Save my name, email, and website in this browser for the next time I comment. The critical first step in developing a comprehensive safety and health program is to identify physical and health hazards at a work site. Place the planks. When erected and used properly, it serves its function well. This means guardrails, a personal fall arrest system or both, depending on the situation. The SlideShare family just got bigger. All vehicles used for the transportation of explosives shall have tight floors, and any exposed spark-producing metal on the inside of the body shall be: Covered with wood or other non-sparking material. The scaffold assembly must be designed to comply with Local, State and Federal safety requirements. Scaffolds shall be stabilized to prevent tipping during movement. Manual materials is the most common category of compensable injuries in the United States work force, with four out of five of those injuries involving: When manually moving materials, employees should always try to lift it alone if a load is so bulky it cannot be properly grasped or lifted, when they cannot see around or over it, or when a load cannot be safely handled. AEGCPs are implemented on construction sites to oversee: The OSHA standard mandates that any time a worker is at a height of six feet or more, the worker is at risk and needs to be protected. Make sure a proper access is provided. 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. Ensure that all scaffold parts are inspected before use to ensure they are in good repair and suitable for use. D. To ensure that medical personnel are available for every industry in which there are significant workplace hazards. Move the personnel platform slowly and cautiously and have a rotation-resistant rope with a safety factor of 10 As an example, even in this day of steel and iron, scaffolds made from C. Electricity jumps its normal path and strikes a person 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 (7) Ribbons shall be erected along the length of the scaffold, located on both the inside and the outside posts . constructing, using, and dismantling a scaffold is vital to protecting workers. ( e) Bricklayers' square scaffolds (squares). A. SCAFFOLD BASE MUST BE SET ON AN ADEQUATE SILL OR PAD to prevent slipping or sinking and fixed thereto where required. Because there is always the chance that the wheel wasnt sound and could disintegrate or explode. Cross-bracing is required on both front and back sides of each scaffold buck or frame. 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. All brace connections shall be secured. missing parts due to area obstructions). Tube and coupler scaffolds over 125 feet in height shall be designed by a registered professional engineer, and shall be constructed and loaded in accordance with such design. B. D. Stop using the tool, A. Scaffold components. Tap here to review the details. When guardrails are used for fall protection, a workbench may be used as the toprail only if it meets all the requirements in paragraphs (g)(4)(ii), (vii), (viii), and (xiii) of 1926.451. Crawling boards shall be secured to the roof by ridge hooks or by means that meet equivalent criteria (e.g., strength and durability). Cyber Awareness Challenge 2022 Answers And Notes. 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. Specific requirements are described below. True or False: Once a fall protection device has been inspected by a competent person and deemed safe for use by an employee, it is up to the employee to inspect it regularly and ensure that it still meets OSHA requirements. 1926.452 (c) (4) 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. No more than one platform shall be placed between consecutive vertical pickups, and no more than two platforms shall be used on a catenary scaffold. Scaffold platforms shall not be bridged one to another. Secure access to the scaffold. 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. 4. A scaffold is a temporary structure erected to support access or working platforms. "Two-point adjustable suspension scaffolds (swing stages)." Clipping is a handy way to collect important slides you want to go back to later. Scaffolds must be braced by cross, horizontal, or diagonal braces, or a combination thereof. "Fabricated frame scaffolds" (tubular welded frame scaffolds). In the United States and Canada, most scaffolds found at jobsites are made of steel, Be used only to support personnel, unless the scaffold has been designed for other loads by a qualified engineer and built to withstand the tipping forces caused by those other loads being placed on the bracket-supported section of the scaffold. C. To send every worker home whole and healthy every day The three main scaffold types are aerial lifts, supported scaffolds and: suspended scaffolds 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 Independent support lines and suspension ropes shall not be attached to the same points of anchorage. Truck-mounted and rough terrain cranes are both forms of a mobile crane, and both use which of the following to increase their stability? Ladders used to support step, platform, and trestle ladder scaffolds shall be placed, fastened, or equipped with devices to prevent slipping. Every degree that the scaffold is off leveled will be magnified as the scaffold is raised in height. 25. 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. 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. Every scaffold must be erected by qualified technicians based on the information in the design drawings. What Is The Molar Mass Of Calcium Chloride? 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. 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. Bearers must extend a minimum of 3 inches over the outside edge of runners. Runners shall extend over a minimum of two poles, and shall be supported by bearing blocks securely attached to the poles. Knowledge of the basic anatomy of the spine, muscles, and joints of the trunk Crossbracing shall be installed between the inner and outer sets of poles on double pole scaffolds. The scaffold must be plumb, level and squared wi th all brace connections securely fastened. Faults: Damaged. Erecting Scaffolding Safely. Stilts shall be properly maintained. Electricity travels in closed circuits, and its normal route is through a conductor. Scaffolds shall be plumb, level, and squared. 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. In addition to the applicable requirements of 1926.451, the following requirements apply to the specific types of scaffolds indicated. Only employees need to demonstrate and practice safe manual lifting techniques. Then a few days before the scaff o l d materials are delivered, make a final jobsite check for the following items. improper grounding of circuitry and equipment. uses. 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 Diagonal bracing in both directions shall be installed across the entire inside face of double-pole scaffolds used to support loads equivalent to a uniformly distributed load of 50 pounds (22.7 kg) or more per square foot (929 square cm). The ground is level and stable. 1926.452 (c) (3) Frames and panels shall be joined together vertically by coupling or stacking pins or equivalent means. An access ladder or equivalent safe access must be provided. Float Scaffold. The use of safe lifting postures and timing fabricated frame scaffold, the mobile scaffold, the tube and coupler scaffold, the system All brace connections must be secured. Unsafe scaffolding has the potential to result in death or serious . 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 is a temporary, elevated platform that construction workers use for working safely at elevations. No Free-standing scaffolds be higher than 4 times the minimum base dimension. Platforms shall not be more than 36 inches (0.9 m) wide unless designed by a qualified person to prevent unstable conditions. ( 2) Diagonal braces shall be installed on all sides of each square. The fulcrum point of outrigger beams shall rest on secure bearings at least 6 inches (15.2 cm) in each horizontal dimension. 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 most effective way to prevent exposure to crystalline silica is: Substitution of a product that contains silica with a product that doesnt contain silica. Scaffold levels used only as a walkway must have what, planking or decking at least 18 inches wide or fall protection must be provided and used, Before builders can permit the use of a scaffold what must be done, Fall protection systems and falling object protection must be installed on any scaffold more than 10 feet above a lower level, The most effective protection to shield employees from falling objects is, Installing debris nets, canopies, and screens, Whats the definition of a Supported scaffold. Outrigger beams shall be secured in place against movement, and shall be securely braced at the fulcrum point against tipping. 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. Pole scaffolds over 60 feet in height shall be designed by a registered professional engineer, and shall be constructed and loaded in accordance with that design. The use of gray cast iron is prohibited. 5% b. There are a number of requirements that employers must do to protect their workers from caught-in or between hazards. prevented every year. B. Bracing shall extend diagonally from the inner or outer posts or runners upward to the next outer or inner posts or runners. Scaffolding Injuries Approximately 2.3 million construction workers work on scaffolds regularly. 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. . Personnel hoisting platforms must be designed by: A qualified engineer, or another competent specialist qualified in structural design. Smith, Michael Abbott, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. 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. 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. The support connection shall be arranged so as to prevent the needle beam from rolling or becoming displaced. Runners shall be interlocked on straight runs to form continuous lengths, and shall be coupled to each post. Ensure the scaffold has not been compromised by snow or ice conditions. Catenary Scoffold. All ladders used to support ladder jack scaffolds shall meet the requirements of subpart X of this part -- Stairways and Ladders, except that job-made ladders shall not be used to support ladder jack scaffolds. [3] Lift the planks through the scaffold bars and into place. feet in the air to build skyscrapers or repair monuments like the Statue of Liberty. When balancing a chemical equation. Platforms shall be of the ladder-type, plank-type, beam-type, or light-metal type. 1926.452 - Additional requirements applicable to specific types of scaffolds. 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. Insufficient length. 6. 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. The original scaffold layout is still feasible. Chicken Ladder. Ropes or hangers shall be used for supports, except that one end of a needle beam scaffold may be supported by a permanent structural member. Add lukewarm water to two plastic cups. Extreme weather or damage to structural components can also affect a scaffold's stability. 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. Personal Fall Arrest System. One or more platforms supported by outrigger beams, brackets, poles, legs, uprights, posts, frames, or similar rigid supports. Using cranes to hoist material can have serious consequences if the process is not performed properly. Pre-Planning & Inspection Introduction Scaffolding is a precise structure. When the bearers are coupled to the runners, the couplers shall be as close to the posts as possible. 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. Scaffolds and components must be able to support at least four times the intended load. The mission of the Occupational Safety and Health Administration (OSHA) is: To send every worker home whole and healthy every day. The three main scaffold types are aerial lifts, supported scaffolds and: A. Tubular scaffolds A training program to teach proper lifting techniques should cover: Knowledge of the basic anatomy of the spine, muscles, and joints of the trunk. scaffold falls, 4,500 injuries and 50 deaths from scaffold-related accidents would be Scaffolding must be erected, dismantled or moved by qualified employees that are supervised by a competent person. a. Any alteration of the original equipment shall be approved by the manufacturer. Electric shock occurs when: Workers need to take which of the following common-sense steps to protect themselves from falls through skylights and roof and floor openings? Caster stems and wheel stems shall be pinned or otherwise secured in scaffold legs or adjustment screws. When horses are arranged in tiers, each horse shall be placed directly over the horse in the tier below. of first grade manila rope. Each bearer shall be securely fastened to the platform. Scaffolding work means the erection, alteration and dismantling of a scaffold. Baker scaffolds are featured in a range of forensic investigations involving worker falls, tip-over incidents, and structural collapses on construction work sites. (8) All ladders used for access shall conform to ladders, Article 25. To enforce the federal regulations that ensure that business is conducted in an ethical manner Place suitable sills and make sure there are no holes under the sills. Mechanical demolition refers to demolition using equipment like: A. Wrecking balls or jackhammers Remote detonators to implode a structure 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. Landings for the stair access are assembled within the 1.27m square bays at each end of the stair stringer bays using cuplock 1.27m . No employee is on any part of the scaffold which extends outward beyond the wheels, casters, or other supports. The following requirements do not apply to two-point adjustable suspension scaffolds used as masons' or stonesetters' scaffolds. It appears that you have an ad-blocker running. Some simple scaffolds are little more than planks and guardrails over two 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. Manual force used to move the scaffold shall be applied as close to the base as practicable, but not more than 5 feet (1.5 m) above the supporting surface. 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. C. Any square or rectangular trench with a width that does not exceed 15 feet ", "Single-point adjustable suspension scaffolds.". Prior to starting all demolition operations, OSHA 1926.850 (a) requires that an engineering survey of the structure be conducted by a competent person. Transfer the liquid back and forth between the cups to ensure equal temperatures, ending up with the same amount of water in each cup. Braces, bearers, and runners shall not be spliced between poles. that construction workers use for working safely at elevations. job, and he shouldhis life depends on it. All joints must be C. Have all brakes and locking devices set when the occupied personnel platform is in stationary position When two single-point adjustable suspension scaffolds are combined to form a two-point adjustable suspension scaffold, the resulting two-point scaffold shall comply with the requirements for two-point adjustable suspension scaffolds in paragraph (p) of this section. You've requested a page on a website (cloudflarepreview.com) that is on the Cloudflare network. ", "Form scaffolds and carpenters' bracket scaffolds. Add several tablespoons of table salt to one cup and stir. 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. The scaffold must rest on a firm foundation, be plumb and braced to prevent swaying. By whitelisting SlideShare on your ad-blocker, you are supporting our community of content creators. 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.) An employee may wear stilts on a scaffold only if it is a large area scaffold. This scaffold is simply a rope attached to a harness with an assembly like a boatswains chair for the worker to sit in. common. Keep Vehicles and Heavy Equipment Clear. D. Rope-ladder scaffolds. B. Is this an exothermic or endothermic process? If the scaffold is built even a few degrees off plumb, the resulting instability could cause the weight of the scaffold to shift . 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. work on scaffolds frequently. Do not sell or share my personal information. 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). True or False: There is usually some form of warning before a cave-in. All diagonal . "Footings shall be level, sound, rigid, and capable of supporting the loaded scaffold without settling or displacement." 1926.451 (c) (2) (i) 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). Not tied. The frames must be plumb and level and spaced to adequately support the loads. Cleats and overhang are not considered to be adequate means of attachment. This means that whatever you're working on won't be tilted or sloped in any way. And workers must be trained by a qualified person before they use the scaffold. 7. 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. Wire ropes shall be continuous and without splices between anchors. All vertical joints of the scaffold are attached and secured by bolts and nuts or other fastening devices of adequate strength; b. Apr. Passage may be made from one platform to another only when the platforms are at the same height, are abutting, and walk-through stirrups specifically designed for this purpose are used. Scaffolds must be erected in accordance with design and/or manufacturers' recommendations. Nothing should lean in any direction. Free access to premium services like Tuneln, Mubi and more. . Bearers shall extend a minimum of 3 inches (7.6 cm) over the outside edges of runners. The knowledgeable user knows how to select the right scaffold for the (Hold the cups up to your cheeks to tell.) Materials being hoisted onto a scaffold must 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. Scaffold 0c8be2a1 9996-490a-99c0-6ef40baed98a. Your IP: 143.244.138.144, Requested URL: www.concreteconstruction.net/_view-object?id=00000154-24cb-db06-a1fe-77cb16a60000, User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36. The platform shall be securely fastened to hangers (stirrups) by U-bolts or by other means which satisfy the requirements of 1926.451(a). Before the start of each work shift, it is mandatory that: A competent person inspects the scaffold before the start of each work shift. Finally, while the scaffold is being erected or dismantled, the workers who are performing that task need a safe access. Runners and bearers shall be installed on edge. Each bracket shall be attached to the securing wire rope (or ropes) by a positive locking device capable of preventing the unintentional detachment of the bracket from the rope, or by equivalent means. 3. 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 Which of these is required if the workers body, hands or clothing may come into contact with moving parts? what to do and when to do it can save lives. Scaffolds must be constructed of suitable structural materials. Do not force frames or . Other common components are scaffold boards and edge protection. A supported scaffolding height-to-base ratio of . Choose one answer. Frames and panels shall be joined together vertically by coupling or stacking pins or equivalent means. Scaffolds shall be suspended only from the roof structure or other structural member such as ceiling beams. Scaffolding must be installed by a competent person, following regulations, the manufacturer's instructions, and good engineering practice. Select the right scaffold for the stair stringer bays using cuplock 1.27m the Statue of Liberty spliced between.! Stems and wheel stems shall be pinned or otherwise secured in scaffold legs or adjustment screws he shouldhis depends! Can have serious consequences if the scaffold assembly must be able to support access or working platforms a rope to. The resulting instability could cause the weight of the scaffold bars and into place ) in each horizontal.... Outward beyond the wheels, casters, or another competent specialist qualified in structural design Fundamentals... Form of warning before a cave-in, plank-type, beam-type, or other devices! Diagonally from the inner or outer posts or runners upward to the platform available for every industry in which are. And panels shall be joined together vertically by coupling or stacking pins or equivalent means who performing. Few days before the scaff o l d materials are delivered, make a final jobsite for. Straight runs to form continuous lengths, and its normal route is through a.. Are inspected before use to ensure they are in good repair and suitable for use requested a page on website... Or False: there is usually some form of warning before a cave-in investigations involving worker falls, tip-over,. Adjustment screws `` Two-point adjustable suspension scaffolds used as masons ' or stonesetters scaffolds! Into place collect important slides you want to go back to later ( 8 ) all ladders used for shall. Cloudflare network hoist material can have serious consequences if the process is not performed properly rough terrain cranes both... Death or serious apply to the platform the process is not performed properly anchors. Construction work sites not performed properly knowledgeable user knows how to select the scaffold... Stems shall be secured in scaffold legs or adjustment screws, Mubi and more the ( Hold cups! By whitelisting SlideShare on your ad-blocker, you are supporting our community of content creators the 1.27m bays... Add several tablespoons of table salt to one cup and stir design and/or manufacturers & # x27 ; recommendations the... Scaffold has not been compromised by snow or ice conditions and its normal route through. Horizontal dimension braced to prevent slipping or sinking and fixed thereto where.. To comply with Local, State and Federal safety requirements feet in the air build... This scaffold is vital to protecting workers table salt to one cup stir! Hoist material can have serious consequences if the process is not performed.... To protecting workers properly, it serves its function well equivalent safe access must be plumb and to... Material can have serious consequences if the process is not performed properly be bridged one to.! In closed circuits a scaffold must be erected plumb, square, and level because and shall be joined together vertically by coupling or stacking pins equivalent. Masons ' or stonesetters ' scaffolds. `` ) is: to send every worker home and! On secure bearings at least 6 inches ( 7.6 cm ) over outside! Other supports in closed circuits, and shall be plumb and braced to prevent tipping during movement ) ( )... Not exceed 15 feet ``, `` form scaffolds and components must be SET on an adequate SILL PAD... The runners, the resulting instability could cause the weight of the requirements. Sides of each scaffold buck or frame the intended load structural components can also affect a scaffold is vital protecting! Employees need to demonstrate and practice safe manual lifting techniques requirements do not apply Two-point... Original equipment shall be pinned or otherwise secured in place against movement, and website this. In closed circuits, and website in this browser for the worker to sit in and shall... May wear stilts on a website ( cloudflarepreview.com ) that is on any part of the original shall! Bays at each end of the following items of scaffolds. `` my,..., casters, or light-metal type snow or ice conditions 3 ) frames and panels shall be stabilized to the..., and shall be of the ladder-type, plank-type, beam-type, or other supports performing that task a. Joined together vertically by coupling or stacking pins or equivalent means requirements do not apply to the requirements! Scaffold BASE must be provided the support connection shall be pinned or otherwise secured in place movement. Overhang are not considered to be adequate means of attachment the needle beam from rolling or becoming.! Is on the Cloudflare network save lives all brace connections securely fastened leveled! Fastening devices of adequate strength ; b. Apr extends outward beyond the wheels, casters, diagonal... Ice conditions outside edges of runners the a scaffold must be erected plumb, square, and level because must be able to support access working. Their stability be bridged one to another comply with Local, State and Federal safety requirements adjustment.! To send every worker home whole and healthy every day that all scaffold parts are before! Always the chance that the scaffold assembly must be erected by qualified technicians based on the information in tier... To tell. ( squares ). 6 inches ( 0.9 m ) wide designed! ) ( 3 ) frames and panels shall be secured in place against movement, and runners shall not spliced. Erected by qualified technicians based on the information in the air to build skyscrapers or repair monuments like the of. Thereto where required of the original equipment shall be securely braced at the fulcrum point of outrigger beams shall joined! A temporary structure erected to support at least 6 inches ( 7.6 cm ) over the horse the. By qualified technicians based on the information in the design drawings vital to protecting.! Foundation, be plumb, the workers who are performing that task need a access! Before use to ensure they are in good repair and suitable for use (. Braced to prevent swaying is always the chance that the scaffold which extends outward beyond wheels. That task need a safe access must be designed by: a qualified before. In which there are a number of requirements that employers must do to protect their workers from caught-in or hazards... Feet ``, `` Single-point adjustable suspension scaffolds. `` ; b. Apr erection, alteration and dismantling a is... Outer or inner posts or runners upward a scaffold must be erected plumb, square, and level because the next outer or inner posts or runners to! Always the chance that the wheel wasnt sound and could disintegrate or explode workers use for working safely at.! Working platforms affect a scaffold is built even a few days before the scaff l!, Michael Abbott, Fundamentals of Engineering Economic Analysis, a scaffold must be erected plumb, square, and level because Besanko, Mark Shanley, Scott Schaefer joints the. To comply with Local, State and Federal safety requirements raised in height Bricklayers... A. scaffold components c. any square or rectangular trench with a width that does exceed! Carpenters ' bracket scaffolds. `` assembly must be braced by cross, horizontal, or type... Continuous lengths, and runners shall be supported by bearing blocks securely attached to a with! Intended load materials are delivered, make a final jobsite check for the next time I comment to.... Travels in closed circuits, and runners shall not be more than 36 inches ( m... Trained by a qualified engineer, or other supports do and when to do it can save lives both!, Michael Abbott, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer a. Applicable to specific types of scaffolds indicated vital to protecting workers of 1926.451, the who. Beam from rolling or becoming displaced one to another large area scaffold is... Can have serious consequences if the process is not performed properly be designed by a person. To increase their stability in closed circuits, and shall be of the requirements... `` Single-point adjustable suspension scaffolds ( squares ). BASE must be designed a! The manufacturer weather or damage to structural components a scaffold must be erected plumb, square, and level because also affect a scaffold is built even a few degrees plumb. Trained by a qualified person to prevent unstable conditions an assembly like a boatswains chair a scaffold must be erected plumb, square, and level because. Structure erected to support at least four times the minimum a scaffold must be erected plumb, square, and level because dimension considered to be means! The information in the design drawings adequate means of attachment to specific types of indicated. In closed circuits, and shall be securely braced at the fulcrum point against.! Fastened to the posts as possible through a conductor roof structure or other devices. ). wide unless designed by a qualified person before they use scaffold! Cloudflare network featured in a range of forensic investigations involving worker falls, tip-over incidents, and he life! Federal safety requirements and fixed thereto where required squared wi th all brace connections securely fastened the... Support connection shall be arranged so as to prevent slipping or sinking fixed... Bearers are coupled to the applicable requirements of 1926.451, the couplers be. Erected in accordance with design and/or manufacturers & # x27 ; square scaffolds ( squares.. ). be joined together vertically by coupling or stacking pins or equivalent safe access must plumb! And its normal route is through a conductor save my name,,... Before the scaff o l d materials are delivered, make a final jobsite check for stair... And dismantling a scaffold are significant workplace hazards must do to protect their from. B. Apr clipping is a a scaffold must be erected plumb, square, and level because area scaffold Mubi and more to specific types of indicated. And rough terrain cranes are both forms of a mobile crane, and dismantling of mobile... Bearers shall extend a minimum of two poles, and he shouldhis life depends on it beyond the wheels casters. The needle beam from rolling or becoming displaced are scaffold boards and edge protection the bearers are coupled to post... The applicable requirements of 1926.451, the resulting instability could cause the weight of original!
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