Guardrails and/or personal fall arrest systems must be used when the scaffold work area is _____. c.10 inches 4.Chemical burns You must cordon off the area prior to erecting or dismantling scaffolds above: Select the items below that must be considered when using scaffolding. Training should beprovided by appropriate personnel as described in the Scaffold Roles and Responsibilites Section. 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. Requirements specific to the other types are described in the next module. 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. Cross braces shall not be used as a means of access. OSHA has standards that apply specifically to the steps that must be taken to assure a stable scaffold base. b. Scaffolds must be plumb, level, and squared. Ensuring all inspection and maintenance practices for scaffolds are conducted by a competent person in accordance with this policy and procedure. Counterweights used for suspended scaffolds shall be made of materials that cannot be easily dislocated. Where platforms are overlapped to create a long platform, the overlap shall occur only over supports, and shall not be less than 12 inches unless the platforms are nailed; A platform greater than 10 feet in length shall not extend over its support more than 18 inches, unless it is designed and installed so that the cantilevered portion of the platform is able to support employees without tipping, or has guardrails which block employee access to the cantilevered end; A platform less than 10 feet in length shall not extend over its support more than 12 inches, unless it is designed and installed so that the cantilevered portion of the platform is able to support employees without tipping, or has guardrails which block employee access to the cantilevered end; Wood surface shall not be covered with opaque finishes, other than the edges for making identification; Platforms may be coated periodically with wood preservatives, fire-retardant finishes, and slip-resistant finishes; however, the coating shall not obscure the top or bottom wood surfaces; and. Employees shall be trained to demonstrate competency in the following areas: 5235 South Harper Court After answering all the questions, click on the "Check Quiz Answers" button to grade your quiz and see your score. d.Once a month, A personal fall arrest system must limit free fall to how many feet or less? Horizontal members are erected in a manner that creates a usable ladder and provides good hand hold and foot space. 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. . Select the correct answer and then click DONE. 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. When the work area is less than 18 inches wide. The end points of the cross bracing must be no more than 48 inches (1.3 meters) apart vertically. Based on your research, what conclusions can you draw about the type of media used to advertise various products? Scaffolding is widely used during construction and renovation activities. The scaffolding will extend twenty feet into the air. Using various forms of media, select three advertisements that target different markets. Employers must provide access when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. Hot asphalt paving (summer) - This type of asphalt (top coat) is soft when placed and then compacted with rollers. d. 14 feet, What must be worn at all times while working from scaffolding? 2. Midrails, screens, mesh, intermediate vertical members, and solid panels must be capable of withstanding, without failure, a force of at least 150 pounds applied in any downward or outward direction at any point along the intermediate member. 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. Direct . Cross braces shall not be used as a means of access. c.Four times \text { Advertisement } d.12 inches, If the platform is over 10 feet, it cannot exceed how many inches over the centerline support? Replace any missing ties or braces. 4.Ice, What is the minimum safe approach distance for you to maintain from overhead power lines to avoid electrical hazards when working on scaffolding? The competent person must inspect the area to determine if this is a firm footing (see Answer to Question 3). 2.Rubber 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. Scaffolding is widely used during construction and renovation activities. 2.Use bricks to bring the scaffolding level. He fell 16 feet to the ground, sustaining facial fractures and other injuries. Scaffold Platform Construction What are scaffold platform construction requirements? d. Four feet. (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 Select all that apply and then click the DONE button. d.Add additional poles to support the scaffolding. In order to be safe, which two options can Laura's team choose from to continue work? A ladder or other safe means of access must be provided. Special consideration is required when scaffolding is to be erected on fill, soft or frozen ground. 7. tools, scrap material, chemicals, snow, ice, etc.) 2. TypeofAdvertisementProductAdvertisedTargetMarketProductInformationFeaturedTelevisionBlackberryStudents-backtoschoolBlackberryPearl;$20discount;pinkorsilver;usetogete-mail,surftheWeb,andgetdirections\begin{array}{llll} The following sections can be referenced for specific guidelines when using scaffolds at Princeton. d. 8 feet, Except to remove such material, employees must not work on scaffolds covered in: Make sure that anything that could cause a slip, trip or fall (i.e. Screw jacks with base plates shall be used to compensate for uneven ground. 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. 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. What is the widest gap permitted between adjacent planks or deck units, or between the platform and the uprights of a scaffold? Any damaged or weakened component of a scaffold must be repaired or replaced immediately. Is the change in Samsungs cash flow on total assets ratio favorable or unfavorable? Contact EHS for assistance and guidance in any of the duties associated with being a Competent Person. c.24 inches This scaffold is overloaded and planks are strained. 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. The spaces between platforms cannot exceed one inch. Make sure cross-braces on tubular welded frame scaffolds are not allowed to be climbed. Inspecting all scaffold components prior to assembly to insure that components used are of similar material and in good repair before becoming a part of the completed scaffold. 8 answers again. 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. A qualified person must design all scaffolding in accordance with OSHA 29 CFR 1926.451 "General Requirements for Scaffolds" and 29 CFR 1926.452 "Additional Requirements Applicable to Specific Types of Scaffolds". Sand, gravel, masonry units, rolls of roofing felt, and other such materials shall not be used as counterweights. a that apply to the following statement and then click DONE. 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. Separation of frames can occur in high winds (uplift), or when workers climb endframes, overload the platform, uuid:F4AC72E838E6DC1181DF85762784E02C Suspended scaffold - like the supported scaffold, this type also usually consists of one or more platforms but is suspended by overhead support and ropes. Included here are general requirements for all scaffolds. c.6 feet The end points at each upright shall be no more than 48 inches. c.40 - 48 inches c.Re-evaluate the site, as the ground conditions have changed due to weather. A means of access must be provided when the scaffold platform is more than how many feet above or below a point of access? The following are the requirements for specific types of scaffolds: Employee use of stilts on scaffolds is prohibited. c.No, because the platform is less than three feet from the ground, or point of access. Employers must ensure that: a.5 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. Environmental Health and Safety is responsible for: Departments affected by this policy are responsible for: Employees affected by this policy are responsible for complying with the practices within the Scaffold Safety policy. Check that direct access to or from another surface is permitted only when the scaffold is not more than 14 inches horizontally and not more than 24 inches vertically from the other surface. application/pdf \end{array} The end points of the cross bracing must be no more than 48 inches (1.3 meters) apart vertically. \end{array} & \begin{array}{l} Scaffold Roles and Responsibilites Section. b.Incompetent person Training employees working on the scaffolds to recognize the associated hazards and understand procedures to control or minimize those hazards; and. 4.Use tow lines to raise or lower tools and equipment. Guardrails shall be constructed as follows: All job sites and work areas shall be inspected prior to the erection of scaffolds to determine the sites ability to support structure, and for location of electric power lines, overhead obstructions, wind conditions, and the need for overhead protection or weather protection coverings. All other components must be capable of supporting at least four (4) times the rated load. 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. c.Anyone scaffold and scaffold components for visible defects. 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. a.2 to 1 What are some safe work practices you can follow to prevent yourself and others from being struck by falling objects while working on scaffolds? Check that scaffolds and scaffold components are capable of supporting, without failure, their own weight and at least 4 times their maximum intended load. This must be done prior to initial use of the scaffold each shift. 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. Crossbraces must not be used as a means of access. c.Three feet Any damaged or weakened scaffold part must be: Select the items that are a possible concern when inspecting wood planks. The roles of these trained individuals as well as apartial list of their associated responsibilites can be found below. Counterweights shall be secured by mechanical means to the outrigger beams. Ensure scaffolds are altered only under the supervision and direction of a competent person. Cross bracing is acceptable in place of a mid-rail when the crossing point is between 20 30 inches above the work platform or as a top rail when the crossing point is between 38 48 inches above the work platform. \text { Market } Access shall be provided when scaffold platforms are more than 24 inches above or below the point of access. Scaffolds are never as safe as the foundations they are built on. Insulated Lines; Voltage Minimum; Distance Alternatives, Uninsulated Lines; Voltage Minimum; Distance Alternatives. All scaffolding shall have toe boards, screens, a guardrail system and/or debris nets as determined by a competent person. Damaged or deteriorated equipment shall not be used. The footing of scaffolding must be sound and rigid, capable of supporting the weight. Included here are general requirements for all scaffolds. Scaffolds shall be erected, moved or disassembled only under the supervision of qualified persons. 1.Use gravel to fill in the uneven spots. The department recognizes that all employees who intend on occupying a scaffold must go through the appropriate scaffold user training (see above) conducted by a qualified person (i.e. All scaffolds more than six feet above the lower level shall protect employees with guardrails on each open side of the scaffold. It is impossible for a stable scaffold structure to be built unless _____. are positioned so that their bottom step is not more than 24 inches above the scaffold supporting level; have rest platforms at maximum vertical intervals of 12 feet; have a minimum step width of 16 inches, except for mobile scaffold stairway-type ladders, which must have a minimum step width of 11 inches; and, have slip-resistant treads on all steps and landings. Access must be provided when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. a.Competent person Visit the Aerial Work Platforms web page to learn more about the specific requirements for aerial work platform use at Princeton. Before each use Make sure the planks are not allowed. Contacting EHS if there is a concern regarding the erection of the scaffold. No more than three workers are permitted to work at one time on suspension scaffolds with a working load of 750 pounds. Therefore, employers are required to provide safe scaffold access. Scaffold planks shall extend over their end support at least six (6) inches but no more than twelve (12) inches. 1926.451(e)(1) . 5.Oxygen deficiencies, When should a personal fall arrest system be inspected? What are the main hazards associated with erecting, dismantling, and working on scaffolds? 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. The team cannot wait any longer for the weather to clear. c.13, 15 unstable objects are not used to support scaffolds or platform units. . Cross braces shall not be used as a means of access. In its simplest form, a scaffold is any temporary elevated or suspended work surface used to support workers and/or materials. Oversight and inspections of mobile scaffolds. Direct access is acceptable when the scaffold is not more than 14 inches (36 cm) horizontally and not more than 24 inches (61 cm) vertically from the other surfaces. Make sure hook-on and attachable ladder rungs: are positioned so that their bottom rung is not more than 24 inches above the scaffold supporting level; have uniform spacing between rungs of a maximum 16 inches; have minimum rung length of 11 inches; and, have rest platforms provided at a maximum of 35-foot vertical intervals. b.18 inches An employee was on a scaffold that was being dismantled when the scaffold collapsed. \text { Advertised } Wood planks used for platforms on scaffolding shall be specifically graded for scaffold use by an approved grading agency. 8. 4.Jump from one platform to another. 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. To avoid injury while moving from one platform to another, you should: All erection of scaffold greater than or equal to 20 feet shall be conducted by a licensed contractor. b.3 to 1 \end{array} & \begin{array}{l} Select the correct answer and then click DONE. The use of shore scaffolds and lean-to-scaffolds is strictly prohibited. All equipment shall be inspected to ensure that it is in good condition and is serviceable. This includes (but is not limited to): mudsills, screw jacks, frames, braces, planks, access ladders, brackets, etc. Then this must be inspected when conditions change, such as sunny conditions, warming temperatures, etc. 904-01 Select the correct answer and then click DONE. c.Inspect the scaffolding for paint. Before erecting a scaffold, the first step is to: that apply to the following statement and then click DONE. 3.Maintain three points of contact while on a ladder. Make sure scaffold components manufactured by different manufacturers are not intermixed, unless they fit together without being forced and the scaffold's structural integrity is maintained. How can the components of this jury-rigged scaffold possess sufficient structural integrity? 2012-10-05T11:53:02-04:00 5. A single tieback must be installed perpendicular to the face of the building or structure. Its important to make sure components are compatible and made of similar metals, or scaffold failure could occur. What is the most common type of supported scaffold? Select the correct answer and then click DONE. The scaffold must be capable of supporting its own weight and at least how many times the maximum intended load applied to it? Ensure each employer working at any level over dangerous equipment while on a scaffold is protected from falling into the equipment. Employers must provide access when the scaffold platforms are more than 2 feet (0.6 meters) above or below a point of access. 10, 15 Compacted Gravel Roads - This type of road surface may have adequate strength but the material does not provide a smooth surface. Its important to make sure all bracing on a scaffold has been properly constructed to make sure the scaffold does not collapse. 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. Select the correct answer and then click DONE. Erecting scaffolds in accordance with local, state, and federal. 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. 2012-10-05T11:53:02-04:00 There were no guardrails at the working level. or strike the scaffold with tools, materials, etc. d.12. Do not use unstable objects such as loose bricks, blocks of wood or concrete to shore up the uneven surface. endstream endobj 15 0 obj <> endobj 17 0 obj <> endobj 22 0 obj <>/Font<>/ProcSet[/PDF/Text/ImageB]/XObject<>>>/Rotate 0/Type/Page>> endobj 1 0 obj <>/Font<>/ProcSet[/PDF/Text]/XObject<>>>/Rotate 0/Type/Page>> endobj 5 0 obj <>/Font<>/ProcSet[/PDF/Text]/XObject<>>>/Rotate 0/Type/Page>> endobj 8 0 obj <>/Font<>/ProcSet[/PDF/Text]/XObject<>>>/Rotate 0/Type/Page>> endobj 11 0 obj <>/Font<>/ProcSet[/PDF/Text]/XObject<>>>/Rotate 0/Type/Page>> endobj 54 0 obj <>stream 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? b.Two feet Base plates or screw jacks shall be in firm contact with both the sills and the legs of the scaffolding. All scaffolds used in construction, renovation, repair (including painting and decorating), and demolition shall be erected, dismantled and maintained in accordance with this policy and procedure. A mobile ladder stand may also have handrails and is designed for use by one employee at a time. A scaffold can be overloaded by removing the braces, which causes the weight on the scaffold to be distributed to fewer structural members. Note: A level should be used during assembly to make sure new structural components remain in line. Planks are stamped for scaffold approved loading and usage on one end. 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. Its critical to check to make sure scaffolds do not exceed their rated capacity. Toe boards, screens, a scaffold can be a means of access must be provided to a scaffold below rolls roofing. 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