A single tieback must be installed perpendicular to the face of the building or structure. The scaffolding platform will be 32 inches from the ground. What should you do before dismantling a scaffold? 1.Wear personal fall arrest systems (PFAS). No more than two workers are permitted to work at one time on suspension scaffold designed for a working load of 500 pounds. The weather has been an issue and has pushed the project back. Portable ladders tied off to the structure; Less than 300 volts; 3 feet; Two times the length of the line insulator, but never less than 10 feet, 300 to 50 kv; 10 feet; Two times the length of the line insulator, but never less than 10 feet, More than 50 kv; 10 feet plus 0.4 inches for each 1 kv over 50 kv; Two times the length of the line insulator, but never less than 10 feet, Less than 50 kv; 10 feet; Two times the length of the line insulator, but never less than 10 feet. has not been allowed to accumulate on the platform. a that apply to the following statement and then click DONE. In such cases, verify that the platforms are as wide as feasible, and fall protection is provided. A mobile ladder stand may also have handrails and is designed for use by one employee at a time. 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. Be sure scaffolding stays level and plumb as erection progresses. 5. The poles, legs, or uprights of scaffolds must be plumb, and securely and rigidly braced to prevent swaying and displacement. 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. c.10 inches a.Begin to erect the scaffolding. To protect against falling objects, screens must be installed between the toeboard and midrail if anyone is required to pass under the scaffolding. The end points of the cross bracing must be no more than 48 inches (1.3 meters) apart vertically. 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. Scaffold is not level because it was erected without base plates on an uneven surface. Erectors and dismantlers face additional access problems due to the incomplete condition of the scaffolding. The roles of these trained individuals as well as apartial list of their associated responsibilites can be found below. The most frequent fall-from-elevation accident is a fall off ladders. Make sure no gaps greater than 1 inch are permitted between adjacent planks or deck units, or between the platform and the uprights. Tiebacks must be secured to a structurally sound anchorage on the building or structure. multiple fractures to the head, left and right foot, and left wrist, and torn ligaments in the knees. 4. Plasterers, decorators and large area scaffolds; Step, platform and trestle ladder scaffolds; and. Scaffold Roles and Responsibilites Section. Do not force members to fit. a.One mudsill per leg scaffold and scaffold components for visible defects. The following sections can be referenced for specific guidelines when using scaffolds at Princeton. EHS staff Competent person, or qualified person). a.Two times 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. 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. All scaffolding shall have toe boards, screens, a guardrail system and/or debris nets as determined by a competent person. 2012-10-05T11:53:02-04:00 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. Maintaining fall protection requirements while erecting / dismantling scaffolds. Materials: Steel or plastic banding must not be used as a toprail or a midrail. Make sure each platform is fully planked or decked between the front uprights and the guardrail supports. What do you need to do with a ladder that is defective? 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. 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. 1926.451 (f)(3) Scaffolds and scaffold components must be inspected for visible . c.One mudsill per leg extending 6 inches beyond centerline of the pole Its important to make sure components are compatible and made of similar metals, or scaffold failure could occur. You will receive a message if you forgot to answer one of the questions. It is impossible for a stable scaffold structure to be built unless _____. Exceptions: Guardrails are not required when: the front end of all platforms are less than 14 inches (36 centimeters) from the face of the work; outrigger scaffolds are 3 inches (8 centimeters) or less from the front edge; or, employees are plastering and lathing 18 inches (46 centimeters) or less from the front edge. Designing platforms on two-point adjustable suspension types that are less than 36 inches wide to prevent instability; Making swaged attachments and spliced eyes on wire suspension ropes; and. Special consideration is required when scaffolding is to be erected on fill, soft or frozen ground. 4.Use tow lines to raise or lower tools and equipment. The following sections can be referenced for specific guidelines when using scaffolds at Princeton. 21 0 obj <><><>]/ON[37 0 R]/Order[]/RBGroups[]>>/OCGs[37 0 R]>>/PageLabels 15 0 R/Pages 17 0 R/Type/Catalog>> endobj 36 0 obj <>/Font<>>>/Fields 41 0 R>> endobj 18 0 obj <>stream Planks are stamped for scaffold approved loading and usage on one end. Note: Except where indicated, the same basic scaffold requirements that appear in this module also apply to manually propelled, pump jack, ladder jack, tube and coupler, and pole scaffolds, as well as the specialty scaffolds described in this course. Select the correct answer and then click DONE. a.Competent person foundations are set on base plates, mud sills, and other adequate firm foundations. Select all that apply and then click DONE. Laura and her team are on a deadline to finish a construction project. Additionally, there is no material cohesion; during a storm the material can wash away under the scaffold base plates. 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. 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. c.Anyone Make sure that anything that could cause a slip, trip or fall (i.e. 2.Electrical Inspections of scaffolds after changes / alterations have been made. Select the correct answer and then click DONE. Wood decking - This may lend itself for use as a foundation. S/N 869-034-00107-6; cost $30 (foreign $37.50). 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. When inspecting the surface conditions where the scaffolding will be erected, ask yourself: All wood planks used on scaffolds should be rated what grade? 904-01 Additionally, scaffold erectors who have not erected a scaffold during the five year period from their previous scaffold erector training, shall need to be either replaced with an employee who is properly trained and will be erecting scaffolding on a more frequent basis or be retrained on the process of erecting scaffolds. Stair treads must be of slip-resistant design. A list of competent persons will be maintained by the department and additional refresher type training will be provided on an as needed basis. Any damaged or weakened component of a scaffold must be repaired or replaced immediately. b.20 feet Tiebacks must not be secured to standpipes, vents, other piping systems, or electrical conduit. This threshold differs from 29 . When the work area is less than 18 inches wide. Verify that, when moving platforms to the next level, the existing platform are left undisturbed until the new end frames have been set in place and braced. Utilizing a scaffold on the Princeton University Campus for any reason requires specific involvement with several types of trained individuals. After answering all the questions, click on the "Check Quiz Answers" button to grade your quiz and see your score. Manila or synthetic rope used for top rails must be inspected to ensure that the rope meets the strength requirement. Ensure scaffold platforms and walkways are at least 18 inches wide, unless they are used in areas that are so narrow that they must be less than 18 inches wide. 1.Snow 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. He fell 16 feet to the ground, sustaining facial fractures and other injuries. Scaffolding in this Guide means the individual components, for example tubes, couplers When erecting and dismantling tubular, welded-frame scaffolds, and end frames are used as climbing devices for access, make sure: Horizontal members are parallel, level, and not more than 22 vertical inches apart. \text { Target } \\ 2.Rubber All employees are prohibited from working on scaffolds covered with snow, ice, or other slippery materials. 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. d. 8 feet, Except to remove such material, employees must not work on scaffolds covered in: b. Independent lifelines should be protected from abrasion and wear. \text { use to get e-mail, surf the } \\ OSHA:Process Safety Management: Participation, Clinical Pharmacology Exam 2 - CHF & Angina, Elliot Aronson, Robin M. Akert, Timothy D. Wilson, Unternehemensfinanzierung in der EU und in de. \text { Type of } \\ \text { Advertisement } Make sure standpipes, vents, electrical conduit, etc., which may give way under the force of a fall, are not being used as anchorage points. Frequency of the training to be determined by EHS and department management, but should not exceed period of 5 years from the previous training. The end points of the cross bracing must be no more than 48 inches (1.3 meters) apart vertically. d.Add additional poles to support the scaffolding. Select the correct answer and then click DONE. d.5 to 1, The space between adjacent planks and the space between the plank and the uprights must be no more than: 2.A plank clip 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. An employee was on a scaffold that was being dismantled when the scaffold collapsed. Using wire to connect bracing is not safe. Before erecting the scaffold, a number of factors must be accounted for. Employers must provide access when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. A ladder or other safe means of access must be provided. Reviewing this policy to ensure compliance with current regulations; Reporting any questionable conditions that are discovered to the responsible department; Ensuring all affected employees are trained in accordance with this policy. Hard hats Note: Except where indicated, these . \text { Advertised } 2. 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. 1926.451(e)(9) & (g) The spaces between platforms cannot exceed one inch. What is the widest gap permitted between adjacent planks or deck units, or between the platform and the uprights of a scaffold? 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. Scaffolds are never as safe as the foundations they are built on. Providing a scaffold to the user that is free from recognizable and preventable hazards (i.e. 1.Store materials away from the edge. Employers must provide access when the scaffold platforms are more than 2 feet (0.6 meters) above or below a point of access. 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. Scaffolding must not be placed on unstable objects, such as bricks or blocks. a.2 feet Giovanni arrives at a jobsite as part of a team contracted to repair ductwork. c.Select an anchor point for Personal Fall Arrest Systems (PFAS). Ensure hook-on or attachable ladders are installed as soon as scaffold erection has progressed to the point that permits safe installation and use. One means to support students is through the use of language scaffolds, which temporarily support students' language use in the classroom. 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. d. Four feet. Ensure each employer working at any level over dangerous equipment while on a scaffold is protected from falling into the equipment. 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. Using various forms of media, select three advertisements that target different markets. This creates a dangerous situation during the freeze/thaw cycle (which can occur in the course of a day) causing the soil to swell or settle and may not result in a level rigid footing. \end{array} & \begin{array}{l} Click on the button to see examples of different types of foundations and related problems. This must be done prior to initial use of the scaffold each shift. b.2 inches 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. What are some safe work practices you can follow to prevent yourself and others from being struck by falling objects while working on scaffolds? c.24 inches Ropes capable of supporting at least six (6) times the rated load must be used to suspend two-point suspension scaffolds. b.One continuous mudsill under both legs 2012-10-05T11:53:02-04:00 Acrobat Distiller 7.0.5 (Windows) 2. 5.Use taglines if a load could swing and hit the scaffold. The team cannot wait any longer for the weather to clear. Stationary scaffolds over 125 feet in height and rolling scaffolds over 60 feet in height shall be designed by a professional engineer. Stairways must: have the stringers with a maximum slope of 60 degrees from the horizontal handrail on the open side of each flight Ramps used to access scaffolds must: Have a slope gradient not exceeding 1 in 3. If it can be demonstrated that a wider space is necessary, check to make sure the gap is as small as possible and does not exceed 9 1/2 inches. a. 11. Scaffolds must be erected, dismantled, or moved only by properly trained workers under the supervision of a competent person. 6. Who is supposed to determine whether scaffold components manufactured by different manufacturers can be modified to fit together? The scaffold distance between an insulated 220-volt line must be at least three feet. 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. The competent person is responsible for determining the safety and feasibility of installing and using safe means of access, based on site conditions and the type of scaffold involved. 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. The use of shore scaffolds and lean-to-scaffolds is strictly prohibited. Visit the Aerial Work Platforms web page to learn more about the specific requirements for aerial work platform use at Princeton. 1.A number nine wire Then this must be inspected when conditions change, such as sunny conditions, warming temperatures, etc. 1.Use gravel to fill in the uneven spots. \begin{array}{l} c.No, because the platform is less than three feet from the ground, or point of access. Access must be provided when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. and must be provided on any scaffold 10 feet or more above a lower level. The means of access must be determined before erection of the scaffold and employees are never allowed to climb on cross braces for either vertical or horizontal movement. b.18 inches 3.Use mudsills to provide a firm foundation. When are workers on scaffolding most vulnerable to fall hazards? \end{array} & \begin{array}{l} The competent person must inspect the area to determine if this is a firm footing (see Answer to Question 3). \hline \text { Television } & \text { Blackberry } & \begin{array}{l} Cross braces shall not be used as a means of access. d.42 - 50 inches, When installed, toeboards should extend a minimum of how many inches over the working platform? All equipment shall be inspected to ensure that it is in good condition and is serviceable. Make sure portable, hook-on, and attachable ladders are positioned so as not to tip the scaffold. 1926.451(e)(1) . Select all that apply and then click DONE. Cross-braces of the proper length must be used to ensure that the scaffold will remain plumb and rigid. Even if they are "in the way," braces should not be removed while work is being performed on a scaffold! 8 Laura's supervisor, a competent person, has determined that the work may continue despite the moderate winds. d. Repair any defective scaffolding components. 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. All employees who perform work on a scaffold shall be trained annually to recognize the hazards associated with the type of scaffold being used and the procedures to control or minimize those hazards. Select the correct answer and then click DONE. In the event of an emergency, please call 123 from any campus phone or 773.702.8181, Please direct coronavirus (COVID-19) questions tocoronavirusinfo@uchicago.edu. Two tiebacks installed at opposing angles are required when a perpendicular tieback cannot be installed. c.Inspect the scaffolding for paint. Because frame scaffolds are the most common type of supported scaffold, this course uses the Fabricated Frame Scaffold to describe requirements that are common to all supported scaffolds. 1.Climb the cross braces. fall protection systems in place, falling object prevention in place, appropriate access / egress to and from the scaffold, appropriate anchorage and stability of the structure, appropriate walking / working surfaces, maintaining appropriate clearances from electrical hazards, etc.). 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 He suffered d.Once a month, A personal fall arrest system must limit free fall to how many feet or less? It is impossible for a stable structure to be built upon a foundation that does not start out square and level. Employers must ensure that: Supported scaffolds consist of one or more platforms supported by outrigger beams, brackets, poles, legs, uprights, posts, frames, or similar rigid support. a. Dismantle the scaffolding. a.18 inches Competent persons to be trained by other competent persons; erectors to be trained by competent persons; users to be trained by competent persons or other qualified individuals. 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. Select the correct answer and then click DONE. a safe means of access shall be provided when a competent person has determined the feasibility and analyzed the site . Sand, gravel, masonry units, rolls of roofing felt, and other such materials shall not be used as counterweights. Scaffolding student language requires that teachers understand their students and the language being used during lessons, to identify and support the targeted language that can be provided during instruction. The platform gaps are too wide. 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. %PDF-1.4 % Specific requirements are described below. answers again. Erectors can solicit materials and components from other employees who may be on the ground, but the ultimate adding / subtracting of components to a scaffold shall be accomplished by an authorized scaffold erector. 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.