The following table provides the clearance distances between scaffolds and power lines, or any other conductive material, while being erected, used, dismantled, altered or moved. Workers are most vulnerable to fall hazards when climbing on or off a scaffold. Select the correct answer and then click DONE. b.Three times There are many types of scaffolds, both supported and suspended. Personal fall arrest systems can be used on scaffolding when there are no guardrail systems. footings are capable of supporting the loaded scaffold without settling or displacement. \text { Target } \\ Access must be provided when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. d.35 feet, The top rail of a guardrail system must be installed how many inches above the platform? Refresher type training will be provided on an as needed basis; the periodicity of this training to be determined by EHS and the departments management, but should not exceed a period of 5 years from the previous training. 3.String Frequency of the training to be determined by EHS and department management, but should not exceed period of 5 years from the previous training. c.Three feet HV[o6~8%9N(Km -QTI*CJe'{tC^nAieAi?Ypqvi;y5P( s!u c.10 inches Scaffold Roles and Responsibilites Section. Ensure frames and panels are locked together to prevent uplift, where uplift can occur. d. Four feet. Refusing to occupy a scaffold prior to the Competent Person providing documentation indicating that the scaffold has been inspected and deemed safe. d.Once a month, A personal fall arrest system must limit free fall to how many feet or less? When scaffold platforms are more than 2 feet (0.6 m) above or below a point of access, portable ladders, hook-on ladders, attachable ladders, stair towers (scaffold stairways/towers), stairway-type ladders (such as ladder stands), ramps, walkways, integral prefabricated scaffold access, or direct access from another scaffold, structure, personnel Scaffold Platform Construction What are scaffold platform construction requirements? All equipment shall be inspected to ensure that it is in good condition and is serviceable. Requirements for Access to Scaffolds. c.Re-evaluate the site, as the ground conditions have changed due to weather. Select the correct answer and then click DONE. At what height must employees use fall protection while working on a scaffold? Cross braces shall not be used as a means of access. 2. d.6 inches, A means of access must be provided when the scaffold platform is more than how many feet above or below a point of access? Employees shall be trained to demonstrate competency in the following areas: 5235 South Harper Court 2.Always use the proper ladder or stairs. A competent person is one who is capable of identifying existing and predictable hazards in the surroundings or working conditions that are hazardous to employees, and who has authorization to take prompt corrective measures to eliminate them. What are supported scaffold foundations set on to ensure stability? Only authorized scaffold erectors can erect scaffolds on campus. No more than two workers are permitted to work at one time on suspension scaffold designed for a working load of 500 pounds. Guardrail systems must be capable of withstanding, without failure, a force of at least 200 pounds applied in a downward or outward direction at any point within two inches of the top edge of the top rail. A self-supporting scaffold is one or more work platforms supported from below by outriggers, brackets, poles, legs, uprights, posts, frames or similar rigid supports. c.6 feet 1.Make sure it was erected properly. 5. Select the correct answer and then click DONE. What is the widest gap permitted between adjacent planks or deck units, or between the platform and the uprights of a scaffold? Laura's supervisor, a competent person, has determined that the work may continue despite the moderate winds. Erecting scaffolds in accordance with local, state, and federal. The lifeline must be attached securely to substantial members of the structure (not the scaffold) or to securely rigged lines that will safely suspend the employee in case of a fall. 2.Rubber Be sure employees are able to safely access any level of a scaffold that is 2 feet above or below an access point. One means to support students is through the use of language scaffolds, which temporarily support students' language use in the classroom. c.20 inches \text { Type of } \\ The regulatory text also is found in 29 CFR 1926, Subpart L, which is available from the Government Printing Office at (202) 512-1800; (202) 512-2250 fax - Order No. EXCEPTION: Scaffolds and materials may be closer to power lines than specified where such clearance is necessary for performance of work and only after the utility company or electrical system operator has de-energized or relocated the lines. 2.Use bricks to bring the scaffolding level. Direct access from another surface is acceptable when the scaffold is not more than 14 inches horizontally and not more than 24 inches vertically from the other surfaces. b.3 to 1 He notices that there have been several large spills of paint over them. 4. b.8 feet The number one scaffold hazard is worker falls. b.Yes, because the platform is more than two feet off the ground, or point of access. A ladder or other safe means of access must be provided. Scaffolds and components must be able to support at least four times the intended load. Check to make sure scaffold components made of dissimilar metals are not used together, unless a competent person has determined that galvanic action will not reduce the strength, through corrosion, of any component below OSHA standards. Before erecting a scaffold, the first step is to: that apply to the following statement and then click DONE. Barbara and her team erected scaffolding outside of a building earlier this week. Guardrails shall be installed along the open sides and ends before releasing the scaffold for use by the employees, other than erection or dismantling crews. How can the components of this jury-rigged scaffold possess sufficient structural integrity? c.4 to 1 c.10 feet Compacted Gravel Roads - This type of road surface may have adequate strength but the material does not provide a smooth surface. 4.Jump from one platform to another. \end{array} Nature of electrical, fall hazards and falling object hazards in the work area; Proper handling of materials on scaffolds; Proper erecting, maintaining and disassembling of fall protection systems; Proper construction, use, placement and care in handling of scaffolds; and. 1926.451(e . Additional non-compliant actions associated with scaffolds will also warrant retraining and if necessary, disciplinary actions by their department. Make sure each platform is fully planked or decked between the front uprights and the guardrail supports. Each worker on a scaffold more than 10 feet above a lower level must be protected from falling to that lower level by use of guardrail systems or personal fall arrest systems. 3.Install a wind screen on the scaffold. Employers must provide access when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. Ropes capable of supporting at least six (6) times the rated load must be used to suspend two-point suspension scaffolds. c.Long sleeve shirts Check that scaffolds and scaffold components are capable of supporting, without failure, their own weight and at least 4 times their maximum intended load. Ensuring all inspection and maintenance practices for scaffolds are conducted by a competent person in accordance with this policy and procedure. 8 inches Which of the events increase potential GDP and which decrease it? You will receive a message if you forgot to answer one of the questions. Standard guardrails (e.g., handrail and midrail) and toeboards must be provided for all open sides of the scaffolding that are ten (10) feet or more above the surrounding surfaces. \text { Students-back } \\ and must be provided on any scaffold 10 feet or more above a lower level. To protect against falling objects, screens must be installed between the toeboard and midrail if anyone is required to pass under the scaffolding. Then this must be inspected when conditions change, such as sunny conditions, warming temperatures, etc. Contacting and coordinating with the Competent Person regarding any issues associated with the erection of a scaffold. If a ramp or walkway has a slope of more than 1:8, make sure it has cleats securely fastened to the planks not more than 14 inches apart, to provide footing. The department also to provide competent person with document indicating that they are competent persons representing their respective departments and shall agree to uphold all local, state, and federal rules and regulations as they relate to scaffolding. 4 feet How can you ensure that scaffolding will automatically remain plumb, level, and square? c. 3.5 inches unstable objects are not used to support scaffolds or platform units. Remove ties and braces. Examining the scaffold tag (which should be affixed near the access point) to verify that a competent person has deemed the scaffold safe for use. Note: Platforms may be coated periodically with wood preservatives, fire retardants, and slip-resistant finishes, provided they do not obscure the top or bottom wood surfaces. Outriggers must be used on narrow frame type scaffolds (i.e. A competent person is an employee who is capable of identifying existing or predictable hazards in the surroundings or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has the authorization to take prompt corrective measures to eliminate these hazards. %PDF-1.4 % Select the correct answer and then click DONE. Scaffolding eTool Home General Requirements Suspended Scaffolds Supported Scaffolds Scissor Lifts Aerial Lifts All Types Scaffolding General Requirements for Scaffolds [ 29 CFR 1926.451] Capacity What are the capacity requirements for all scaffolds? Sills shall be level and in full contact with the supporting surface. 1926.451(e)(9) & (g) 4 It is important to inspect scaffolds and scaffold components for visible defects before each work shift and after any occurrence that could affect a scaffolds integrety. Select the correct answer and then click DONE. Before erecting the scaffold, a number of factors must be accounted for. Make sure integral (built-in ladder) scaffold access frames: Stair towers have many specific design requirements. The footing of scaffolding must be sound and rigid, capable of supporting the weight. All scaffolds and their components must support without failure its own weight and at least four times the maximum intended load applied or transmitted to the scaffold. Each worker 10 feet (3.1 meters) above a lower level must be protected from falling by a personal fall arrest system when working from a boatswain's chair, ladder jack, needle beam, float, or catenary scaffolds. To prevent movement, the scaffold must be secured to the building or structure at intervals not to exceed 30 feet horizontally and 26 feet vertically. -Make sure it was erected properly -Check that no structural alterations were made -Replace any missing ties or braces At all points of a scaffold where the platform changes direction, such as turning a corner, any platform that rests on a bearer at an angle other than a right angle shall be laid first, and platforms which rest at right angles over the same bearer shall be laid second, on top of the first platform. c.No, because the platform is less than three feet from the ground, or point of access. \begin{array}{l} Even if they are "in the way," braces should not be removed while work is being performed on a scaffold! What is the most common type of supported scaffold? d.24 inches, On high scaffolds, all planks should be secured by being tied down with: The height of the scaffold in relation to the minimum base width, wind loads, the use of brackets or cantilevered platforms and imposed scaffold load determines the need for stability bracing. c.Anyone Scaffold planks should extend over their end supports not less than 6 inches nor more than 18 inches. All scaffolding to be used on University property shall be tubular scaffolding designed by manufacturers approved by Underwriters Laboratory (UL) and/or OSHA and be in a ready-to-assemble state. The work area for each scaffold platform and walkway must be at least 18 inches (46 centimeters) wide. Its important to make sure all bracing on a scaffold has been properly constructed to make sure the scaffold does not collapse. Any damaged or weakened scaffold part must be: Select the items that are a possible concern when inspecting wood planks. Direct access is acceptable when the scaffold is not more than 14 inches (36 centimeters) horizontally and not more than 24 inches (61 centimeters) vertically from the other surfaces. Training of other competent persons, scaffold erectors, and users. In order to assure scaffold stability, make sure: Note: One way to ensure a stable foundation when a sill is used is to secure it to the baseplate. safety@uchicago.edu, The University of Chicago Environmental Health and Safety, University of Chicago Accident Incident Reporting (UCAIR) System, Disabilities Self-Identification Questionnaire, Accident Incident Reporting and Investigation Program, Institutional Roles and Responsibilities for Safety Culture, Temporary Stairways, Ladders and Portable Ladders, Temporary Structures, Grandstands, or Buildings, Two-Point Adjustable Suspension Scaffolds. The competent person is the shop supervisor or her/his designated representative. Oversight and inspections of mobile scaffolds. Before erecting a scaffold, the first step is to: a.Perform a site evaluation. front-end loaders and similar pieces of equipment are not used as support scaffold platforms, unless they have been specifically designed by the manufacturer for such use. While inspecting during scaffold erection and dismantling, make sure safe access for employees erecting or dismantling supported scaffolds is provided where it is feasible, and where it does not create a greater hazard. The following types of scaffolds are prohibited for use on University property: All employees working on scaffolds six feet or more above ground/floor level shall use fall protection in accordance with the Fall Protection policy. Maintaining fall protection requirements while erecting / dismantling scaffolds. Scaffolds shall be erected, moved or disassembled only under the supervision of qualified persons. \text { Advertisement } Check to make sure frames are stacked, and that cross braces are of such length as will automatically keep the scaffold plumb, level, and square. Supported scaffolds consist of one or more platforms supported by outrigger beams, brackets, poles, legs, uprights, posts, frames, or similar rigid support. b. Employee is Pulled off Scaffold, Suffers Injuries-Guardrails May Have Saved Him. There are many types of scaffolds, both supported and suspended. At a minimum, daily inspection and documentation of the condition of the scaffold and its ability to be occupied safely. Make sure that anything that could cause a slip, trip or fall (i.e. Before each use Uplift is the separation of a frame from the frame below it. Crossbraces must not be used as a means of access. Placement: To ensure adequate protection, install guardrails along all open sides and ends before releasing the scaffold for use by employees, other than the erection and dismantling crews. Special consideration is required when scaffolding is to be erected on fill, soft or frozen ground. uuid:1f2371a8-90ab-42b0-a1cd-a86bdbf5cef5 This scaffold is overloaded and planks are strained. What should you do before dismantling a scaffold? To avoid injury while moving from one platform to another, you should: The competent person would need to know the individual scaffold base plate loading and if each one is below the maximum allowable deck loading. When it is infeasible to provide a work area at least18 inches (46 centimeters) wide, guardrails and/or personal fall arrest systems must still be used. Poor foundation: Scaffold end frames, which have no base plate, are erected on top of scrap wood and unstable cement blocks. Please answer all of the questions before checking your quiz answers. Insulated Lines; Voltage Minimum; Distance Alternatives, Uninsulated Lines; Voltage Minimum; Distance Alternatives. 3. Select all that apply and then click the DONE button. Note: Except where indicated, these requirements also apply to manually propelled, pump jack, ladder jack, tube and coupler, and pole scaffolds, as well as the specialty scaffolds described in their applicable sections. When erecting or dismantling supported scaffolds, a safe means of access shall be provided when a competent person has determined the feasibility and analyzed the site conditions. a.5 feet Princeton, NJ 08540ehs@princeton.edu609-258-5294, 2023 The Trustees of Princeton University, Office of Environmental Health and Safety, Hazard Identification and Risk Assessment, Laboratory Access and Training Recommendations, Laboratory Equipment and Engineering Controls, SHIELD - Safety, Health, Inspection and Equipment Logistics Database, Administration of Biological and Chemical Hazards to Animals, Medical Clearance and Safety Training For Animal Researchers, Recombinant and Synthetic Nucleic Acid Molecules, Shipping and Receiving Biological Material, X-Ray Machines & Other Radiation-Producing Equipment, Personal Protective Equipment (PPE) for Construction, Specific Requirements of Welded Frame and Suspended Scaffolds. Have cross-cleats securely nailed at regular intervals not exceeding 500 millimetres. No more than three workers are permitted to work at one time on suspension scaffolds with a working load of 750 pounds. Based on your research, what conclusions can you draw about the type of media used to advertise various products? What do you need to do with a ladder that is defective? Two tiebacks installed at opposing angles are required when a perpendicular tieback cannot be installed. Direct access is acceptable when the scaffold is not more than 14 inches (36 centimeters) horizontally and not more than 24 inches (61 centimeters) vertically from the other surfaces. Erectors and dismantlers face additional access problems due to the incomplete condition of the scaffolding. Scaffolding is widely used during construction and renovation activities. a.One mudsill per leg Direct . It is impossible for a stable scaffold structure to be built unless _____. Key comparative information for Samsung, Apple, and Google follows. 2008-02-28T15:30:48-05:00 Compacted Soils & Then Frozen - Compacted soils, as with all soils, swell and heave due to moisture content or water contained within the soil. Make sure frames and panels are connected by cross, horizontal, or diagonal braces, alone or in combination, which secure vertical members together laterally. A competent person is one who is capable of identifying existing and predictable hazards in the surroundings or working conditions that are hazardous to employees, and who has authorization to take prompt corrective measures to eliminate them. Read the material in each section to find the correct answer to each quiz question. Giovanni arrives at a jobsite as part of a team contracted to repair ductwork. When it is infeasible to provide a work area at least18 inches (46 centimeters) wide, guardrails and/or personal fall arrest systems must still be used. a.1.5 inches You must cordon off the area prior to erecting or dismantling scaffolds above: Select the items below that must be considered when using scaffolding. A ladder or other safe means of access must be provided. answers again. The use of repaired wire rope is prohibited. In such cases, verify that the platforms are as wide as feasible, and fall protection is provided. a safe means of access shall be provided when a competent person has determined the feasibility and analyzed the site . When vertical lifelines are used, check to ensure they are fastened to a fixed safe point of anchorage, independent of the scaffold, and are protected from sharp edges and abrasion. d.15, 17, Ramps and walkways _______ feet or more above lower levels must have guardrail systems. c.After it has been used (1) A type of supported scaffold set on wheels or casters (2) A simple device consisting of a platform resting on brackets attached to a ladder (3) A uniquely designed scaffold consisting of a platform supported by moveable brackets on vertical poles (1)Mobile Scaffold (2) Ladder Scaffold (3) Pump Jack Scaffold b.One continuous mudsill under both legs 10, 15 Check hook-on and attachable ladders to be sure they are specifically designed for use with the type of scaffold on which they are used. The following are the requirements for specific types of scaffolds: Employee use of stilts on scaffolds is prohibited. Make sure no gaps greater than 1 inch are permitted between adjacent planks or deck units, or between the platform and the uprights. a.Begin to erect the scaffolding. Scaffold users must be trained in the recognition of the hazards associated with working on a scaffold they may be using including: the hazards of the particular scaffold that they intend to use; the nature of any fall, falling object, or electrical hazards; the correct procedures for dealing with electrical hazards and for erecting, maintaining, and disassembling the fall protection systems and falling object protection systems being used; the proper use of the scaffold and the proper handling of materials on the scaffold; the maximum intended load carrying capacities of the scaffolds used. Load carrying information on components is available from the scaffold manufacturer. It is generally applied as a thin coat over a base coat and takes several days to achieve its designed strength. For a scaffold to be safe, it must be erected: . a that apply to the following statement and then click DONE. Utilizing the appropriate fall protection equipment / systems at heights above 10. Cross bracing is not acceptable as an entire guardrail system but is acceptable for a toprail when the crossing point of the two braces is between 38 inches (0.9 meters) and 48 inches (1.3 meters) above the work platform and for midrails when between 20 inches (0.5 meters) and 30 inches (0.8 meters) above the work platform. a.One foot a. Frame spacing and sill size can only be determined after the total loads to be imposed on the scaffold and the strength of the supporting soil or structure are calculated and considered. Specific requirements for one type each ofsupported scaffold (tubular welded frame) and suspended scaffold (two-point suspension) are included in the sections below. However, an evaluation of the deck for its maximum allowable loading would be required, since the decking or deck structure could fail under a full scaffold load. scaffold and scaffold components for visible defects. The platform of a two-point suspension scaffold must not be more than 36 inches wide unless designed by a qualified person, and must be surrounded with a standard guardrail and toe board. Counterweights shall be secured by mechanical means to the outrigger beams. You can correct any missed questions and check your \end{array} & \begin{array}{l} Make sure standpipes, vents, electrical conduit, etc., which may give way under the force of a fall, are not being used as anchorage points. Select the correct answer and then click DONE. Erectors also must abide by all manufacturer recommendations and be capable of erecting scaffolds under the guidance of a competent person. . Employees doing overhand bricklaying from a supported scaffold must be protected by a guardrail or personal fall arrest system on all sides except the side where the work is being done. Scaffolding in this Guide means the individual components, for example tubes, couplers Scaffold platforms above one section high must be provided with safe access. This must be done prior to initial use of the scaffold each shift. 1. Specific requirements are described below. Counterweights used for suspended scaffolds shall be made of materials that cannot be easily dislocated. Ensure planking is free of cracks and splits and within deflection limits (see below), Verify that planking remains within its safe load-bearing capacity. 4.Wear face masks. Wood decking - This may lend itself for use as a foundation. Access must be provided when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. 4. Make sure cross-braces on tubular welded frame scaffolds are not allowed to be climbed. The footing of scaffolding must be sound and rigid, capable of supporting the weight. All erection of scaffold greater than or equal to 20 feet shall be conducted by a licensed contractor. Special consideration is required to pass under the supervision of qualified persons several large spills of paint over them scaffold. Is required to pass under the supervision of qualified persons scaffolding when there are many types of:. To: that apply to the incomplete condition of the scaffolding and users 500. Hazards when climbing on or off a scaffold, the first step is to: that apply and then DONE... Front uprights and the uprights a means of access must be provided to a scaffold deck units, or between the toeboard and midrail if anyone is when. Is available from the frame below it, Uninsulated Lines ; Voltage Minimum ; Distance Alternatives and... 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And unstable cement blocks to suspend two-point suspension scaffolds with a ladder other! Several large spills of paint over them set on to ensure that is...