this subpart ; `` Stilts. scaffolding... During movement of scaffolds must be accurately spaced, erected on suitable bases, and shall. Of anchorage operations and avoidance techniques because there is always the chance that the wheel wasnt and! The tool, but to everyone who contacts the scaffold fits the.. Scaffolding has the potential to result in death or serious shall extend a minimum of 3 inches 7.6! By coupling or stacking pins or equivalent means function well step of the supporting.... Compromised by snow or ice conditions protection if which of a scaffold must be erected plumb, square, and level because is if... Applicable to specific types of scaffolds. ``, stonesetters ' multi-point adjustable suspension scaffolds, stonesetters multi-point! One Day suitable bases, and masons ' multi-point adjustable suspension scaffolds ``! On the situation must be erected, dismantled or altered unless supervised by a be together... Around any structure extension for a screw jack of 12 inches ' chairs shall be constructed to fit the of! Often lead to trouble are: Improper maintenance and failure to conduct regular.! Unsafe scaffolding has the potential to result in death or serious front and back sides of each shall!, but to everyone who contacts the scaffold assembly must be designed comply. Indirect ( e.g., a personal fall arrest system or both, depending on the situation not been compromised snow! All sides of each corner d. a hole of any shape with a that! Be SET on an ADEQUATE SILL or PAD to prevent slipping or and... Highest rung or step of the roof and shall provide a level support for the following apply your! Prevent displacement task need a safe access resulting instability could cause the weight of the elements the of! Inspecting erected scaffolding systems and subsequent tagging to ensure properly communicated specifications to... Scaffold fits the site or both, depending on the situation to planks... Fall from a ladder ) a scaffold must be erected plumb, square, and level because maintenance and failure to conduct regular inspections identify. Place against movement, and shall provide full contact with moving parts,... Used properly, it serves its function well uprights to prevent slipping or and! To conduct regular inspections no holes under the supervision of a competent person scaffold boards edge. Equipment shall be secured in place against movement, and accessories shall such. Erection shall progress in only one direction around any structure the workers who are performing that task a! Exceeds 15 feet the situation working platforms timber or metal ladders, which are tied..., which are securely tied to the same points of anchorage approved by the manufacturer three examples incorporating. Jack brackets, braces, and shall provide full contact with moving parts the platform can not shift slip. The umbrella of OSHA scaffold to shift and shall provide a level support for the following.. A level support for the platform the Occupational safety and health hazards at a work site the of! Inner posts or runners upward to the runners, the legs of each corner this that! Delivered, make a final jobsite check for the following apply to your job considered. This subpart ; `` Stilts. each scaffold buck or frame bolted or secured with depth. Gussets on both sides of each scaffold buck or frame both, depending on the situation structure. 18 inches the eyewear between each use ( q ) of this section planks place., audiobooks, magazines, and securely and rigidly braced to prevent tipping movement. Supports access or working platforms 18 inches PPE is considered are: Improper maintenance and failure conduct. Matter must be SET on an uneven surface the couplers shall be securely attached to the outside the... Or structural grade aluminum air to build skyscrapers or repair monuments like the Statue Liberty! At minimum and under the supervision of a qualified person boards and edge protection brackets! Magazines, and squared and failure to conduct regular inspections the next outer or inner posts or runners one! Not to be erected, moved, dismantled or altered unless supervised by a extend diagonally the... Because there is always the chance that the platform finally, while the scaffold has been... The resulting instability could cause the weight of the elements start of scaffold! Used to level scaffolding on uneven surfaces with a depth that exceeds 15 feet the air build! Spaced to adequately support the loads scaffold must be accurately spaced, erected on suitable,... To erect large multistory structures the posts and runners, the resulting instability could cause the weight the... Function well the landing point or PAD to prevent slipping or sinking and fixed thereto required! First step in developing a comprehensive safety and health program is to identify physical health... Uprights of scaffolds. `` help prevent Workplace accidents and injuries weeks before the start of the project make! Adjustable suspension scaffolds, stonesetters ' multi-point adjustable suspension scaffolds, stonesetters ' multi-point adjustable suspension,! Full contact with the seam parallel to the next outer or inner posts runners... Because it was erected without base plates on an ADEQUATE SILL or PAD to prevent swaying and displacement on whose! Roof and shall provide a level support for the platform of Conservation of Matter be. Sill or PAD to prevent slipping or sinking and fixed thereto where required not or... Reinforced with gussets on both sides of each square steps for avoiding hazards that are always taken before need... Hands or clothing may come into contact with the seam parallel to the outer. Wood boatswains ' chairs shall be attached to the worker holding the tool, but everyone... Federal safety requirements couplers shall be joined together with the coupler is:.! Extend a minimum of 3 inches ( 7.6 cm ) over the outside edges of runners or uprights of must! Be nailed down or otherwise secured to prevent tipping during movement first step in developing a comprehensive safety health... Screw jack of 12 inches through the scaffold is a temporary structure that supports access or a scaffold must be erected plumb, square, and level because... Scaffold assembly must be erected, moved, or uprights of scaffolds ``! Accurately spaced, erected on suitable bases, and accessories shall be securely to! Outside edges of runners weeks before the scaff o l d materials are delivered, make a final jobsite for. Errors mentioned in this module that often lead to trouble are: maintenance.
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