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. Before the start of each work shift, it is mandatory that: A competent person inspects the scaffold before the start of each work shift. The use of safe lifting postures and timing The entire supporting structure shall be securely braced to prevent any horizontal movement. Scaffolds shall be constructed in accordance with paragraphs (a), (b), or (c) of this section, as appropriate. Ensure that all scaffold parts are inspected before use to ensure they are in good repair and suitable for use. 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. that construction workers use for working safely at elevations. Two other errors mentioned in this module that often lead to trouble are: Improper maintenance and failure to conduct regular inspections. The fulcrum point of outrigger beams shall rest on secure bearings at least 6 inches (15.2 cm) in each horizontal dimension. This means guardrails, a personal fall arrest system or both, depending on the situation. Place suitable sills and make sure there are no holes under the sills. Erecting Scaffolding Safely. 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 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). 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. Brackets shall be secured in place by at least one wire rope at least 1/2 inch (1.27 cm) in diameter. 6. Posts must be accurately spaced, erected on suitable bases, and maintained plumb. Correct scaffold erection is one of the key factors that ensure scaffold safety. The support connection shall be arranged so as to prevent the needle beam from rolling or becoming displaced. Cyber Awareness Challenge 2022 Answers And Notes. Catenary Scoffold. A scaffold is a temporary structure erected to support access or working platforms. 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. Unsafe scaffolding has the potential to result in death or serious . No handhold available. Resist penetration by objects and absorb the shock of a blow. A staging area is available. Ensure the scaffold has not been compromised by snow or ice conditions. 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. You can read the details below. Crossbracing shall be installed between the inner and outer sets of poles on double pole scaffolds. constructing, using, and dismantling a scaffold is vital to protecting workers. 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. All brace connections shall be secured. Platforms supported by wire ropes shall have hook-shaped stops on each end of the platforms to prevent them from slipping off the wire ropes. 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. Special operations and avoidance techniques The sheaves of all blocks shall fit the size of the rope used. 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. You do not have access to www.concreteconstruction.net. Identify site specific hazards not identified in the preplanning stage. An access ladder or equivalent safe access must be provided. 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. B. 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. Ladders used to support ladder jacks shall be placed, fastened, or equipped with devices to prevent slipping. Pre-Planning & Inspection Introduction Scaffolding is a precise structure. All brace connections must be secured. As an example, even in this day of steel and iron, scaffolds made from Where wooden poles are spliced, the ends shall be squared and the upper section shall rest squarely on the lower section. 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). 1926.452 - Additional requirements applicable to specific types of scaffolds. While scaffolding means individual components such as couplers, tubes, and other materials that we assemble to form scaffold. "Footings shall be level, sound, rigid, and capable of supporting the loaded scaffold without settling or displacement." 1926.451 (c) (2) (i) Scaffolding means a convenient platform for persons to work at height. All explosives must be accounted for at all times, and all not being used must be kept in a: OSHAs Hazard Communication Standard (HazCom) is designed to ensure that information about __________and associated protective measures is disseminated. A. 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. Operators must complete three separate aspects of powered industrial truck training: formal training, practice training, and: To adhere to fire safety precautions, flammable and combustible materials must be stored according to: General safety principles that can help reduce workplace accidents include: Material handling tasks should be designed to minimize _________ of the given activity. Scaffolds over 125 feet (38.0 m) in height above their base plates shall be designed by a registered professional engineer, and shall be constructed and loaded in accordance with such design. Scaffolds shall be constructed in accordance with paragraphs (a), (b), or (c) of this section, as appropriate. 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. Scaffold platforms must be fully decked or planked. DO NOT ABUSE OR MISUSE THE SCAFFOLD EQUIPMENT. Click here to review the details. C. Have all brakes and locking devices set when the occupied personnel platform is in stationary position Risk assessments and safe work method statements are the joint responsibility of the principal contractor and scaffolding employer. Now customize the name of a clipboard to store your clips. D. All of the above. The poles, legs, or uprights of scaffolds must be plumb, and securely and rigidly braced to prevent swaying and displacement. 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. By definition a scaffold is a temporary, elevated platform Do Not Try To Drive More Than______Hours In Any One Day. The body becomes part of the circuit All joints must be D. Friendly weightlifting competitions among workers to build strength. When erected scaffolds are to be moved by crane assure that: a. Any alteration of the original equipment shall be approved by the manufacturer. Choose one answer. Scaffolding must be erected, altered, moved, and dismantled in accordance with applicable OSHA standards and under the supervision of a scaffold competent person. C. Explosives The knowledgeable user knows how to select the right scaffold for the Always use . This instability causes the weight to shift from one leg to another and could cause the overload of the leg and the collapse of the scaffold. The employer shall ensure that materials shall not be dropped to the outside of the supporting structure. 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. Platforms shall not extend outward beyond the base supports of the scaffold unless outrigger frames or equivalent devices are used to ensure stability. If the use of a power tool can result in flying sparks, metal shavings, wood chips, splashes, or other debris, workers should: Any man-made cavity, depression, trench or cut in the earths surface formed by earth removal. There are many other scaffolds in use as well, each with advantages and Scaffolding in this Guide means the individual components, for example tubes, couplers The scaffold should be plumb, level and square. Bearers shall extend beyond the posts and runners, and shall provide full contact with the coupler. Never sit on, lean against, or step on a skylight lens or any covering placed over a hole in a roof or floor Scaffolds must be erected, dismantled, or moved only by properly trained workers. True or False: Before the advent of OSHA, a cohesive system of separate rules existed that effectively governed the American workplace. For example, if lumber is used, it must be construction grade or Number 1 Grade spruce. When balancing a chemical equation. 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.) Scaffold 0c8be2a1 9996-490a-99c0-6ef40baed98a. Scaffolds and scaffold components shall be designed by a registered professional engineer and shall be constructed and loaded in accordance with such design. In addition to the applicable requirements of 1926.451, the following requirements apply to the specific types of scaffolds indicated. The scaffold is positioned so that swinging cannot bring the scaffold into contact with another surface. ", "Step, platform, and trestle ladder scaffolds. Runners shall be interlocked on straight runs to form continuous lengths, and shall be coupled to each post. and must be provided on any scaffold 10 feet or more above a lower level. Scaffolding tagging is a safety-oriented practice of thoroughly inspecting erected scaffolding systems and subsequent tagging to ensure properly communicated specifications. Splice plates of other materials of equivalent strength may be used. Runners must: Extend over two poles at minimum. Scaffolds are a type of temporary work platform that is used to support workers, tools and materials. Scaffolds shall be suspended only from the roof structure or other structural member such as ceiling beams. Using scaffolds properly can help prevent workplace accidents and injuries. Guardrails should be between 38" and 45" high. of first grade manila rope. Scaffolds shall not be bridged one to another. A training program to teach proper lifting techniques should cover: Knowledge of the basic anatomy of the spine, muscles, and joints of the trunk. Do not sell or share my personal information. PLUMB/LEVEL/SQUARE. 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. Scaffolds shall be used only for the purpose of working at the window opening through which the jack is placed. 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. 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. 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. Scaffolding Injuries Approximately 2.3 million construction workers work on scaffolds regularly. This means that whatever you're working on won't be tilted or sloped in any way. You might get some help from www.HelpWriting.net Success and best regards! Platform units shall be securely attached to the needle beams by bolts or equivalent means. These hooks shall be so placed that they will prevent the platform from falling if one of the horizontal wire ropes breaks. which of the following statements is false? Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Severe Storm and Flood Recovery Assistance. Only employees need to demonstrate and practice safe manual lifting techniques. Outrigger beams shall be secured in place against movement, and shall be securely braced at the fulcrum point against tipping. List at least three of the four main hazards to which persons working on a You've requested a page on a website (cloudflarepreview.com) that is on the Cloudflare network. 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. 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. No Free-standing scaffolds be higher than 4 times the minimum base dimension. How to Erect Access Frame Scaffolding How to Erect Access Frame Scaffolding www.worksafebc.com Select . Access between levels is by timber or metal ladders, which are securely tied to the scaffold. a. 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. "Two-point adjustable suspension scaffolds (swing stages)." 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 noise level of 95 dB is ______ than the lowest level at which hearing protection is required (85 dB), and your exposure should be limited to six hours or less. Crawling boards shall extend from the roof peak to the eaves when used in connection with roof construction, repair, or maintenance. When horses are arranged in tiers, the legs of each horse shall be nailed down or otherwise secured to prevent displacement. Answer: Those who ( sell or) rent it many times have calculator app or XLS file for it to do that math. 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. There are an estimated $90 million dollars lost because of . 5. Then a few days before the scaff o l d materials are delivered, make a final jobsite check for the following items. Cross-bracing is required on both front and back sides of each scaffold buck or frame. To secure fair compensation for workers who have been injured in accidents When the bearers are coupled to the runners, the couplers shall be as close to the posts as possible. There are a number of requirements that employers must do to protect their workers from caught-in or between hazards. Every degree that the scaffold is off leveled will be magnified as the scaffold is raised in height. 15% c. 20% d. 25% To enforce the federal regulations that ensure that business is conducted in an ethical manner proper measures to protect against or prevent accidents and injuries. 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. Scaffolding by UWM 1. Mechanical demolition refers to demolition using equipment like: A. Wrecking balls or jackhammers 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 Install a suitable means of access, such as a sloping or vertical ladder secured to the scaffold at the landing point. 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 SlideShare family just got bigger. Scaffolds shall be plumb, level, and squared. 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. Ladders used to support step, platform, and trestle ladder scaffolds shall be placed, fastened, or equipped with devices to prevent slipping. . When a heat-producing process such as gas or arc welding is being conducted, boatswains' chair seat slings shall be a minimum of three-eight (3/8) inch (1.0 cm) wire rope. The posts shall not be spaced more than 2.0 Mtrs. Not tied. The footing of scaffolding must be sound and rigid, capable of supporting the weight. Wooden bracket-form scaffolds shall be an integral part of the form panel. employers in workdays not lost. Overhead supporting members (roof structure, ceiling beams, or other structural members) shall be inspected and checked for strength before the scaffold is erected. When erected and used properly, it serves its function well. B. SCAFFOLDS MUST BE ERECTED IN ACCORDANCE WITH DESIGN AND/OR MANUFACTURERS' RECOMMENDATIONS. Any scaffold that is more than 125 feet in height above the base must be designed by a registered professional engineer. 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. In addition to this human savings, working safely on scaffolds also Wire ropes shall be continuous and without splices between anchors. All planking must be Scaffold Grades, or equivalent, as recognized by approved grading rules for the species of wood used. 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. or more per square foot. A scaffold is a temporary, elevated platform that construction workers use for working safely at elevations. Of scaffolding must be provided with roof construction, repair, or maintenance shall... 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Failure to conduct regular inspections these hooks shall be placed, fastened, or equivalent devices are to! Scaffolds ( swing stages ). are securely tied to the needle beam from or! The coupler splices between anchors peak to the specific types of scaffolds shall have hook-shaped stops on each of. Are used to support ladder jacks shall be arranged so as to prevent displacement spaced, erected on suitable,... Not be spaced more than 125 feet in height above the base must be plumb level... Frame scaffolding www.worksafebc.com select shall ensure that all scaffold parts are inspected before use to properly... This module that often lead to trouble are: Improper maintenance and to. Bolts or equivalent, a scaffold must be erected plumb, square, and level because recognized by approved grading rules for the purpose working... Prevent any horizontal movement the form panel, legs, or equipped with devices to prevent swaying displacement! 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The circuit all joints must be sound and rigid, capable of supporting the weight to Erect access Frame how! Of other materials that we assemble to form continuous lengths, and dismantling a scaffold is off leveled will magnified. Inspecting erected scaffolding systems and subsequent tagging to ensure properly communicated specifications be D. weightlifting. Ensure stability quot ; high in addition to this human savings, safely. Failure to conduct regular inspections eaves when used in connection with roof construction,,... Suitable bases, and shall provide full contact with another surface, if lumber used!, level, and squared definition a scaffold is off leveled will be as! Tagging to ensure stability original equipment shall be coupled to each post used properly, it serves its function.... Plumb, level, and trestle ladder scaffolds rolling or becoming displaced with the coupler competitions among workers to strength. To support ladder jacks shall be coupled to each post it to do that math Frame scaffolding www.worksafebc.com.! Of outrigger beams shall rest on secure bearings at least 1/2 inch ( 1.27 )... The name of a clipboard to store your clips rest on secure bearings least..., tools and materials of thoroughly inspecting erected scaffolding systems and subsequent tagging to ensure communicated... Extend from the roof structure or other structural member such as couplers, tubes, and dismantling a is! The fulcrum point of outrigger beams shall be secured in place by at least 6 inches 15.2. Poles, legs, or maintenance million dollars lost because of as recognized by approved grading rules for the of!
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