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. Requirements specific to the other types are described in the next module. Suspended scaffold - like the supported scaffold, this type also usually consists of one or more platforms but is suspended by overhead support and ropes. d.35 feet, The top rail of a guardrail system must be installed how many inches above the platform? \end{array} Ensure scaffold components manufactured by different manufacturers are not allowed to be modified to make them fit together, unless a competent person determines that the resulting scaffold is structurally sound. The footing of scaffolding must be sound and rigid, capable of supporting the weight. What should you do before dismantling a scaffold? Each end of the platform, unless cleated or otherwise restrained by hooks or equivalent means, shall extend over the centerline of its support at least six inches. Is the change in Samsungs cash flow on total assets ratio favorable or unfavorable? Ensure frames and panels are locked together to prevent uplift, where uplift can occur. What are supported scaffold foundations set on to ensure stability? 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. After answering all the questions, click on the "Check Quiz Answers" button to grade your quiz and see your score. 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 EHS staff Competent person, or qualified person). 5.Use taglines if a load could swing and hit the scaffold. d.12 inches, If the platform is over 10 feet, it cannot exceed how many inches over the centerline support? The use of repaired wire rope is prohibited. To protect against falling objects, screens must be installed between the toeboard and midrail if anyone is required to pass under the scaffolding. \end{array} & \begin{array}{l} a.1/2 inch 1.A number nine wire The spaces between platforms cannot exceed one inch. 3. Ensure hook-on or attachable ladders are installed as soon as scaffold erection has progressed to the point that permits safe installation and use. 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. Scaffold planks should extend over their end supports not less than 6 inches nor more than 18 inches. b. Chicago, Illinois 60615, T: 773.702.9999 Make sure standpipes, vents, electrical conduit, etc., which may give way under the force of a fall, are not being used as anchorage points. A ladder or other safe means of access must be provided. It is impossible for a stable structure to be built upon a foundation that does not start out square and level. 13. Erecting scaffolds in accordance with local, state, and federal. a.2 to 1 c.10 feet The team has been unable to work on the project due to heavy rain over the last two days. Scaffolds are never as safe as the foundations they are built on. d. Repair any defective scaffolding components. A single tieback must be installed perpendicular to the face of the building or structure. Manila or synthetic rope used for top rails must be inspected to ensure that the rope meets the strength requirement. This scaffold is overloaded and planks are strained. No more than two workers are permitted to work at one time on suspension scaffold designed for a working load of 500 pounds. . Before each use The competent person is the shop supervisor or her/his designated representative. 3.Avoid kicking or knocking items off the scaffold. c.One mudsill per leg extending 6 inches beyond centerline of the pole O>wk`2^Ln?5NVqo Q|:i=p*/ FibrPP am0kk&LHQ7H>An2>8BMg,8i,k8Gx:`(U8B+@2If%) G:t'%$]VMc\RIq N4okHR-YK{_G_,P_1dmhzRsT,kw%SRmfV7_pDf*T7,c \79bj!1}dpB~9V&co7Sj. 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. has not been allowed to accumulate on the platform. 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. Specific requirements are described below. Select the correct answer and then click DONE. 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. 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. d.15, 17, Ramps and walkways _______ feet or more above lower levels must have guardrail systems. 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. Barbara and her team erected scaffolding outside of a building earlier this week. 9. Make sure frames and panels are connected by cross, horizontal, or diagonal braces, alone or in combination, which secure vertical members together laterally. (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 4.Chemical burns Cold asphalt paving (winter) - Asphalt has minimal compressive strength, even when cold, and especially when applied. Ensure planking is free of cracks and splits and within deflection limits (see below), Verify that planking remains within its safe load-bearing capacity. Select the correct answer and then click DONE. Select the correct answer and then click DONE. Visit the Aerial Work Platforms web page to learn more about the specific requirements for aerial work platform use at Princeton. The team is given a set of scaffolding components to assemble. footings are capable of supporting the loaded scaffold without settling or displacement. All erection of scaffold greater than or equal to 20 feet shall be conducted by a licensed contractor. What should Ted do? The poles, legs, or uprights of scaffolds must be plumb, and securely and rigidly braced to prevent swaying and displacement. Should he use those planks? 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. d.24 inches, On high scaffolds, all planks should be secured by being tied down with: 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. 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. Select the correct answer and then click DONE. Select the correct answer and then click DONE. Key comparative information for Samsung, Apple, and Google follows. Employers must provide access when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. 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. 2012-10-05T11:53:02-04:00 d. No, because the height of the platform is easily accessed from the ground, When used, hook-on and attachable ladders must be positioned so that their bottom rung is not more than how many inches above the scaffold support level? Training of other competent persons, scaffold erectors, and users. The work area for each scaffold platform and walkway must be at least 18 inches (46 centimeters) wide. 6. Who is supposed to determine whether scaffold components manufactured by different manufacturers can be modified to fit together? c.Long sleeve shirts Jayden and his crew are anxious to begin erecting scaffolding at the new job site. 1926.451 (f)(3) Scaffolds and scaffold components must be inspected for visible . 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. 2.Rubber By itself it is not normally a useable foundation material. Therefore, employers are required to provide safe scaffold access. 3.String Giovanni arrives at a jobsite as part of a team contracted to repair ductwork. Personal fall arrest systems can be used on scaffolding when there are no guardrail systems. 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. Scaffold Training Institute or similar vendor). Additionally, there is no material cohesion; during a storm the material can wash away under the scaffold base plates. 8 inches 1.Make sure it was erected properly. What is a joint underwriting association (JUA)? d. 8 feet, Except to remove such material, employees must not work on scaffolds covered in: When employees are plastering and lathing 18 inches or less from the front edge. 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. Stairs must be at least 18 inches wide and have a landing platform at least 18 inches long at each level. c. 3.5 inches The end points at each upright shall be no more than 48 inches. Based on your research, what conclusions can you draw about the type of media used to advertise various products? 2.Always use the proper ladder or stairs. \begin{array}{l} 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. 3.Metal Two tiebacks installed at opposing angles are required when a perpendicular tieback cannot be installed. 2. The scaffold and its components must be capable of supporting four times the rated load. Scaffolding must not be placed on unstable objects, such as bricks or blocks. Do not force members to fit. a.Yes, because any height off the ground, or point of access, requires the use of a ladder or stairway. 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. A ladder or other safe means of access must be provided. to prevent falls. Rolling scaffold must not be used on sloped surfaces. \end{array} Two feet What should you do before dismantling a scaffold? Scaffolding is widely used during construction and renovation activities. 904-01 Select the correct answer and then click DONE. The following sections can be referenced for specific guidelines when using scaffolds at Princeton. d.28 inchesa, When ladders are used on a supported scaffold that is taller than 35 feet, then rest platforms must be available at intervals no greater than: The team cannot wait any longer for the weather to clear. All equipment shall be inspected to ensure that it is in good condition and is serviceable. 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. The number one scaffold hazard is worker falls. Guardrail systems or guardrails are barriers erected along an unprotected or exposed side or edge of a walking-working surface 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. Access must be provided when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. Directing employees who erect, dismantle, move or alter scaffolding; Determining if it is safe for employees to work from a scaffold during storms or high winds, and ensure that a personal fall arrest system is in place; Training employees involved in erecting, disassembling, moving, operating, repairing, maintaining, or inspecting scaffolding to recognize associated work hazards; Inspecting scaffolds and scaffold components for visible defects before each work shift, and after any occurrence which could affect the structural integrity, and to authorize prompt corrective action; Inspecting ropes on suspended scaffolds prior to each work shift and after every occurrence which could affect the structural integrity, and to authorize prompt corrective actions; For suspension scaffolds evaluating direct connections to support the load to be imposed; and. \text { Web, and get directions } 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. In such cases, verify that the platforms are as wide as feasible, and fall protection is provided. Work shall not be permitted during high winds. A mobile ladder stand may also have handrails and is designed for use by one employee at a time. Make sure cross-braces on tubular welded frame scaffolds are not allowed to be climbed. 11. Make sure that anything that could cause a slip, trip or fall (i.e. 2008-02-28T15:30:48-05:00 Utilizing a scaffold on the Princeton University Campus for any reason requires specific involvement with several types of trained individuals. Have cross-cleats securely nailed at regular intervals not exceeding 500 millimetres. You must cordon off the area prior to erecting or dismantling scaffolds above: Select the items below that must be considered when using scaffolding. Persons selected to be competent persons at Princeton should receive professional Scaffold Competent person training either from an internal (Office of Environmental Health and Safety, EHS) or external competent person (i.e. Wood decking - This may lend itself for use as a foundation. 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. Make sure portable, hook-on, and attachable ladders are positioned so as not to tip the scaffold. Make a chart listing each ad and describing it as shown in the example below. Scaffold collapse The proper erection of a scaffold is essential in preventing this particular hazard. ). 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. Crossbraces must not be used as a means of access. Sand, gravel, masonry units, rolls of roofing felt, and other such materials shall not be used as counterweights. 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. Supported scaffolds consist of one or more platforms supported by outrigger beams, brackets, poles, legs, uprights, posts, frames, or similar rigid support. Only authorized scaffold erectors can erect scaffolds on campus. Counterweights used for suspended scaffolds shall be made of materials that cannot be easily dislocated. One means to support students is through the use of language scaffolds, which temporarily support students' language use in the classroom. b.Three times Select the correct answer and then click DONE. This scaffold has no guardrails and is not fully planked. \text { Product Information } \\ c.Re-evaluate the site, as the ground conditions have changed due to weather. Select all that apply and then click DONE. In its simplest form, a scaffold is any temporary elevated or suspended work surface used to support workers and/or materials. c.6 feet The competent person must inspect the area to determine if this is a firm footing (see Answer to Question 3). 6 inches b.3 to 1 Only the base coat gives the asphalt compressive strength.1. 5.Oxygen deficiencies, When should a personal fall arrest system be inspected? 1926.451(e)(1) . 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. Poor foundation: Scaffold end frames, which have no base plate, are erected on top of scrap wood and unstable cement blocks. 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Must have guardrail systems sure portable, hook-on, and attachable ladders to built! Chart listing each ad and describing it as shown in the next module area for each scaffold platform and must... And other such materials shall not be used on scaffolding when there are no guardrail systems uplift... Scaffolding components to assemble inches ( a means of access must be provided to a scaffold centimeters ) wide inches ( 46 centimeters ) wide begin! Arrest system be inspected to ensure stability nailed at regular intervals not exceeding 500 millimetres impossible for a working of! More above lower levels must have guardrail systems the use of a building earlier this week or more above levels! Falling objects, screens must be installed how many inches over the support! Can erect scaffolds on Campus it can not be used as counterweights feet ( 0.6 m above... Platform and walkway must be plumb, and fall protection is provided above the platform occupied! Are locked together to prevent uplift, where uplift can occur scaffolding outside of scaffold... Sure portable, hook-on, and Google follows described in the example below joint! \\ c.Re-evaluate the site, as the foundations they are specifically designed for use by one employee at time! Erecting scaffolds in accordance with local, state, and securely and rigidly braced to prevent swaying displacement.